Pedal – Original Works by David Dziemian
Friday June 5th, 2015 6:00 pm to 9:00 pm
206 E. State Street
Kennett Square, PA 19348
The New Holland Bicycle Race is a 50+ mile open road course starting and ending at the Community Memorial Park in the Borough of New Holland. We also have a 30 mile loop for the intermediate cyclist which has big rolling hills with one good climb and a downhill coast back to the Community Park.
The race is open to anyone 21 years of age or older. The race is held three times a year. The third Saturday of April, the third Saturday of July and the second Saturday of October. Each race is a variation that increases in difficulty as the season goes on. Ride for the time or ride for the challenge. This event will put a bigger smile on your face than any event you will ride this year. FAST DESCENTS AND GOOD CLIMBS.
The first half of the course has big rolling hills and fast descents with one good climb to the top of Welsh Mountain. From Welsh Mtn intermediate cyclists can cut out and coast downhill 5 miles to the start. The second part of the course has stronger climbs and faster descents. Total raw elevation for the course is 4300 to 4600 ft. Using a credit or debit card will legally bind you to a liability waiver regarding your participation. Each race is $45.00 per person for the upcoming event.
Sat. April 18th, Sat. July 18th, Sat. Oct. 10th, 2015 (Each Race Increases In Difficulty As the Season Progresses)
New Holland Bicycle Race LLC
P.O. Box 332
New Holland , PA 17557
Join us for the CF Foundation’s premiere cycling event, the Actavis CF Cycle for Life. Choose from three routes: 20 or 34 mile course perfect for any skill level, or the 65 mile route for more of a challenge. Whatever route you choose, cycle at your own pace. Enjoy an ice cold beverage, compliments of Conshocken Brewery.
Conshohocken Brewing Company
3rd Annual City of Wilmington Ride of Silence
Hosted by White Clay Bicycle Club & Bike Wilmington
Wednesday, May 20th 2015
Cycling Class for Beginning Riders
Interested in taking a beginner course? Haven’t ridden in a while? Check out this exciting class!
Wednesday May 27th, 6:00 – 8:30 PM
Safety Campaign needs your help! – Are you willing to help spread the work? Donars, storage space and lawn sign placement needed!
As daylight shortens, commuters and trail users have to find alternative routes that do not include Delaware State Parks in the fall, winter, and spring. The affordability of new lighting technologies is making it safer to commute or recreate during night time hours. Many recreational opportunities are limited between September and April for those that work an 8 to 5 job.
There is a new petition to Ray Bivens, Director of Delaware State Parks, The Delaware State House, The Delaware State Senate, and Governor Jack Markell, which says:
“The trail-user community would like Delaware State Parks to extend trail hours beyond the dawn-to-dusk policy. This will allow commuters and recreational users legal access to trails during night time hours.”
Will you sign the petition? Click here to add your name:
Presentations & skills training, followed by a group ride, will make you a more confident cyclist. Classroom Instruction includes: bicycle safety & maintenance, clothing selection, traffic law, and much more. Lunch is included.
WHERE: WILMAPCO Building, Newark, DE
WHEN: Saturday, October 18th, 8:00 AM to 5:00 PM
COST: $30.00 for White Clay Bicycle Club Members (WCBC), $50.00 for non-members
INSTRUCTORS: Paul Hess, John & Ceci McCormick
To register contact Paul Hess – firstname.lastname@example.org
Smart Cycling Programs
Garrisons Cyclery enjoys a special discount to the Delaware Gran Fondo.
Just use the discount code GCC and they will save $10 off registration.
Has it been a while since you’ve ridden a bicycle? Have you decided to try it because you just got a new bike or pulled the old one out of the garage? Wait a minute. There are a few things to consider before taking that ride.
If any of these questions have you scratching your head then this is the class for you……
Learn simple tricks to keeping yourself safe out on the road or trail. Discover the advantage of riding with a group. And a host of other tips that will help you enjoy riding a bicycle.
WHEN: May 28th, 6:00 PM – 8:30 PM
WHERE: WILMAPCO Building, Newark
INSTRUCTORS: John & Ceci McCormick
WHAT TO BRING: bicycle, helmet
Register by Friday, May 23rd. Send an email to: email@example.com or call 302-528-1773 for more information.
Hosted by White Clay Bicycle Club & Bike Wilmington
Join cyclists worldwide in a silent slow-paced ride (max. 10 mph) in honor of those who have been injured or killed while cycling on public roadways.
WHY DO WE RIDE?
The ride will be lead by the ghost bike mounted in the bed of a truck. The City of Wilmington’s Police Bike and Motorcycle Patrols will escort us as we ride through the city and surrounding areas.
DATE: Wednesday, May 21, 2014
PLACE: Ed Oliver Golf Club, 800 N Dupont Rd., Wilmington, DE 19807
TIME: Please arrive by 6:30pm Ride will depart in SILENCE at 7:00pm sharp
Meet-up after at the Greenhill Pub located at the Ed Oliver golf course clubhouse for all-you-can-eat pasta dinner – $10 – choose from 3 homemade sauces.
For more information contact: Gail Robillard – 302-593-3492 – firstname.lastname@example.org
In the event of rain this ride will be cancelled
A new amazing line of clothing we are carrying is called “Endura.” Endura Ltd was founded in Edinburgh, Scotland in 1992 by a keen club cyclist (Jim McFarlane) after his return to Scotland from a 14 month stay in Sydney. Whilst living in Australia Jim had been entering the cycle portion of team triathlon events and, at one such event, had his kit stolen causing him to have to browse for a complete set of replacement kit. After a great deal of disappointment as to what was on offer he decided that upon his return to Scotland he would attempt to produce cycle clothing that was focussed on function and longevity without cutting corners on material and construction and this is the enduring ethos that still permeates throughout Endura today.
The company initially worked with quality garment factories in central Scotland to provide cycle clothing however it quickly became apparent that general purpose garment factories lacked the specialist knowledge and equipment to manufacture performance cycle clothing and so Endura began manufacturing all of its own clothing in 1993 and has increased its in-house manufacturing of technical cycle clothing year on year right up to the present time.
Our bike shop proudly carries this amazing product. If you’re a casual rider, an urban rider or in competition, they have a line designed specifically for you. I also suggest dropping by their website and signing up for their newsletter. Their monthly emails are extremely informative and offer great insight on new products, reviews and upcoming events.
The article focuses on proper fitness and something James calls the “false fit.” “False fit” is when someone perceives themselves to be fit when there are glaring holes in one of the 4 Fitness Components.
I recommend reading the full article here
Bike riding is part of being a kid! And our bike shop strives to be part of the community. Over the past few months, Garrison’s Cyclery has been part of several exciting projects including both of the following videos!
Our bike shop has always taken pride in carrying Chris King Precision Components. All of their parts and components are intentionally built and completely serviceable for a lifetime of riding. Why settle for anything less?
If you’re interested in having your bike upgraded to Chris King quality, stop by our bike shop or give us a call and we’ll be more then happy to hook you up.
Take a look below to learn more about Chris King’s exciting new product offerings from a recent E-mail they’ve sent to us.
Chris King is excited to announce our new line of hand built wheels. Premiering at Interbike these exquisite road, cyclocross, and mountain wheels are built with our legendary Chris King hubs and laced with Sapim spokes to intentionally selected rims from a pedigreed list of manufacturers that include Enve, Hed, and Stan’s. Each hand built wheel is finely tuned to the same standards of precision that have been a hallmark of Chris King manufacturing since 1976.
Dealers will be able to choose the hub color of their choice and each pair of precision wheels will be built and delivered to their front door in 14 days or less. Carbon rim wheel sets come standard with ceramic bearings while our aluminum rimmed offerings come equipped with our legendary steel bearings.
We will be taking orders starting the first day of Interbike with our first scheduled deliveries set to hit shop doorsteps within the first two weeks of November. From there we will be rolling out different wheel offerings over the following months with Hed and Stan’s equipped selections available immediately and our Enve equipped wheels set to be delivered in early spring 2014.
Turquoise Special Edition:
We are ecstatic to be offering a handpicked selection of our most popular products in eye-catching turquoise. These components will be released for a short time and in limited quantities so make sure to place your order with your local Chris King representative by November 15th.
Cielo Cycles welcomes new dealers:
This year Cielo Cycles will be attending Interbike Indoor for the first time. We are excited to have our dealers, friends, and Chris King fans experience our precision crafted bicycles. We have recently changed our sales program to allow any Chris King dealer the ability to purchase a Cielo. With a 60-day turn around on all orders we are excited to see more of your riders out on Cielos. Chris King has made sure that our dealers and their employees have access to our components through our employee purchase program and we have developed the same generous pricing for Cielo.
Chris King Tech Demonstrations:
During Interbike we will be offering daily technical demonstrations outlining the serviceability of our legendary Hubs, Headsets, and Bottom Brackets. In the past these demonstrations have proven to be highly interactive and extremely informative. Chris King himself has been known to take part. Demonstrations will be taking place at 11:00am and 2:00pm everyday during the indoor show at booth number #9124. We look forward to seeing you!
Greg Minnaar rides Chris King to another World Championship title:
On his home course of Pietermaritzburg Greg Minnaar came behind to take his second consecutive World Championship. Greg stormed the course on his ceramic equipped Chris King wheels while his carbon V-10 blasted through the long fast sweepers guided by the legendary smoothness of a Chris King headset.
Santa Cruz has put together a recap of the team’s race weekend that is definitely worth watching. See it here, http://vimeo.com/73765526
Garrison’s Cyclery is proud to welcome New Belgium Brewing Company to Delaware!
Our custom shop has been very busy and one of the great opportunities we’ve had come through is for a promotion for New Belgium Brewing. These amazing bikes were customized right-here in our shop. Click the thumbnail to view the images enlarged.
2013 Wilier Cento SR built with a mix of Campagnolo Chorus & Record 11, 39/53 w/ a 12-27 Record cassette, Mavic Cosmic Carbone C40 clincher carbon wheels, FSA Plasma 42cm compact carbon integrated stem/handlebar, Look Keo Blade Carbon Ti pedals, Selle Italia Wilier team saddle, Michelin Pro 4 service course tires 23c and a Cateye stealth 50 computer.
He’s off and riding South West as I write this! What an epic ride/adventure! He made mention of all the kind people who are helping him along the way… which every encounter is 100% by chance.
The YMCA of the Brandywine Valley Benefit Bike Ride is a family-oriented event. The ride benefits the YMCA Financial Assistance Program, which helps send kids to camp and teaches them how to swim. Funds raised during the ride ensure that everyone can benefit from YMCA membership and programs, regardless of their ability to pay the full cost.
About the Rides
Two starting locations, West Chester and Unionville. Visit www.ymcabwvbikeride.com for times and locations. Choose to cycle the full 80-mile course, or choose distances of 40, 25, 15 or participate in the youth ride.
The 15 through 80-mile rides receive full SAG support. Riders who wish to combine loops can extend their day. Roads are well marked and cue sheets will be provided.
All riders must wear a helmet. No headphones are allowed during the ride. Safety first!
Another successful outing for Garrison’s Cyclery. Santa Cruz Bikes could not have been any cooler and their full demo tour put on an excellent and exciting Demo for all of our area friends. We certainly look forward to hosting more bike events like this in and around the Pennsylvania – Delaware area.
Photo by: Scudder Stevens
Photo by: Scudder Stevens
Photo by: Scudder Stevens
Photo by: Scudder Stevens
Photo by: Scudder Stevens
Another amazing local event for all you riders. This event helps support a fantastic foundation that fights childhood cancer, one cup at a time!
If you can’t make the ride but want to help. Please help support Team Declan 2013!
When: Sunday, July 21, 2013 8:30 am – 3:00 pm
Where: Central Bucks – West, 375 West Court Street, Doylestown, PA 18901 view map
Join us for The 2nd Annual Lemon Ride Philadelphia! A cycling event in Doylestown, PA that benefits Alex’s Lemonade Stand Foundation, The Lemon Ride is a fun way for cyclists of all abilities to support the fight against childhood cancer one mile at a time.
New for 2013, The Lemon Ride offers four different course lengths ranging from a 4 mile Family Fun Ride to a 63 mile ride (a metric century) for more experienced cyclists. All routes start and finish at Central Bucks West High School. Read the Guide To The Rides to view descriptions of each route, including start time and suggested time for completion. The bike tour is viewed not as a race, but instead as a ride to encourage participation from all ability levels. Childhood cancer heroes and their families are in attendance to provide inspiration and to signify the vital importance of raising funds and awareness for the disease.
Registration fees: $70/adult, $30/child (12 and under)
Prices increase the day of the event, register now!
Lunch, snacks and a limited edition Lemon Ride Specialized “Purist” water bottle are included in the registration fee. Entertainment at the start and finish line provided by The Party Authority will round out the fun, and SAG support and rest stops will be provided by Bike Works Doylestown, SRAM and Guy’s Bicycles to support cyclists throughout the day. The opportunity to fundraise prior to the event is available and prizes will be awarded to top individual and team fundraisers.
bring: PEDALS, helmet, license, cc, etc.
Sunday – 10:00 am – 3:00 pm
The event will be located at the parking lot directly behing TGI Fridays on Rte. 202 in North Wilmington… 301 Rocky Run Pkwy Wilmington, DE 19803
JUNIOR CYCLING CAMPS
9am – 3pm
Boys and Girls ages 10-16
(8-9 yr olds with permission)
Week 1: 7/29 – 8/2 • Week 2: 8/5 – 9/9
Newark DE Area Parks and Granogue Estate
Wilmington, Delaware’s 1st Annual Ride of Silence was hosted by the White Clay Bicycle Club. The City of Wilmington‘s Police Bike and Motorcycle Patrols escorted us as we rode through the city and surrounding areas. A city truck, with a ghost bike mounted in the bed, lead the group.
Our RoS will departed from Porky Oliver’s Golf Club at 7:00 PM, on May 15th.
The routes were as follows: http://ridewithgps.com/routes/1815979
bring: PEDALS, helmet, license, cc, etc.
Sunday – 10:00 am – 3:00 pm
June 16th the Santa Cruz demo tour will stop here in Wilmington Delaware for all riders interested in ripping any of their line up on the trail!
Check our their website’s demo tour line up/dates. 10am-3pm, bring pedals, helmet and good weather!~
This awesome email came in from another terrific local customer. Lee and I spent quite a while finding him the perfect frame and I’m glad to know its getting a LOT of excellent use. I can’t wait to see more photos from his future rides.
You spend a considerable amount of time helping me get the right size Salsa Vaya frame this past Oct, and I thought I’d send you a quick pic. I’ve been making good use of it, mostly towing a trailer with 3 year old on board around town, but also a local duathlon, touring the back roads of South Jersey (a.k.a. Alabama) some gravel trails, and even an over-night camping trip.
I’m not sure how encyclopedic your memory of one-time customers is, but one of the things we discussed is my wife’s employment with the Coast Guard, and your contact with the CG from a previous career. I mention it because at the end of the month we’re moving to her new duty station in Petersburg, AK. It’s a remote island with something like 13 miles of paved road… which would be sad if I owned some dedicated road-only bicycle, BUT there are 100 miles of old gravel logging roads! I only own one bicycle now, but probably the perfect one for the town we’re moving to.
Thanks again for your time and effort getting me hooked up with the right frame.
Lee D. Coyle
GET YOUR WHEELS IN MOTION
Join us for our 4th Annual Cycle for Life event. Choose from
two routes: a 34 mile course perfect for any skill level, or the 65
mile route for more of a challenge. Whatever route you choose,
cycle at your own pace. This is not a race, so enjoy the ride.
OCTOBER 13, 2013
The Mann Center
2013 Wilier (pronounced “Villier”) Cento SR (pronounced “Chento”) with full Campagnolo Super Record 11, 39/53 paired with a 12-27 cassette, Ace-Co front chain guard, Enve compact bar with matching Enve 100mm stem (on order), Enve SES 3.4 carbon clincher on DT 180 ceramic hubs 20f/24r, Fizik Aliante Carbon saddle, Arundel Mandible matte carbon cages, Conti 23c GP4000s, Cinelli Cork wrap, 15.2lbs w/o pedals! Slick cable internal cable routing unlike most of the internally routed bikes for sale in this TRI-state area.
Another sweet ride from our custom bike shop. 2013 Santa Cruz Blur TR (26″ wheels) in the RXC package.
As one of the first things you should learn as a mechanic when it comes to disc brake maintenance, brake fluid basics are important to know – especially before working on different brake systems. On the surface it all seems pretty simple, you pick the right fluid for your brake, and bleed as necessary. However, there is more to brake fluid than just DOT or Mineral oil.
When it came to the lastest installment of our Tech Speak features, we though it might be a good idea to revisit the life blood of your hydraulic braking system. To gather as much technical information as possible, we went straight to the source and invited Formula, Hayes, Hope Tech, Magura, Shimano, TRP, and SRAM provide their response to our questions. While it may be a refresher course for some, the varying unedited responses we received from some of the biggest brake manufacturers in the industry makes for a good read especially on fluid implications towards road discs, and how your fluid choice can impact your ride (for better or for worse).
UPDATED: SRAM’s official responses have been added to the mix, after the break! Update #2: additional answers from Nick to some questions in the comment section.
Formula (Engineer): We have always used premium DOT4 fluid. Now we are using DOT4 SHELL DONAX ULTRA for all our Formula brakes. DOT4 has a higher boiling point than mineral oil and increases vapor lock resistance by being less hygroscopic than DOT5.1 and others
Hayes (Tim Abhold, Director of Engineering): We use glycol based brake fluid, commonly called “DOT Fluid”. Our systems are compatible with DOT 3, DOT 4, and DOT 5.1 fluids, but the systems are factory bled with DOT 4 fluid, which we also sell in service.
Hope Tech (Woody Hole, Progress Manager): We are currently use DOT 5.1 brake fluid in all of our brakes. This is the brake fluid with the highest dry boiling point (260°C).
Magura (Stefan Pahl, Engineer and Project Manager): Magura uses mineral oil for bicycle brakes since introduction of the very first hydraulic rim brakes in 1987. Mineral oil does not absorb water, is easier to use and does not damage paint or skin. The lower boiling point of mineral oil compared to DOT fluid is compensated over time, as DOT absorbs water, even through seals and bladders, leading to a lower boiling point, see also here. That’s why DOT has to be changed regularly. Mineral oil can stay forever in the brake without regular changes.
Shimano (Nick Murdick, Lead Multi Service Technician) : We use mineral oil for several reasons. The main discussion you usually hear between DOT fluid and mineral oil is that DOT fluid absorbs moisture and mineral oil doesn’t, it’s hydrolytically stable. As DOT fluid absorbs moisture from the air, the boiling point drops. Mineral oil doesn’t absorb moisture from the air so the boiling point never drops. Another thing you hear is that DOT fluid is regulated by the federal government so the quality and characteristics are guaranteed. Obviously this is important, which is why Shimano tests every single batch of our brake fluid to confirm that the viscosity and boiling point are perfect. We actually see this as a major advantage of using mineral oil. We don’t have to trust anyone else’s testing standards for the fluid they make. Since every Shimano brake uses Shimano brake fluid, we have complete control over the process and can assure consistent performance. Let’s take a look at those DOT standards though; they have specific targets for fluid that is both dry and wet (defined as having absorbed 3.7% water by volume):
As you can see, our boiling point starts higher than any DOT fluid and never drops.
We also use mineral oil because it won’t harm the finish on the bicycle or your skin. Along those lines, it was important to us to use a fluid with minimal environmental impact if a line is ruptured during a ride.
SRAM/Avid: We use Glycol based fluids, specifically DOT 4 and DOT 5.1 for a number of reasons. DOT fluid has a high boiling point, is manufactured to an agreed upon set of safety standards and is readily available in any auto or motorcycle store. Also, any DOT fluid residue remaining on a brake after service is comparatively easy to clean up with water instead of some potentially harmful solvent.
An important point about the hygroscopic nature of DOT Fluid is that by absorbing the water into the fluid it is preventing pockets of water from forming that remain separate from the fluid in the system. Water is heavier and settles to the lowest point in the system, such as the caliper. This means that while the boiling point of the mineral oil remains high, the boiling point of the system is now that of water, only 100C/212F.
Both mineral oil and DOT Fluid are hazardous to your health and the environment. Both fluids must be handled with appropriate protective equipment and disposed of properly.
TRP/Tektro: We also reached out to TRP, and haven’t received a response.
Formula: ONLY AND ALWAYS DOT4 brake fluid! Different brand can be used of course. Shell is recommended.
Hayes: We recommend only Hayes branded fluid, because all our validation and laboratory testing is performed with our Hayes fluid. Other fluid brands may perform acceptably, but without test data to verify the performance we cannot endorse their use.
Hope: Our customers can use other brake fluids with all our products, however, we generally recommend only DOT4 or DOT5.1 as alternatives. Both fluids are widely used in the car and motorcycle industry so are easily available at most good cycle and car shops. DOT3 can also be used if none of the above are available.
Magura: No, no other fluids can be used, even mineral oils, as they may damage the seals due to different chemical properties, letting the seals shrink or expand.
Shimano: Absolutely not, mineral oil is an unfortunate term to use because it is so vague and generic. The term mineral oil can describe a lot of different compounds. It’s kind of like the term salt, which refers to much more than just table salt. Most of us are probably aware that the mineral oil that you buy at the drug store is not the same as the mineral oil we use in brakes, but that extends to different brands of mineral oil brake fluid as well. We should really call it “proprietary brake fluid” but I guess that doesn’t have the same ring to it. I can tell you with absolute certainty that Magura fluid will destroy Shimano brakes in a very short amount of time. I’ve seen it happen several times. The rubber seals in the system have to be specifically designed to interact with a specific brake fluid. If you use a different fluid, the seals will interact differently. Specifically, when you put Magura fluid in Shimano brake, the lever feels spongy and the pad contact point changes because the square edge seal at the caliper is breaking free from the piston at a different time.
There are third party companies that make mineral oil brake fluid and it says right on the bottle that it is compatible with all mineral brakes. Shimano has never approved a third party brake fluid to be compatible with our brakes and we never will. How is it possible that one fluid can work in both Magura and Shimano brakes if Magura fluid destroys Shimano brakes?
SRAM: We recommend only DOT 4 and DOT 5.1 fluids, but DOT 3 can also be used without affecting the seals or anything else in the system.
Formula: Weekly and in every weather condition. But up till now Shell is the best tested brake fluid.
Hayes: Hayes serves a wide variety of brake markets from bicycles to snowmobiles, motorcycles, heavy equipment, and military applications. We have performed testing on a large number of brake fluids, hydraulic fluids, and synthetic fluids.
Hope: We have carried out extensive with different fluids since making our first hydraulic brakes back in the early ‘90’s. Some of those tests have focused on mineral oil, however, in our experience DOT5.1 is consistently the best performing fluid to use in our brakes.
Magura: Of course we tested different mineral oils, but never DOT fluid, as that would require a new design of seals and seal seats. We keep with mineral oil.
Shimano: One of the advantages of engineering your own fluid is that you can make something that specifically fits the needs of a bicycle. So yes, absolutely, lots of different fluids were tested while developing Shimano Mineral Oil. Viscosity, boiling point, and hydrolytic stability were key factors in engineering our fluid.
SRAM: We have tested a number of different fluids, including silicone based and mineral oil based products. To date, nothing has met the performance benchmarks of our currently product.
Formula:Sure, but not only for road disc. Heat dissipation is one of the main targets in the brake industry. You have to consider that when you brake, the torque you apply on the wheel will be transformed into heat. In addition, the job of the fluid is not the heat dissipation, but only to resist the high temperature generated during the braking action. Heat dissipation is one of the greatest areas of testing you have to perform during the design of a new brake. With higher brake performance you will have higher temperatures that need to be dissipated.
Hayes: Definitely. In fact, the heat generated in road discs should also drive investigations into performance optimized mechanical systems, to avoid the fluid boil failure mode entirely.
Hope: We have always used the brake fluid with the highest dry boiling point in our V-Twin CX/Road disc brake unit. Also heat management due to the size of road discs is more important regardless of the type of brake fluid used.
Magura: The potentially higher heat build up on road disc brakes has to be compensated on the “mechanical” side, i.e. bigger rotors, bigger surfaces for heat dissipation. The same as on road to dirt moto bikes (road bikes generally use huge double rotors and big calipers, dirt use single rotor and smaller calipers).
Shimano: I don’t really think so, because you have to think about all of the things that happen as a brake starts to overheat. It’s not just boiling fluid. The first thing that changes with pad temperature is the coefficient of friction – this is an important thing to understand. As a brake pad heats up from room temperature, the coefficient of friction goes up as well and the brakes start to work better. If your pads are designed right, the sweet spot for their coefficient of friction will match up with the normal operating temperatures of the brake. At some point though, as the temperature continues to rise, the coefficient of friction will drop off suddenly. The lever still feels good and isn’t coming to the bar, it just feels like the pad has no grip on the rotor. This is what we call “fade.” It’s a little confusing because most people use the term fade to talk about the lever pulling to the bar but that’s not exactly right.
As the brake continues to heat up, glazing can happen. This refers to the brake pad material breaking down and liquefying. This can be one of the causes of fade. When the pads cool down, the material will recrystallize on the surface of the rotors and pads, greatly reducing the coefficient of friction until the glaze is worn away. Of course, if the coefficient of friction is reduced by glazing, the brakes won’t work as good. If the brakes don’t work as good, you use them more. If you use them more, they are more likely to overheat. If they overheat, they can glaze again. It’s a vicious cycle.
Finally we can start talking about fluid turning to gas. We know that a hydraulic system works because the fluid is relatively incompressible and the pressure you put into the lever comes out at the caliper with almost no energy lost. Gasses are compressible, so if there is a lot of air in the system, or if the fluid turns to gas, the pressure you put into the lever does nothing more than compress the bubbles and the caliper pistons don’t move. To take that concept a little further, when an air bubble is squeezed, it gets smaller and the pressure goes up. If the pressure in the bubble reaches the pressure in the surrounding system the brake will work again. That’s why pumping the lever makes the brakes come back a bit.
It is possible for the fluid to boil before the pads fade or glaze if the boiling point has dropped far enough, but generally the pads start to fail before the fluid. There may be a system out there that is better for road, or there may be some road-optimized solution in the future. The important thing to realize is that you have to think about how the entire system works, not just the fluid.
I think you’re asking these questions because it’s starting to become clear that there might be some problems with just taking a hydraulic disc brake and putting it on a road bike. Even though a road bike is lighter and the terrain is smoother, heat is more of a problem on road bikes than on mountain bikes because of the way you use the brakes. Long downhills with lots of brake dragging build up a lot of heat. Also, because it is easier to stop a lighter road bike people want to use a smaller rotor, which dissipates less heat and makes things even worse. If this leads to fluid heating up and boiling, the brakes stop working. I think this is why you’re asking about different kinds of fluids and how we can change the fluid to handle the higher temperature. But the fluid is only a single piece of the puzzle. If the fluid had a higher boiling point the brakes would just fail because of fade and glazing instead, and it would happen at about the same temperature. You really have to think about the whole system, and when you do the answer becomes clear. Heat management is the solution. We shouldn’t be thinking about how to make the brake handle more heat, we should be thinking about how to keep heat out of the dangerous places, direct it to safe places, and then get rid of as much of it as possible.
People are already starting to think about this a little, they are choosing bigger rotors that can dissipate more heat. Without a complete system that can manage heat, this is about the only option. That’s a compromise though. You should be choosing your rotor size based on the power needs of the bike, not the heat dissipation needs.
SRAM: The choice of fluid is only part of the heat management equation. Proper design of the pads, rotors, pistons, and caliper as a system as well as extensive validation testing is necessary for this new application. Any fluid can be used in a braking system as long as the system is designed for it.
Formula: No, referring to dimensions but absolutely yes when referring to the material of the seals. The rubber compound that we use in our brakes is not compatible with mineral oil (and vice versa). If you bleed a brake that is designed for DOT4 with mineral oil, you will destroy all of the seals in few hours (and vice versa).
Hayes: No. The differences in fluid performance are slight in relation to the system in general and do not drive sizing decisions. Fluid will, however, drive internal components material selection to ensure compatibility.
Hope: No, there is no difference in terms of the size of the parts but there is a difference in the rubber materials used. Using one type of fluid instead of another would cause the seals to swell and eventually brake failure.
Magura: No, there is no difference in size.
Shimano: There are some small differences; our brakes are designed around our brake fluid, so the size of the oil ports is related to the viscosity of the fluid. The balance of those things controls how oil flows around the system, which affects bleeding, lever feel, and the ability to keep air in the reservoir where it is safe. The main differences are in the seals. DOT fluid eats seals so they have to use a specific kind of seal in their system. Even then, seals need to be replaced every few years. If you look around the bike industry, every company that makes DOT brakes offers rebuild kits and every company that makes a mineral oil brake does not.
SRAM: Seal material is critical. Porting size is also a consideration as viscosity changes due to temperature can be greater with oils than with DOT fluid. In our experience piston sizes must also be considered as mineral oil has shown higher compressibility.
Formula: Good question. To give you a short, simple and clear explanation you have to consider two brake fluid variables: 1-viscosity & 2-dry boiling point. These two variables are connected. The target is to have higher boiling point and lower viscosity (lower viscosity means a fluid like water at ambient temperature, higher viscosity means a fluid like honey). With lower viscosity the lever movement and the feeling of the brake is maximized.
Unfortunately (generally) a brake fluid with a higher boiling point has a very high viscosity at low temperature. In the same way a brake fluid with a lower viscosity has a lower boiling point at low temperature. We chose a brake fluid that combines these two characteristics in the best combination to give the customer a great performing brake in all conditions.
Hayes: Different fluids definitely perform differently as temperature changes. Compressibility and viscosity changes with temperature are a key characteristic of the fluid.
Hope: Brake performance issues shouldn’t occur with a well maintained brake system – whatever the weather conditions. In circumstances where the weather does affect performance, brakes using mineral oil brake fluids are more adversely affected by the cold as opposed brakes using DOT fluid. Over extended periods of use, because DOT fluid is hygroscopic, the boiling point will drop and affect brake performance. This is why it is important to replace the brake fluid every year or two depending on the usage.
Magura: Compensating for extreme heat is a matter of dimensioning. The bigger the surface and the mass equal weight of a brake is, the better it can handle heat (assemble a moto brake on a bike and you´ll be fine. It´s just the weight…) Compensating for cold is much more difficult, because it depends on the chemical properties of the fluid. Generally all fluids get thicker, more viscous, at lower temperatures. This leads to a slower response of the brake, the thicker fluid has to be pressed through the same small ports inside the brake. As an extreme just take water: it will freeze and the brake will not work!
Shimano: All bicycle disc brakes will stop working if they get below a certain temperature, but it’s not because of the fluid. If you want proof just take a bottle of brake fluid and put it in the freezer. The failure point is actually with the square edge seal used in bicycle brake calipers. These are designed to pull the pad away from the rotor when you let go of the lever so they don’t rub. The seals need to flex a very specific amount as the piston moves out and then help bring it back in. This seal is also responsible for the system auto-correcting for worn pads. The seal flexes out as the piston moves to a very specific point, after that it breaks free, and the piston slides past the seal. If the seal gets too cold, it loses its flexibility and the piston breaks free too soon. When this happens, the first pull of the lever goes all the way to the bar and then after a few more pulls there is almost zero free stroke in the lever and the pads rub on the rotor because they haven’t retracted. The quick fix is to ride around in circles with the brakes applied to heat up the seals, then just push the pistons back in and try again.
Brakes get much hotter from friction than anything the weather will throw out at them so the only thing I can think off in regards to a hot day is fluid expansion. If a brake sits in very hot direct sunlight the fluid can expand a bit and either lock up the brake or let fluid out of the weeping port. The weeping port is there to handle expanding fluid but it can be a little concerning to see fluid coming out of the lever. If the brake has locked up it’s just because the weeping port works best when the lever is being pulled to move fluid around. When this happens to a Shimano brake with Servo-Wave and Free Stroke Adjustment you can just turn out the free stroke screw to open the master cylinder transfer port up a little and allow fluid to flow up into the reservoir again.
SRAM: The system as a whole is designed and tested for optimum performance in a given temperature range. Extreme heat or cold can affect this performance, but generally the system can be designed to work well in any extreme one would be willing to ride in. We perform extensive validation testing to verify these limits.
Formula: Nothing on the horizon.
Hayes: There are a variety of fluids currently in use in other industries that could be applied to bicycles. Fluid selection is always a function of finding the right balance of performance, stability, cost, and environmental impact for the market/consumer.
Hope: Not that we are aware of at the current time.
Magura: At the moment these are the fluids of choice as they have to be good on high and low temperatures, lube the system, be incompressible, be low on costs,….
Shimano: I think that any new specially designed brake fluid would still be called mineral oil. We’ve already come up with a specially designed bicycle brake fluid ourselves and we haven’t found anything better yet.
SRAM: There are many fluids available for a variety of industrial hydraulic applications which could be used in a brake system. With that in mind, DOT Fluid was specifically designed for brakes and has been in use for years in the automotive and cycle industries.
While there are basically only two categories of brake fluid in use for bicycle disc brakes, due to engineering and manufacturing differences, no two systems are alike. While that drug store mineral oil, or generic DOT fluid may save you a few bucks short term, manufacturers spend a lot of time and effort engineering the brakes as a system and using the wrong fluid could cost you dearly in the long run.
To me, one of the most interesting bits of info happens to be the quoted boiling point of Shimano’s mineral oil. I’ve always heard the argument that mineral oil has a lower boiling point than DOT fluid (reinforced above from Formula, Hope, and Magura), yet there is it. To my knowledge this is the first time I’ve seen the boiling point of Shimano’s mineral oil in print – which if true (their huge resources make it quite possible), makes a pretty strong case for Shimano’s mineral oil – higher boiling point, hydrolytically stable, and safe for your skin, bike parts, and the environment.
Overall, as we suspected, brake fluid should have little overall effect on road disc brake performance. As Nick mentioned, heat management especially for road, is more about mechanical systems than one fluid or the other.
Update #2: There were two excellent questions in the comment section regarding Shimano Free Stroke and Mineral Oil specifically, so I reached out to Nick to see if we could get the answers. Nick is actually in Japan currently continuing to learn about the new product, but he took the time to shoot back some responses below.
Matt: If you buy a bottle of Shimano mineral oil, how long does it remain good for: A. if unopened? B. if opened and then re-sealed (i.e. some poured out for a bleed, lid then replaced)?
Shimano: Mineral oil is fine to keep on the shelf pretty much indefinitely. That’s actually why we are able to sell liter sized bottles instead of just little one time use sized ones. It doesn’t make much of a difference if the bottle has been opened. The same goes for inside the brake, we recommend replacing our fluid as it gets dirty. This is about once a year for the most serious riders who mainly stick to the same bike and ride off road. If the fluid stays clean, like if the bike is in storage, it doesn’t need to be replaced ever.
Justin: I would love to hear Nick Murdick explain what exactly the Free Stroke adjustment does?
Shimano: Free stroke is defined as stroke of the lever before the pads start touching the rotor. The free stroke screw simply changes the starting point of the master cylinder piston. If the screw is all the way in, the master cylinder piston will be all the way in, and the free stroke will be the shortest. Turn the screw out a bit and the master cylinder will start further out. Because it has to travel further before it closes off the reservoir port, the free stroke is longer. In the picture of the clear brake posted above, the free stroke screw is turned all the way in.
I’ll admit that it is confusing because it seems to have the opposite effect when you turn the screw. The stock position is all the way in and that’s where most people like them. If you do nothing but turn the screw out, the pad contact point moves out. So it feels like you’ve made the free stroke shorter. The problem is that turning the free stroke screw also effects your initial reach adjustment. The pad contact point came out, but the starting position came out more. So it’s always at least a three-step process. First set the reach adjustment so that the lever starts where you want it, then adjust the free stroke screw to get the amount of free stroke you want, then turn the reach adjust knob to put the lever back where you wanted it.
I would personally like to see a lever that allows for an even shorter free stroke adjustment but as it is, when the free stroke screw is all the way in, the master cylinder is right up against the reservoir port. So really the only way to give people less free stroke would be to sacrifice clearance between the pad and rotor.
2013 56cm surly disc trucker, 700c wheel, tiagra sti upgrade w/ avid bb7 road calipers paired with linear slick housing, surly nice rack, Civia brownie fenders, fizik aliante vs saddle w/ integrated seat pack, 70mm of stack height, Arundel stainless cages, Shimano PD-M540 pedals. Comfy and rides like a Cadillac!
1st Annual City of Wilmington Ride of Silence
Hosted by White Clay Bicycle Club & Bike Wilmington
Join cyclists worldwide in a silent slow-paced ride (max. 10 mph) in honor of those who have been
injured or killed while cycling on public roadways.
WHY DO WE RIDE?
•To HONOR those who have been injured or killed
•To RAISE AWARENESS that we are here
•To ask that we all SHARE THE ROAD
The ride will be preceded by the ghost bike mounted in a truck.
The City of Wilmington’s Police Bike and Motorcycle Patrols will escort us as we ride through the city
and surrounding areas.
DATE: Wednesday, May 15, 2013
PLACE: Ed Oliver Golf Club, 800 N Dupont Rd., Wilmington, DE 19807
TIME: Please arrive by 6:30pm Ride will depart in SILENCE at 7:00pm sharp
Due to limited parking please carpool if possible
Meet–up after at the Greenhill Pub located at the Ed Oliver golf course clubhouse
for all-you-can-eat pasta dinner – $10 – choose from 3 homemade sauces.
IN THE EVENT OF RAIN THIS RIDE WILL BE CANCELLED
FOR MORE INFORMATION CONTACT: Gail Robillard – 302-593-3492, email@example.com
Friday May 17th 2013 is “Bike to Work Day” 2013.
7:30 a.m. Start time for optional guided group rides
(three routes – see map below)*
8-9:30 a.m. Reception at H.B. DuPont Plaza – Located between
Delaware Avenue, 11th Street @ West Street*
5 p.m. Evening reception at the Monkey Hill Time Trials
*In the event of rain, the reception and guided rides will be canceled.
I really love putting together custom bikes for great people.
This very special bike was created for one of Wilmington Delaware’s finest!
More amazing bike parts to come through our shop.
And the rider wondered why his new bike wasn’t shifting too smoothly…
✸mileage is approximate and may differ due to last minute route changes
Registration forms and event details go to WCBC website:
We have been very fortunate to have our friends over at Suburban Electric hook us up with some really nice window illuminations. We only choose the best! Head over to our gallery page and check out the new photos added to the Shop gallery.
One of our dedicated riders is so impressed with his first set of Enve Composites 45mm clincher rims strung onto Chris King R45 (20F 24R) hubs that he is now on his third set! He upgrades one bike of his a season with a pair of Enve road wheels!
The 45mm and 65mm clincher rims have been the choice for many of our area road and TRI riders!
The new SES “Smart System” are the same USA construction (Utah) only more aero… Please read the ProCycling “Aero Article” regarding improvements in aerodynamics.
Technology and construction: http://www.enve.com/technology.aspx
I also wanted to note that I’ve been rocking and rolling on a pair of their 29er off road MTB wheels on Chris King hubs for almost 5 seasons and have never once needed to remove the tire/rimstrip to true/round the wheel!!! I’ve beaten the snot outta these wheels too. I’ve got 110lb to 280lb riders on various Enve wheels with success season after season.
The following article is a MUST read for all. I strongly recommend reading it and better understanding how far along cycling truly has come! SO – please read the ProCycling “Aero Article“ regarding improvements in aerodynamics.
The 1st picture from the left is the new 142mm x 12mm rear through axle vs the old 135mm x 5mm (going though a 10mm axle) traditional quick release (which was invented my Mr. Campagnolo in 1927)
To the right in picture one is the new 100mm x 15mm “QR15″ vs the older 100mm x 5mm (going though a 9mm axle)
The improvements are increased stiffness paired with lighter weight. It’s such a noticeable improvement with steering response and over all control of the bike while at higher speeds and or technical terrain. This really helps tighten up the frame/fork junction where the wheel/hub is held which is felt right up though the bike!
On October 27th, we were one of 30 outstanding volunteers to bring in 300 bikes for the Unionville / Kennett Square Pennsylvania Food Bank Bicycle Drive. We are so proud to be part of the event! Our Pennsylvania and Delaware volunteers / friends are the best!
Important notice regarding a recall of Wilier Triestina forks:
Wilier Triestina has been committed to creating bikes at the very highest level for decades. We are convinced that the numbers are proving us right. There are many investments made to ensure the best quality for those who demand the most, and it is with this in mind that in recent years we have continuously implemented and improved the existing test protocols and testing of our products. There are however no tests which guarantee the total exclusion of error. Sometimes, unfortunately, even the tightest controls cannot avoid a certain percentage of defects.
It is with deep sorrow that we inform you that some of the forks for the Izoard XP model shipped from Wilier’s factory between October 1, 2011 and October 19, 2012 are potentially defective.
Wilier Triestina is therefore announcing a voluntary precautionary recall to verify and ensure the safety of your Izoard XP bicycles. Therefore we ask you to discontinue use of your Izoard XP until a check is completed. We apologize in advance for any inconvenience this recall may cause.
All Izoard XP bicycles that shipped from the Wilier Triestina factory October 22, 2012 and afterward are guaranteed and safe in every respect.
Here are the details for verification:
PRODUCT NAME: IZOARD XP FORK
RISK: The use of Izoard XP set up with the fork in question could result in a failure. In certain circumstances, the occurrence of such failure could cause the rider to fall, with potentially serious consequences.
DESCRIPTION OF THE DEFECT: Some of the Izoard XP forks in question were built outside of our specifications and have a thinner aluminum steerer tube than the standard.
INSTRUCTIONS TO VERIFY: If the bike was purchased after October 1, 2011, please discontinue use of the bike immediately. You must verify the soundness of the fork by checking its serial number. To do this, please visit your Wilier retailer, who will disassemble the fork and check the serial number for you.
The serial numbers are composed of two letters and four digits and are imprinted on the front of the sleeve of the fork.
I’d like to thank everyone for their excellent participation at the Delaware Trail Spinners: Jamboree at Fair Hill!
The Trail Spinners recently signed a contract with IMBA to develop a planning document for the “Paper Mill Bike Park”. IMBA will be in town October 24 and 25 looking at various sites with focus on Paper Mill Park.
I had to share this photo. I am starting a journal called thoughts from the saddle…one day a book? Anyway…………….love, love, love, this bike!
We are facing the crown race area of this new 2013 FOX Kashima CTD 29er fork before we install the inset Chris King 1.5 base race. Most every forks’ crown race and frames’ headtube need to be “faced” or “planed” before the final assembly. This pretty much eliminates trouble down the road with components that are designed to last for 10 seasons plus with regular maintenance!
I saw this article and figured I had to share:
Join us for a week of riding like you’ve never experienced. Along with fellow
Moots owners and two Moots employees, we’ll take you on daily, fully guided
and sag supported rides through the gorgeous Tucson landscape.
- Rides range from 40 to 75 miles, ending in one final ride up Mount Lemmon, the 20+ mile, 6,000 foot climax of the week
- Enjoy the luxurious accommodations at The Cycling House estate
- All meals are included and prepared by our health-conscious private chef
- All bike assembly and breakdown is included
TAKE ADVANTAGE OF THIS EXTREMELY-DISCOUNTED RATE
FOR MOOTS OWNERS SPACE IS LIMITED TO 12 SPOTS
FURTHER EVENT DETAILS AND PRICING AT WWW.THECYCLINGHOUSE.COM
Reserve your spot by registering at www.TheCyclingHouse.com or call Jon at Moots, 970.879.1676
Click HERE to download more information
Please take the time and consider this ride – as it is for an amazing cause and a terrific group of people.
At high noon today, Jim Seuffert dipped his back tire into the Pacific Ocean in San Diego, CA and pushed off for a cross-country bicycle journey. Over the next 41 days, Jim will cover over 3,100 miles and arrive in Charleston, SC to dip his front tire into the Atlantic Ocean.
Jim is pedaling with a purpose – to honor a dearly departed friend, Mike Clark, who passed away suddenly in March 2008. Immediately after Mike’s passing, The Mike Clark Legacy Foundation (MCLF) was created to carry on Mike’s unyielding spirit, commitment to community and serving less fortunate kids. Jim’s goal is to raise the remaining $60,000 needed to complete the renovations for the Mike Clark Skills Center located within a Boys & Girls Club in Wilmington, Delaware.
I invite you to join in Jim’s journey by visiting his website, following his blog posts and honoring Mike by making a donation on the following link:
LAGUNA HILLS, CA (BRAIN) — Bicycle Retailer & Industry News has selected the Top 100 and Gold Star retailers for 2012 and has invited this elite group to a special reception in their honor to be held the first evening of Interbike.
The Top 100 and Gold Star retailers were selected through a nomination process that included many of the industry’s top suppliers and distributors. They were asked to submit their selections taking into consideration sales volume, professionalism, operational excellence, business practices, community involvement, advocacy work, innovation/creativity and customer service. In addition, the magazine received more than 75 self-nomination forms submitted by individual retailers.
This year 158 retailers made the cut — 100 Top retailers and 58 Gold Star shops. The Gold Star list is made up of retailers that have been nominated as a Top 100 for several consecutive years in a row.
An invite-only reception, hosted by Bicycle Retailer, the IBD Summit and Interbike, will be held Wednesday, Sept. 19, from 5 to 6:30 p.m. in Sands Rooms 106-107. Bikes Belong is the presenting sponsor. Supporting sponsors, Wahoo Fitness and Sierra Nevada, will be on hand to congratulate the winners.
An in-depth profile of each retailer will be included in a special section in the November issue of the magazine.
A limited quantity of 200 raffle tickets will be sold between now and the 2012 Trail Spinners Jamboree on Saturday September 29th at Fair Hill, where the winner will be announced. Once the winner is chosen he or she will then spec the size bike he or she wants and will receive their complete Mukluk within a few weeks. You do not need to be present at the Jamboree to win, but it would be way more fun if you were!
* This raffle is organized by the Trail Spinners. Proceeds benefit our local trails. *