Compass Centerpull Brake SpecsJan Heine
The new Compass centerpull brakes have been very well received. Numerous builders have asked for the complete specifications for the brakes, since many riders plan to use them on their new bikes. We sold so many of the centerpull braze-ons that we are currently out of stock of these pivots, but another shipment is expected next week.
We recommend that builder have the brakes on hand when they build the bike, so that they can make sure everything fits just right. We have the specifications available online as part of the instructions for the brakes. This also allows riders to check whether the brakes will fit their existing bikes.
The specifications include detailed drawings that allow builders to get the clearances just right for bikes with 650B x 42 mm tires and full fenders. These measurements are the result of a year’s work: measurements were taken, calculations performed, CAD drawings created, prototypes built… We wanted the entire system of fork/tire/fender/brake/rack to be right, once and for all. These specs will be useful for builders who are not using Compass brakes on their current project, since they show the optimized clearances for tires and fenders.
The Compass CP1 rack is specifically designed to go with the Compass brakes. (The rack only works with centerpull brakes.) The rack is based on a René Herse rack that combines elegance, light weight and rigidity.
It is important that the brake pivots are located at the right height, otherwise the rack will sit too high or too low above the fender. The instructions for the brakes include all measurements a builder needs to build a bike with our brakes and our rack.
The rack and brakes also work for other configurations in addition to 650B wheels and 42 mm tires. For other wheel diameters, the dimensions remain the same in relation to the top of the tire – the builders simply adjusts the measurements for the different outer diameter of the wheel.
It’s been a lot of work to get to this point, but when we rode these brakes during pre-production testing (above), we realized that it was totally worth the effort. The absolute braking power of the Compass brake is great, and the modulation is superb. This gave us great confidence descending challenging mountain roads at speed. As always, the goal is to have more fun on our bikes!
Click here to download the complete instructions.
Click here for more information about the centerpull brakes.