I got a set of ultegra brakes for my B14, when trying to install the rear brake I discovered the threads on the frame are much bigger than the shimano bolts. The original TRP brake has a pair of studs which bolt into the frame and then the brake arms slide over them.
I have access to a machine shop, so I was thinking about making my own adapter to use the ultegra brake, something like the picture below, I will make sure the flange matches the diameter of the brake seating pad and plan on keeping it at about 1/16" thick.
Do you see any potential issues with this solution?
I will see if I can find the dimensions, think I left them inside one the empty brake boxes. Getting it is really easy, just need to measure the thread pitch and diameter of the TRP stud and the Shimano bolt.
When I did mine I took the parts to the machine shop, and they took care of the measuring.
My question is about the pins. So they screw out without issue? Anti clockwise? I noticed there was a pinch part at the base of the pin but they also look so integrated into the frame. I tried mildly unscrewing one but it didn’t budge and I was scared I was going to ruin my frame 😨
I am wanting to replace the TRP brake with a Tririg Omega X. The Omega X comes with a direct mount adaptor and two different size screws. See image below. So I might be ok on the screw side of things.
Looking into how this TRP brake works…talk about over engineering! I didn’t know something as simple as a brake could be made so complicated. Even the frame has had to have a pin hole drilled into it to accommodate these brakes. My goodness.
They are regular right hand thread screws, I was afraid of putting some force behind the pins too when I took them out. What I did is take a breaker bar so I could apply steady force instead of jerking them and once the locking compound gave way they came right out.
It is a good thing the Omegas come with bigger screws, you won’t have to worry about making adapters like I did
They are regular right hand thread screws, I was afraid of putting some force behind the pins too when I took them out. What I did is take a breaker bar so I could apply steady force instead of jerking them and once the locking compound gave way they came right out.
Great. On this advice, I’ll give it a go. Thanks for sharing the info.
I found this post when looking at options for what will fit my B14 since I have had a headache adjusting the stock TRP brakes to handle the differences between my training wheels and my HED jet + wheels. I’ve got my new 6810r brake now and I pulled one of the studs in the frame. I measured the parts and the shimano brake uses a M6x1.0 thread, and the studs in the frame are M8x1.25. The depth of the threaded insert in the frame is ~15mm, and the thread of the bolt that came with my shimano brake is about 7mm long. I’ve asked a buddy that works at a machine stop to make me the adapters. Hopefully I can get this mounted up soon.
For anyone who has done this was it a noticeable improvement with the ultegra rear brake? Is it worth it to upgrade the front brake as well?
How did it workout with the adapters, same issue with my B14, replaced trp brake and it still constantly sticks , had 2 bike shops work on it over the past 2 years, new cables every year and after a few rides, they stick and cause rub.
The upgrade on the rear brakes was definitely worth it. They are super easy to adjust and maintain now, I can switch between a wider set of rims (HED Jets) and the stock wheels with only a few minutes. A buddy of mine saw my results and has done it to his bike as well.
