I need some help about my rear brake. I have a AR2 with Ultegra DI2 and it came with the new Shimano rear direct mount caliper. This new brake worked pretty well but the long "pivot" lever of the unit was in the way of my Stages powermeter. So, after recommendations, I ordered directly from Tektro a T750r rear brake. The caliper came with a small and with a very tight bend "noodle" who look like the one on V-brake.
Installed it and the lever was very hard to depress, we tried to change the original gear housing to Jagwire brake housing and it didn't change a thing.
IMO, it's probably the noodle or the brake itself but this noodle part cannot be change because it's so close to the chainring.
I was thinking of probably try to modify the Shimano caliper by grinding some of the arm but that's a long shot!
I also have this T750R brake, but plan to use on a trek madone frame (stages power as well).. I so wanted to use the Dura Ace direct mount and have also though about the grind option.
I just finish grinding and I passed the cable inside the bolt. Now the clearance is about 3/16" and because the arm is now shorter the lever is a little stiffer but MUCH better than the result I had with the Tektro caliper. I'll post some pics later.
For me, this is a temporary solution and the ideal setup would be the ebrake direct mount caliper but I emailed a couple of times and always received the "we are working on it" answer... No ETA as a answer.
I'm very open to suggestion and I love everything about this bike except the rear brake. I would rather give 2 or 3 watts to gain in flexibility and ease of use.
Anyhow, I'm open to any suggestions.