- Oct 4, 2013
Not at all, it’s all good stuff. In fact, how about a photo of yours ?
Iron no. Iron bad.I put the clone AP caliper on my T150v. Same problem with travel of the lever and the same problem with the pistons. Took the caliper apart looked fine. Rebuilt the new 13mm master no joy. Rebuilt the standard master at least usable, sort of. All using the standard iron caliper but one that was
Winter coming I guess Ill have to retry the iron caliper.
That is correct.But then again, I got to thinking, maybe the seals are designed to pull the pistons back in order to stop brake drag?
The seals need to be oriented correctly.The seal groove in a brake caliper is not square, but has a slight angle on it's periphery. This is what causes the piston to retract slightly.
That's a new one on me. Over the years I have stripped lots of different calipers from AP Lockheed, Girling, Nissin, Tokico, ATE, & Sumitomo to name a few, & they have all had square seals with angled grooves. Just goes to show that there is always something new to learn.On the Nissin ones I have dealt with the O-rings appeared to be angled.
As you know Martyn, Paul (Fields) was my mate.The seal groove in a brake caliper is not square, but has a slight angle on it's periphery. This is what causes the piston to retract slightly. This could be the problem, but as I haven't pulled one apart to measure I don't know for sure.
The disc on my bike is stainless & was from a chap called Paul Field who sadly died last year. His partner still has some available if you are interested.