I’m building a new bike for the first time & trying to install the brake calipers & have run into a snag. The mounting bolts aren’t long enough to go through the fork in the front or the rear. Can these be changed? If so, where can I get longer ones?
Also, I read that these brakes are specific for front & rear. The only difference I see in the ones I got are the mounting bolt lengths (and I’m not sure if the longer one belongs in the front or back). Any way to tell the difference?
Thanks
strange, what kind of frame (exactly) are you installing these to?
you understand that these brakes used recessed bolts, yes?
and the longer bolt belongs in front.
Any LBS should have a number of different length ones. Kestral forks need a pretty long one as does several aero forks.
thanks for the reply; it’s going on a griffen frame with a reynolds aero fork.
i thought the longer one belonged in front, but it still didn’t fit so i was wondering (actually, the longer one fit on the rear, but i understand i’d have to change out the shoes to use it there?)…
Yes there are several lengths see item # 5 below:
You can also tell the difference between F & R brakes buy pad direction.
Most Aero forks ship with a longer nut.
longer centerbolt or longer recessed nut?
i wouldn’t switch front and rear brakes, as apparently there are specific features to the 7800 front and to the rear calipers, other than just the pads.
what does Griffen say about your dilemma?
Yeah, like the mount bolt. Other that that they are the same. Campy has the single pivot rears…
nope, there are actually differences (stiffness, wt., etc.) in the caliper arms themselves (this is according to shimano) between 7800 front and rears.
The Reynolds forks actually use a proprietary bolt, so it’s unlikely you’ll find one ‘lying around’ your lbs…quite odd, though, since I’ve installed a D/A brake, with spacer, on that exact fork w/o trouble. Sometimes however, the threads have a hard time engaging. Could this be the issue??
It’s not out of the question that the nut just didn’t engage. it was late & i had already torn down & rebuilt both mine & my wife’s bikes yesterday before beginning to put this one together…i got frustrated when it didn’t look like it would fit, and naturally assumed there was no way it would be long enough.
but you’re saying that the d/a brake (& included bolt) would work? or do i need the reynolds proprietary bolt?
i appreciate all of your input & help.
You need the Reynolds brake NUT. The bolt should not extend beyond the crown of the fork, you’ll need an extralong recessed nut to reach it. If the griffen uses a Deda rear end or some others, they may need a special recessed nut as well.
Good Luck,
SD