Join Date: Mar 2008
Location: The 'Wack, BC, Canada
Bikes: Norco (2), Miyata, Canondale, Soma, Redline
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Originally Posted by operator
Brakeboosters are worthless in the first place...
THIS IS 100% WRONG! ! ! !
How can you say something like this with a straight face?
I recently did some modding to my old Norco Rampage. One of the old school steel frames from back when light weight and quality went hand in hand. But with that lightness came some pretty apparent flexing. The boosters produced TWO instantly felt improvements. First, of course, the lever felt SO much more solid thanks to reducing the frame flex. The second was that the brakes actually stopped with less lever pressure needed for the same stopping power. Likely because the arms don't twist outwards as much so the pads stay flatter to the rim faces.
I always thought brake boosters were the hieght of geekiness until I saw how much the stays were flexing and thought I'd try one. Now my bike is sporting a pair and I'm proud to have them on there. Form follows function and these things really do function.
Sunstealth I had to shim mine slightly to clear my Avid Arch Rivals. You can use the aluminium cup washers from an old worn brake shoe. You'll need to file the hole out a little but it'll work and they come in two convienient thicknesses so you can use the one you need. If by some chance your arm bolt is now only going in about 3 to 5 mm worth of thread into the pins then get some longer bolts. You really do want to have more around 7 to 8mm minimum of thread engagement. With the booster the bolts aren't just holding on the arms anymore. There's now side forces on those bolts thanks to the booster and you want at least a good 7 to 8 mm worth of thread engagement to help support the bolts. If there isn't enough the side forces could make the bolts work loose.
Last edited by BCRider; 01-19-10 at 12:15 AM.