|DINOSOUR sent me from General Board.Brake rubbing Q:||128|
Mar 21, 2003 9:41 AM
|cross post from gen board
"rookie question §3(b)(i):turn screws, tune brakes, dropouts?"
The rear brake pad (slightly)rubs since I put the wheel back on. It didn't before.
Before re-adjusting the brake set I wondered if maybe I put the wheel in lopsided somehow? It looks tru when I spin it. But how do I know if those screws that come through the
dropouts are equal in length? Do they have to be? Should I be struggling against the rear der tension so much when I pull the wheel back against the 'dropout screws' if that's what they're called. My guess is my "method" putting the rear on is all wrong. The lbs guy was last to mess with it, so I figure I must have done something wrong.
I sense a eureeka moment real close by, yet fully obscured by my ignorance. Little help? Thanks.
Mar 21, 2003 9:45 AM
|brake rub after wheel install||mja|
Mar 22, 2003 4:39 AM
|Not unusual, which is why I put the bike in workstand, turn it upside-down, and drop the wheels in.|
Mar 22, 2003 8:52 AM
|Put the bike on the ground, release the QR, pull the wheel back, tighten the QR. This will eliminate any side to side errors due to installation, and the wheel should then be centered in the frame at the brake bridge. Look to see that it is. Look to see that it is also centered in the frame at the BB. If it is centered in both places, then your dropout screws are properly adjusted and your brake just got knocked a little off center when you were removing/replacing the wheel. Adjust the brake with your bare hands and then tighten the brake mounting bolt. If you can't move the brake with your bare hands, then loosen the bolt, adjust, and tighten the bolt. If it is off at the BB but not at the brake bridge, then your dropout screws should be adjusted to center the wheel. If it is off at both the brake bridge and the BB, then the wheel is not properly dished - take it to your bike shop. Most likely your brake just got knocked off center.|| |