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Discussion Starter · #1 ·
Hello -- I recently bought a 2006 Blast and I'm having a problem (I think) with the disc brakes. When I install the front wheel, I cannot line up the disc such that there is no friction/noise when spinning the wheel. I've tried pretty much every angle and positioning technique I can think of... but at some level I know it shouldn't be *this* difficult. Am I doing something wrong? Is there a trick to this? Sorry I don't know the terminology better!
 

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Nice no rass
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Put the wheel in being certain it is seated all the way into the drop outs and tighten the quick release skewer. Next, take a 5 mm allen key and loosen the two bolts (slightly) that hold the disc caliper to the fork. Squeeze the brake 2-3 times and hold the lever while slowly tightening those two bolts back up evenly. Release the brake and you should now have a centered caliper and no rubbing. As long as the front & back wheel are fully seated in the drop outs when you center the brake caliper, you will never get rubbing when removing/replacing the wheels.
 

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Discussion Starter · #3 ·
Thanks for the tip... I think I'll just take it in have the guys at the bike shop do the adjustment. I don't want to screw it up!
 

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Shortcutting Hikabiker
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Too Rass Goat said:
Put the wheel in being certain it is seated all the way into the drop outs and tighten the quick release skewer. Next, take a 5 mm allen key and loosen the two bolts (slightly) that hold the disc caliper to the fork. Squeeze the brake 2-3 times and hold the lever while slowly tightening those two bolts back up evenly. Release the brake and you should now have a centered caliper and no rubbing. As long as the front & back wheel are fully seated in the drop outs when you center the brake caliper, you will never get rubbing when removing/replacing the wheels.
Its a mecahnical disk, that wont work.

Make sure you have the QR really tight. Sometimes when tightening the QR the fork will flex a decent amount. So if the QR is loose the brake might rub if the brake was set up with the QR really tight.
 

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Nice no rass
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It won't work? Wow, I guess it didn't work on the 24 Konas in my rental fleet with MX-2's...

If he gets the wheel fully seated and adjusts the caliper afterwards, it will and does work. Loosening the caliper bolts allows the caliper to slide a few mm's either way and center around the rotor. He's not centering the pistons like on a hydro, but rather the entire caliper assembly. The key is making sure the wheel is fully seated before making adjustments.
 
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