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Rear Brake Centering

  • Thread starter Thread starter lukehan
  • Start date Start date
I also noted my chain is favoring one side of the rear sprocket over the other, it's not right down the middle. With what I did to my brakes last night, I'm going to have to take most everything back off and double check my work.
 
lukehan said:
Here are a couple more pics, one is again from the rear and the other is from the rear, but kind of underneath the bike.

brake2.jpg

brake3.jpg


Luke
Click to expand...

Wow you folks have me totally messed up. I've been around a while and I don't recall EVER seeing or hearing of a GS850 that was chain drive. So these photos have me wondering what's going on.

Regarding misalignment caused by unequal setting of the chain adjusters. I agree with the post that said that wasn't possible. The bracket alignment is maintained by axle so the adjusters are out.

IMO the possibilities are:

incorrect placement of spacers or washers on the axle - this could also account for the reported chain misalignment (though that actually could be cause by the adjusters)

missing spacers or washers on the axle

a bent axle - rotate the axle with the wheel in place. If the clearance changes / caliper wobbles, then the axle is bent.

worn or bent caliper mounting bracket
 
The photos are from a 79 GS850 shaft drive. I think other posts on the thread are from someone else who has a similar problem on a chain drive model. I have not done it yet, but my next step is to take the rear wheel off and check everything for straightness/correct position. The clearance is fine on the front of the calipers, so I am thinking the mounting bracket is tweaked.

Luke
 
lukehan said:
The photos are from a 79 GS850 shaft drive. I think other posts on the thread are from someone else who has a similar problem on a chain drive model. I have not done it yet, but my next step is to take the rear wheel off and check everything for straightness/correct position. The clearance is fine on the front of the calipers, so I am thinking the mounting bracket is tweaked.

Luke
Click to expand...

Yeah sorry about that, I kinda half hijacked the thread 'cause the 750 and lukehan's 850 appear to be identical on the right side of the bike. We both appear to be having the same problem. I'm starting disassembly once the weather warms up to check my spacers because it's clear in my case I'm off a good 2mm's and my caliper is rubbing against the rotor.
 
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