rear wheel alignment for chain bikes

[DimitriT]

Since replacing my chain and sprockets I've been meaning to take a minute and check my wheel alignment. I'm glad I did cause it was way off using the marks on the adjustment brackets. After I got it aligned it was much quieter and smoother.

Here's a little walkthrough of what I did.

1. start off with a length of U channel: 1/2" x 3/4" and 32" long

Your bike may need a different width or depth depending on how much clearance there is between tire and chain.

2. hold the U channel against the tire leaving enough clearance in the forward end to swivel up along the chain as the wheel turns clockwise

3. hold the U channel between chain and tire. In my case the width was perfect for it to fit snug between chain and tire but you may need a wood clamp or two.

4. look closely along the length of the U channel and notice if it pushes up or away from the chain. This picture shows it from the wrong angle. You really need to get on the floor behind the bike and look along the chain.

5. Now adjust the wheel alignment using the chain slack adjustments so that the U channel is perfectly parallel to the chain.

 

[Guest]

Just remove your hands from the steering wheel and see whether it veers right or left. The GS is balanced to begin with, so if it's veering it's because the rear wheel is crooked

 

[t3rmin]

I use two long lengths of 1x1 wood lengthwise, straddling both tires. Adjust alignment until everything is parallel.

 

[Steve]

I use two long lengths of 1x1 wood lengthwise, straddling both tires. Adjust alignment until everything is parallel.

That is the way I have done it in the past, but I used more substantial wood. 1x1s can bend and warp far too easily.

Also helps to have somebody hold the bike for you so the centerstand is not in the way.


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