How do I adjust chain/rear wheel alignment?
Is there a tool for doing this?
This one is cheap, simple, and reliable.
Get a length of steel rod or all-thread (steel rod that's threaded) with one end bent to 90 degrees and a zip-tie on the other.
Put the bent end on the center of the swingarm pivot and move the ziptie to the center of the axle. When the distance is the same (you don't need to move the ziptie for either side) you have an aligned wheel and chain.
Is there a tool for doing this? 2
Of course there is a tool. And with this one, you get the added double satisfaction of being able to make it yourself and of it being cheap. This shouldn't really be necessary, but if you can't get the hang of the tape measure method, it's something you can try. This performs the same function as tools you can get from Muzzys and Race Tools.
Materials (all available from your local home improvement store for under $10):
1. Use the tubing cutter to cut your conduit to length. This one is 39 inches, but that's not a hard & fast number.
2. Set the tubing aside and remove the center screw from both ground clamps.
3. Take the 1/4" nuts and screw one onto each of the hangar bolts.
4. Screw the hangar bolt all the way into the ground clamp, then tighten the nut down (this locks the hangar bolt in place)
5. Secure both of the modified ground clamps onto the conduit. Place one at the end of the conduit and tighten with your screwdriver. Tighten the other by hand. It will be adjustable so that it can slide up and down the tubing.
6. If you've opted for the extra fancy version, insert the nylon hole plugs into each end of the conduit.
7. Your tool should look like this:
8. You will now be able to measure from the swing arm pivot (under that shiny chrome cap) to the axle bolt center. To use the tool: Place the fixed hangar bolt onto the center of the rear axle. Use your hand on the adjustable hangar bolt to tighten/loosen the slide as needed (see picture) to the swing arm pivot.
9. When both sides measure the same, your wheel is in alignment.