Re: Chain tension
The rag joints work well but the rubber can compress against the spokes over time and allow the sprocket to move. Checking the tightness of the sprocket fasteners should be part of your "preflight". If you have access to a torque wrench, all the better. Torque them to 50 to 60 inch pounds AFTER you get the sprocket centered and check them every couple of hundred miles.
I use a pointer attached to the frame to indicate the exact out circumference of the sprocket teeth. Spin the wheel and watch to see where the pointer is in conjunction to the teeth. That will tell you which way the sprocket needs to move. You can slightly loosen the fasteners and tap the sprocket teeth with a plastic hammer or use a block of wood so you don't damage the teeth, and tap the sprocket into position, then retorque the fasteners. You'll also need to watch for a wobble, side to side. Try to keep things as close to perfect as you can get it. The truer that sprocket spins, the better. Roller chains like things aligned and centered.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"
Last edited by 2door; 04-27-2014 at 05:19 PM.