Armen
Serious Thumper
Offline
Half-Witted Wrench-Jockey from Jersey
Posts: 1452
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Hi Edgwodri, One of the problems that can develop with our bikes is that the rear pulley can develop some serious wobble. Looks wonky, can make some noise, doesn't help belt wear, and will have serious negative side effects on your dating life. Dave came up with a solution that involved padding out the cush drive, and it worked well for him. Drag Bike Mike took a different approach. Realizing that the rear pulley has a huge diameter, and is supported by a single row ball bearing, he figured out that switching to a double row ball bearing, and modifying the left axle spacer to suit, gives the pulley the mechanical equivalent of a 1/2 bottle of Viagra-keeps everything stiff and straight. To do the mod (well documented somewhere on the forum), all you have to do is remove the left side seal of the pulley carrier, warm up the carrier and remove the bearing, and install a double row/double rubber seal ball bearing (cheap and easy on Ebay). And of course, turn down a shoulder on the left spacer. The machining operation is pretty simple if you have a lathe. If you don't have access to a lathe, I can modify yours for $30, which includes return shipping. Make sense?
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