Originally Posted by badsac
When I'm pedaling over it I feel a very slight vibration on the power stroke of each leg (I guess I don't spin the best) thought the pedals. It's gone when coasting so it must be due to the drive train. Any idea what it could be and if it is a worry?
You have to stop using your super-powers or you'll end up breaking something
But seriously, it's just your chain vibrating under tension as it comes of each tooth on your cluster. You could try degreasing it and your cluster to remove any original grease that has gone a bit sticky, then applying a decent aftermarket lube (eg. TriFlow). That should dampen things down a bit.