LOL, it's not "Rocket" science, but it IS still "vehicle" science. and my arse is over the two wheels of the vehicle... actually, it will EVENTUALLY be. I'm in the middle of a rebuild and have the frame on a cart while mocking up the front and rear end. No chain to line up, and i think even with it on there the bushings are within a few mm's of eachother that i wouldn't be able to tell Line-of-Sight. also, don't have rims on the hubs either, so i cannot check alignment at the seat- or chain-stays. i cannot believe no one has encountered this problem??
