Originally Posted by pigfat
forward is forward no matter how you slice it. Its just that if you flip a low pinion or high pinion you will drive the gear on the coast side of the gear and not the drive side of the gear. As far as lubrication if your not bangin down the highway in it and generally use it for trail riding it will be fine.
Uh, no. Flipping your axle over will result in your tires turning the wrong direction in any gear. When you are in a forward gear, the rear axle will try to propel you forward and the front axle will try to push you backwards (and vice versa).