Originally Posted by
Retro Grouch
I think that it has everything to do with standardization.
Most screws and bolts have a right hand thread. If you were developing a new product you'd like to use current standardized parts wherever you could. A screw on bicycle cog or freewheel, with a right hand thread on the right side of the bike will tighten itself as you ride.
Hi,
Good point. And no good reason to ever change it, as left is worse for most.
Problems with left pedals and left cranksets caused the adoption of reverse
threading which unfortunately they ignored for square taper bottom brackets.
rgds, sreten.