Originally Posted by mihlbach
Not in every case. I have a BMX hub with a flip flop. The threads on the flop size have a smaller diameter for a freewheel with less than 15T. Its not for a lhd. I have a SSMTB (redline monocog) built up with that hub with a 17T on one side and a 15t on the other...I flip and flop it all the time.
I had an inkling there may be some which were not. Thanks for the info. I never needed to run lhs (plus I did most of my BMXing pre lhd technology) as my natural side to grind is on the left plus I am out of date with the latest developments.