cloakedvillain
Well-Known Member
Use a gokart forward and reverse gear box, then put the output into a retrodirect system, whether its chain based or a planetary gearbox. https://en.m.wikipedia.org/wiki/Retro-direct
Very bad idea for a very bad transmission:
- Thread starter cloakedvillain
- Start date
Sidewinder Jerry
Well-Known Member
They mentioned 2 ways of making a retrodirect system.the second way seems more practical since there'd be no crisscrossing chains. The Bikebarry double chain transmission could be considered to do this. It'd require changing the 2 larger sprockets to 2 different size freewheels.
Still there's much easier ways to build shifter bikes
