Originally Posted by
grumpus
A quick and dirty hack is to get a 7/8 inch wooden dowel (or just whittle some random wood 'til it fits) and jam it in the end of the handlebar then you can mount a thumb shifter as a bar end shifter.
This is a fun idea! - I am initially gonna try and use drop bars (because i prefer the aesthetic to flat bars.) - But if that fails, Imma use some flat bars.