Half decent drive train length calculator

just buy a chain.
if it's too long, cut it.
if its too short, add links.

innit ?

is that me being a Neanderthal ?

It's an approach that works for most people. I run a double fixed hub so I wanted to see what the biggest gearing difference was that I could get on my two sprockets, without having to split the chain.

Fantastic work.

For those with little room for adjustment in their rear drop-outs (track ends) this could be really useful, and save some trial and error.

I for one thankyou for your efforts.

Cheers mate, much appreciated.