Originally Posted by Bill Kapaun

I tried a 165mm COTTERED double crank from a Japanese 10 speed I had laying around to ascertain the correct length. It took maybe 20-30 minutes to install.
I then ordered my 165mm triple once I discovered 165mm was for me.
TEST TEST TEST before you commit.

BTW- I made up a temporary cadence sensor to also help measure results. That's how I know 160mm didn't really give me but 3 RPM more than 165's and simply didn't "feel" good.
https://www.instructables.com/Very-E...-Your-Bike-12/