So,this is my next build and i need to find out what size ring/cog to use. Can anyone help? Is there a website that can tell me,or can i do some weird math with the chainstay length?



I suppose i should of thought of this before i ground off all the braze ons.

That paint job is hot to trot. Shame it's tore up.

are those vertical drops..might be a problem for a fg or ss?
i guess u could just add a chain tentioner.
not sure the answer to ur queestion though...good luck

or , I cannot decide which. Maybe is best.

This is why people say don't remove the braze ons. Congrats on this one. I would say single speed with chain tensioner and zip ties might be the way to go. or the eno hub

Yeah but it got pretty scratched up at the shop,so now im gonna do flat black with gloss black Bianchi frame decals for a stealthy look.

i think you'd be better off finding another frame for a fixed gear bike. alot less hassle.

https://www.machinehead-software.co.u...engthcalc.html

Good luck. You have to be super accurate when measuring your chainstay lenth, and the recommended chain length should be really really close to spot on. If it recommends you to use 48 gear inches, a usable unrounded result should be something like 47.95 or even closer to 48. I used this calc to fix my vert drop road bike, and just ended up getting really lucky, since my first estimate with the calc was actually wrong. I just tried a different chainring for the hell of it, and it worked out. Also, check Sheldon Brown for some ways to get around vertical drops.

Congratulations on destroying a beautiful old road bike.

Get a White Industries ENO hub and finish off your monstrosity.

Yoshi......I didnt destroy it,rust ate a hole in the frame at a cable stop. I had a coworker cut the spot out and fill the hole. The frame was free anyway. Stop being a ******.

i can see ur butthole.