My neighbor was tossing out this 6KU fixed gear bike. Pretty much mint condition. Does anybody what chainrings size fits these cranks?, I want to switch to smaller tooth chainring .
by BillyBastardly
My neighbor was tossing out this 6KU fixed gear bike. Pretty much mint condition. Does anybody what chainrings size fits these cranks?, I want to switch to smaller tooth chainring .
by BillyBastardly
7 Comments
Wolf tooth has a good [article about it.](https://www.wolftoothcomponents.com/pages/how-to-measure-bolt-circle-diameter-bcd)
Did you try Google?
[looks like 110](https://letmegooglethat.com/?q=what+bcd+cranks+fo+6ku+bikes+have)
by looking at it I can tell it’s 130
For a 5 bolt crank, measure between the center of any 2 adjacent bolt holes and multiply by 1.7.
Since you are eyeballing centers it may be a little off but close enough to the correct size.
Yeah man
https://preview.redd.it/lyzscxhg6icd1.jpeg?width=487&format=pjpg&auto=webp&s=5d6bb5a111f85d5d767f77cc2d709fe06da4ef11
https://www.sheldonbrown.com/measure-bcd.html
Vernier