https://www.leelikesbikes.com/wp-content/uploads/2018/08/leelikesbikeslogoheader.jpg 0 0 leelikesbikes https://www.leelikesbikes.com/wp-content/uploads/2018/08/leelikesbikeslogoheader.jpg leelikesbikes2021-04-07 19:22:472021-04-07 19:22:47Changing chainring size when shortening cranks
Changing chainring size when shortening cranks
Thanks for the RideLogic bike setup consultation. Two rides in with the new bar and I’m definitely adjusting, but it’s a way different feel than it used to be. Really liking it, and a lot of moves feel easier (as long as my legs are up for it). I’ve obviously taken a deep dive here, so why not dive all the way.
My next thing I’m looking at is crank length. You talk about switching from 30 to 28 teeth for a switch from 175 to 165. I’m considering going to 155. I currently have a 32 tooth and 170, I believe. How many teeth would I need for a 155mm crank?
175mm / 30t = 5.83kfu*
170mm / 5.83kfu = 29.2t
165mm / 5.83kfu = 28.3t
160mm / 5.83kfu = 27.4t
155mm / 5.83kfu = 26.6t
You won’t be buying a 26.6t chainring, so you’ll need to round down to 26t or up to 28t. If there are companies that offer odd-numbered rings, someone please comment down below.
Modern gearing is so low, I don’t think this is a critical change.
Does that help?
*kung fu units