Hey all, I'm looking to get a freecoaster to put on a 24" DJ/park bike. It comes with a 9 toof driver and was wondering what chainwheel to use. Right now I rock a 28-12 and want to keep that same ratio. I know about Sheldon's calculator, just want to see what you all are using.
What size chainwheel to use?
- Thread starter j.les
- Start date
58 is still fine. u wont notice much of a difference at all. my friend had a 59 and i thought it was a 50-51. u will be fine.
see there is a real life use for basic algebra.
x / 9 * 24 = 56
divide both sides of the equation by 24.
x / 9 = 2.33333333
multiply both sides by 9.
x = 21.
The correct answer is 21/9 gearing. It's exactly the same as 28/12. They both divide to be 2.3333333333333.
I don't know of any cool bmx sprockets that are 21. I think you'd be better off getting a 12 cog on your freecoaster, and keep your same setup.
x / 9 * 24 = 56
divide both sides of the equation by 24.
x / 9 = 2.33333333
multiply both sides by 9.
x = 21.
The correct answer is 21/9 gearing. It's exactly the same as 28/12. They both divide to be 2.3333333333333.
I don't know of any cool bmx sprockets that are 21. I think you'd be better off getting a 12 cog on your freecoaster, and keep your same setup.
switch it out for the 11t driver. the uber small front chainwheels keep cracking and are not that dependable. i run a 26t e13 micro guide and 11t rear on my 24 bike with the geisha
