Cyclocross Magazine

Cyclocross Community, Forums, Classifieds, Photos and Videos

I'd really like to race a nova race single speed this year, there are vertical dropouts and I'm wondering if anyone out there have successfully set up there nova with a "majic ratio" to not need to use a chain tensioner. 

 

The chainstays are 425mm in length like most bikes, so if you have set a bike up with 425mm chainstays, please let me know what ratio you did an how you liked.  

 

I used this website to find the following compatible gears for 425mm chainstays.

 

http://www.eehouse.org/fixin/javafmu.php

 

They show me that the following would work.

 

34x16

43x18

41x16

 

Thanks for any help.

 

Views: 535

Reply to This

Replies to This Discussion

34/16 is great for spinners. I ran that last season. Upgrading to a 36/16 becuase I am able to push bigger gears w/ more training under my belt. 43/18 is a tad high for any mud/hills, same with the ridiculous 41/16.
So far, 43x18 is the only one that works...sort of. There's a bunch of slack in the chain, but not enough to make the chain come off.  I've tried 44/18, 42/19, everything around there and it is all way too tight.

I'm not sure if you've seen the Eccentric hub from White Industries; it would solve all of your chain length problems.     

http://www.whiteind.com/rearhubs/singlespeedhubs.html

 

Good luck finding the magic gear.

 

 

 

 

Yes, I've used it, and it works, but it also costs a lot more and adds a ton of weight when you add the freewheel. 

 

I got 34/16 to work really well, just a little tight.  I'll ride it for a while and see how it goes.  I'd like to get the 32/14, it should work better, but can't find any 172.5 cranks with the 104mm bcd or capabilities to run a 32 except for, you guessed it, white industries.

 While surfing CX porn at work - now who does that? I stumbled across this site - don't worry it isn't porn :)

 http://www.shopcandycranks.com/ 

 

Scroll down and you’ll see that they make a 32 tooth chain ring that can run on a 94 or 110 BCD crank set.

A little pricy I know, but you could run 32/14 on compact cranks.

 

Back to surfing...I mean work.....

 

 

The 34x16 worked all year without a single problem.  The jamis is 425mm chainstays(published) and the gearing was pretty good for fast ss races.  Chain stretched just a little, but not enough for the chain to ever come off. 

RSS

Sold something in our classifieds? Find this site valuable?

Consider a donation to the cause. We're cheaper than eBay fees, and it helps us here at CXM keep the lights on!

Enter any amount below, and click on the cow for some good karma. Thanks!

Amount:



Badge

Loading…

© 2024   Created by Cyclocross Magazine.   Powered by

Badges  |  Report an Issue  |  Terms of Service