Gearing.....

[saveaux]

We have a course here that I am constantly switching between 2nd and 3rd gear. I am in 2nd 60-75% of the time and 3rd 25-40%. I would like to switch that and be in 3rd more. Would a 12 tooth up front be dramatic enough to make 3rd have enough bottom end to compensate for 2nd gear?

I know that it would be best to go with a larger rear sprocket, but then I would have to add links to my chain and buy a larger chain slider. I am trying to stay on a budget and I don't think this is the best approach for my financial situation right now. When everything DOES get worn down and I DO have to buy a new chain, both sprockets and chain slider, what will my best ratio be? 13/51? (Does this require a 110 link chain?)

If a 12t up front will do what I'm hoping will I need to remove a link out or will it work with the stock sized chain?

 

[robwbright]

Drop 1 tooth up front = 3 or 4 teeth larger in the rear.

Having done it myself, I can say you WILL notice the difference. It could be more change than you want . . . but hey, a front sprocket is only like $15-$18, so go for it.

 

[KDteX00]

I recently tried it too, and found the difference to be too much for my liking. Significant low-end torque gain, but alot more shifting (as expected). For your particular track it might be just what you are looking for.

 

[KDteX00]

Forgot to say, your 108 chain will work with the 12.

 

[FruDaddy]

There is a good chance that you will have to take out a link, it depends on how much adjustment is left at the axle. Also, if the chain is worn, the life of a new sprocket will be dramatically reduced. Of course, steel won't wear as fast as aluminum. Most fronts are steel, the rear can go either way.

 

[saveaux]

Thanks alot guys, sounds like I'm on the right track but it might be too much. I will try it out, it very well might be perfect for our course.

 

[john_bilbrey]

You can go to a 50T in the rear, prolly just about right for you. BTW, I did not have to get a new slider/guide with the larger rear sprocket, although I did have to get a 110 link chain.