14 tooth front sprocket questions.

Im thinking off swapping the gearing on my naked curvey from a 15t front sprocket to a 14t. Will i need a new chain and rear sprocket when i do this or will i be ok just changing the front sprocket?

Thanks

changing it to 14 tooth will mean the chain is now too big, logically it means you will get lots less miles from the chain due to not being able to adjust it any more.

Im not sure how much difference in chain lengths there is changing to 14 tooth, im sure someone will be here soon to confirm

You should have enough adjustment on the rear axle to take up the slack on the existing chain. Getting the front sprocket off can sometimes be tricky and require a nut gun to loosen it depending who has torqued it up and how long ago it was touched. Why change to a 14T anyway - we race with a 15 on nearly all circuits and are not disadvantaged generally. Changing the rear sprocket by adding teeth (say from a 44 to 46) has almost the same effect and is easier to accomplish?

I believe the ratio is 3 teeth on the rear to one tooth off the front. I run a 14 front but I may move to a 15 as coming out of tight bends you do get a big lump of torque which you have to manage with the throttle which can be interesting with a quick action throttle . If your changing the sprockets I would recommend doing a 520 conversion.

Originally Posted by warrenhewitt10

changing it to 14 tooth will mean the chain is now too big, logically it means you will get lots less miles from the chain due to not being able to adjust it any more.

Im not sure how much difference in chain lengths there is changing to 14 tooth, im sure someone will be here soon to confirm

What a load of tosh!

Why post this tat?

If you don't know, don't post!

Bigchris,
Its fine. We gear bikes plus or minus 2 teeth on the front and up to five on the back and the same chain works, and amazingly, doesn't wear out any quicker either!

The only one to watch for is down on the front and the back as this can wear the Swing arm. But one tooth down on the front is absolutely no problem. Have you bought your sprocket yet, because if not, I've got a load of 14's here and I think some of them are brand new. You can have a used one for the price of the postage (still in good nick).

C

[yorkie_chris]

It will probably be fine. If your chain and rear sprocket are badly worn you should replace those too.
There will probably be room to take up slack unless in case of bad wear.

I don't like 14t front, it increases chain stress and thus wear. Better IMO to increase teeth on rear.

Originally Posted by coxxy

Changing the rear sprocket by adding teeth (say from a 44 to 46) has almost the same effect and is easier to accomplish?

It is only easier if you have the slack available to take up on chain.

not sure.... was thinking about it logically, smaller sprocket at the front, shorter chain? am I wrong?

14 front will ware the guide and chain, go with a 2 or 3 up on the back

Well, I've just measured the bikes in the garage with both a 14 and a 15 tooth on them and it from what I've just measured, it ain't. There's going to be fractionally more wear on the guide and you'd be lucky to wear it out in three years. Going down to a 12 maybe would.

C

Originally Posted by Berlin

What a load of tosh!

Why post this tat?

If you don't know, don't post!

Bigchris,
Its fine. We gear bikes plus or minus 2 teeth on the front and up to five on the back and the same chain works, and amazingly, doesn't wear out any quicker either!

The only one to watch for is down on the front and the back as this can wear the Swing arm. But one tooth down on the front is absolutely no problem. Have you bought your sprocket yet, because if not, I've got a load of 14's here and I think some of them are brand new. You can have a used one for the price of the postage (still in good nick).

C

Sent you pm mate,