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Old 02-22-2011, 07:58 PM   #1
DurtKlod OP
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Anybody running a 13 tooth front sprocket on a KLR650?

2011 Kawasaki KLR650 - The bike came stock with a 15 tooth front sprocket. It didn't have enough low end for me so I dropped it down to a 14. It's lots better but still not quite low enough. I'm thinking of dropping it down another to a 13.
I'm wondering if I do drop it to a 13, will I have to change the chain because the teeth are further apart? And... if I change the chain, will I have to change out the rear sprocket to match?
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Old 02-22-2011, 08:39 PM   #2
Tosh Togo
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Quote:
Originally Posted by DurtKlod View Post
2011 Kawasaki KLR650 - The bike came stock with a 15 tooth front sprocket. It didn't have enough low end for me so I dropped it down to a 14. It's lots better but still not quite low enough. I'm thinking of dropping it down another to a 13.
I'm wondering if I do drop it to a 13, will I have to change the chain because the teeth are further apart?
No, a 13T sprocket, or any other in the same tooth-pitch range, will have the same spacing between each tooth.

btw- going one less, to a 13t cs sprocket, will be a bigger change than losing the first tooth was*. It's also really hard on your chain to run a teeny front sprocket like that. A better way would be to add a few teeth to the rear sprocket instead, for a smaller net change.



*15 to 14t is ~ 7% reduction in speed for a given rpm: 15/14= 1.071

14 to 13t is ~ 7.5% reduction in speed for a given rpm: 14/13= 1.077




Quote:
Originally Posted by DurtKlod View Post
And... if I change the chain, will I have to change out the rear sprocket to match?
Maybe. That depends on how old the existing parts are.
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Old 02-22-2011, 09:11 PM   #3
Gray_Rider
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If you go to a 13T, you will find you run out of revs quickly at highway speeds. So to maintain a decent road cruising speed, you will have to rev the shit out of it.
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Old 02-23-2011, 01:49 AM   #4
kens_Moto650
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KLR gearing

I run 14t and 46t on my klr its pretty good for a range of things,really perks it up. Im not into big distances though, it can still overtake cars at 120km/h with that gearing.
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Old 03-03-2011, 05:38 PM   #5
NDTransplant
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I ran a 14/47 for 'off-road' stuff, and put a 16 on the front for road/normal use, which is close to stock gearing.

The 14/47 was nice for trying to pretend I had a real dirtbike....really revved the crap out of it for highway use, though.
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Old 03-03-2011, 09:09 PM   #6
farrington300
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put a 45 on the rear, then switch between 14 and 16 on the front for off road/road.
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