CBR 1000F "Hurricane" 1987-1996 CBR 1000F

Sprocket change?

Old Mar 24, 2009 | 12:55 PM
  #1  
FargAT's Avatar
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From: Fargo, ND
Default Sprocket change?

Has anyone changed the stock sprocket to the larger one (with more teeth) and was it actually worth it?

I've been told that the gas mileage improves, the RPM in 6th are lower and there wasn't much, if any, loss of power. I think i remember someone mentioning that, due to the larger sprocket, a new (longer) chain may be needed as well?

What's your experience and how is it influenced your ride?

F.

(I've searched the 1000F forums, and couldnt' find anything relating to this question)
 
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Old Mar 24, 2009 | 01:27 PM
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Do a search. This has been discussed often.
 
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Old Mar 24, 2009 | 11:46 PM
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Paco's correct , but as you're new -
A bigger sprocket at the rear will raise your revs, accellerate quicker, lower top end, but LESS MPG. You can go to a 45 rear with a standard chain, so I'm told. Front sprocket with less teeth, ie 16 teeth not 17 (standard) will have the same effect.Better to increase rear than decrease front due to the smaller diameter on the front sometimes causing chain wear problems, and removing front can be a beeyatch !
Hope it's clear......
 
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Old Mar 25, 2009 | 01:42 AM
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Thanks for the clarifications. After re-reading my post, it was indeed a bit confusing.
Bottom line will probably be that I'm not going to experiment with something that may not even be needed and just leave her stock.
She rides great enough as it is, every single yard is actually truly enjoyable

F.
 
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Old Mar 25, 2009 | 12:47 PM
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Personaly, I wouldn't worry about chaning the gearing to get an MPG improvment. By changing one or two teeth on the rear, you'd change the RPM's by what a couple hundred at the most. If you went to far, you'd be lugging the motor....actually hurting your MPG numbers.

FWIW: I went to a 16 in the front (stock was 17), and noticed no change in my fuel range. Yes I realize the speedo/odometer is off, I'm saying the actuall distance hasn't changed. I'm actually thinking of going two teeth bigger in the rear when I replace the chain/sprockets again.
 
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