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Sprockets?

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JASON ROSOLOWSKI

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Dec 13, 1994, 2:28:00 PM12/13/94
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I am going to start moto-cross racing this next season here in Michigan
and I would like to find out from some of you what you would recommend I
use for sprockets on the front and rear. I'm not really worried about
the brand as much as how many teeth on each. I am currently running a
54 tooth on back and a ...ummmm.... 13 on front I think (not sure).
It's a '91 CR250R. I am currently in the process of rebuilding the
bike. I am honing the cylinder out. Got an FMF pipe for it, an ANSWER
spark arrestor (I ride on USFS land also). I also have to redo the power
valves as they are pretty much shot. I also cleaned out the carburetor,
it was pretty bad. But anyway, if you could tell me what *YOU* would
recommend for sprockets, that would be great!
---
* QMPro 1.53 * Misspelled? Impossible. My modem is error correcting.

MARK ALLEN INGERSOLL

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Dec 15, 1994, 10:36:33 AM12/15/94
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Jason,

your question about sprockets really isn't that tough. Keep your front
sprokect and think about a 50 tooth for the rear for general all-around
racing. Generally, you want a large rear sprocket for tight tracks, sand,
or anything requiring good power (larger rear = power & acceleration).
For open tracks with fast straights or anything where speed is important,
use a smaller rear sprocket, say 48 teeth. (smaller rear = speed, less
acceleration).

Your bike sounds strong, I'd stick with a 50T or 49T and get used to it
on tracks before swapping sprockets for each track. A buddy of mine with
a '91CR has a 48T and he NEVER complains about not having enough speed or
power. Good luck on your venture into MX, you'll have a lot of fun.

Mark

Paul Favret

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Dec 15, 1994, 2:49:54 PM12/15/94
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My recomendation: Renthal !!!

Merrill Hoekstra

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Dec 19, 1994, 1:50:14 PM12/19/94
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One thing to be careful of when switching sprockets by more than one or two
teeth. Your chain may be too short/long when you change sprocket sizes.
This is especially frustrating to find out late at night when you were
planning to race the next day.

__________________________
Merrill Hoekstra, Colorado Springs, CO | 91 KTM 250 Woods Bike
hoekstramc%df...@dfmail2.usafa.af.mil | 87 CR 500 Harmful Side Effects
voice: 719-472-3080 AMA #533375, RMEC, Racers Under the Son, NETRA, D-37

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