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Sportster Motorcycle Transmission, Clutch, Primary & Secondary Drive Transmission, Clutch and primary or secondary drive problems, advice, and/or how tos.

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  #1  
Old 3rd October 2006
reindeer's Avatar
reindeer reindeer is offline
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Join Date: Aug 2006
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Sportster/Buell Model: xl 883/1200 conversion se
Sportster/Buell Year: 1990
Other Motorcycle Model: yamaha yz 450f
Other Motorcycle Year: 05
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Default taller gear

I have an 90 model 883/1200 conversion. It's chain driven w/a 4-speed tranny.The little pig is very hot thru the 1/4, but the vibration at high crusing speeds is brutal(70 to 80). From the plant it rolled 21t in the front and 49t rear. I went to 50t rear about a year ago ,and it helped a bit without losing lowend pull. I just bought a 22t for the front hoping it will solve this issue,but I was considering 22t & 51t . I assume I will have to buy a longer chain as well. Has anyone ran this gear? I can afford to lose a bit of low end.I built the bike as a barhopper/worktruck,but I like to make local runs & rallies.Any useful info?
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  #2  
Old 3rd October 2006
decman decman is offline
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Sportster/Buell Model: 1200S
Sportster/Buell Year: 2001
Sportster/Buell Model #2: XLH-883D
Sportster/Buell Year #2: 1988
Other Motorcycle Model: FXDXT
Other Motorcycle Year: 2001
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My 1988 came stock with 21T Front 48T Rear
I went to a 22T/46T combo, I like it a lot.
Less RPMs at higher MPH

Going to a 50 after a 49 should have made higher RPMs.
at any given speed. 51 would be worse.
Remember higher front and/or lower rear gets that
lower RPM I think you are looking for.
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  #3  
Old 3rd October 2006
Kentucky Kentucky is offline
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Location: The Sticks
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Sportster/Buell Model: XL1200RSC Roadster
Sportster/Buell Year: 2004
Sportster/Buell Model #2: DT400B
Sportster/Buell Year #2: 76
Other Motorcycle Model: 04-FZ6, 06-350 Wolverine,
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52x23= 2.26
51x22= 2.31
49x21= 2.33
52x22= 2.36
50x21= 2.38
52x21= 2.42

Take your pick. The lower the ratio in number, the easier it will run at higher speeds. The higher the ratio, the better it will run at lower speeds in terms of pull.. Welcome to the forum....
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Old 3rd October 2006
Gone Gone is offline
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Reindeer,

Welcome to the XL Forum......


Harley
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