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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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  #21  
Old 6th April 2007
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Just curious has anyone checked to see what their mileage has changed when they change the pulley.
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  #22  
Old 14th October 2019
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Default 55 Tooth Rear, Pulley Gearing Option

Quote:
Originally Posted by Gone View Post
I just went back and read some more .. that 55 tooth I bought came from Adventure Harley out of Dover, Ohio here's a -link-

[url]http://www.hmhd.com/ Then do a search for Sportster Rear Pulley (use search box).

It's a bit expensive because you have to replace the drive belt also, you are dropping the diameter of the rear pulley and the 128 tooth is too long and must be replaced with a 125 tooth belt. Is it worth it, if you got the cash it is, would I do it again? .. you betcha, the ride is just too superior.
The option to a rear 55 tooth is a 32 tooth front. No belt change required, but there is modification to the pulley cover required.
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  #23  
Old 14th October 2019
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I have a 30 tooth front. Made a nice difference on the highway. Can't comment about power loss as I'm 90cid.
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  #24  
Old 15th October 2019
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Quote:
Originally Posted by Sportster1200 View Post
1. Do a Stage One upgrade with modded stock exhausts or slip ons- More power = Less RPMs to maintain your speed. $200 - $300 or so



2. Do a 1200 Conversion - More power = Less RPMs to maintain your speed. $800 - $1400 or so

I don’t think it works like that. You will get up to speed faster but the rpm to speed factor isn’t going to change unless the gearing is changed.

I went up 2 teeth from stock on the front pulley and down 2 on the rear. It has made it feel less buzzy out on the highway. My top speed has actually decreased because the engine can’t pull the bike to redline in top gear, but top speed in 4th gear and down has increased, it pulls easily to redline from 1st-4th, so 5th is like an overdrive now. When passing cars, trucks etc out on the highway I usually downshift 1 gear sometimes 2 depending on how fast I need to get around them. Riding slow in first gear requires a lot of clutch work now. I also fitted the heavy duty screamineagle clutch spring. Seems to be holding up so far.
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