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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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  #71  
Old 23rd August 2019
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Default Final Gearing Choices

Quote:
Originally Posted by Tomcatt View Post
Basically the same for me. 28T with a 150/70-17 rear tire. The math says 20.7 mph per 1,000 rpm in 5th. 83 mph @ 4,000 rpm in 5th. My tach and GPS agrees.

I like my Sportster but if I want to cruise @ 70+ mph (or 100+ mph) I do it on my BMW. It runs fast effortlessly which the Sportster really doesn't.
For those that like the 4000 rpm buzz, great! But if you don't, there are choices, all you need to do is change a pulley or two.
For the 2004-Up Sportster, the rear 68 can be changed to a 66 (2.9%) and the front 28 changed to a 32 (14.3%) for a combined change of 17.2% the 4000 rpm at 80 mph is reduced to 3312. There are choices of 28, 29, 30, 31, & 32 as well as the rear, 66 directly or 61 with a spacer. The rear tire can also be changed, without modification, from 150 to 160. There are choices available. Just decide on what you want, match it to available methods and away you go! Make your Sportster into whatever you want it to be.
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  #72  
Old 23rd August 2019
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30t front pulley and 66t rear on my XR at the moment .. 75mph is around the 3800rpm area.
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  #73  
Old 23rd August 2019
hammer6315 hammer6315 is offline
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Originally Posted by Ronan978 View Post
Thank you Definitely not my best day , but still very lucky. I had some witnesses also pull over , amazed that I didn’t go down. They said they’d be there if I needed them for anything.



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WOW! You must have a good guardian (angel) watching over you! Glad you survived. Hope the insurance company does you right.
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  #74  
Old 23rd August 2019
Ronan978 Ronan978 is offline
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Originally Posted by hammer6315 View Post
WOW! You must have a good guardian (angel) watching over you! Glad you survived. Hope the insurance company does you right.


That’s exactly what my wife said thank you and me too


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