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883 primary sporcket on 1200

 
  #41  
Old 01-12-2019, 11:37 AM
handirifle
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Wow good info again. I don't intend to swap primary (in spite of my title) and will end up going to the 28t front belt sprocket. That will most likely be enough especially after looking at those ratios posted. The 883 primary gearing is just too low for on road applications in a 1200, for me anyways.

 
  #42  
Old 01-12-2019, 11:46 AM
handirifle
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I am going to save these ratios off line. Good stuff to know. Someday I would love to snag a solid mount sporty and make a dual sport, to what ever level I could afford, and those ratio calcs help make for a solid understanding. A dual sport does not need to cruise at 75-80 in my mind anyway, but that low gearing would sure make off roading easier. There sometimes slower is a LOT better.
 
  #43  
Old 01-12-2019, 12:11 PM
handirifle
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This https://slo.craigslist.org/mcy/d/san...778129220.html would be a good starting point. Wish I had the cash to getvthis. Setup great as a dual sport donor. Duals in front, 883 gearing and spoked wheels.
 
  #44  
Old 01-12-2019, 12:29 PM
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Originally Posted by handirifle View Post
This https://slo.craigslist.org/mcy/d/san...778129220.html would be a good starting point. Wish I had the cash to getvthis. Setup great as a dual sport donor. Duals in front, 883 gearing and spoked wheels.
That one is nice indeed, but I would go a different route & create a hardtail from it.

T.
 

Last edited by WKNDS; 01-12-2019 at 12:35 PM.
  #45  
Old 01-12-2019, 01:08 PM
handirifle
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My back would not allow that.
 
  #46  
Old 01-12-2019, 01:46 PM
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Originally Posted by handirifle View Post
Do you think the dealer could do that?
Oh yes the dealership can do it , I got a quote of $185 bucks to do the job, and thatís just for labor after I supply all parts for them to install.
Then telling me that they had to use special tools and stuff to do it.
You can get the front pully holder from Dennis Kirk and a breaker bar from harbor freight for change and ya golden. Only thing I had to get extra was an exhaust gasket.

Wiz 🍻
 

Last edited by Wizardofaus; 01-12-2019 at 02:01 PM.
  #47  
Old 01-17-2019, 11:38 PM
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I have an exhaust gasket for the head, but would need a new one for the crossover pipe. Looking forward to this swap.
 
  #48  
Old 01-18-2019, 11:37 PM
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Originally Posted by handirifle View Post
I have an exhaust gasket for the head, but would need a new one for the crossover pipe. Looking forward to this swap.
Enjoy

Wiz 🥃
 
  #49  
Old 01-21-2019, 05:59 AM
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on a 2008+ US spec Sportster 1200. with pulleys of 29/68 at about 70 mph, the difference in 34/57 and 38/57 ratios gives the 34/57 combination about 400 more rpms at 70 mph.

34/57 @ 70.1 mph = 3650 rpms
38/57 @ 70 mph = 3250 rpms

Here is an online calculator for gear ratios-
(you may need to enable java script for the site)

https://www.gearingcommander.com/
 

Last edited by shanneba; 01-21-2019 at 06:01 AM. Reason: java note
  #50  
Old 01-21-2019, 08:37 AM
handirifle
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Thanks. awsracing posted a complete rundown of the ratios a few posts up. My thread title has confused everyone. I only mean to swap the front belt sprocket not the primary. Sorry for the confusion there.
 
 


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