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883 primary sporcket on 1200

 
  #21  
Old 01-09-2019, 04:27 PM
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I think which model (883/1200) came with what is going to vary depending on the year.
The reason I say that is because my 2013 Iron 883 came with a 29tooth front pulley.
(which I switched out to a 30tooth export/international pulley)

Anyway, sounds like the "best" you could do (with alot of effort & outlay of cash
and without changing the primary chainset) is to swap the front to a 28t pulley
and the rear to a 70t pulley.

T.
 
  #22  
Old 01-09-2019, 04:37 PM
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Not sure I would do both but that would depend on the results of the first swap.
 
  #23  
Old 01-09-2019, 04:54 PM
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The part finder I mentioned was referring to both models as 2007's.
 
  #24  
Old 01-09-2019, 07:16 PM
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Seems to me 600 RPM at 70 MPH would barely be noticeable and from what i can understand it certainly does not hurt the engine. I did a 1275, 100 plus HP Hammer conversion to my 883 so it would accelerate like crazy, which it does with stock gearing ! : ) I don't have the ***** to see what the top speed is but it will hit 100 mighty quick!
 
  #25  
Old 01-09-2019, 07:23 PM
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Originally Posted by misput View Post
I did a 1275, 100 plus HP Hammer conversion to my 883 so it would accelerate like crazy, which it does with stock gearing ! : ) I don't have the ***** to see what the top speed is but it will hit 100 mighty quick!
That is quite a testimonial, I'm sure the guys at Hammer would be proud. That would be a great advertising tagline for them.

"Your bike will be so scary powerful you won't have the ***** to see it's top speed" - Hammer Performance

John
 
  #26  
Old 01-09-2019, 10:08 PM
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2007 Sportsters ran 2 different tranny pulleys. The 883 ran a 28 tooth front pulley part number 40379-04. The 1200 ran a 29 tooth part number 40409-04. And the HDI (international) 30 tooth part number 40380-04. I installed a HDI sprocket on my wife 2007 883L and is now so long winded through the gears and have to shift a lot less.
 

Last edited by Hal64hd; 01-09-2019 at 10:13 PM.
  #27  
Old 01-10-2019, 12:12 AM
handirifle
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Originally Posted by misput View Post
Seems to me 600 RPM at 70 MPH would barely be noticeable and from what i can understand it certainly does not hurt the engine. I did a 1275, 100 plus HP Hammer conversion to my 883 so it would accelerate like crazy, which it does with stock gearing ! : ) I don't have the ***** to see what the top speed is but it will hit 100 mighty quick!

LOL I can only imagine. My first freeway run on my 1200. After coming to the bottom of a grade at about 65. I cranked it open, not even all the way, and it hit 90 very quick. Mine is stock, and adding 30 hp would be mind boggling, and top that off with 883 gearing......wow!

I have no doubt you would redline before it hit its true potential.
 
  #28  
Old 01-10-2019, 02:32 AM
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Originally Posted by handirifle View Post
As the title says, wondering if anyone swapped out the primary drive belt sprocket from an 883 to a 1200 and what you thought about it later. I ask because 1st gear is so rediculously tall on my 1200. I know it affects ALL gears so wondering what overall impressions were.

As I understand what I have been reading, the 883 has lower gear primary sprocket and final sprocket, yes? No? I don't want 70mph RPM's to go nuts though.
If your talking about changing out the front pully to 1 tooth smaller on ya 1200.

Yes and Yes, 2017 1200 custom

Wiz 👈

I Dropped 1 tooth on the front
 
  #29  
Old 01-10-2019, 08:47 PM
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What was the end result? Did it make any or much difference in first gear? My main concern would be very slow speed handling. Stock mine seems to cruise at 10-15 mph at idle. Any change to that?
Thanks
 
  #30  
Old 01-10-2019, 11:00 PM
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Well this is why I did the front pulley change out on my bike and ratio wise, Just dropping 1 tooth on the front pulley is like 2 on the rear.

The main reason for this was I was riding 2 up with the wife 75% of the time the bike was out and about.

I too found the 1200 custom had an excessive long first and that fanning the clutch was a real pain in the *** at low speeds either just riding solo or with the wife in tow on a short trip up the hills.

After the change I found the bike to pull cleaner off the line from lights 2 up with less clutch action = slip ( you know what I mean ) and riding solo the bike had an extra snap do to the lower ratio.

The speedo change was about 2 mph, but if you have a tuner ( like the power vision ) you can change the pulse pickup to make adjustments, I found the speedo to be about 2 mph out with this mod

The change over process was not hard at all with the right tools, but consider you might have to ( like I did ) get a shorter drive belt as yours might have stretched beyond the required tension with the smaller diameter front pulley now in place.

Was it worth the pissing around yep, just wouldn't drop the ratio any lower unless ya want to be revving ya **** off at highway speeds.

Wiz out
 

Last edited by Wizardofaus; 01-10-2019 at 11:03 PM.

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