Author Topic: Kohler steel ring gear  (Read 2907 times)

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Offline mcollins

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Kohler steel ring gear
« on: June 18, 2015, 03:41:26 PM »
Question for all you kohler guys.....Im thinking of taking a ARC aluminum ring gear and turning all the teeth off it so a stock steel ring gear can get pressed on it. Pretty much the same thing MWSC does but the ARC ring gear is not as wide so it would not have a shoulder on it.....in other words the steel ring gear would be pressed onto the alum ring and would be flush on both sides? Any thoughts on this? What would be a good press .002 ??


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Offline trbinrat

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Re: Kohler steel ring gear
« Reply #1 on: June 18, 2015, 06:05:37 PM »
Press fit for steel is .001 for every inch of diameter up to 6". Over that it's .0005 per inch of diameter.
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Offline mcollins

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Re: Kohler steel ring gear
« Reply #2 on: June 18, 2015, 06:29:56 PM »
Well your 10 min to late :doh: I made it the same as the stock press fit + .0005 lol. I wasn't sure if the steel being to tight would squish the alum ring out of round. Im letting it cool and I will try it tomorrow. I did use red lock tight and I might use 4 small allen bolts on the alum to steel seam to aid in holding it from moving??
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Offline Gui961

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Re:
« Reply #3 on: June 18, 2015, 07:28:10 PM »
renthal dual metal sproket are similar to what your making
http://btosports.com/mm5/graphics/00000001/renthal-twinring-rear-sprocket-silver.jpg
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Offline mcollins

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Re: Kohler steel ring gear
« Reply #4 on: June 19, 2015, 09:00:34 AM »
In case anyone was wondering it works great!! I did install 4 roll pins instead of small bolts but there is no slip and runs true
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Offline leman

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Re: Kohler steel ring gear
« Reply #5 on: June 20, 2015, 06:14:49 PM »
Sounds like an great idea!  Could you take a picture of it?  
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Offline Nkaratzas89

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Re: Kohler steel ring gear
« Reply #6 on: June 20, 2015, 07:33:45 PM »
Really smart idea!
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Offline cycloneracer

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Re: Kohler steel ring gear
« Reply #7 on: June 20, 2015, 09:37:05 PM »
The Zach Kerber flywheel uses the stock steel ring gear.  

I'm running the most compression he has built to "test" his parts.  Starts like a champ and shows no wear.  
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Offline George Herrin

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Re: Kohler steel ring gear
« Reply #8 on: June 21, 2015, 11:37:03 AM »
I do it to our Tecumsehs all the time. Good Luck wioth the stock diameter. didnt work for me. it moves once up to temp. I been putting mine at .020 over the stock diameter. The last one was .030. I get it cherry red (ring gear) the set flywheel down in it. Then cool not completely  though so the heat doesnt effect magnet. Works just fine, no screws no locktight  nothing.
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Offline mcollins

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Re: Kohler steel ring gear
« Reply #9 on: June 23, 2015, 11:37:33 AM »
sorry i haven't been on in a day or so. I will try to post pics....never had any luck doing it though. George thats what i had to do to get it on so maybe Kohlers are tighter from the factory?? I will let you know if it works after saturdays race.
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Offline Nkaratzas89

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Re: Kohler steel ring gear
« Reply #10 on: June 24, 2015, 02:08:44 PM »
Ill be there Saturday, definitely interested to see how it turns out!
Nico
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