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Author Topic: Gear drive differences  (Read 3287 times)

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snowrider13

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Gear drive differences
« on: June 03, 2015, 03:46:58 PM »
What is the difference(s) in 1999-2006 and 2007 and up gear drive cams? Thanks.
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MrSurly

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Re: Gear drive differences
« Reply #1 on: June 03, 2015, 04:22:45 PM »
The inner bearing end of the cams are different diameters early/late style
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Twolanerider

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Re: Gear drive differences
« Reply #2 on: June 03, 2015, 04:34:09 PM »
... and most of the newer bikes don't have tolerances good enough so safely use gear drives.
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jachd17

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Re: Gear drive differences
« Reply #3 on: June 03, 2015, 06:50:15 PM »
Quote from: Twolanerider on June 03, 2015, 04:34:09 PM
... and most of the newer bikes don't have tolerances good enough to safely use gear drives.
And that........ is a damn shame.
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snowrider13

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Re: Gear drive differences
« Reply #4 on: June 03, 2015, 07:06:52 PM »
Looking to use a S&S MR103 in a 2003 RK. Guess that will not happen. Thanks
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Zee110

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Re: Gear drive differences
« Reply #5 on: June 03, 2015, 08:24:50 PM »
Quote from: snowrider13 on June 03, 2015, 07:06:52 PM
Looking to use a S&S MR103 in a 2003 RK. Guess that will not happen. Thanks


I put a set of easy start S&S MR103 chain drive cams in wife's bike  2013 fatboy low, they work really good, I like them  :2vrolijk_21:
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grandpadoc

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Re: Gear drive differences
« Reply #6 on: June 03, 2015, 08:37:34 PM »
Chain drive allows for more slop so why make expensive precision cranks. I have S&S gear drive cams on my early twincam and am fortunate to have very little run out. IMO considering the single crankpin design that the evo with its gear drive cams was the last great motor from Harley.
« Last Edit: June 04, 2015, 10:11:17 AM by grandpadoc »
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mike jesse

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Re: Gear drive differences
« Reply #7 on: June 04, 2015, 04:13:01 AM »
Randy @ Hyperformance can convert late style cams to work on the early engines.

We now have an economical way to turn your expensive cams from early to late or vice-versa by installing
these Torrington bearing races.
Convert early to late
HMS 309 $114.00
HMS 310 Convert late to early
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snowrider13

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Re: Gear drive differences
« Reply #8 on: June 04, 2015, 07:46:03 PM »
Thanks Mike I will check them out.
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HILLSIDECYCLE.COM

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Re: Gear drive differences
« Reply #9 on: June 05, 2015, 07:02:14 AM »
We used to perform that machine shop service, and even drop-ship them for Bob Wood.
Easy, peasy. :)
Scott
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phato1

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Re: Gear drive differences
« Reply #10 on: June 05, 2015, 09:39:48 AM »
Modifying or changing the cam bearings won't  help much if the crankshaft  runout  is beyond the recommended  limits for installation of the gear drive setup.

The gear drive setup allows for more precise  timing and will eliminate the wear concerns that are inherent to the cam chain tensioners.
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DCFIREMANN

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Re: Gear drive differences
« Reply #11 on: June 05, 2015, 01:12:36 PM »
Quote from: Twolanerider on June 03, 2015, 04:34:09 PM
... and most of the newer bikes don't have tolerances good enough so safely use gear drives.

EXACTLY!!!!!!

Be Safe

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DCFIREMANN

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Re: Gear drive differences
« Reply #12 on: June 05, 2015, 01:13:23 PM »
Quote from: jachd17 on June 03, 2015, 06:50:15 PM
And that........ is a damn shame.

Again!!! EXACTLY!!!!!

Be Safe

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snowrider13

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Re: Gear drive differences
« Reply #13 on: June 05, 2015, 05:26:07 PM »
Mike, where is this Hyperformance located?
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grc

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Re: Gear drive differences
« Reply #14 on: June 05, 2015, 07:13:41 PM »
Quote from: snowrider13 on June 05, 2015, 05:26:07 PM
Mike, where is this Hyperformance located?

Pleasant Hill, Iowa

http://kingofcubes.com/

Jerry
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