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Automatic Primary Chain Tensioner

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Old 02-13-2008, 12:22 PM     #1 (permalink)
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Automatic Primary Chain Tensioner

Seriously thinking of fitting an automatic chain tensioner to the Road King in the very near future.
HB125 Hydraulic tensioner or the Hayden M6 can't make me mind up?
Any of you good people got experience of either? Any problems etc. All advice appreciated !

Thanks
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Old 02-13-2008, 12:44 PM     #2 (permalink)
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Re: Automatic Primary Chain Tensioner

not tried either but sent you a PM
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Old 02-13-2008, 01:01 PM     #3 (permalink)
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Re: Automatic Primary Chain Tensioner

Thanks.
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Old 02-13-2008, 01:15 PM     #4 (permalink)
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Re: Automatic Primary Chain Tensioner

The HB 125 is a better unit because it has the hydraulic feature to dampen out the chain whip. The Hayden just uses a spring action with shims.

Take a look here.

HB 125 or Hayden Tensioner - Harley Davidson Community
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Old 02-13-2008, 01:34 PM     #5 (permalink)
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Re: Automatic Primary Chain Tensioner

Sorry Glider didn't show up in the search I did
Thanks, good article !
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Old 02-13-2008, 02:29 PM     #6 (permalink)
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Re: Automatic Primary Chain Tensioner

Quote:
Originally Posted by Robbieroadking View Post
Sorry Glider didn't show up in the search I did
Thanks, good article !
That's probably because it wasn't there when you searched. I just added it.
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Old 02-13-2008, 11:21 PM     #7 (permalink)
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Re: Automatic Primary Chain Tensioner

i used the m-6 they have a big problem with the spring wearing out . they break right in half , to light of springs so if you use the m-6 order lots of springs . i
my self went to the automatic chain tensioner that is used on the i beleive the 07 HDs ,part#40063-05A , its a direct bolt in even on my old evo .i cant find my bill but i think its pretty much the same price as the m-6
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Old 02-13-2008, 11:26 PM     #8 (permalink)
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Re: Automatic Primary Chain Tensioner

The 07 tensioner works off a spring but also have a ratchet setup that keeps them up close to the chain unlike the M6 that only has the spring as the means of adjustment. Once the 07 tensioner adjusts up, it's held there by the ratchet setup and only a small spring tension is applied .

You can see the ratchet setup in these pics.

07 Primary Chain Tensioner Pics - Harley Davidson Community
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