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#701212 - 07/09/17 3:15 pm 3 spring clutch for A65 vs 4 spring  
Joined: Aug 2012
Posts: 553
Dana_twin Online confused
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Dana_twin  Online Confused
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Joined: Aug 2012
Posts: 553
Oregon
Sorry is this has been covered before, but the 4 spring clutch on my 66 Hornet is knackered beyond all hope.

Assuming I could find a *complete* later type 3 spring, could I use that for a direct replacement of the earlier 4 spring type?

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#701252 - 07/09/17 8:24 pm Re: 3 spring clutch for A65 vs 4 spring [Re: Dana_twin]  
Joined: Aug 2011
Posts: 188
bsawood Online content
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bsawood  Online Content

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Joined: Aug 2011
Posts: 188
Hailey,Id.
I had the same thing going on with my 65 Rocket. Ed at EV Engineering put together a complete 3 spring clutch for me for a reasonable price and I added a new SRM alloy pressure plate. A world of difference, much lighter lever and I only get a false neutral if I'm being sloppy.

JW

#701301 - 07/10/17 3:34 am Re: 3 spring clutch for A65 vs 4 spring [Re: Dana_twin]  
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Posts: 4,196
Mark Z Online content
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Mark Z  Online Content
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Joined: Aug 2001
Posts: 4,196
Owego, NY, USA
It works but you must replace the chainwheel along with the rest of the clutch. I'm assuming that's what JW means by "complete clutch".


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
#701418 - 07/11/17 7:47 am Re: 3 spring clutch for A65 vs 4 spring [Re: Dana_twin]  
Joined: Apr 2005
Posts: 2,332
Mark Parker Offline
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Mark Parker  Offline
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Joined: Apr 2005
Posts: 2,332
Bega NSW Australia
If the 4 spring centre is still good you can modify it to work with a 3 spring chain wheel, map make a nice 4 spring alloy pressure plate as well as the three. I use this set up with extra plates and 4 heavy springs to cope with the power of my 883 motor. So the 4 spring versions can be used to good effect when you need the extra clamping force.


mark
#701471 - 07/11/17 6:28 pm Re: 3 spring clutch for A65 vs 4 spring [Re: Mark Z]  
Joined: Aug 2011
Posts: 188
bsawood Online content
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bsawood  Online Content

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Hailey,Id.
I replaced everything. I ran around in circles with it for sometime,replacing the most worn out bits, but being 50 yrs. old it all had too much wear to really work as it should. A worn part has a tendency to bitch up a new part it comes in contact with. My hub center had too much wear also or I probably would have done something like Mark did.

#701499 - 07/11/17 10:20 pm Re: 3 spring clutch for A65 vs 4 spring [Re: Dana_twin]  
Joined: Jan 2014
Posts: 3,324
NickL Online content
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NickL  Online Content
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Joined: Jan 2014
Posts: 3,324
Aus
'map make a nice 4 spring alloy pressure plate as well as the three.' as do SRM, a worthwhile investment.

It seems that these days, bet kits are similar in price to replacing complete clutches, maybe worth looking at.
Some blokes used Trident clutches on 'em too.
I used a 4 spring when racing, better than the 3 spring by a mile. Not just spring weight but method of construction/operation.
You still can't beat Surflex plates either.




Moderated by  Allan Gill, Jon W. Whitley 


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