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Re: [Fot] Clutch Failure in GT6

To: "jkhagen@charter.net" <jkhagen@charter.net> a=CZRG58j9FUsA:10 a=4XwCEAaBuO8A:10 a=kj9zAlcOel0A:10 a=/OVrlmhq//2RpgypEVCpDA==:17 a=hOpmn2quAAAA:8 a=zOoktvdPAAAA:8 a=JcvzPq48AAAA:8 a=mkkZP590AAAA:8 a=ojoVgRTdCapdxNXOxL0A:9 a=CjuIK1q_8ugA:10 a=J0aUVQLP0FIA:10 a=791LmTZUnaEA:10 a=waLcg52ezjEA:10 a=m3MdUl94G8cA:10 a=hUswqBWy9Q8A:10 a=LuNFSA0Xe1kA:10 a=/OVrlmhq//2RpgypEVCpDA==:117 reip=0.000, cl=1, cld=1, fgs=0
Subject: Re: [Fot] Clutch Failure in GT6
From: John Hasty <jhhasty@gdhs.com>
Date: Sun, 28 Jul 2013 12:50:07 -0400
Cc: 'Friends of Triumph' Triumph <fot@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <60619cb7.a246fb.14025c12f2e.Webtop.45@charter.net>
Same advice the engineer @ SPEC gave me. Sprung center for RR. We have used
their stage 3 unit for almost three yrs. no problems.

Sent from my iPhone

On Jul 28, 2013, at 10:49 AM, jkhagen@charter.net wrote:

> We have found a one person shop in North Branch Mn--"The Clutch Doctor"--he
can build most anything.  We us a"One Piece" disc--no rivets-no 'Marcel" with
ceramic buttons.  Don't need "Marcel" in the fins for smooth takoffs--ie
street.  Ceramic buttons run cooler and can take more oil. Must use steel
insert if using aluminum flywheel.  Sprung center section is advised for road
racing--ie not solid disc.
>   I used to build my our clutches when I worked for a clutch manufacturer.
We built 100M units per year.  I used to give clinics on clutches---sooo
Questions 763-684-1617.  John Hagen  TR-4 -  TVR Grantura
>  Clutch Doctors' name is Trevor  @  651-674-4175
>
> On Fri, Jul 26, 2013 at 9:35 PM, Scott Janzen wrote:
>
>> I ran the Schenley Park GP in Pittsburgh this past weekend - a fantastic
>> event, racing on city streets- I'll be back.
>> It is, however, hard on the car, and once again I've found the weak link.
>> The clutch disc center basically ripped out - the metal around only one of
>> three rivets was still intact.
>> So, it's a stock disc and pressure plate, never given trouble before,
probably
>> on its 3rd-4th season.  Should I just replace it, or is there an easily
>> adaptable upgrade that's stronger?
>>
>> It's an 8-1/2" disc, 23 spline - the car has a TR4-6 gearbox in it (the
GT6
>> box was the old weak link) and a good aluminum flywheel I got from Ted
that
>> I'd hate to give up on.
>>
>> What is being used out there - given that I have a TR4-6 box with the
>> cross-shaft/fork arrangement, I'm guessing whatever you TR4 racers have
done
>> might work too.
>>
>> Scott
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