[Fot] clutch disc blow-up picture

Tue Dec 26 19:22:12 MST 2017

Hello Scott,

The GT6 Box does bolt right up to the Spitfire bellhousing no problems no modifications.  I'm using a stock pressure plate with a modified unknown BMC clutch disc.  Guess might have to check the Ted disc that has springs.

Bob T

-----Original Message-----
From: Barr, Scott <sbarr at McCarty-Law.com>
To: robertten1 <robertten1 at aol.com>
Sent: Tue, Dec 26, 2017 5:16 pm
Subject: RE: [Fot] clutch disc blow-up picture

Not certain what you mean by “GT6 box”.  I have used a Spit trans with the GT6 gears (or TR7 gears) in it.  Hard (impossible?) to use an actual GT6 box on a Spit engine.   I have used stock clutch disks with a good old Borg & Beck pressure plate.  I have also used Ted’s HD clutch disk (with the springs).  Good results all the way around.

Scott (B.)

From: Fot [mailto:fot-bounces at autox.team.net]On Behalf Of Bob Totten via Fot
Sent: Friday, December 22, 2017 1:49 PM
To: fot at autox.team.net
Subject: Re: [Fot] clutch disc blow-up picture

Curious,

What clutch disc(s) are the Spit racers using when using the GT6 box in their car?  And where do you get them ?

Bob T

-----Original Message-----
From: Brad Eells via Fot <fot at autox.team.net>
To: Rich Hahn <putinbaytr3 at yahoo.com>
Cc: fot <fot at autox.team.net>
Sent: Fri, Dec 22, 2017 2:44 am
Subject: Re: [Fot] clutch disc blow-up picture

Interesting...the Spitfire I have acquired was running the stock clutches available in the 1970's, ran hard (above 8000 rpm with a 1300), won lots of races but did not report any clutch failures in the copious notes I have.  

Of course, I don't know how often the clutch disc was being replaced. He had three gearboxes, all with different ratio or overdrive set ups and had them in and out depending on the track he was racing.

Wonder if the disc manufacturing is not of the same quality it was 40 years ago??

Brad Eells

Chino CA

#35 DP 1962 Triumph TR4

#76 FP 1969 Triumph Spitfire Mk3

1965 Triumph TR4A IRS...for the road!

On Thu, Dec 21, 2017 at 6:27 PM, Rich Hahn <putinbaytr3 at yahoo.com> wrote:

Stock Spit clutches even current heavy duty ones won't stand up to 7000 RPM.  I don't know if its the state of materials used today due to EPA regs but I ripped to pressure plate side friction material off a brand new one in less than 20 laps.  Finally went to a custom Quarter Master racing clutch and hydraulic release bearing which removed the release bearing and operating lever from the system.  Took some fabrication and experimenting but solved the problem

On ‎Thursday‎, ‎December‎ ‎21‎, ‎2017‎ ‎08‎:‎33‎:‎44‎ ‎PM‎ ‎EST, Brad Eells via Fot <fot at autox.team.net> wrote: 

Ted,

Is there a Spitfire version of this disc?

Thanks!

Brad Eells

Sent from my iPhone

On Dec 21, 2017, at 4:27 PM, Doug Mitchell via Fot <fot at autox.team.net> wrote:

Torn the center out of more discs than I care to remember. Second (and last) time I ran race tires in an autocross I really destroyed it. This on a 'stock' street Spit. 

On Dec 21, 2017 7:09 PM, "fubog1 via Fot" <fot at autox.team.net> wrote:

Y'all ain't blowed one up good unless there's shrapnel out of the bellhousing...!
Yes Merry Christmas!
Glen

-----Original Message-----
From: Joe Boruch via Fot <fot at autox.team.net>
To: fot <fot at autox.team.net>
Sent: Thu, Dec 21, 2017 6:02 pm
Subject: Re: [Fot] clutch disc blow-up picture

A stock clutch came apart for me at an autocross about 25 years ago and looked about the same as the one that Ted sent.  I don't recall if it was a DNF.  It was a street car that I drove to the autoX.  Had to get a friend with a trailer to give me a tow home.  Merry Christmas!  Joe(B)

From: Bill Tobin via Fot <fot at autox.team.net>
To: "Ted Schumacher" <tedtsimx at bright.net>, "FOT" <FOT at autox.team.net>
Subject: Re: [Fot] clutch disc blow-up picture
Date: Tue, 19 Dec 2017 20:28:09 -0500

I have one quite like that. Gave out after turn 11(last turn) on the last lap at the Glen a while ago.

Coasted across the finish line, got the checker, and parked just before turn 1.

Wasn't a DNF! Did get towed in though.

Dick Stockton helped push the car into my trailer. When it was in an I was looking for a block, Dick yelled "Put it in gear!" Smart a$$

Merry Christman and Happy New Year to all.

Cheers, Bill

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