BritishV8 Forum: Re: Driveline Design, 10.5" clutch ?, update

roverman
Art Gertz
Winchester, CA.
(2288 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Driveline Design

Posted by: roverman
Date: March 15, 2012 10:10PM

AC 6.1 get's Boxter S (6) speed transaxle, wc's ? "The further out I swim, the longer back to shore".Kind of how I feel now. I "might" be able to use Vette C5 torque tube to Porsche t-axle. This should add beam and torsional stiffness to JH tub. Inboard disk(s) would be desireable, tbd. I would also like a double disk 7 1/4" clutch, mounted back at the t-axle. Keeping the super lightweight aluminum driveshaft, "live" with the engine, should make it dynamically stronger,(inertia) and reduce syncronizer work load. Has anyone seen this done? A picture would be great. Onward, roverman.

Edited 3 time(s). Last edit at 03/15/2012 10:23PM by roverman.

DiDueColpi
Fred Key
West coast - Canada
(511 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
You can't turn a pig into a racehorse, so the question becomes, how fast can this pig go?

authors avatar

Re: Driveline Design

Posted by: DiDueColpi
Date: March 16, 2012 01:45AM

Yep, check out the Alfa Milano or GTV 6.

roverman
Art Gertz
Winchester, CA.
(2288 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Driveline Design, rear clutch

Posted by: roverman
Date: March 16, 2012 12:05PM

Ok, I googled, but no pictures. I need pictures. I prefer not to buy a manual. Thanks, roverman.

DiDueColpi
Fred Key
West coast - Canada
(511 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
You can't turn a pig into a racehorse, so the question becomes, how fast can this pig go?

authors avatar

Re: Driveline Design

Posted by: DiDueColpi
Date: March 18, 2012 08:16PM

I've got one down at my shop.
will snap some pictures for you on monday.

DiDueColpi
Fred Key
West coast - Canada
(511 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
You can't turn a pig into a racehorse, so the question becomes, how fast can this pig go?

authors avatar

Re: Driveline Design

Posted by: DiDueColpi
Date: March 21, 2012 04:09PM

Hey Art it's no exactly monday but here you go.

That's the trans axle. Uses inboard brakes that aren't on this one at the moment.
This is the clutch. It's just a bell housing with a bearing assy and a small flywheel basically. This one is an early 3.0l unit with the dual disc arrangement.

DiDueColpi
Fred Key
West coast - Canada
(511 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
You can't turn a pig into a racehorse, so the question becomes, how fast can this pig go?

authors avatar

Re: Driveline Design

Posted by: DiDueColpi
Date: March 21, 2012 04:15PM

And a couple more

Here's the driveshaft. It's a two piece assy, front and rear are largely identical.
The engine has a light flywheel and ring gear for starting purposes. And connects directly to the driveshaft through the rubber doughnut.

Cheers
Fred

roverman
Art Gertz
Winchester, CA.
(2288 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Driveline Design

Posted by: roverman
Date: March 21, 2012 08:27PM

Thanks Fred, Holy Frijole, that is one long t-axle !! I must wonder what the torque capcity of the double disc set-up is ? This is looking like diminishing returns for my build,( C5 torque tube). I have heard the standard C5 drive shaft is good for "up to" 540 hp. I hope that is correct. Looks like I'll start with a 10.5" single disc, a Centerforce cover, and a steel insert/alum flywheel, to get started. T-axle and related parts arrived-yeah ! Onward, roverman.

roverman
Art Gertz
Winchester, CA.
(2288 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Driveline Design, got spline ?

Posted by: roverman
Date: March 22, 2012 03:36PM

Fred and clan, If that Alpha set-up happens to be 15/16-23 spline, like Boxter S, that would be sweet-indeed. I'm checking now on possibly adapting 944 Turbo or 928 torque tube to Boxter t-axle. C5 tube is approx one foot too short. This is because C5 t-axle is 23.5", mount face to axle centerline. Boxter is 8.25" centerline. Onward, roverman.

DiDueColpi
Fred Key
West coast - Canada
(511 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
You can't turn a pig into a racehorse, so the question becomes, how fast can this pig go?

authors avatar

Re: Driveline Design

Posted by: DiDueColpi
Date: March 22, 2012 04:11PM

Hey Art,

The Alfa pictures are for reference only. Just to give you an idea of how it can be done. There is no way that it would hold up to your anticipated torque level.
As far as that goes, the 10.5" clutch that your planning for will need to be pretty special to hold up.

Cheers
Fred

roverman
Art Gertz
Winchester, CA.
(2288 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Driveline Design, 10.5" clutch ?, update

Posted by: roverman
Date: March 22, 2012 04:29PM

The initial plan is a 10.4" Centerforce cover and dual friction disk. No drag racing, and clutch engagement around 2,500 rpm., based on how the motor dyno's. Boxter S t-axle turns out to be 1"-23 spline, a perfect match for Porsche 944 Turbo," coupler", to be modded to fit (3) drive lugs on Vette C5 driveshaft/torque tube. Thanks, roverman.

Edited 1 time(s). Last edit at 03/30/2012 06:55PM by roverman.

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