GT40s.com - View Single Post - drivetrain/clutch shutter! tranny mounts?

Casey · 01-05-08, 03:00 PM

Yes, tecnique helps slightly. However, it is impossible to just take off when you are backing in confined are as, etc. I don't mind the clutch shutter so much. My brother had a dune buggy that had a similar clutch and it was the same characteristics.

However! The clutch is NOT the big issue. The clutch shutter hits the resonance frequency of the drivetrain unit. Therefor you get a degrading oscillation and the whole damn engine and transaxle rocks back and forth in a stupid manner.

I am talking about changing the frequency of the drivetrain, by changing the modulous of the mounts. If you change the frequency, the clutch may not hit that frequency as to put the drivetrain into resonant shutter.

As I am "blessed" with the weaker Audi box. I am under the understanding that I must run this type of clutch to hold my 480 hp. If I were to run a more typical clutch it may not be able to hold that kind of power as its diameter was intended for an Audi not a tough V8.

I see no sense in replacing the clutch with the same thing. If there was another clutch that would hold the power that wouldn't shutter I'd be game.

No, I do not have the "means" to change gearboxes at the moment to solve my clutch issue either.

Does anyone see a reason why I souldn't solidly mount my transaxle?

01-05-08, 03:00 PM	#14 (permalink)
Casey chaparralman Rookie Join Date: Jan 2008 Location: Ohio GT40: CAV MK1 Posts: 65 Rep Power: 1	Re: drivetrain/clutch shutter! tranny mounts? Yes, tecnique helps slightly. However, it is impossible to just take off when you are backing in confined are as, etc. I don't mind the clutch shutter so much. My brother had a dune buggy that had a similar clutch and it was the same characteristics. However! The clutch is NOT the big issue. The clutch shutter hits the resonance frequency of the drivetrain unit. Therefor you get a degrading oscillation and the whole damn engine and transaxle rocks back and forth in a stupid manner. I am talking about changing the frequency of the drivetrain, by changing the modulous of the mounts. If you change the frequency, the clutch may not hit that frequency as to put the drivetrain into resonant shutter. As I am "blessed" with the weaker Audi box. I am under the understanding that I must run this type of clutch to hold my 480 hp. If I were to run a more typical clutch it may not be able to hold that kind of power as its diameter was intended for an Audi not a tough V8. I see no sense in replacing the clutch with the same thing. If there was another clutch that would hold the power that wouldn't shutter I'd be game. No, I do not have the "means" to change gearboxes at the moment to solve my clutch issue either. Does anyone see a reason why I souldn't solidly mount my transaxle?