Alum. torque tube
05-10-2004, 10:16 PM
#4
Nordschleife Master
Dave951M, aka Dave Miller is a busy guy. I know that there are a few Aluminum Torque tubes he has completed, one being in my car and IIRC two others have been finished, but when dealing with someone who is making them on the side one has to be patient.
My whole car is for sale with AL torque tube in it..... or if I get no offers on the car she may get parted out, so an almost new AL torque tube may be back on the market......
My whole car is for sale with AL torque tube in it..... or if I get no offers on the car she may get parted out, so an almost new AL torque tube may be back on the market......
05-10-2004, 11:03 PM
#5
2nd Gear
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We think the torque tube is shot. shaft slips in the coupler. We've tried two different couplers. A new coupler is on order. Torque tube shaft seems to have a little wear,so we need to buy a low mileage one or upgrade to one of these alum. ones. We also need the car finished before memorial weekend, because of a track event. We could sure use some help with this one. Any one have any idea's. Car slipped with old transaxle, so we put in the 6 speed trans. we had here, but same problem with New low mileage ( 40k )transaxle.
05-11-2004, 07:16 PM
#7
Thefu
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Not frustrated, I'm in a long term conversion project, I just don't want to lose out on an opportunity to lose some weight. (OK, no wise cracks, I'm talking about the car).
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05-11-2004, 08:24 PM
#9
Burning Brakes
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NZ yes less rotating weight/ mass, a bit faster acceleration...especially combined with Lightened knifeedged crank,aluminum flywheel and pressure plate, light kevlar clutch ....now that would speed up your revs..and have your wallet go on a extreme diet..how much is the aluminum torque tube from Dave anyway?
05-11-2004, 10:27 PM
#10
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I think the aluminum torque tube just replaces the outer housing with aluminum and uses a stock steel driveshaft. However you could easily put in an aluminum or lightened steel flywheel while you are in there.
-Joel
-Joel
05-13-2004, 07:01 PM
#12
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Sorry about being offline for a while guys. The Cliff Notes version is that within my circle of family, friends and acquaintances, there have been 4 deaths in the past two weeks. I'm going to another funeral this weekend. This last one was probably the toughest since our family had to make a decision about removing life support. If you don't have a living will, I hope you never had to weigh something like this out. My relative didn't have one and the process wasn't pleasant. Either way, his battle ended less than one day after removing support and most everyone is at peace with the decision.
Back to tubes- the aluminum tube is made from 6061T6 alloy, the same that is used in the aftermarket A arms and the aluminum torsion bar carrier. It can have as many bearings as you want, is totally rebuildable, and uses bearings with the proper C4 clearance. It's also 25# lighter than stock. The tube uses the original driveshaft. The physics for lightening the driveshaft itself don't justify a lighter material for the shaft. In reducing rotating mass, an aluminum flywheel and knife edging and lightening the crank in much more effective. Past that, to increase performance, the next are to examine is the unsprung weight of the car ie wheels, tires, brake rotors. Some of the guys on the list are right proud of the turbo twist look aftermarket wheels but they are quite heavy compared to the originals. Weight of wheels alone can be worth up to .5 sec in the quarter with no other changes in the car. So, like Colin Chapman said, to go faster, add lightness.
Back to tubes- the aluminum tube is made from 6061T6 alloy, the same that is used in the aftermarket A arms and the aluminum torsion bar carrier. It can have as many bearings as you want, is totally rebuildable, and uses bearings with the proper C4 clearance. It's also 25# lighter than stock. The tube uses the original driveshaft. The physics for lightening the driveshaft itself don't justify a lighter material for the shaft. In reducing rotating mass, an aluminum flywheel and knife edging and lightening the crank in much more effective. Past that, to increase performance, the next are to examine is the unsprung weight of the car ie wheels, tires, brake rotors. Some of the guys on the list are right proud of the turbo twist look aftermarket wheels but they are quite heavy compared to the originals. Weight of wheels alone can be worth up to .5 sec in the quarter with no other changes in the car. So, like Colin Chapman said, to go faster, add lightness.
