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yes, a carbon fibre TT drive shaft was also a consideration, but you need much more time and effort for a proper bearing solution. The carbon fibre shaft is probably a bit thicker.
If there is an easy pnp carbon solution available let me know.
Originally Posted by boost feen
Looks good what size Alloy tube did you. End up buying for the transition piece and dull length tube?
Aluminium Round Tube 3.1/2" x 1/4" and 4" x 1/4". The OEM bearings are a tight fit, but they fit.
I investigated building a CF torque tube years ago. It was doable, but I guess other things got in the way. CF tubing is not terribly expensive and is available from a number of sources with a suitable I.D. Here's one (of many): https://www.qa1.net/oem-industrial/carbon-fiber-tubing
Since I was using a G31 type gearbox, both square end plates were easy, Even using end plates/housings like above should not be a big problem. There is epoxy and mechanical means to attach. See how CF driveshafts are constructed. They have steel ends to accommodate the U-joints and joining the CF tube to the steel ends is not a failure point. They accommodate big HP too.
I considered a CF drive shaft, but decided it was too rigid for the application. The shaft needs to flex a bit, same as axles.
would aluminum be a poor choice for the driveshaft as well? an identically-sized 6061 rod machined for splines and the pilot nose would weigh around a third what the steel one does.
11-16-2022, 10:21 AM
