Biggvl wrote:hurts your brain at first
Running a two piece shaft, I enquired about having a one piece made up by two different shaft makers and both recommend not to, so not sure...
Brought some scales for the shed yesterday so will weigh one when I get home
yeah thats because 1 piece would vibrate like all hell unless both ends were to use CV joints instead of Uni joints.
having 2 piece with CV in the middle allows the uni joints at both ends to run straight mostly eliminating drive shaft halves from oscillating in speed.
The front always stays straight since the half is fixed, the back half more or less follows the arc created by the diff's control arms, not perfectly, but much much better than it could with 1 piece. So the 2 piece has a much larger operation angle than the 1 piece without vibrating.
I would imagine a carbon fiber one the vibration would do a lot less damage as its so light the inertia wouldn't be much, also running 2 CV joints should stop oscillation.
2 Porsche 930 race prep'd CVs would be the way to go. 108mm diameter they are, pretty beefy and having them prep'd would allow a much wider operation angle without bind.
