Tailshaft – 1 or 2 piece?

[BigMuz]

I miss almost everything about momus..

[gxxr]

i have had three of the fucking things let go on my dyno, always around 7000rpm and it scares the absolute shit out of you. and then makes a mess of the exhaust, dyno, floorpan. always been 1 piece shafts. last one broke into three pieces and launched the "middle" bit across the workshop

Bit late! Assume that was a mazda box with a front slip joint rather than a uni, but interesting demo of phasing here a couple of minutes in -

Momus has even slipped off the Ipra radar it seems unless he's in the "secret handshake" area!

[psi999]

So i ended up with a single 3.5" heavy duty aluminum driveshaft i had made in Texas and air freighted here.



Couple of thousand KM's under its belt now, no vibrations, no issues - works brilliantly.

From memory weight was around 1/3 of the steel 2-piece.

[Nick]

So i ended up with a single 3.5" heavy duty aluminum driveshaft i had made in Texas and air freighted here.



Couple of thousand KM's under its belt now, no vibrations, no issues - works brilliantly.

From memory weight was around 1/3 of the steel 2-piece.

What was the cost bloke?

I'm looking at something similar but from the Driveshaft shop.

Bit confused why you didn't go local?

[psi999]

Slip yoke wasn't available in Australia so just had the whole lot made over there and sent.

I think it was around $650 landed from the US - 4 days from ordering from memory. Shitloads cheaper than having one made locally was a nice plus.

[Shifty]

Interested to know correlation between weight/size/material and strength/rpm suitability (race guys, dale, etc?)

eg. how would one similar to the OE steel 2pc compare to the aftermarket aluminium one?

As an aside, I've always had 1pc tailshafts & never had a problem with balance... I don't know where that rumour came from about them being hard to balance as from the half-dozen I've been involved with in various cars there's never been a single issue.

[Mc Juicy Hairy Balls]

Hey great looking shaft. Whats the length if you dont mind me asking?
Was told singles are good up to 1400mm long then you go twin. Could be wrong because dodgey memory.

[awdmoke]

Some Chev Suburbans have a 2050mm tailshaft, but they hardly rev.
Reportedly the Coon wagon had the longest one pirece in a passenger vehicle.

[Streety]

Some Chev Suburbans have a 2050mm tailshaft, but they hardly rev.
Reportedly the Coon wagon had the longest one pirece in a passenger vehicle.

Tail shaft speed has nothing to do with engine revs!
The faster the car goes, the faster the tailshaft goes

[MRMOPARMAN]

Also depends on diff/gearbox ratios.

Coons were speed limited to 180kmh because the tailshafts pretzeled above that.