Can anyone not stuck at work measure the OD of a sierra driveshaft? I'm not sure if there are multiple sizes but these will the larger of the bunch....

James

The larger ones are about 28mm (the type with Lobro joints/disc brakes). The smaller ones are about 24mm (tripode joints, drum brakes). There are also some at 27mm (see below).

A bit of extra info:

The joints are not interchangeable between the above types of shafts as the splines are different. However, there are also shafts (I think from later models and not that common) with tripode joints from drum-braked cars that are about 27mm diameter on which you can replace the inner tripode with a Lobro allowing you to use an LSD on a drum-braked car.

[Edited on 17/3/09 by matt_claydon]

Mine are 27mm [from an H reg 1.8 CVH with drums]

Many thanks, close enough