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TR6 Connecting the driveshaft (propshaft) question.

To: Bud_Rolofson@nps.gov
Subject: TR6 Connecting the driveshaft (propshaft) question.
From: "Robert M. Lang" <LANG@ISIS.mit.edu>
Date: Tue, 08 Dec 1998 13:31:42 -0500
Cc: triumphs@Autox.Team.Net
Hi Again,

Regarding the drive-shaft orientation...

Two things:

1. the driveline is dynamically balanced at the factory (I think). So, if
you had a car from which the drive shaft had never been disconnected, then
you _should_ try to maintain the orientation of everything if you pull the
drive shaft to replace the U-joints or whatever. This is not what you are
doing, so there's no reason to worry about this. You should make sure that
the driveshaft is balanced before you bolt everything up, because it is
more or less a Royal Pain to remove the driveshaft after the whole car is
assembled. Don't ask about helping a buddy fix a driveshaft at VTR '96 (Hi
again Steve!). 

2. The drive shaft on TR6 as well as the rear axles have holes that line up
such that you can only install the shafts in only two different
orientations. So, if you get your car buttoned up and then test drive it
and see that there is a minor vibration, then you should disconnect one
end, rotate the shaft by 180 degrees and reinstall - if the vibration
dissappears - great. If not, pull that puppy and check the balance. 

Note: a good driveshaft shop will also check the "phasing" as this can
cause some wierdness. If they tell you the phasing is wrong - get another
shaft.

That is all.
rml
TR6's

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