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<DIV><FONT face=Calibri>A straight line drawn through the transmission output
shaft should be close to parallel to a line through the diff pinion shaft.
It is OK if the driveshaft is not parallel to these lines. So if the rear
of the trans is tilted down 6.5 degrees then lets say the driveshaft is level,
the front U-joint operating at a 6.5 deg angle will cause the driveshaft to
speed up and slow down as it rotates. If the nose of the diff is tilted up
at the same 6.5 deg, these velocity oscillations will be cancelled out by the
rear U-joint and the diff pinion will rotate smoothly.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>When you say the diff is tilted downward at 5.5 degrees
do you mean that the nose is pointed down? This would be a bad situation
as the oscillations of the driveshaft would be exaggerated rather than cancelled
by the rear U-joint and you would have nasty vibration. Hopefully your
diff nose is pointed upward 5.5 deg. This would place the imaginary lines
within 1 degree of parallel and close enough for smooth operation.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>Richard Good</FONT></DIV>
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<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A
title="mailto:damys@charter.net
CTRL + Click to follow link"
href="mailto:damys@charter.net">damys@charter.net</A> </DIV>
<DIV><B>Sent:</B> Thursday, March 03, 2016 8:44 PM</DIV>
<DIV><B>To:</B> <A title=fot@autox.team.net
href="mailto:'fot@autox.team.net'">'fot@autox.team.net'</A> </DIV>
<DIV><B>Subject:</B> [Fot] Driveshaft angles on 1970 GT6</DIV></DIV></DIV>
<DIV><BR></DIV>
<P>Need a bit of advice regarding driveshaft angles. The rear transmission
flange is tilted downward 6 1/2 degrees. The diff is tilted downward at 5
1/2 degrees. The difference is 12 degrees. Is this too much for a
universal joint setup to manage? We've considered raising the front of the
diff, but then the spring will be twisted and we don't know how this will affect
the rear suspension. Any help is appreciated.</P>
<P><BR></P>
<P>Dave and Alex</P>
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