As I recall, one can run the driveshaft angles (with regular U-joints)
either up or down at either end as long as the angles (or absolute value
of same) are similar. This presumably will make any velocity changes
cancel from one end to the other. At least that's what I thought we did
at Peterbilt back in the 70's. A driveshaft that angled down both front
and rear was referred to as a "broken back" driveline. Not an answer,
but maybe some clues...
Benn
> Elon,
> On the normal u-joint driveshaft, the angle at the rear end and at the
> transmission should be the same for good operation. (upward at the
rear and
> downward at the front) The primary reason for the double cardin
(constant
> velocity) drive shafts was to allow a downward angle at both ends of
the
> shaft which resulted in less or no driveshaft tunnel. I can see no
advantage
> in a race car which usually has no, or very little angle at either
end.
>
> Tom, Redding CA - #216 D/FCC
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