The once-per-revolution resistance you are feeling is presumably the OD's oil
pump.
This is normal, up to a point. It would be odd to have an especially strong
resistance,
or no resistance at all. It may depend on if there is any oil in the OD, or if
some part
of the oil passages is clogged. The middle one of those big plugs on the
bottom of the OD gives
access to the pump and one of its check valves. If you remove the plug and the
ball valve,
and you still have a lot of resistance, then the pump (or something else) might
be messed up.
If you would rather not tear into the tranny+OD, you can mount them to
the engine and test them in the garage without hooking up the driveshaft.
Doug Braun
'72 Spit
At 08:10 PM 4/14/2004 -0500, you wrote:
>I received my strap type driveshaft today. The front flange was missing and
>the rear flange was beat up. Removing u-joints is usually a disaster for
>beginners. It looks as if it will work anyway.
>
>The 3-rail trans with j-type overdrive, that will hook up to this driveshaft,
>has resistance when turning the output flange. The resistance is at the end of
>one revolution, in either direction.
>
>The single rail trans with j-type overdrive has no resistance, when turning
>the output flange, in either direction.
>
>The spare j-type OD unit I have has no resistance, when turning the output
>flange, in either direction.
>
>Can anyone give me a heads up before I take things apart and make
>comparisons.
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