FWIW,
I worked on an off road racing team for a while many moons ago.
When building a car, we would put the suspension in full bump and measure
the distance, and then in full rebound and measure the distance.
Then we would go talk to the drive shaft guy, and he would build us a shaft
that worked.
Your shaft can't bottom out, and it can't come disengaged or you will have
issues.
If I was doing a swap of some sort, I would follow the same procedure to
ensure that my drive shaft was the way Goldylocks preferred, just right.
Rick
On 9/25/07, WSpohn4@aol.com <WSpohn4@aol.com> wrote:
>
> In a message dated 9/25/2007 9:27:02 A.M. Pacific Daylight Time,
> doddk@mossmotors.com writes:
>
> When making a driveshaft, the manufacturer will want the static length,
> with suspension on the ground, then will add some fudge factor to ensure
> the splines will be safely seated at full suspension extension, yet
> there is still a bit of clearance at rest.
>
> ____________________________________
>
> Another caveat, Kelvin.
>
> In some cars, especially if you have been playing around with ride
> height,
> the distance between flanges with the suspension at normal ride height
> will
> NOT be the shortest, i.e. fully compressed length.
>
> I've seen a couple of V-8 cars come to grief over that, with the shaft
> trying to be shorter than it can when the suspension bumped, which tried
> to push
> the diff and trans apart maybe a half inch.
>
> What you really would like to know is the shortest distance between the
> two
> flanges regardless of suspension position.
>
> Bill
> _______________________________________________
> richard.ewald@gmail.com
>
> Edit your replies
>
> Mgs@autox.team.net
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