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Suspension Binding? Answered

I know this photo is different looking, but ignore that and look at the shaft.  It, like all other driven independent suspensions has no spline or sliding shaft to allow for movement in and out.  HOW DOES THIS NOT CRUSH THE SHAFT OR JOINTS.

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rickharris

Best Answer 6 years ago

Spline is in the hub

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frollard

6 years ago

You're right, if the design doesn't cause the wheel to pivot about the inside of the drive shaft, then the shaft MUST have a spline that allows it to shorten/lengthen. The u-joints may allow some movement like that.

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jj.incfrollard

Answer 6 years ago

does that mean that cars with more normal Independent suspensions don't need to shorten/lenghten?

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rickharrisjj.inc

Answer 6 years ago

The illustration you show is a trailing arm so it needs to slide the shaft.

the alternative would be a wish bone suspension like F1 cars have where the center of rotation of the wheel/suspension is the center of the gear box so the shaft can be fixed.

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jj.incrickharris

Answer 6 years ago

So what is the benefit of a trailing arm. It is the suspension I plan on using, just for space and it is a little easier because it only need one arm. I also am going to use a leading arm on the front, also because of the no-butterfly and the turning angle doesn't change as the suspension moves.

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frollardrickharris

Answer 6 years ago

+1.

More commonly it is designed around the suspension moving in an arc around the radius of the drive pivot.

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Burf

6 years ago

It does move. Just to the right of that rubber boot on the right hand side of the picture, there will be either a splined socket or shaft connecting the axle to the differential. The spline allows enough movement in and out to compensate for the distance of the hub as it moves up and down through its arc.
Check out some images of a CV (constant velocity) joint with google and you will get a better understanding.

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Burfjj.inc

Answer 6 years ago

Its there, but it is hidden inside the differential case.