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Re: Rear shock questions
Actually I think I might see the problem. I think the geometry of the links is wrong.
If you look in the one pictures where it up, the wishbone link is pointing up, away from the lower arms, at the front of the wishbone. When it's aired down, the links are paraell.
Since the main arms are solid mounted, when you rotate the frame, the upper link is pivoting but not the lower arms. Basically the upper link is then pushing and pulling the rotation of the axle in relation to the frame, causing it to change height.
I think you need to rethink your setup and actually use proper suspension geometry, based on correct math, center point, rotation, etc., etc.
As for the shock lenght, with your bags that far up on the arms, you will never find a shock that will meet the travel requirements. The closer you put the bags to the front pivot point, the more range in height you get at the axle. Bags need to move back. You typically only need 8-10" of total axle movement and you will find most shocks will fall into this range, until you get into lifted application but that's a whold different ball game.
Hope that helps.
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