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Beam axle suspension


hedley
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I'd just like to pick some brains that are superior to mine.

If you had a rangie chassis and rangie axles, and a blank canvass for suspension, what would you do?

modified stock? (pivoting hockey sticks etc..)

3 link both ends?

4 link? (i confess i dont know much about this one)

The vehicle will be used purely for challenge/trial events so i'm looking to get the maximum articulation out of it. I know that the engine causes trouble with some set-ups (3 link), but im already moving it backwards for other reasons.

Although it will be road legal, it doesnt have to pass any form of testing...! (MOT/SVA etc) I have reasonable engineering skills and am not afraid to put them to the test.

Im not looking to steal anyone's ideas, i just dont know where to start...

thanks

Hedley

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I'd just like to pick some brains that are superior to mine.

If you had a rangie chassis and rangie axles, and a blank canvass for suspension, what would you do?

modified stock? (pivoting hockey sticks etc..)

3 link both ends?

4 link? (i confess i dont know much about this one)

The vehicle will be used purely for challenge/trial events so i'm looking to get the maximum articulation out of it. I know that the engine causes trouble with some set-ups (3 link), but im already moving it backwards for other reasons.

Although it will be road legal, it doesnt have to pass any form of testing...! (MOT/SVA etc) I have reasonable engineering skills and am not afraid to put them to the test.

Im not looking to steal anyone's ideas, i just dont know where to start...

thanks

Hedley

I'm not in possession of a superior brain......However you could have a read through this

http://www.4wheeloffroad.com/techarticles/...pension_part_1/

I have grand ideas about basing a system around the standard A-frame and arranging all the lengths, angles etc. around that, using the above link.

Its a start.

Andy

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Radius arms will never give you maximum articulation.

Done properly, either 3 link (2 lowers a 1 upper) or triangulated 4 link for rear. These can give more articulation than the rover A-frame, because of the limited angle of the ball joint.

The engine usually gets in the way of triangulated 4 link for the front. 3 link (2 lowers a 1 upper) can often be arranged if you offset the upper link.

Another good option for the front is radius arms and an X-link between the front of the radius arms.

I'm not familiar with your challenge/trial events, but IMHO, with articulation it is best to have balanced articulation (between front and rear) than more articulation at one end and compromising balance.

In Aus we have found that the greater stability from retaining both the top and bottom of the springs and balanced articulation is far, far superior off road to large articulation with dislocated springs.

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