ladder bar shackle length ???

Post by **hypo** » Wed Jul 21, 2004 10:08 pm

just curious as 2 the length of the shackle in a ladder bar setup ?? wot is the length determined by ???

Post by **Josh_GQ** » Thu Jul 22, 2004 8:59 am

the length of the shackles on your leaf spring usually

Post by **high n mighty** » Fri Jul 23, 2004 12:06 am

How much of a man you are!!!

Post by **hypo** » Fri Jul 23, 2004 6:28 am

Josh_GQ wrote:the length of the shackles on your leaf spring usually

my shackles r 8" long !!!!!!!!

Post by **hypo** » Fri Jul 23, 2004 8:38 pm

BUMP!!!!!!!!

well come on im sure there is more people out there running ladder bars ????

Post by **Gwagensteve** » Fri Jul 23, 2004 9:07 pm

Are you talking about the Sam's offroad type of ladder bar?

I would have thought that the longer the shackle the better (less angle change) depending on available clearance etc.

Post by **Wendle** » Sat Jul 24, 2004 8:21 am

depends on how you want it to behave. the link end of the shackle is your instant centre, changing the length of the shackle will change the height of it obviously, so it is the determining factor on wether you will squat or load up under torque..

Post by **hypo** » Sat Jul 24, 2004 5:11 pm

Wendle wrote:depends on how you want it to behave. the link end of the shackle is your instant centre, changing the length of the shackle will change the height of it obviously, so it is the determining factor on wether you will squat or load up under torque..

ok

so basically the flat the top bar the better ?? and the longer the shackle the better ??

Post by **beebee** » Sat Jul 24, 2004 8:56 pm

Before I start, my opinion is just that an opinion. I don't claim to actually know what I'm talking about just like to make educated guesses.

I think you should have a shackle 1/2 the length of your spring shackles (especially seeing as yours are so long). The pin of the shackle should be level (horizontal) with your front spring eye mounts. The angle of your torque arm should be close to horizontal if you want little anti-squat or steeper if you choose to run a tightish limiting strap.

I used basic principals of link suspension design to formulate this and to my understanding, it should work. However, I think you'll struggle to mount the shackle where I suggested due to driveshaft interference.

Hope it works out.

Post by **hypo** » Sat Jul 24, 2004 9:06 pm

yeah true

i wonder wot effects running the trac bar like this will have ??

Post by **hypo** » Sat Jul 24, 2004 9:26 pm

ok pic wont work 4 sum reason but i wot i mean is run the trac bar from centre of diff 2 one side at other end so i can get the mount lower

Post by **beebee** » Sat Jul 24, 2004 10:21 pm

You could make the diff mount higher but it the closer the centre of it is to the spring perches, the less chance of binding. IMHO

Post by **Wendle** » Mon Jul 26, 2004 7:37 am

if you are chasing low ani-squat numbers, you want the mount as low as you can get, and as close to the front of the truck as you can get.
the link in your picture is gonna be trying to push the truck off the side of the axle under load. might be allright, depends how much faith you have in your springs to hold everything aligned laterally.

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ladder bar shackle length ???

ladder bar shackle length ???

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