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Is your traction issue wheel hop or a lack of weight over the rear tires? For the former, I suggest a torque arm. For the latter, there's a water bag intended for traction in snow.
I've stripped out torque arms that were set up poorly and replaced them with good old fashioned traction bars. Once you get your pinion lead angle set it is a simple matter to fabricate the traction bars exactly where you need them with zero binding for the leafs.
Proper slack positioning is vital for any traction device.
Sorry I haven't got back. The wife thinks I don't have anything to do! I don't have any wheel hop and I dont think the springs wrap up. I have air bags which ad clamps to the springs and another clamp front and back.
Looks like I'll take the air bags off and go back to the "SureTrac" bars. Don't know if they are still made but similar to Caltrac. You have to make your own front mount.
Yes I['m running BFG's. Time for new ones. Might switch to Nitto's. Any advice there?
Also, I need to go to shorter shocks since I'm lowered. Any experience with air shocks such as the old HiJackers? It's a shock and air bag in one. That would make up for losing my air bags but I don't know if it'll compensate for the shorter length mounting distance.
i built these for my old bronco wheeler. did wonders for the handling, improved sway, way better traction, before i could not put any power down going through sandy whoop-de-doos at speed. afterwards, i was keeping up with 4-linked vehicles pretty easily.
i don't have very good pictures, but the rear cycled ~15" of travel and there was no binding. it jumped pretty good with that setup too, much more controlled upon landing.
think of it less and less as a leaf spring setup, and more like a parallel 4-link but with a slightly variable upper link. when i did full droop to full compression tests, the spring eye moved no more than about 1/2" through 15" of travel.