This is intended for the racing groups and not the frame draggers. Most 4link setup have longer bars 2-4 feet, with max angle around 25 degrees. I understand that this is to keep axle movement to a minimum outside of up and down. My thought is to have very short arms ... say 9-12 inches at around 45 degrees static. Reason for this thought is to have the axle twist from front to back on the sides. In effect when the truck leans outward the rear axle moves a little bit and rotates the truck with it some, possible this might destabilize some? the only other concern I have might be driveshaft alignment one u joint being not aligned with the other.
i think thats how the car down at pevely run their rear setup. those late models have crazy wheel movement
running the short bars will cause roll steer (i believe from your post is what you want) which isn't really unstable, you'll just need to get used to it. i want to say it will cause oversteer, but every car/truck out there has a different amount of roll steer, and people get used to it just by driving the vehicle. i imagining that you will be running coil overs, and since you probably won't see much travel, it will probably be fine running the short bars.
as long as the suspension is stiff, and youve got little body roll, it should result in a tight handling setup. as for something with lots of rollsteer...drive a ford crown vic police car. those things get crazy roll steer if you take them hard through an inward banked curve. such as the big sweeping loop style onramps. i owned one, and it got interesting at times. anyways, if your setup is designed well, and the geometry is solid, it should be fine. what type of driving will the setup be used for?
You guys are right, it will end up with roll steer, but with a forward link setup, it will be oversteer. This can result in a highly unstable vehicle. Any amount of input will be amplified and to a point, be unrecoverable. Generally not desirable at all. Just out of curiosity, why do you want this condition? Also, with the links set at a steeper angle it will be difficult to get a good ride out of the setup. At 45 degrees, almost half of any shock load to the axle center will be transferred directly to the frame though the links. This is why links are usually parallel to the ground. But on a paved track it might not be a big deal.
Drifting was the thought behind it all. Intended for the back to be a bit "looser". 45deg was a random number while I was still working numbers in my head and running it past you guys.
you should research similar wheel base sized vehicles with 4 link suspension..... that way you can see what setup would best suit the truck better. not sure on the wheelbase for our trucks but if you take it and look closely at say a corolla or fox body mustang and see how their 4 link geometry works and wht type of setup they run, you may get a better idea of what to look into placing one on yours...... just a thought.
Unless I find a job soon this is going to be a long way off...so yeah more research, and I've done some regarding setup and numbers.. I was mostly concerned regarding the exact axle movement from front to back at each of the sides.
