Goodbye leaf springs!!
#12
Middle finger is courtesy of Dave(USABodyguard). Lol
looks awesome, very well thought out.... but I have one question..... how do you adjust pinion angle? I see the heim/bushings up front but no adjustability out back? did you figure that in and just built the bars to set it and leave it alone? Just one curious question other than that, I will be over to pick it up this weekend, thanks for all your hard work I really appreciate it. If you don't mind just have her filled up and washed before I get there :o
There's some adjustability built into it but I think most of it was done in the design. I'll ask about it though and get you a better answer.
After watching Jarrett at the sand drags I was thinking of doing that with my truck! Does that count as rock crawling...probably not huh.
Awesome setup. I wanna do the same thing to my truck. I worried about loosing the abillity to toss my sportbikes and or dirtbikes in the back of my truck, 800-900 pounds. Let me know how it hauls things when you get a chance.
I'm really interested in this setup, I'm building my truck to do road racing courses/autocross and road trip stuff.
I'm really interested in this setup, I'm building my truck to do road racing courses/autocross and road trip stuff.
Thanks!
I think those truck arms are gonna have to get a lot longer for that to happen! I'm curious as to how much if any air my front tires would see at a properly prepped track.
Not sure on the size but Stoiciometric did mention that he overbuilt that particular area. And I'm not sure I'd want to find out how it would drive without a pan hard bar, I would think it would stay centered for a little while until some hard cornering cracked the brackets off the frame or axle because of the side loading.
#14
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To answer a few questions...
The shock tabs are welded to the arms so they can attach to the frame forward of the c notch. I do not believe the frame is stiff enough to allow the suspension to work correctly behind the notch. The other factors for that mounting position are keeping the shock eyes in line for the top and bottom mounts, keeping the shocks mounting point on the axle closest to the outside of the truck without mounting outside the frame rails (tire clearance later), the ability to use a shock short enough to fit under the bed, not scrape the ground and still allow for 8 1/2" of wheel travel.
The pinion angle is adjusted with 4 rod ends that mount the arms to the axle.
The joints on the front of the arms are forged and 1.25-12 thread rated at 238,000 lbs each. Should be strong enough. Rear rod ends are 3/4-16 with spacers reducing to 5/8 bolts.
Other notes on the set up; the instant center is good, the length of the arms combined with the Fox shocks creates an awesome ride, re-valveable shocks (great out of the box with 70/50 damping), ability to tub the bed to the frame rails for tire clearance, lots of wheel travel, plenty of height adjustment, uses any 2.5" coil springs, pushes on the truck under the cab where it is stiffer, canted arms allow articulation for the street without bind.
The shock tabs are welded to the arms so they can attach to the frame forward of the c notch. I do not believe the frame is stiff enough to allow the suspension to work correctly behind the notch. The other factors for that mounting position are keeping the shock eyes in line for the top and bottom mounts, keeping the shocks mounting point on the axle closest to the outside of the truck without mounting outside the frame rails (tire clearance later), the ability to use a shock short enough to fit under the bed, not scrape the ground and still allow for 8 1/2" of wheel travel.
The pinion angle is adjusted with 4 rod ends that mount the arms to the axle.
The joints on the front of the arms are forged and 1.25-12 thread rated at 238,000 lbs each. Should be strong enough. Rear rod ends are 3/4-16 with spacers reducing to 5/8 bolts.
Other notes on the set up; the instant center is good, the length of the arms combined with the Fox shocks creates an awesome ride, re-valveable shocks (great out of the box with 70/50 damping), ability to tub the bed to the frame rails for tire clearance, lots of wheel travel, plenty of height adjustment, uses any 2.5" coil springs, pushes on the truck under the cab where it is stiffer, canted arms allow articulation for the street without bind.
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That's a nice lookin' setup! I like how it's a better, more robust version of a the old 68-72 truck arms. I'm curious to know what the exact anti-squat value came out to be. I can't imagine where to begin when designing a suspension for a truck that serves double duty like the strip and auto x. Is there any brake hop?
Do you have any more pics of the panhard bar to frame mount? I'm trying to figure out how to get a low roll center with a panhard but not have a monster frame mount that hangs too low.
I'd put a rear sway bar on it too before you go and mess around with the rack and pinion (not a steering box is if its 2wd). I bet it'd help you out quite a bit in the slalom.
Do you have any more pics of the panhard bar to frame mount? I'm trying to figure out how to get a low roll center with a panhard but not have a monster frame mount that hangs too low.
I'd put a rear sway bar on it too before you go and mess around with the rack and pinion (not a steering box is if its 2wd). I bet it'd help you out quite a bit in the slalom.
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I am also curious what the anti-squat came out to be. I tried to figure it out but didn't have confidence in the results with so many assumptions of CG and weights.
I didn't do a good job taking pictures. The only thing you might be able to do is angle the panhard forward to increase the length as much as possible and make a diagonal link. That would allow you to mount the frame bracket higher and tolerate more angle change on the link from suspension travel without translating the axle as far. As long as you can clear the driveshaft and have room to increase the diameter of the tubing to handle the extra load.
I agree, the truck already has a 1.5" sway bar in front and would really benefit from a rear bar.
I didn't do a good job taking pictures. The only thing you might be able to do is angle the panhard forward to increase the length as much as possible and make a diagonal link. That would allow you to mount the frame bracket higher and tolerate more angle change on the link from suspension travel without translating the axle as far. As long as you can clear the driveshaft and have room to increase the diameter of the tubing to handle the extra load.
I agree, the truck already has a 1.5" sway bar in front and would really benefit from a rear bar.
#20
Not sure what your asking but I didn't have a shop do it. I have a couple buddies who did it for me for a case of beer...or two! I'm sure if you have a shop do it it can vary depending on how crazy you wanna go with it. But figure between $4K up to maybe $10K. That's just a guess though.
There's some other members who have some real nice ones who had shops do it and they could would probably give you a better idea of how much it would cost.