Tow Rig for my crawler

[KryptoniteKummins]

Hey Gang! New to the forum, actually this is my first post lol. I'm building a proline mega cab body into a strictly tow rig for my soon to buy wraith and exo terra. I'll have a 2 place 5th wheel trailer that i'll be building as well to pull both rigs at once. I know i wont be able to run both at once but just in case i feel like going from one to the other lol. The problem i'm having is not being able to find substantial shocks for the tow rig. With the amount of weight from the goose neck, the full trailer weight with both rigs on it, the rear end will sag hard core. I would go with springs but i want to run 4-link just incase the tow rig needs to get into the thick of it and rescue one or the other. Any suggestions? This is pretty much what's holding me up on the build lol so all suggestions will be taken into consideration. Already looked at some piggy backs from gmade on ebay that are fully adjustable, so anything else?

 

[benoj]

Why not just put some stiff springs on the coil-overs in the rear


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[lonleycreeper]

Metal highlift springs in the rear just like a 1:1 tow rig, coil overs in the front for some flex.

 

[KryptoniteKummins]

Why not just put some stiff springs on the coil-overs in the rear


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If i could find a set that has springs that are stiff enough, i haven't found anything that will stand up to the weight

 

[KryptoniteKummins]

Metal highlift springs in the rear just like a 1:1 tow rig, coil overs in the front for some flex.

Where would be the best place to find these springs? And will they hold up on the weight end?

 

[heinie_21]

with the weight your talking from a 5th and 2 RCs there are no SPRUNG setups that will hold the weight and still flex well under its own weight without the trailer. Trusts me.

2 options I came up with for my tow rigs were:

A. Full droop setup on the rear. This makes it able to support trailer weight because the shocks are fully bottomed out at normal resting tide height. Then the axle can flex downward as the shocks extend under articulation. Put heavy shock oil in the shock so the suspension dropout movement will be slowed a bit.


B: I o.ce made little sleeves that could clip onto my rear shock shafts of the tow rigs. Kinda like bump stops bit they were like 2x as long as scx10 bumpstops so the shovks couldn't compress fully like the trailer wanted to make them do. Then unclip (remove) the bumpstops when your tow rig needs to do some trailerless flexing.

All in all option A worked better for me and from your description of intended use, and sounds like A would work better for you.

Good luck! POST PICS

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[heinie_21]

B: I once*

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[lonleycreeper]

Where would be the best place to find these springs? And will they hold up on the weight end?

They are very stiff with a full pack, probably carry 10+ lbs by them selfs (best estimate). not sure where you would find them

 

[KryptoniteKummins]

They are very stiff with a full pack, probably carry 10+ lbs by them selfs (best estimate). not sure where you would find them

Like these?


Heavy Duty Lift Springs for Bruiser, Jugg (4x)

 

[lonleycreeper]

Those would probably do it.

 

[KryptoniteKummins]

I emailed them to see what they think as well

 

[KryptoniteKummins]

can anyone else possibly suggest some ideas or people to talk to about my heavy weight suspension issue?

Post thought: Could i just attach the trailer to the axle housing and not worry about the truck suspension? Obviously i'd have to beef up links from axle to the truck but that could work right?

 

[elnott]

cheat the trailer axles forward

 

[KryptoniteKummins]

i could do that too, but with the trailer being as long as it is, i think i would have to center the axles to make a noticeable difference and that'll look weird lol

 

[elnott]

not true you are still going to want some squat on your tow rig to make it look realistic the axles wont need to be centered just cheat them forward and keep the heavier rig on the rear of the trailer. google images of trailers some have the axles very close to center and some are farther back. heres another thing to consider if this were a 1:1 would you build something to look like everyone elses or would you build it to fit your needs

 

[KryptoniteKummins]

of course fit my needs, but at the same time i want the truck to be level or as close to level as possible while towing. I was thinking if i did dual shocks on the back and instead of putting both vertical and parallel to each other, what if i had them at 30 degrees opposite each other from the vertical center point? so like a carrot shape? They would still have some suspension hold in them but should support more weight right?

 

[Lukescb7]

i also say you should just go with a droop setup so the shocks won't compress with the weight of the trailer.

 

[KryptoniteKummins]

How do i go about a full droop setup? just take the coils out?

 

[radster87]

How do i go about a full droop setup? just take the coils out?

Yes. Basically, and put a heavier shock oil in your shocks to slow down the drop rate when flexing. Its what i'm doing with my tow rig, my crawler weighs in at just over 10lbs. plus the 4lbs trailer was squatting sprung suspension i tried that wasn't just uselessly stiff

 

[KryptoniteKummins]

gotcha! I found some dual spring shocks that come with the option for a single spring setup as well. The single spring is a tight coil but full length so i'll try the dual spring setup but put in the single, tight spring for the bottom spring and see how it holds. If it's not good than i'll figure out the droop setup. But as always keep the options coming, just in case i'm not happy either way haha