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  #1  
Old September 14th, 2017, 19:55
x-jay vision x-jay vision is offline
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Sumosprings opinions needed

hey all, I searched and didn't find anything, but I might be retarded. I'm looking on opinions of sumosprings in the rear, looking to reduce sag pulling a small travel trailer. Anyone have them?

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  #2  
Old March 20th, 2018, 20:03
x-jay vision x-jay vision is offline
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Sumosprings opinions needed

So I'm planning on using my XJ to tow a small travel trailer a few times a year so I can get back in the remote spots. I have been making a few changes to make that a more reasonable idea, one of which was adding sumosprings in the back. Really couldn't find much of anything on them, but they are essentially a progressive bumpstop that acts like an airbag under compression. They replace the rear bumpstops, so they don't limit droop. So far I've been very happy with them and the rear suspension rides very smooth over the high speed stuff. Have not towed with them yet. We will see how that goes.

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  #3  
Old March 22nd, 2018, 18:45
The_Punisher The_Punisher is offline
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Re: Sumosprings opinions needed

Sumo springs are either underrated or under utilized. I love them

I use them as bumps stops. They are extremely effective as a "poor man's" air bump.

Metal Cloak sells them for the JK as bump stops (not so much as an air bag replacement). My first experience with them was on my JK and they were fantastic when landing good and hard.

Skip to about 2:00 https://vimeo.com/102785977

https://vimeo.com/110736282

That thing needed the shocks tuned though.
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  #4  
Old March 22nd, 2018, 18:52
x-jay vision x-jay vision is offline
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Sumosprings opinions needed

I agree completely, not much more than extended bumpstops, and way more useful.

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  #5  
Old April 15th, 2018, 18:40
The_Punisher The_Punisher is offline
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Re: Sumosprings opinions needed

Quote:
Originally Posted by x-jay vision View Post
So I'm planning on using my XJ to tow a small travel trailer a few times a year so I can get back in the remote spots. I have been making a few changes to make that a more reasonable idea, one of which was adding sumosprings in the back. Really couldn't find much of anything on them, but they are essentially a progressive bumpstop that acts like an airbag under compression. They replace the rear bumpstops, so they don't limit droop. So far I've been very happy with them and the rear suspension rides very smooth over the high speed stuff. Have not towed with them yet. We will see how that goes.

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What part number did you use and how much lift do you have? They have 3 different lengths for the rear of the XJ.
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  #6  
Old April 15th, 2018, 18:48
x-jay vision x-jay vision is offline
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Re: Sumosprings opinions needed

Quote:
Originally Posted by The_Punisher View Post
What part number did you use and how much lift do you have? They have 3 different lengths for the rear of the XJ.
Well my bump stop pads are extended leaf spring plates, so they are elevated above the axle. I used the standard no lift sumo springs, I have about 4 inches of lift and the sumo springs are about 1 inch from engaging on my leaf spring plates, when sitting at normal ride height.

I did weld a custom support pillar on the bottom of the leaf spring plate to prevent the sumospring from stretching my u-bolts or bending the leaf plate. I can take pics if you want.

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  #7  
Old April 15th, 2018, 19:29
The_Punisher The_Punisher is offline
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Re: Sumosprings opinions needed

I can imagine what you mean.

Thanks for the info. I bought a 2nd XJ for the wife. It's going to be a mild wheeler for our favorite local trails as well as a "chase truck" for my go fast Jeep. She'll carry the OBA and tools. I want it to be capable of carrying a pretty good load offroad so I plan to use the sumo springs. Leafs will be a bastard pack using another set of XJ leafs I have laying around.

On my rig I actually use PN# SSF-401-47 on a custom mount that bolts into the stock location with some bracing. The bump strikes directly over the leafs on the leaf plate. It came out nice. I use the same bumps in the front too.

For the rear PN# SSR-403-40 is 1" longer than the "no-lift" ones you use. 402 is 5.25", 403 is 6.25" and 404 is 7.25" long
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  #8  
Old April 15th, 2018, 19:45
Heavyopp Heavyopp is offline
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Re: Sumosprings opinions needed

Quote:
Originally Posted by x-jay vision View Post
Well my bump stop pads are extended leaf spring plates, so they are elevated above the axle. I used the standard no lift sumo springs, I have about 4 inches of lift and the sumo springs are about 1 inch from engaging on my leaf spring plates, when sitting at normal ride height.

I did weld a custom support pillar on the bottom of the leaf spring plate to prevent the sumospring from stretching my u-bolts or bending the leaf plate. I can take pics if you want.

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I know it's not my thread but I'd like to see what you did -- Thanks
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  #9  
Old April 15th, 2018, 19:52
Heavyopp Heavyopp is offline
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Re: Sumosprings opinions needed

Quote:
Originally Posted by The_Punisher View Post
I can imagine what you mean.


On my rig I actually use PN# SSF-401-47 on a custom mount that bolts into the stock location with some bracing. The bump strikes directly over the leafs on the leaf plate. It came out nice. I use the same bumps in the front too.
Are you talking about the JK in the video or did you use these on a XJ -- I'd like to see pictures of your mounts too if it's not too much trouble

Thanks, Jer
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  #10  
Old April 15th, 2018, 19:52
x-jay vision x-jay vision is offline
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Re: Sumosprings opinions needed

Quote:
Originally Posted by Heavyopp View Post
I know it's not my thread but I'd like to see what you did -- Thanks
Hopefully this pic helps. It's 2x2 tubing notched for the brake line, welded to the bottom of the extended spring plate.

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  #11  
Old April 15th, 2018, 20:09
Heavyopp Heavyopp is offline
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Re: Sumosprings opinions needed

Thanks -- I understand what you did now

Are those the Sumo springs designed for the back of the XJ? They bolt into the stock location on the jeep?
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  #12  
Old April 15th, 2018, 20:12
The_Punisher The_Punisher is offline
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Re: Sumosprings opinions needed

I want to post a pic of mine, how did you post your pic?
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  #13  
Old April 15th, 2018, 20:20
The_Punisher The_Punisher is offline
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Re: Sumosprings opinions needed

[IMG][/IMG]
[IMG][/IMG]
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  #14  
Old April 15th, 2018, 20:21
The_Punisher The_Punisher is offline
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Re: Sumosprings opinions needed

Holy crap that's all I needed to do to still use photobucket!? What the hell
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  #15  
Old April 15th, 2018, 21:02
Heavyopp Heavyopp is offline
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Re: Sumosprings opinions needed

I don't see the pictures -- whats the trick?

Still get the photobucket hostage photo
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