Installing SumoSprings on the front.

[TyCreek]

Originally Posted by hudson0231

Do you have to have a front end alignment done after you install sumo springs on the front springs only? Do they raise the front end any at all?

Depends on if your rig nets some "lift". Measure your fender hight before and after. I got a little better than 1/4" on driver side and nothing on the other side. A measurable lift is what tells you to consider getting an alignment.

[TomAndLindaRogers]

I didn't check before and after heights, but my mechanic checked and the Sumos were compressed ½" once the MH was back on it's tires. That makes sense since our Axis 25-2 has almost 5000 lb on the front axle. With a ½" compression, I assumed the height changed so I did get an alignment and it was needed. I expect the Axis/Vegas model (wheelbase) determines whether the Sumos raise the front end or not.

Note: All measurements and the alignment were performed with the MH fully loaded with the exception of my wife and me.

[jb1911]

I just talked to a tech guy at Super Springs about the rear SumoSprings for my Vegas. He said the correct part # is SSR-106-40-1 ($573.75). He also said they make a bump stop like the front ones. Part # is SSR-130-47 for 1500lbs and SSR-130-54 for 2800lbs ($306.50). I'm going with the bump stop replacement because I can install them myself.

[revjeffrey]

Best modification I've made so far.

[Whirnot]

Originally Posted by jb1911

I just talked to a tech guy at Super Springs about the rear SumoSprings for my Vegas. He said the correct part # is SSR-106-40-1 ($573.75). He also said they make a bump stop like the front ones. Part # is SSR-130-47 for 1500lbs and SSR-130-54 for 2800lbs ($306.50). I'm going with the bump stop replacement because I can install them myself.

Have you used your Vegas since installing the fronts? It will be interesting to hear your take, between no Sumos, fronts only, and front and rear......

[jb1911]

Since installing the fronts the biggest difference that I've noticed is when I turn into our driveway and go over the curb. The coach used to rock back and forth violently. Now it doesn't rock at all over the front wheels, but still does at the rear. I'm thinking the rear Sumos will cure that. Driving is a softer ride and wind pushing on the side is more controllable. With the Safe T Plus driving in the wind is no longer a white knuckle activity. I'm sure that the rear Sumos will be the final piece in the puzzle. We went crazy with Dynamat last month and the noise was cut down considerably. We are nearing highway driving happiness. The Vegas has had it's problems, but we love it even more since we made it "ours". I'll get back to you after the rear install.

Keep the rubber side up.

[vkb]

Ron installed front and rear Sumos this Spring .. having fought the road and wind during our first summer with the Axis.
He appreciates the difference and to date, has not installed any other upgrade.

[Whirnot]

Went a few miles to fill propane today before a trip. First time on the road after installing Sumos on the front.

As soon as I turned a corner and hit a dip I saw a huge difference! The down side is it scoots around like a sports car, there goes my mileage!

[vkb]

Originally Posted by Whirnot

Went a few miles to fill propane today before a trip. First time on the road after installing Sumos on the front.

As soon as I turned a corner and hit a dip I saw a huge difference! The down side is it scoots around like a sports car, there goes my mileage!

Ha! ah... what gas mileage ?!!

[TexAxis]

Looking at installing Sumos on front & rear of our '17 Axis 24.1 (2016 E-450 chassis). Looks like SSF-106-40 for front and SSR-106-47 for the rear - those who have installed them, did you install 106-47-1 or 106-47-2 on the rear?

[revjeffrey]

The best modification I have made so far. You could tell the difference instantly.

[Whirnot]

After a thousand miles with the Sumos is on the front, I can't speak highly enough of them.. What an awesome addition. Really takes the sway out when meeting a semi on a two lane road.

[vkb]

Originally Posted by TexAxis

Looking at installing Sumos on front & rear of our '17 Axis 24.1 (2016 E-450 chassis). Looks like SSF-106-40 for front and SSR-106-47 for the rear - those who have installed them, did you install 106-47-1 or 106-47-2 on the rear?

Ron installed Sumo Springs in April 2017 ...
Front SSF 106-40
Rear SSR 107-554
**there are 3 rear springs .. recommendation from SuperSprings follows:

Hello Ron,
*
Thank you for your question. There is a rear SumoSprings Solo kit, which is designed to replace the factory bump stop, available in three different densities for you vehicle.
*
SSR-107-40: 1,000 pounds capacity at 50% compression
SSR-107-47: 1,500 pounds capacity at 50% compression
SSR-107-54: 2,800 pounds capacity at 50% compression
*
The middle density (47) would be most recommended, unless you are towing or hauling additional weight on a frequent basis. If you are, the heaviest (54) would be best.

I hope this helps .. He immediately could tell the difference and I enjoy driving, as well .. now !

Ron and Kay

[PaulH]

Very interesting hearing all the reports, I bought a set of Timbren SES for the front of mine as Sumo don't have a dealer this side of the pond. They're the same as Sumo, but made of rubber, not hard foam, has anyone fitted them ?

[carlgorski]

Originally Posted by Whirnot

After a thousand miles with the Sumos is on the front, I can't speak highly enough of them.. What an awesome addition. Really takes the sway out when meeting a semi on a two lane road.

Very true. Night and day difference

[Mr Sunshine]

Originally Posted by jb1911

I just talked to a tech guy at Super Springs about the rear SumoSprings for my Vegas. He said the correct part # is SSR-106-40-1 ($573.75). He also said they make a bump stop like the front ones. Part # is SSR-130-47 for 1500lbs and SSR-130-54 for 2800lbs ($306.50). I'm going with the bump stop replacement because I can install them myself.

Wondering if you did the rears, and if so which ones? I installed the front Sumos, but only one short trip wasn't much of a test. Considering the rears or maybe the rear bump stops.

[jb1911]

Originally Posted by Mr Sunshine

Wondering if you did the rears, and if so which ones? I installed the front Sumos, but only one short trip wasn't much of a test. Considering the rears or maybe the rear bump stops.

I installed the 1500# ones. I thought the 2800# would be too stiff. We're happy with the results.

[Mauserdude67]

I have the Sumos mounted front and rear on my 24.1. I also have the Safe-T-Plus stabilizer installed. I just got back from about a 2500 mile round trip from Texas to California and back. While the Sumo springs do make a dramatic difference, I need more body control. I encountered heavy winds from the south on my entire trip out west (20-30mph with gusts to 50+). With properly inflated tires and the Sumos installed, I still drove most of the trip to California with at least a half turn of the steering wheel to the left to compensate for the heavy south wind. When passing or being passed by a semi-truck or encountering cross-winds, the sharp dip and then surge of the wind was very unnerving. I really had to work at keeping my RV in the proper lane.

So, I am now about to add the Hellwig heavy duty front and rear stabilizer bars and a set of Bilstein shocks to both ends. With those components working in concert with the parts already on the Axis, I am hoping to get the handling and body control down to the point of relaxed driving in all but the heaviest of winds and on the roughest of roads.

It's been said before, but that stretch of I-40 from Albuquerque to the other side of Flagstaff is brutal. If I can keep my machine from shaking itself apart and mitigate harsh shocks from the road surface along with body control afforded by the rest of the added hardware, I'll be happy.

[gmtech16450yz]

You'll be loving it after doing the Bilsteins and Helwigs. The stock shocks are horrible compared to the Bilsteins. And the Helwigs keep it amazingly flat on cornering compared to the stock bars. Don't hesitate to spend the money on those two last suspension mods.

BTW make sure that steering stabilizer is centered. Sometimes it's as easy and centering the steering wheel perfectly when parking on flat ground, and then loosening up the clamp on the tie rod so the safe-t-plus can center itself. Tighten it back down and you're good to go. (Sorry if you've already centered it and it was all simply wind. Having a strong side wind does make the steering stabilizers fight your steering input and has a way of making those situations worse actually.)

[Mauserdude67]

Thanks for the encouraging words. I'll probably re-center the Safe-T-Plus once I have it all installed and back on the ground. That'll be easy compared to doing the rest!