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Old 03-09-2011, 02:25 PM   #1
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Sumo Springs

After reading about them I believed they might help in side to side sway I have experienced with my coach since it was new. The wide oscillating side sway that occurs coming off of a driveway ramp or curb like drop on one side has always been bothersome. Adding Bilstein shocks and a rear sway bar and later Koni FSDs helped the ride significantly but did too little to dampening the side to side sway mentioned above. I thought the Sumo solid airbag like construction made with material offering a non linear compression effect could help. Recently I added Sumo Springs to my chassis, front and rear.

After about a 1000 miles of travel on familiar roads I can report that I see no improvement in the sway effect described above.

However, I have noticed a difference in the ride over all. There seems to be a more muffled road noise within the coach due to road seams and such. My perception is that the ride is somewhat more firm. And I feel like the coach is riding more level.

Also having traveled thru some of the worst wind conditions a few days ago in southern Ca. I can't remember the coach handling and tracking in the wind this well before now. I would have to say that some improvement in the ride has occurred due to the Sumo Springs.

With more miles accumulated, I will follow up later this summer.

Marty
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Old 03-09-2011, 05:28 PM   #2
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Thanks Marty
I have been waiting for someone to try these. I'm thinking of just putting them on the front.
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Old 03-09-2011, 07:18 PM   #3
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Marty, have you considered a Davis-Tru-Track to tie the front end together?

http://www.roadmasterinc.com/product...c/trutrac.html

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Old 03-09-2011, 07:32 PM   #4
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Quote:
Originally Posted by M&EM View Post
After about a 1000 miles of travel on familiar roads I can report that I see no improvement in the sway effect described above.
Marty, I was expecting that evaluation. Thanks for confirming.
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Old 03-09-2011, 08:11 PM   #5
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Marty, if you come up with a cure for that side to side sway on leaving drive ways, gas stations etc., let me know will you. A cure would sure make me a hero with the DW. She gets pretty ticked when the upper cupboards get re-arranged quite frequently because of this sway.

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Old 03-09-2011, 08:14 PM   #6
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I have put the Sumo Air like front springs on by W22 and found much improved side to side sway. I run the stock Shocks. I think a great improvement for the price, I installed them myself took about 1 hour.
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Old 03-09-2011, 08:23 PM   #7
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Sumo Springs

I also recently installed a set of Sumo Springs on my W24 chassis. The motorhome seemed to corner a little better and bumps were not felt as harshly. It did feel like the rear end needed some more support now as it felt loose compared to the front end. Guess the rear Sumo Springs will be next.
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Old 03-09-2011, 08:30 PM   #8
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It did feel like the rear end needed some more support now as it felt loose compared to the front end.
Crank in a couple more rounds of wedge on that thing and tighten er' up!
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Old 03-09-2011, 08:38 PM   #9
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That's what the Sumo does.
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Old 03-09-2011, 08:44 PM   #10
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Quote:
Originally Posted by dieselclacker View Post
Marty, if you come up with a cure for that side to side sway on leaving drive ways, gas stations etc., let me know will you. A cure would sure make me a hero with the DW. She gets pretty ticked when the upper cupboards get re-arranged quite frequently because of this sway.
Dieselclacker,

Available for the front and rear of most motorhome chassis, these anti-sway bars are made from high quality steel and are much heavier duty than factory anti-sway bars. They control the rocking and rolling of the coach over bumps and unlevel road conditions. If your coach leans, sways or rocks in a side to side motion this product will make your driving experience much more comfortable!

This Roadmaster Anti Sway System provided by Brazels RV Performance will keep the dishes in the cupboard and the DW smilin'!
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Old 03-09-2011, 10:05 PM   #11
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Quote:
Originally Posted by Fred and Bonnie View Post
Marty, have you considered a Davis-Tru-Track to tie the front end together?

Roadmaster Inc. - Tow Bars, Braking Systems & RV Accessories

fred
Fred, see my signature, just re edited it.

Marty
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Old 03-09-2011, 10:12 PM   #12
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Marty, have you considered a Davis-Tru-Track to tie the front end together?
Fred, I have 2 track bars and an ST+ and these devices do not mitigate sway.
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Old 03-09-2011, 10:20 PM   #13
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It did feel like the rear end needed some more support now as it felt loose compared to the front end. Guess the rear Sumo Springs will be next.
That's it Dave. I was trying to think of the descriptive to use. The coach feels like it IS more TIGHTLY tracking since adding the rear Sumo springs. I noticed this a few days ago driving in the terrible wind conditions in S. Cal.

I added the front Sumos my self. Took less then an hour.

I was unable to loosen rear wheels myself so I had the rear Sumos added during the brake recall at Redlands RTS.

Marty
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Old 03-13-2011, 10:26 AM   #14
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I had the same issues and finally bought RoadKing Shocks, had to refinance the house but boy o boy I wish I had done it before. It would have saved me money from buying other aftermarket add ons to keep the coach from swinging and swaying plus much better ride.
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