Community Forums

ROAquaman · 03-29-2015, 09:27 AM

I purchased the Sumo Springs through Supersteer. The Tiffin chassis group told me they have seen success using this product. This device becomes part of the suspension by fitting between chassis frame rail and top of axle. It replaces the bump stop and unlike bump stop, it is in contact at all times. It design is to take up the gap between frame and axle reducing sway. I haven't tested it yet as RV is in for oil change. I'm optimistic but I am ready to build a trac bar to complete the handling performance upgrades.

I will circle back and give my evaluation of the Sumo Springs for my P32 chassis.

Sent from my iPhone using iRV2 - RV Forum

ROAquaman · 04-14-2015, 01:29 PM

Okay a follow-up on the front steering stabilizer shock and Sumo Springs. I installed the front steering stabilizer shock since I had purchased it last season. I cannot tell any real difference with this device installed, not to say it doesn't assist front end stabilization. I just cannot feel a difference.
As for the Sumo Springs, I wish I would have started making improvements at the rear end first as the sway has all but disappeared. Before Sumo Springs were installed, a small car could pass me and the wind change would push RV rear end to the right and front to the left creating the wagging sensation. Now I can drive in a cross wind with semi trucks passing and little to no effect on the chassis. The improvement is tremendous! Best improvement for the buck spent so far!

Thank you Sumo Springs!!!

George Schweikle · 04-14-2015, 02:53 PM

Just curious, did your chassis come with a rear anti-sway bar?

I'm asking because you mention the Sumo springs having constant contact with the rear axle and resisting sway. It seems that if they do this by adding stiffness to whatever side wants to sway, they also add stiffness when the chassis hits a bump traveling in a straight line and would make the ride stiffer. An anti sway bar has no effect in a straight line, but only comes into effect when the chassis sways. The rear anti sway bar on my Trek is gigantic - probably 2 or more inches in diameter.

Quote:

Originally Posted by ROAquaman

I purchased the Sumo Springs through Supersteer. The Tiffin chassis group told me they have seen success using this product. This device becomes part of the suspension by fitting between chassis frame rail and top of axle. It replaces the bump stop and unlike bump stop, it is in contact at all times. It design is to take up the gap between frame and axle reducing sway. I haven't tested it yet as RV is in for oil change. I'm optimistic but I am ready to build a trac bar to complete the handling performance upgrades.

I will circle back and give my evaluation of the Sumo Springs for my P32 chassis.

Sent from my iPhone using iRV2 - RV Forum

Doggy Daddy · 04-14-2015, 03:11 PM

You can buy Sumo Springs direct and DIY install if you want.
SuperSprings Self-Adjusting Suspension Stabilizers

ROAquaman · 04-14-2015, 06:37 PM

My chassis does have a 1 3/4" OEM sway bar. It didn't seem to help with the wagging.
It appeared the issue was the rear leaf springs gap between axle and frame beam created an area where house could be pushed one side or the other before bump stops would come into action. The Sumo Springs make continuous contact taking up that gap and become an active part of the suspension.
As far as creating a rougher ride, I haven't noticed any difference. In fact, the new replacement springs on the front end are more rough over bumps and pot holes.

Sent from my iPhone using iRV2 - RV Forum