Sumo Springs to replace air bags
Hi Guys, I am considering replacing the stock air bags (which bleed down/leak) with Sumo springs on my 2020 Ford 450 chassis Leprechaun Class C. Rumor is the Sumo springs make the rig more ...
Forum Discussion
It depends on what you are trying to accomplish. Are you trying to control sway from crosswinds ?
Is your rig squatting when loaded ,
did you measure your rear ground clearance to notice a difference between unloaded and loaded ?
Are you running at or near your gross weight ?
Have you performed any other suspension mods ? Sumo’s might not be needed if you already upgraded sway-bars to heavy duty.
Tire pressure experimenting and a correct reputable alignment is foremost to control sway.
**Have this info available when you call the Sumo company to make sure you are getting the correct spring combo. They come in 3 ratings identified by color.
GVWR
Scale your rig, front then rear axle. I would want to know my rvs real weight rolling down the road , thats how you use your rv a majority of the time.
There are 3 grades of Sumo’s. Being that the E450 cutaway is a hard riding truck to begin with, you need to use the correct Sumo otherwise it may have the reverse affect.
The company Sumosprings International states the blue spring is rated for a 16,000# vehicle. But some installers suggest the heavier black springs. Before I would order anything , i would want to speak to a qualified tech at Sumosprings.
They might suggest doing the front first or vice-versa, depending on the info you provide to them. They may also suggest the blue spring in front and the black medium spring in the rear.
They have the experience with many rv owners doing this and would hopefully be able to offer you the best combination that fits your gvwr so you don’t end up ‘pounding’ over bumps or having to do this all over again.
Is your rig squatting when loaded ,
did you measure your rear ground clearance to notice a difference between unloaded and loaded ?
Are you running at or near your gross weight ?
Have you performed any other suspension mods ? Sumo’s might not be needed if you already upgraded sway-bars to heavy duty.
Tire pressure experimenting and a correct reputable alignment is foremost to control sway.
**Have this info available when you call the Sumo company to make sure you are getting the correct spring combo. They come in 3 ratings identified by color.
GVWR
Scale your rig, front then rear axle. I would want to know my rvs real weight rolling down the road , thats how you use your rv a majority of the time.
There are 3 grades of Sumo’s. Being that the E450 cutaway is a hard riding truck to begin with, you need to use the correct Sumo otherwise it may have the reverse affect.
The company Sumosprings International states the blue spring is rated for a 16,000# vehicle. But some installers suggest the heavier black springs. Before I would order anything , i would want to speak to a qualified tech at Sumosprings.
They might suggest doing the front first or vice-versa, depending on the info you provide to them. They may also suggest the blue spring in front and the black medium spring in the rear.
They have the experience with many rv owners doing this and would hopefully be able to offer you the best combination that fits your gvwr so you don’t end up ‘pounding’ over bumps or having to do this all over again.
