Disabling springs on our bus?

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Gano
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Disabling springs on our bus?

Postby Gano » Fri Aug 02, 2013 8:19 am

We're bringing our Tree House MV built on a 30' bus.

I read somewhere that other cars had disabled their springs on the playa to firm up the suspension and minimize sway.
I tried this yesterday by jacking up the bus and putting some wood blocks between the frame and the axle to disable the leaf springs. It seemed to work ok. Is this the idea?

On the rear end there are little rubber feet to cushion the frame when it bottoms out. I put the blocks under these feet...but maybe I should remove the rubber feet completely on playa? Any ideas?

Thanks!
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ygmir
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Re: Disabling springs on our bus?

Postby ygmir » Fri Aug 02, 2013 8:36 am

that can work. single pieces of wood, though, can split. you might be better to use stacked plywood or several laminated boards, with differing grains. You'll want to bolt or secure them somehow.
also: realize it will change stresses on the rest of the suspension and rear end, making shocks "direct". Bent and broken stuff can happen that way. without the shock absorption, things change.
But, it does help with sway........so, know you're changing things, possibly making some parts vulnerable and watch your loading and driving.
That's about all I can come up with.
oh, and yeah, I'd not put them under the rubber things.......either elsewhere or remove the rubber.
just my opinions, I'm no engineer.
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Re: Disabling springs on our bus?

Postby MikeGyver » Fri Aug 02, 2013 8:48 am

Let's start with a disclaimer. Modifying suspension in any way can be dangerous and I take no responsibility if something goes wrong.

Now to the point. That should work if two things are made sure of. The blocks will not slip and fall off the axle and the floor will support the weight of the vehicle and 30 something people.
If the block slips the bus will lean and people will hurt themselves, if the block goes through the floor the bus will lean further and people will hurt themselves.

Putting it on the bump stop is a good support point. Where do you have the front lifting from? Remember there will probably be around 3-4 thousand pounds of people on it. That's a lot of weight on a small area.
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Re: Disabling springs on our bus?

Postby Captain Goddammit » Fri Aug 02, 2013 11:01 am

I'd be more inclined to use steel.
If you're not a welder/fabricator, a welding shop can probably make up some super stout blocks for you pretty cheap. You don't need much material and it'd be an easy job. They could even drill the holes for you so you can use big U-bolts to clamp them in place.

Wood would be the cheapest and easiest but I agree, wood can split under that kind of stress. I'm a crane truck operator and I use some thick wood blocks under my outriggers. I frequently obliterate it.
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Re: Disabling springs on our bus?

Postby EspressoDude » Sat Aug 10, 2013 8:11 pm

whatever you do, do not remove the bump stops or block the axle for highway use. The bump stops limit suspension travel and lean. At highway speeds excessive suspension travel can lead to rollover, or bend or exploded shocks, which can also lead to rollover. Having the suspension blocked on uneven surfaces can bend the frame, tear body mounts loose, and cause unintended loads on the front suspension leading to loss of steering ability. probably ok on playa at 5mph, but make sure it is back to stock for exodus and highway travel
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Re: Disabling springs on our bus?

Postby ranger magnum » Sat Aug 10, 2013 8:16 pm

Do not put them under the bump stops. Use steel. Only do this on the playa.
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Re: Disabling springs on our bus?

Postby ygmir » Sat Aug 10, 2013 9:56 pm

I dunno that I think steel is best, for this short term.
a good, wooden block, would cushion, just a little, the stresses on running gear from load and such.
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Re: Disabling springs on our bus?

Postby Bounce530 » Sat Aug 10, 2013 11:23 pm

blah....foogies...bump stops, springs and such are over rated;
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