3 wheeling w/air solutions

1976 Biodeezie Benz

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3 wheeling w/air solutions

Postby Dreamstate » Sun Feb 01, 2009 7:46 pm

One thing that air ride (with bags) does not do well is 3 wheel. You gotta tilt the car way over to a corner, and if your suspension has enough travel up front, the rear wheel will just give a little daylight underneath it. Why is that? It's because that rear wheel just dangles there at full extension. There's the problem.

examples:
1 (language warning)
2 awesome!

The wheel and suspension components are heavy. Even with no air in the system, they will fall to an extended position.
I ran across a post in the layitlow forums about "air lockups". It's a $700 kit, for cars with air cylinders, just to be able to lift a wheel.

Cylinders is a totally different story

Basically with a kit like that, you can run vacuum to pull the wheel up into the wheel well. Now why can't I assemble a kit of my own, for a similar effect? I think with a small vacuum pump and a 1/2 gallon tank, I could empty an air bag and easily keep it collapsed when the rest of the system is charged and raised. I think this is doable.

a) vacuum pump
b) vacuum tank
c) valve(s) to bags

*brainstorm* This just got a lot cheaper. Why the heck do I need to buy a vacuum pump when there's an 80hp vacuum pump under the hood that pulls 15-18inHg? Just store it in the 1/2 gallon tank with a check valve.

a) vacuum tank (stock sphere array vacuum canister from parts benz?)
b) valve(s) to bags

In any event, I will be testing this come spring. Right now I can't see any issues with this idea, but I'd like your comments.
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Re: 3 wheeling w/air solutions

Postby wide_load » Sun Feb 01, 2009 7:56 pm

You so crazy....
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Re: 3 wheeling w/air solutions

Postby Maraschino Larry » Sun Feb 01, 2009 8:36 pm

You could use a spring to keep the front from falling and I don't think it would have to much of a negative effect on the regular suspension function as long as you get one just strong enough to keep that corner up. IDK if the weight of that panzer engine would allow for a front wheel life without some crazy rear extension though.
For a rear beam/axle you'll need something like you're talking about for sure... I've thought about this many times. Interesting idea using factory parts... how much pressure does your factory system generate?

That S10 is crazy. And yes, it's true that you're not allowed to roll 100 spokes without being able to throw it on three.
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Re: 3 wheeling w/air solutions

Postby Dreamstate » Sun Feb 01, 2009 10:10 pm

I was thinking about a spring, it would have to be pretty strong.
Engines normally idle at 18 to 22 inches of vacuum. And that would be plenty good. Absolute vacuum is like 29 inches i think. Yeah, I think even 15 inches would be enough to hold a corner up.
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Re: 3 wheeling w/air solutions

Postby Mandeep D » Sun Feb 01, 2009 10:28 pm

Easy Peasy - I'd love to help on this one.

Air tank from canadian tire $30, (4) 3/2 valves <$60 each, either manual or solenoid.

If you hit all four valves at once, it'll drop like a rock!!
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Re: 3 wheeling w/air solutions

Postby Dreamstate » Sun Feb 01, 2009 10:41 pm

Now that I've typed it all out, it sounds like a cinch.
3 wheelin', here i come.
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Re: 3 wheeling w/air solutions

Postby Dreamstate » Wed Feb 04, 2009 6:53 pm

Actions speak louder than words

http://www.youtube.com/watch?v=x2DWDjVHoX0
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Re: 3 wheeling w/air solutions

Postby Dreamstate » Wed Feb 04, 2009 7:16 pm

This gives me the confidence to plan the install of such a system. It will be super simple.
Worst case scenario, my car does not pull 20 inches of vacuum, I will just have to engage the vacuum when completely deflated, on the ground.. even 15 inches would be enough to keep it up, even if it couldn't lift it.
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Re: 3 wheeling w/air solutions

Postby Maraschino Larry » Wed Feb 11, 2009 8:09 pm

Image

:glee:
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Re: 3 wheeling w/air solutions

Postby Dreamstate » Wed Feb 11, 2009 8:29 pm

prettttttttty
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Re: 3 wheeling w/air solutions

Postby diagnosis » Sat Feb 14, 2009 10:15 am

I still have those air cylinders kicking around if you want to use them for something, maybe the vaccuum canister(s)?. I forget the actual measurements of them, but they are roughly 8"d x 24"L
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Re: 3 wheeling w/air solutions

Postby tripwalking » Sat Feb 14, 2009 2:04 pm

could you use an air cylinder to inflate the bags? this is just a brain fart now, but I'm thinking of something like a piston that would displace air into the bag. It could also deflate the bag by retracting the cylinder. This would also create vacuum in the bag. You could adjust ride quality by the amount of air that the cylinder displaces into the bag.

:?:
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Re: 3 wheeling w/air solutions

Postby Dreamstate » Sat Feb 14, 2009 5:02 pm

diagnosis wrote:I still have those air cylinders kicking around if you want to use them for something, maybe the vaccuum canister(s)?. I forget the actual measurements of them, but they are roughly 8"d x 24"L


Actually, I would like to have a look.. do you have pictures? Are they rated to 200psi?
I have been having a lot of trouble deciding what to do with the trunk.. two such cylinders instead of my one may just work for me.
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Re: 3 wheeling w/air solutions

Postby Maraschino Larry » Sat Feb 14, 2009 6:18 pm

tripwalking wrote:could you use an air cylinder to inflate the bags? this is just a brain fart now, but I'm thinking of something like a piston that would displace air into the bag. It could also deflate the bag by retracting the cylinder. This would also create vacuum in the bag. You could adjust ride quality by the amount of air that the cylinder displaces into the bag.

:?:


this is a very interesting idea!
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Re: 3 wheeling w/air solutions

Postby Dreamstate » Sat Feb 14, 2009 6:37 pm

How would one deflate the cylinder?
I have had an idea with a combination of cylinders and bags, it would be a fantastic project, but it would take up half my trunk and cost too much money.
This combination, for each corner, would have one cylinder mounted in the suspension, one in an assembly with an air bag. Kinda bulky, but it would look neat. Not what this car is about though.

In simple fashion, the wheel can be raised with only spending an additional $15.. on a 3 way valve.
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