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Building vehicle teeter totter, need advice

mrk5

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Our local 4x4 club, of which I'm a club officer, is talking about building a teeter totter. For those that haven't messed around with one, this is what it is:


We used to have access to one from another club but theirs is no longer mobile. It really wasn't built the best anyway so the club is looking into building one ourselves. I volunteered to lead the project so I'm looking for some design input/ideas.

If this isn't a picture of the one we were using, it is very similar to it:

B0G_nRWIAAAn3dE.jpg


I think part of the problem with the design above is that the ramp would slam down so hard from a relative high distance that the teeter totter was slamming itself apart. I also think the lack of a suspension in the trailer when towing didn't help either.

I like the simplicity of this design:

7792457236_1e6c41a5d9.jpg


IMG_2257.jpg


Downside to that simple design is I feel like it is a little boring. I do think the original design above is a little more fun and challenging because it is relatively tall. We were thinking we could mount some collapsing bumps stops at each corner of the teeter totter to absorb the impact.

I will say it is extremely difficult to get a vehicle to balance. I've never seen it done and I've only heard of 1 person doing it at any of our club events. I've been wondering if there's something we could do to slow the action of the teeter totter a little. I don't know, maybe that would make it harder?

The other trick is this essentially needs to be a trailer so that we can haul it to various locations. And as I mentioned above with the problems we had on the previous teeter totter, I think it should have some suspension when it is being towed.

I also need some input on how heavy the steel needs to be for the driving surface. Keeping in mind we should assume there's a possibility of someone trying to drive their crew cab longbed Super Duty on it. So it should probably be ready to support 8000lbs.

Thoughts?
 
And I don't know, maybe making it a trailer it too much to ask. In Colorado it will have to be titled, inspected, and all that. Maybe we should build it to be transported on a car trailer.
 
I like the first one. I agree the other 2 look boring.

I like the bump stop idea to keep it from destroying itself.
 
How collapsible would the bumps really need to be? Maybe just mount some poly's straight to the bottom. No real height issues, and no need to fold them out.
 
I had thought about these:

102931_305-1.jpg


But these would probably be good enough:

DYS-KU09014BK_xl.jpg


Another thing I was wondering is if we could just chock the tires on the trailer and not even do anything else fancy with the pivot point. I figure the chocks would need to be locked together on both sides of each tire.
 
Those bottom ones I think would be fine.

If you tied the chocks together it might be fine.

Not sure what else. Never been on one. Never seen one.

I would build it as simple as possible that's for sure
 
Line the bottom outer edges with car tires???

Those daystar bumps are kinda pricey and IDK if they would really do much. Those poly ones, or a set of the ones like Jesse is running from an s-10 or something can be had cheap.

Im curious at how they do the pivot. Be cool to rob a front axle of the spindles and hubs to make it.
 
Some hyrdo cylinders with a pressure valve like they have on tilt trailers might slow it down a bit.
car_hauler_trailers_cht0005_C_.jpg
 
Could just do some stiff shocks. Rs 9000s would work well cause you could adjust em
 
Seems more challenging without shocks...

I wanna see one with like a 6' tall pivot....
 
Well 2 shocks at an angle will not really slow it down much.

The only thing I have heard about teeter totters lime this is they tend to get ignored after a while cause they are so difficult to do
 
What would make this a lot more interesting and unique is if you built a normal teeter totter but then also had hydraulic rams (could be long travel bottle jacks) setup up diagonal from each other on opposing ramps so the ramps could scissor. Would also be a cool way to flex out the vehicles. The most simple design would only require two long travel 8 ton bottle jacks like you get from Harbor Freight. You would basically have a subframe that the hinged ramps would sit on and the bottle jacks would lift the ramps off of that subframe while the subframe itself was a teeter totter
 
What I am talking about doing is something like below but instead of just scissor lifts at opposing corners you have a continuous ramp on each side supported by a bottle jack that causes the same action

4-Jeep-Beach-Daytona-4-29-14.jpg
 
I designed one a few years ago. Went on my trailer upside down then park the Jimmy on it. I will
see if I can find the sketches.
 

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