Frame "twisting" (7 Viewers)

[Fantom]

So I couldn't decided where a question like this belongs, so if this isn't the spot - sorry.
In the expedition forum https://forum.ih8mud.com/showthread.php?t=167008&page=3 post #73 (tried transfering pics but no luck) I'm wondering how can you make a frame do that. Specifically the 13th, and 15th pic. Granted my idea would be for something smaller like a FJ45 or a minitruck but how can you safely have the frame "rotate" in the middle? Any suggestions?

 

[gladly]

here you go

it looks like this:

 

[gladly]

discussion here:
http://www.powerwagonadvertiser.com/forums/showthread.php?t=1197

and more pics: http://imageevent.com/rockinjwranch/1953dodgeswivelframepw

 

[Fantom]

Cool, yea that's kinda what I was looking at

 

[Fantom]

That is very cool, but after some searches on the net I have not been able to find a lot of stuff on it. Why did this not catch on more commonly? So far I keep finding the same truck and info about it. What's wrong with the design that it would not be more used and popular?

 

[Mace]

Because there is no reason for it realistically.

It looks cool, but has a lot of inherent oddities..


Do you really want to be able to roll the front of your truck and have the rear firmly planted on the ground?

 

[splitshot]

Because there is no reason for it realistically.

It looks cool, but has a lot of inherent oddities..


Do you really want to be able to roll the front of your truck and have the rear firmly planted on the ground?

You wouldn't loose your load that way

Seriously, I'd think it would be dangerous on high speed turns also.

 

[Eskimo]

No dampening in that joint either..

 

[Tapage]

No dampening in that joint either..

I thought there are some units ( as long chevys and fords PicUps ) that have a " flexible " frame .. to compensate the rigid suspension ..

 

[Mace]

no stock chebies or ferds use that setup that I know of...

Perhaps some specialty unit..

(I drive a CC long bed F350)

 

[Eskimo]

I thought there are some units ( as long chevys and fords PicUps ) that have a " flexible " frame .. to compensate the rigid suspension ..

No, their frames just suck. (I drive a Dodge, it flexes alot too)

There's just so much you can do with a ladder-based frame to make it rigid without putting a cage on it.

 

[Fantom]

I can see the design might need some alterations like dampeners or some kind of shock absorbers. On the highway is would probably be kind of like driving with a trailer, but for off-road, the articulation would be higher. Also a roll over in a scenario where only the front or back are off camber would be less likely. IMHO.

 

[Eskimo]

Why not just let the suspension do the work?

 

[MutleyFJ62]

Have a look at how the Mercedes Unimogs are constructed, they use a central spine with pivots off the spine. Little more reliabe then just a joint in the chassis, which i would think would be pretty hard to maintain in terms of wear and play within the housing, especially with weight on it.

 

[Mace]

I can see the design might need some alterations like dampeners or some kind of shock absorbers. On the highway is would probably be kind of like driving with a trailer, but for off-road, the articulation would be higher. Also a roll over in a scenario where only the front or back are off camber would be less likely. IMHO.

There is a reason it is not widely used..

But, if you feel it is a good idea then do it. Kinda like off center links..

Please report back what your findings are.