torque tube suspension limits....

[Mieser]

I thought I would move some of this to another tread off of the toyo-mog post of wolfgangs.....

What I want to know is the articulation limits of the mog tube suspension...



Looking at the pic, unless there is something inside the torque tube coupling at the axle.....if the motor wasn't in the way and stuff....would be able to just spin around 360 degrees. I would guess there there is a limit in the angle that the coupling can handle? If anyone knows what angle that is...please share. Looking at some of the european buggys articulation doesn't seem to be much of an issue, just wondering.

So...whats the limiting factors in the mog suspension?

[Wolfgang]

The flex of the Mog suspension isn´t bad. Thats not the complete flex on the pic. It´s not the limit. In my opinion is big flex like some buggies have only good for show because there is absoltly no pressure to the ground. No pressure - no traction.
I never understood the sense of revolver shackles or tricks like that.
www.killeraxles.com

[Puffdragon]

that flex shot is pretty weak, my mog can spank that trucks Arse.

To my knowledge, there are not limits on the torque tube rotation, and if it werent for the obvious, it could easily rotate 360 degrees. And yes the massive suspension flex that seemingly has little use, is of use, but it is pretty complicated to explain, and is for another day, and yes Revolvers are crap.

[cruiserrg]

I am no MOG expert by any means, but looking at the suspension the limits are going to be the shocks when they bottom out. The other possible limit is the coupling at the transfer case, but when the axle is in compression or droop the angle the coupling travles through is very small relative to the amount of travel.

So it looks to me that the torque tube isn't going to limit the travel, the limit will be things like shocks, drivetrain, and frame. And these can easily be designed to allow for large articulation and travel.

[unissamog]

in the illistration they show the limits of the stock springs-shocks. you can exceed that w/o too much trouble.



I havn't taken the torque tube pivots apart, but I don't believe there to be a limit for them.

[coachgeo]

hey. can we get a shot of that with all the suspension hardware reinstalled. That would be a great comparison

[Mieser]

I think that'll work!

For the amount of flex I don't think you can get much more simple than the torque tubes. Now if I can only figure out how to mount the motor and t-case without breaking.

[ryeguy]

The flex of the Mog suspension isn´t bad. Thats not the complete flex on the pic. It´s not the limit. In my opinion is big flex like some buggies have only good for show because there is absoltly no pressure to the ground. No pressure - no traction.
I never understood the sense of revolver shackles or tricks like that.

Yeah, rotationally wise, there's lots of range! One limit would be overall droop of the axle, but that isn't a big deal as a rule (high centering problem).

Re: revolver shackles, etc. to maximize travel: all good things. But everything in moderation. Even with little or no pressure on the ground when articulated, there are gains:
- A tire on the ground means that when your body shifts, your shock(s) can help dampen/slow/retard the effects; if the tire is just in the air you are at the mercy of gravity and other nasties. It may not be much of an effect, but sometimes you don't need much to save yourself from a bad predicament.
- Even with no weight on the tire when at idle a well designed suspension (like a 4-link design) can let the engine/drivetrain torque force that tire into the ground when you are moving - think anti-squat, etc. Been there, it works.

This is why the suspensions I've designed for trail only (not the my UniBlazer) had lots of travel, to the point where you could take out a coil spring when at full droop even if the normal range of expected suspension movement is much less (and tuned as such).
http://www.can4x4.com/irc/members/s1/andy2.jpg
http://www.bc4x4.com/album/albumphoto.cfm?id=43
http://www.bc4x4.com/tr/2000/prc/prc-20.jpg (check out the front tire here, without that droop, I woulda been on 1 tire...)

--Rob
www.exaxt.ca