one way of getting 18" of travel--

[Pedro_The_Swift]

hmmm--

[jakeslouw]

and that might need a couple of kidneys as a down payment

[rick130]

From what I can see the geometry sucks in roll.... (unless there's some lateral control I can't see)

I know, I know, they all use trailing arms in the back end.

I still reckon they suck in roll. :p

[Pedro_The_Swift]

I think its a solid axle in there too, most of the big trucks run solid rear ends,, funny for a --
well I'm not sure exactly what it is,,:p

[rick130]

Maybe it is ?

In that case I take it back, and I have seen a bellcrank used like that to get some slightly more sane damper/spring travel, but that's the biggest bellcrank I've ever seen seen.

[edit]You're right Pedro, you can see the bump stop further inboard.

[Pedro_The_Swift]

you gotta love how off road suspension has evolved,,
now they use torsion bars on the (outside) bumpstops:p

been hydraulic for yonks though :confused:

[uninformed]

Good chance it is a trophy truck.....but then the chassis has me stumped, arent they usaully space frame tube? Id say there is a anti roll bar in there (is it mounted inside the ends of the bell cranks? have a look at the caps with socket cap screws....im thinking the "shaft" is inside this and joins the 2 bell cranks???). Im sure Dougal could add some on the suspension set up. Yep, solid axle with trailing arms and wishbone upper. Im guessing one of the reason they have gone to this set up over the more traditional mounting of the C/O and BP on the TA is to get some of the weight behind the axle and it has the weight lower...

just lots of WAG, but the fab level is insane...I suck

BTW id say more in the region of 25-30 inches of travel if a TT?

[rick130]

[snip]
Id say there is a roll bar in there (is it mounted inside the ends of the bell cranks? have a look at the caps with socket cap screws....im thinking the "shaft" is inside this and joins the 2 bell cranks???).

[snip]



Could very well be.
One of my old racecars had the front ARB mounted like that.

Neat packaging idea, but it meant I needed 6-8 ARB's instead of two adjustable ones.

[clubagreenie]

Agree with the ARB on the cross shaft, not seeing the torsion bar bump stops, did play with a torsion bar valve spring setup last week. Very cool yet strange.

[Slunnie]

Flash engineering.

I wonder why they didn't set it up on the lower link which would reduce unsprung mass, move the suspension mass to a more controllable area of the vehicle for dynamics, increase the suspension strength with the same mechanical advantages on the springs/shocks, gain clearance after the axle and a have a mechanically simpler and probably more reliable design.

Then again, it looks cool and can incorporate an anti-sway bar.

[uninformed]

Flash engineering.

I wonder why they didn't set it up on the lower link which would reduce unsprung mass, move the suspension mass to a more controllable area of the vehicle for dynamics, increase the suspension strength with the same mechanical advantages on the springs/shocks, gain clearance after the axle and a have a mechanically simpler and probably more reliable design.

Then again, it looks cool and can incorporate an anti-sway bar.

Im not sure it makes much difference to the unsprung mass, while the TA's they are running are smaller than the bell cams, they are no way capable of having the C/O and BP mounted to them. It would mean the more traditional type TA which are going to be much bigger and heavier....so bring it back to similar weight of the bell cam. I doubt rear axle clearence is an issue for these desert type racers. again I doubt strength an issue either. What I do think they gain is more ability to tune the suspension.

I could very well be wrong