Flexing the 3 link (3 Viewers)

[Delancy]

I think the owner of this website recently destroyed his non rusty upper links(not the mounts themselves) in
moab?

Have you held one?

It's ridiculous to think they're stout enough, from a material or construction perspective, when stressing at the limits of what the OE links are capable of.

When I petitioned for interest in solid uppers, many laughed claiming they'd never seen one bend.

I bent two OEs and one Icon "unbendable" on the FJC, which wasn't nearly as stressed as the 80 uppers.

 

[Booger weldz]

Yeah, i cut the ends off and tacked them in adjustable length tubes for suspension mockup.

They dont fail from the tubing material generally. Its the weld at the bushing sleeve.


[
QUOTE="Delancy, post: 9214856, member: 68561"]Have you held one?

It's ridiculous to think they're stout enough, from a material or construction perspective, when stressing at the limits of what the OE links are capable of.

When I petitioned for interest in solid uppers, many laughed claiming they'd never seen one bend.

I bent two OEs and one Icon "unbendable" on the FJC, which wasn't nearly as stressed as the 80 uppers.[/QUOTE]

 

[Delancy]

Yeah, i cut the ends off and tacked them in adjustable length tubes for suspension mockup.

They dont fail from the tubing material generally. Its the weld at the bushing sleeve.

I harassed the producer of the solid stock lowers with OE bushings to produce similar uppers.....then bolted them on.

All failures of mine were at the ends, including the unbendable icon.

When simply cycling suspension to order shocks on the 80, noticed they frame side would bind against the inner mount, putting all the pressures on the weld.

Anyhow, to get back on track.

Who has a rolling chassis to play with?

Sheet metal can be cut, so a body doesn't matter and it'd be easy enough to envision ( in my case ) where a subframe would mount, to alt as link mounts and crossmember.

 

[Booger weldz]

Jason ginn(krazytoy)! Hes building the 80 for ultra4 and removed his body with a gradall in his driveway, lol. Cool dude.

I believe he is moving the gas tank and triangulating 4 links though

 

[Delancy]

Not relevant, since obviously a 4WU propaganda thread , and shop space is filling at FCs for 2017, now, but may elicit idears for a drop out subframe that incorporates the rear link mounts, too.

My only concerned would be the exposed bolt heads, but betting it's a temped deal.

@Booger weldz or @4WheelUnderground

Have a frame offer in Sacramento.

Either wanna work a little magic on and prep for links?

 

[DHwreckage]

jesus that is a pretty snazzy sub frame!

 

[nukegoat]

Ok, here's the screenshot for the radius arm front end of an LC80, 6" slee lift coils.




Working on the rear now so will post up in a short while.

One thing that's immediately obvious is that the roll axis angle is huge and must be a big contributing factor to poor handling.

I think your axle-side Z measurements are off. Mine sure as heck aren't 12" from the ground unless I really mismeasured.

 

[ToyRoverlander]

Did you notice the tire size? 36". Same as on yours?


That crossmember is sexy!

 

[yOHda]

Delancy, Thanks for posting these pics.

 

[4WheelUnderground]

Not relevant, since obviously a 4WU propaganda thread , and shop space is filling at FCs for 2017, now, but may elicit idears for a drop out subframe that incorporates the rear link mounts, too.

View attachment 901626 View attachment 901627 View attachment 901628 View attachment 901629 View attachment 901630

My only concerned would be the exposed bolt heads, but betting it's a temped deal.

@Booger weldz or @4WheelUnderground

Have a frame offer in Sacramento.

Either wanna work a little magic on and prep for links?

Would if I could. I'm 7 kit deep right now.

 

[Delancy]

jesus that is a pretty snazzy sub frame!

The man produces some incredible work.

He's my idol.

Delancy, Thanks for posting these pics.

It does lend for idears, eh?

I'm envisioning a full length, belly panned, subframe with link mounts, front and rear, attaching to OE fastener locations, then welding to frame, if need be.

One more, for merely S&Gs.

Don't know the story yet, because I don't hang out on that forum much, but check this out.

Product of Brave in Houston.

Would if I could. I'm 7 kit deep right now.

Cool and glad.

 

[Delancy]

Have a frame option in CA, but looking for a cheap roller to play around with.

 

[nukegoat]

Booger, can you provide your numbers for your front-end?

Did you notice the tire size? 36". Same as on yours?


That crossmember is sexy!

345 KM2s are supposedly around 36.4 but mine measure around 36.

 

[ToyRoverlander]

He did, those are the numbers I posted. If you think the measurements or wrong, and yours are on the same size tires, feel free to measure op, compare and post up the results.

 

[Booger weldz]

I have 36 iroks on front and noted a rolling radius of 17.25(34.5) for toyrovers plotting work.

I got a new set of 37 cooper SSTs on the way cause the biasply tires exagerate all the caster issues(death wobble @ 41-46mph when not steering). Everything is a real handful on the street with the current caster and roll axis(es). It wanders at speed and then chases ruts and ripples in the pavement.

Worse truck ive driven by far and that includes dedicated trail rigs limping home on broken parts from the hammers and a one ton taco with 9 degrees of oversteer and bumpster
from a trailfix pitman arm in moab.

I have a new front axle(garagefab 9.5 thread) and suspension to swap in in mid/late june. It will be .5-1 degree understeer and 70-80% AD.

I need a rear housing to redo the rear and minimize downtime. Would rather do tcase gears and weld the centerdiff for now.

 

[Delancy]

What do you think is the minimum "lift" necessary to get the pinion angle correct with the 9.5" for all to be happy on the front AWD?

 

[Delancy]

S&Gs.

DD had a flat, F350 wouldn't start, so wore the Pink Panties to work today.

DS rear was poofing dust clouds as she balanced.

Don't think I could compress the coils like this, in the rear world. Still no bumps, so coil bind does hinder overall wheel travel, but keeps them from rubbing, an unintended consequence.

Coils don't seem happy.

 

[ToyRoverlander]

Springs look fine, no coil bind yet by a long shot, they seem stiff, they don't compress all the way to the bumpstop. Softer springs will allow more articulation, to the limit of what the RA and shocks are capable of.

 

[Delancy]

Coil bind was the wrong choice if words, but don't know what to coil it's inability to compress further. The coil will not compress any beyond what's depicted.

Took it up 18" further, and the front didn't compress any beyond what you see, but the rear fender lip was biting on the tire lugs, general on the jobsite showed back up, so had to act like an adult.

The PS rear was bound, no about, and wanted to lift the rear similarly, but didn't get a chance.

 

[ToyRoverlander]

That's springrate preventing the spring from compressing any further. There's just not enough weight pushing on it to be able to get fully compressed. I won't be surprised to see it compress more when you lift the rear wheel up, more weight transfer to the front axle, pushing on that spring.

Judging from that last pic it looks like the tire would hit the springseat before the the bumpstop touches.

Rear axle steer is already visible as well...