Rear panhard mount for the ecto?

[majin]

I did the axle swap on the ecto I now have rear wheel steering... Sort of.
I'm having issues setting my epa on channel 5 so the wheels turn too much driving my tires into my sliders. Not good
But when I activate the rear my chassis slides from side to side in the rear. It flexes out of line. When I return to neutral setting the rear is out of whack. Instead of driving straight it has a slight crab walk to it.
Would adding a second rear panhard mount solve this? I feel like it would firm the rear up like it does the front.

My front panhard is attached to the rock pirates shock towers. The rear has no mount FOR the panhard.
Does anyone have any ideas on how or where to find a suitable replacement for the rear?

 

[332_RC]

A few Element panhard mounts.
https://rockpiratesrc.com/collectio...wler-parts/products/panhard-bar-chassis-mount

https://www.amainhobbies.com/element-rc-enduro-gatekeeper-panhard-plates-asc42255/p1271189

 

[332_RC]

Sounds like the servo is making the axle do what it wants. What play is in the suspension & the servo returns to center, leaving the axle un-centered.
The panhard rod would probably fix it. I'm not sure. A SOA in rear might, using another printed mount, but a mod to the front servo tray you've moved to the rear would require cutting the center bar out for servo clearance.

 

[332_RC]

Well I googled it. I found a thread on a RC crawler forum that said a true 4 link suspension w/o a panhard rod & chassis mounted servo was a nightmare for bumpsteer. Which I think is what you're experiencing.

 

[majin]

Well I googled it. I found a thread on a RC crawler forum that said a true 4 link suspension w/o a panhard rod & chassis mounted servo was a nightmare for bumpsteer. Which I think is what you're experiencing.

I think so as well
Once I get over this cold I'm gonna try it on the trail and see if I can still drive this way.
That rp panhard is getting ordered asap tho lol just in case

 

[majin]

A few Element panhard mounts.
https://rockpiratesrc.com/collectio...wler-parts/products/panhard-bar-chassis-mount

https://www.amainhobbies.com/element-rc-enduro-gatekeeper-panhard-plates-asc42255/p1271189

O snap I think I have the original mount in a bag I wasn't thinking correctly lol when I saw the pic on Amazon I remembered I have that somewhere
Might get it on today that would be cool

 

[332_RC]

Original mount & panhard rod from front could be used now you got SOA no panhard in front? Added the 4th link to front, because it's a 3 link w/o the panhard. The mount in frame & top axle mount all already there for the 4th one, just not on it from factory

 

[332_RC]

I measured. The panhard rod is a little short for a upper 4th link.

 

[Littlemotor]

What you would need is called a “Watts Link”. Two opposing panhard bars will not work, because as the axle travels up and down with a panhard it actually DOES move laterally within the chassis. The two bars would fight each other. A Watts Link would solve that issue, as it does NOT move laterally through suspension travel.

Another option to consider would be removing the upper control arms/“links”, and going with a wishbone to triangulate from the axle to the chassis. This will also work properly with high suspension articulation, but would be more difficult to make work in a crawler chassis due to possible interference with the rear driveshaft.