Stretch’s ext. track goblin #386 SS/TC

[Stretch2126]

Are your lower control arms and tie rods level with the cars loaded with normal weight, looks like they are angled up. This may be some variation of bump steer. If they are angled up to start with that will increase bump steer even more as you load the front end under braking.

Unless I have ridiculous caster the steering rod end will always have a little height over the rack. The lower control arm is level but the video angle might give the idea that it’s raised. Keep in might this video I have the shocks stiff since the vibration comes on quicker, same stiffness I race with.

 

[Stretch2126]

As for DS I can’t tell if it’s opposite or parallel hop when driving. Can’t see that fast in real time and I’m really only looking at one wheel.
This is only when tires are sticky and brakes are balanced. Too little valve, fronts usually just lock. Too much and rears will lock. This is what happens when it’s at the right threshold to really get stopping force applied. Also why its amplified on Hoosier slicks.

 

[Gtstorey]

Is this running some sort of race tire?

 

[TravMac]

I've got the same issue - so curious what you find more. I thought it was a loose jam nut or shot control arm heim joint, but I fixed what I could find and still no improvement. I got the solid billet rod end mount kit to see if that helps stiffen the corner too, but haven't tested it yet.

 

[Stretch2126]

I've got the same issue - so curious what you find more. I thought it was a loose jam nut or shot control arm heim joint, but I fixed what I could find and still no improvement. I got the solid billet rod end mount kit to see if that helps stiffen the corner too, but haven't tested it yet.

Let me know if that helps cause I’m grasping at straws here too.

 

[Stretch2126]

Is this running some sort of race tire?

It will do it on any tire really, but I can stop harder on a slick and it comes on faster. My street tire is a falken rt660.

 

[Ross]

Finding a good wheel alignment mechanic is essential to a good handling goblin.

Check that the suspension & steering parts aren't worn out, take your time to get the suspension level, with weights on the seats.
Then get a laser wheel alignment, with a mechanic who is willing to take his time, and get it right.
I like to bring weights to put on the seats, as this helps get the alignment right... but some shops have their own weights.