Goblin Rear Control Arms

finazzoty

Well-Known Member
This is how engineering is done.

Not even a joke. I've been involved in multi-million dollar projects where the words "I need a bunch of clamps and a really big hammer" were said. And then science happens.
I was on the FSAE team in college and this is exactly correct. Just because something hasn't been done before, doesn't mean it can't be
 

ah.b.normal

Goblin Guru
Some times you gotta build the wrong thing based on WAG's in order to imagine and build the right thing. Sometimes you need a bigger hammer and sometimes you need to stop and take a second look.
 

Floyd

Member
I had mentioned this in my build thread, but I wanted to see more opinions.

My goblin does not have the "control arm support brackets". They are referred to in the Haynes manual as "movement limiting brackets". There are 4 of them: one for each of the bolts that attach the control arms to the sides of the subframe.
38670


Here, is where the manual warns to be sure to reinstall them, or "handling could be affected."


Curious if I should I look into buying a set, or is the Haynes manual off base and there is no reason to get them?
Has anyone run with and without and had any difference?

I have already taken the biggest step and installed the Moog K201285 bushings.
 

Joebob

Goblin Guru
Where do those control arm support brackets even mount on a Goblin?
It is the black thing, next to the other black things. In my view, they are impact protection for the rubber bushings for the life of the control arm and should not affect short term handling performance i.e, they keep the bushing from going bad but not help in any handling aspect.

Joe
38674


38675
 

Ark :D

Goblin Guru
I feel like they include the condition of the bushing as part of the handling aspect. Who knows though?!
 

Ross

Goblin Guru
It is the black thing, next to the other black things. In my view, they are impact protection for the rubber bushings for the life of the control arm and should not affect short term handling performance i.e, they keep the bushing from going bad but not help in any handling aspect.

Joe
...
Thanks. I do have those on my goblin. 41 foot pounds on that bolt.
38676
 

Gtstorey

Goblin Guru
I would think they add at least a little to the. Rigidity. It doesn’t allow as much movement front to back.

it also should greatly extended the life of the bushing since without it all it has is the bonding of the rubber to the interior metal.
 

k.rollin

Goblin Guru
I had mentioned this in my build thread, but I wanted to see more opinions.

My goblin does not have the "control arm support brackets". They are referred to in the Haynes manual as "movement limiting brackets". There are 4 of them: one for each of the bolts that attach the control arms to the sides of the subframe.
View attachment 38670

Here, is where the manual warns to be sure to reinstall them, or "handling could be affected."


Curious if I should I look into buying a set, or is the Haynes manual off base and there is no reason to get them?
Has anyone run with and without and had any difference?

I have already taken the biggest step and installed the Moog K201285 bushings.
I had them on mine up until I installed the OTTP delrin bushing kit; they don't fit properly over the new pivot pin.
 

Andy

Well-Known Member
I put urethane bushings in mine I think from redline. I am mainly a road car with some autocross. Stiffer than stock but enough dampening to still take out the jolts. I have ran cars with full rod end setups and it does make the car tighter but you feel it when you hit a seam in the concrete. And drives the suspension loads up from not providing any dampening so you can wear components out quicker not likely a problem on the goblin.
 

Robinjo

Goblin Guru
I put urethane bushings in mine I think from redline. I am mainly a road car with some autocross. Stiffer than stock but enough dampening to still take out the jolts. I have ran cars with full rod end setups and it does make the car tighter but you feel it when you hit a seam in the concrete. And drives the suspension loads up from not providing any dampening so you can wear components out quicker not likely a problem on the goblin.
You feel every seam/bump in the road in a Goblin with the stock rubber bushings. Or, at least I do.....
 

Gtstorey

Goblin Guru
You feel every seam/bump in the road in a Goblin with the stock rubber bushings. Or, at least I do.....
You might want to play with your suspension settings. I've been surprised how well mine actually rides. It's better than my stock C4 Corvette and similar to (or maybe better) my upgraded suspension Gen5 Camaro. And my Goblin has the OTTP Delrin front bushing and the Moog Problem Solver rear bushing.
 

Robinjo

Goblin Guru
I did have my rears set WAY too hard. I was at 4-clicks away from hardest and recently put them at 4-clicks from softest (I think last weekend or the one before). It made a huge difference in feeling and being planted. I feel the bumps a lot less, but they are still there. Not bad, but the vehicle doesn't just roll over them like my CX50 or Sienna either.

I did an autocross with them at the hard setting and the rear came around really easily. It being a high of 35 that day didn't help the tires grip, but I suspect a lot of it was how stiff the suspension was.
 

Desert Sasqwatch

Goblin Guru
Note, stiffer in the rear induces oversteer - whether that is by heavier springs, a swaybar added (or up sized) and tightening up the shock/struts - it's all the same. Without doing anything to the front to compensate/rebalance will induce an end swap under hard driving conditions.
 
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