CSG and RCE tag-team suspension Q&A thread! Ask us anything!

[CSG Mike]

Originally Posted by Lawnik

@CSG Mike

Your thoughts on roll center and bump steer correction kits? At what ride height do they become nessesary if any?

Thanks for the help

It's impossible to make a blanket statement, due to different setups having right height ranges and different damper stroke range needs...

[Turkish]

Originally Posted by CSG Mike

I'd recommend sticking to 215; the car will feel sloppy on 225 with stock wheels.

What do you mean by feeling sloppy?

Originally Posted by CSG Mike

Yes, but that is with 17x8 wheels, not 17x7.

225mm is about 8.86 inches. Do you really want to mount a tire that wide on a 7 inch width rim?

10mm is less than a half inch, 215mm is 8.46" and 225mm is 8.86". I am just curious how much "negative" there will be in the feel of the tire vs "positive" in the increase in grip.

I am also looking at putting michelin pilot super sport tires on my stock wheels.

[CSG Mike]

Originally Posted by Turkish

What do you mean by feeling sloppy?



10mm is less than a half inch, 215mm is 8.46" and 225mm is 8.86". I am just curious how much "negative" there will be in the feel of the tire vs "positive" in the increase in grip.

I am also looking at putting michelin pilot super sport tires on my stock wheels.

The steering wheel won't be as responsive, because the sidewalls have to deflect more under a lot of force.

[Turkish]

Originally Posted by CSG Mike

The steering wheel won't be as responsive, because the sidewalls have to deflect more under a lot of force.

Ah, gotcha. Thanks!

[Sleepless]

On the SPL rear LCAs, what is the relative stiffness between the three shock mount holes?

[CSG Mike]

Originally Posted by Sleepless

On the SPL rear LCAs, what is the relative stiffness between the three shock mount holes?

What exactly do you mean?

[troek]

Originally Posted by Lawnik

@CSG Mike

Your thoughts on roll center and bump steer correction kits? At what ride height do they become nessesary if any?

Thanks for the help

i just put on the whiteline roll center kit, with my rsr super down springs, its a very noticeable difference in steering response, and the front end dosnt dip down under sharp cornering like it did before. very worth it in my opinion. i didnt think i would notice anything but i did. ill be writing a review when i get a little more time.

[Sleepless]

Originally Posted by CSG Mike

What exactly do you mean?

My understanding is that the effective spring stiffness is altered by choosing one of the three shock mounting holes. In other applications this is usually expressed as a percentage relative to stock which I presume is the center hole. I can't find this spec for the SPL LCAs

[solidONE]

Originally Posted by Ashikabi

That's why I'm asking. I expect making a one off at my work wouldn't cost near as much as contracting it out. But I'm not an engineer. However having the only aluminum subframe would be pretty darn cool. What thickness tube do you think I'd need too use for the same strength?

You will probably shed more weight just getting a muffler delete. It's not just how much material in being used. It's also how the piece is shaped and braced for different loads at the mounting points. If you are even asking these questions, IMO, you should not attempt it unless you are willing to learn how to not only design a piece like this but also fabricate it correctly. You're in the wrong forum for these question. Go ask the same questions in an engineering forum and see what they say. good luck

[Ashikabi]

Fair enough. What about a retrofit of the Z frame?

[solidONE]

Originally Posted by Ashikabi

Fair enough. What about a retrofit of the Z frame?

Do what you please. lol

[Turkish]

So I will soon be pulling the trigger on rear lower control arms. I find myself in a bit of a dilemma though. Do I back order the Whiteline LCAs ($500) and hope I get a pair by July 2015 or purchase the currently available SPC LCAs ($210). I am currently running my car in the STX class of autocross which means I cannot change the type of bearings or bushings in the control arms.

My question really is: is there any good reason for me to save some more $$ and back-order the Whiteline control arms or just go forward with the SPC control arms?

[troek]

if your not allowed to swap bushings, im surprised swaping an entire control arm that comes with a pillow ball is not a violation....

[Turkish]

Originally Posted by troek

if your not allowed to swap bushings, im surprised swaping an entire control arm that comes with a pillow ball is not a violation....

Whiteline isn't pillow ball, its one of the few that isn't.