Track suspension advice

[RehabJeff86]

Originally Posted by ddeflyer

When you had the seals fail do you think it was just the ambient temperature pushed things too hot? If that is the plausible cause do you suspect and oil cooler would have helped prevent it?

Yes that would be the only reason i could think of, my car was bone stock at the time except MXP exhaust

After a long research on what causes DI failure, no one knows lol but i concluded a software tune and oil cooler are the best bet to prevent DI failure again


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[SirBrass]

Originally Posted by CSG Mike

The car's biggest advantage is its stability at 80+, IMO.

High spring rates =/= upset chassis. The suspension's job is to absorb the road and maximize contact, not make the chassis move in accordance to every flaw on the driving surface. It all comes down to the damper.

Okay, and how do the dampers interact with the springs? I know what each does individually, but I'm not so clear on how their interaction affects handling.

[CSG Mike]

Originally Posted by SirBrass

Okay, and how do the dampers interact with the springs? I know what each does individually, but I'm not so clear on how their interaction affects handling.

Dampers "give" when needed, and "push back" when needed.

Ever been on a kart over a rough surface? It's painful; everything is transmitted directly toward the chassis. Now imagine if you can go over that same rough surface, but to the kart's chassis, the surface is smooth. That's what suspension does.

Note how the wheel moves, but the chassis does not. Gopro mounts are not rigid; if the chassis is upset, you'll see it as camera shake.

[ame="https://www.youtube.com/watch?v=NiA_Pq5YVaU"]S2000 Suspension in Action - YouTube[/ame]

[ame="https://www.youtube.com/watch?v=nGBZWkoQO-s"]CSG BRZ Buttonwillow 2:00 lap - YouTube[/ame]

[SirBrass]

Right. I get that. But how do they interact with spring rates?

[CSG Mike]

Originally Posted by SirBrass

Right. I get that. But how do they interact with spring rates?

I'm not sure I understand what you're asking.

Higher spring rates generally mean you need less compression damping (dynamic spring) and more rebound damping (so the spring doesn't extend too fast). Not enough rebound damping results in weight transitions that "gain momentum" and swing the way across the car too fast, resulting in traction loss.

When you turn in, the outer wheel compresses(compression damping), and the inner wheel extends (rebound damping).

[SirBrass]

Originally Posted by CSG Mike

I'm not sure I understand what you're asking.

Higher spring rates generally mean you need less compression damping (dynamic spring) and more rebound damping (so the spring doesn't extend too fast). Not enough rebound damping results in weight transitions that "gain momentum" and swing the way across the car too fast, resulting in traction loss.

When you turn in, the outer wheel compresses(compression damping), and the inner wheel extends (rebound damping).

Ah, okay. That answers my question.

And when you exit the turn, the inner wheel rebounds and the outer wheel compresses.

[Scottemad123]

Well I was going to ask the CSG guys questions about their new packages, but a lot of my questions are getting answered here. Cheers!

[CSG David]

Originally Posted by Scottemad123

Well I was going to ask the CSG guys questions about their new packages, but a lot of my questions are getting answered here. Cheers!

Don't be afraid to ask!

[ddeflyer]

So this is primarily aimed at the CSG folks, but if others have an opinion please chime in. Could you tell me about the difference between the "JRZ RS PRO - Double Adjustable Club Sport Damper" and the "JRZ RS - Double Adjustable Twin Tube Damper"? Also, do both of those come with camber plates? I don't think I see an option for them on the raceseng plates.

[scioneric]

Does Swift Spec R spring over kill our stock shocks with its higher kg/mm?

[CSG Mike]

Originally Posted by scioneric

Does Swift Spec R spring over kill our stock shocks with its higher kg/mm?

It'll be a bit underdamped on the rebound side, but nothing terrible. Anyone who needs/wants more damping wouldn't be considering the setup to begin with.

[Racecomp Engineering]

Originally Posted by ddeflyer

So this is primarily aimed at the CSG folks, but if others have an opinion please chime in. Could you tell me about the difference between the "JRZ RS PRO - Double Adjustable Club Sport Damper" and the "JRZ RS - Double Adjustable Twin Tube Damper"? Also, do both of those come with camber plates? I don't think I see an option for them on the raceseng plates.

JRZ RS PRO is a monotube 2 way. JRS RS is a twintube 2 way.

A twintube can be plenty good, but we've tested both and really prefer the RS PRO over the RS. We actually prefer the RS1 monotube 1 way over RS.

Camber plates would be an option for either one.

- Andy

[RehabJeff86]

Originally Posted by ddeflyer

So this is primarily aimed at the CSG folks, but if others have an opinion please chime in. Could you tell me about the difference between the "JRZ RS PRO - Double Adjustable Club Sport Damper" and the "JRZ RS - Double Adjustable Twin Tube Damper"? Also, do both of those come with camber plates? I don't think I see an option for them on the raceseng plates.

I likey u r looking at some serious stuff!!

[ddeflyer]

Originally Posted by RehabJeff86

I likey u r looking at some serious stuff!!

The pain of spending so much money on the car is significantly reduced after spending $4K+ (maybe 5K? I haven't added it all up since I was also buying stuff like a fire suit for a lemons race at the same time) getting a proper, full safety system (custom weld in roll bar, two fia certified seats, harnesses for both, hans device, mounting stuff, etc.) for the car. Building a good dual purpose machine is pricey (but very fun).