SCCA CAM-C Thread

[mavisky]

Not what I wanted to hear, but I already suspected it...so the question I should already know, are the M1/500 dampers the same part number? And are the 350R dampers a different part number? And if they are different, which is stiffer?

I feel like there's potentially something within the DSC controller as I can switch back and forth from the stock controller in race mode to the DSC unit, and I don't get the same "floatiness" that seems to present itself the most when you hit a bump with both front struts. Not sure why the issue exists, and wish the datalogging of the DSC was a bit better to be able to plot speed, shock velocity, and shock voltage against one another. Even if I could just dump the data to an excel spreadsheet it would give me some additional insight into what it's doing.

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[WItoTX]

I feel like there's potentially something within the DSC controller as I can switch back and forth from the stock controller in race mode to the DSC unit, and I don't get the same "floatiness" that seems to present itself the most when you hit a bump with both front struts. Not sure why the issue exists, and wish the datalogging of the DSC was a bit better to be able to plot speed, shock velocity, and shock voltage against one another. Even if I could just dump the data to an excel spreadsheet it would give me some additional insight into what it's doing.

Did you have the floaty issue when you had the Steeda tunes?

 

[MrMike]

The one that won't let you post in his very special forum if you own a peasant mustang.

I literally added the entire GT500 section to my ignore list years ago because of this.

Just wait until he gets his GTD...

I was hoping that would go to M7G lol

 

[mavisky]

Did you have the floaty issue when you had the Steeda tunes?

100% which is why I sent the unit back to DSC and paid more money to have it reverted back to the default DSC firmware. It's much better now, but still present.

 

[CobaltFilly]

TeeLew banned? Glad Im on TMO, that guy is a wealth of information, just like you all are.

 

[shogun32]

100% which is why I sent the unit back to DSC and paid more money to have it reverted back to the default DSC firmware

Wtfrack Steeda. You're supposed to improve product, not make it worse!

 

[shogun32]

TeeLew banned? Glad Im on TMO, that guy is a wealth of information, just like you all are.

And he has a few thousand hours on Michelin slicks and probably 300 hours at Daytona alone.

 

[tosha]

Just wait until he gets his GTD...

I really hope he will be blessing 7G platform with his time and very important opinions

 

[CobaltFilly]

He got a GTD!!! He deserves it

 

[webspoke]

100% which is why I sent the unit back to DSC and paid more money to have it reverted back to the default DSC firmware. It's much better now, but still present.

I use slightly modified DSC calibrations on my GT500 with steeda magneride springs. No float at speed over undulations or bumps. Drop me your emails and I can send the files.

Shock calibrations
Front range - 700-850ma
Rear range - 650-750ma

Velocity calibrations
compression front low speed - (-1.5)
compression front med speed - (-0.7)
rebound front - all zero'd

Compression rear low speed - (-2.0)
Compression rear med speed - (-2.0)
Compression rear high speed - (-1.0)

Rebound rear low speed - (+1.5)
Rebound rear med speed - (+2.0)
rebound rear high speed - (+2.5)


This vid is at our bumpiest local track.

 

[shogun32]

Rebound rear low speed - (+1.5)
Rebound rear med speed - (+2.0)
rebound rear high speed - (+2.5)

interesting. technically rebound force is near-constant unless you're into the higher-rate portion of the spring vs the low. I wonder if DSC is ascribing low/med/hi based on displacement from zero? Or in response to the immediately preceding compression stroke severity?

 

[mavisky]

I use slightly modified DSC calibrations on my GT500 with steeda magneride springs. No float at speed over undulations or bumps. Drop me your emails and I can send the files.

Shock calibrations
Front range - 700-850ma
Rear range - 650-750ma

Velocity calibrations
compression front low speed - (-1.5)
compression front med speed - (-0.7)
rebound front - all zero'd

Compression rear low speed - (-2.0)
Compression rear med speed - (-2.0)
Compression rear high speed - (-1.0)

Rebound rear low speed - (+1.5)
Rebound rear med speed - (+2.0)
rebound rear high speed - (+2.5)


This vid is at our bumpiest local track.

I will send my email and would be happy to review your files for comparison. I think part of the issue is that the base GT350 dampers are physically different units not capable of as much damping force as the GT350R and GT500 units. I'm not aure how the Mach 1 units compare but it's likely they are using the same GT350R/GT500 units.

 

[shogun32]

I think part of the issue is that the base GT350 dampers are physically different units not capable of as much damping force as the GT350R and GT500 units. I'm not aure how the Mach 1 units compare but it's likely they are using the same GT350R/GT500 units.

that is correct. even at 'max volt' the old GT350/PP1 units simply don't damp enough. How much of it is piston vs fluid characteristics I don't know but if you have a MR car, you have to get the newer dampers.

 

[webspoke]

interesting. technically rebound force is near-constant unless you're into the higher-rate portion of the spring vs the low. I wonder if DSC is ascribing low/med/hi based on displacement from zero? Or in response to the immediately preceding compression stroke severity?

My guess it is displacement/time, as these cars do not have the velocity sensors like the newer gen GM cars. You can feel the difference between changes to low/med/high velocity sections. I was having some snap oversteer on left-right transitions at high speed/braking load - reducing rear low/med compression stopped it.

 

[shogun32]

reducing rear low/med compression stopped it.

which is good enough since it solves the problem, even if we don't grok what's actually going on...which was TL's main objection after trying to figure the sum'bitch out.

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