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December 16, 2017, 01:40:32 PM

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Poll

Guess the New SSC Pax

0.810
0 (0%)
0.811
1 (6.3%)
0.812
2 (12.5%)
0.813
2 (12.5%)
0.814
5 (31.3%)
0.815
4 (25%)
Other
2 (12.5%)

Total Members Voted: 16

Author Topic: SCCA creates new spec class for FR-S/BRZ between Street and ST  (Read 1591 times)

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E6Cueman

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #30 on: October 12, 2017, 01:52:11 PM »
And for context...

SS   0.826       SSP   0.862       XP   0.892       AM   1.000
AS   0.819       ASP   0.856       BP   0.869       BM   0.956
BS   0.813       BSP   0.853       CP   0.854       CM   0.901
CS   0.810       CSP   0.860       DP   0.865       DM   0.906
DS   0.801       DSP   0.842       EP   0.859       EM   0.905
ES   0.794       ESP   0.837       FP   0.873       FM   0.916
FS   0.804       FSP   0.829       HCR   0.825       FSAE   0.966
GS   0.793                                   
HS   0.786       SSR   0.847       SMF   0.848       KM   0.939
HCS   0.809                   SM   0.861       JA   0.864
            CAM-C   0.823       SSM   0.875       JB   0.834
STF   0.800       CAM-T   0.817                   JC   0.726
STS   0.818       CAM-S   0.838                       
STX   0.822                                   
STR   0.830                                   
STU   0.831                                   
STP   0.820                           

sti-tom

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #31 on: October 12, 2017, 04:01:34 PM »
0.816

JamesTCallaghan

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #32 on: October 12, 2017, 04:31:51 PM »
0.816

0.815-0.816 is my guess as well.

MurrayPeterson

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #33 on: October 12, 2017, 04:56:46 PM »
The SSC car is essentially a CS FR-S car minus 10lbft of torque, and plus 0.5" of wheel and 0.5 degrees of camber. I was being pessimistic with my guess... I think it'll be better than a CS ND Miata... but don't think it'll be better than a good BS car.

Your argument is (somewhat) convincing, so I ended up voting for .814
The (somewhat) is because that camber allows much more effective use of that extra wheel width.  And effective usage of your rubber trumps so many things.
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PedalFaster

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #34 on: October 13, 2017, 07:27:08 AM »
We're missing one key piece of information, which is what the spec tire will be. If it's anything other than the RE-71R, Rival S, or Nexen, SSC could end up slower than CS.
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E6Cueman

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #35 on: October 13, 2017, 07:41:34 AM »
Your argument is (somewhat) convincing, so I ended up voting for .814
The (somewhat) is because that camber allows much more effective use of that extra wheel width.  And effective usage of your rubber trumps so many things.

A BS Vette has about as much camber as it wants doesn't it? And a lot more tire and thrust versus mass.

The Tire Rack friendly wheel offset regulations look like they are going to limit SSC cars to about 2.5 degrees front camber.  STX twins run more than three, so one has to wonder if 2.5 will be enough.  In the rear, street regulations give twins adequate camber.

Regardless of where PAX ends up, I'm locked in, and excited about the idea of some local competition outside of the index. 

MurrayPeterson

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #36 on: October 13, 2017, 08:58:08 AM »
Yeah, we shouldn't let this devolve into a discussion over PAX "accuracy" :)
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Midnightsky

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #37 on: October 13, 2017, 05:30:11 PM »
Yeah, we shouldn't let this devolve into a discussion over PAX "accuracy" :)

Exactly, because nothing trumps my HS pax anyway :P well, except for maybe perhaps sometimes better drivers than me ;D
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sti-tom

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #38 on: November 16, 2017, 12:55:53 PM »
All those who voted 0.814 are winners. I was 0.002 high.

New PAX = 0.806 + (0.008 Adj) = 0.814

E6Cueman

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #39 on: November 16, 2017, 09:12:06 PM »
 ;D

Bitters

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #40 on: November 17, 2017, 07:52:52 AM »
All those who voted 0.814 are winners. I was 0.002 high.

New PAX = 0.806 + (0.008 Adj) = 0.814
\

That's assuming that using the entire group average pax change makes sense. But you could probably make an argument to measure a subset (ie: street class dropped by 0.006 on average and street touring by 0.007 on average).

Anyone guessing 0.812 to 0.814 was basically in the wheel house.

MurrayPeterson

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #41 on: November 19, 2017, 03:30:28 PM »
For next year's scoring group, I am assuming that the SSC class would be grouped with street touring classes.  Or would street classes be a better fit?
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94boosted

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #42 on: November 21, 2017, 09:10:21 AM »
For next year's scoring group, I am assuming that the SSC class would be grouped with street touring classes.  Or would street classes be a better fit?

I'd say street touring
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Reijo

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Re: SCCA creates new spec class for FR-S/BRZ between Street and ST
« Reply #43 on: November 21, 2017, 10:33:31 AM »
For next year's scoring group, I am assuming that the SSC class would be grouped with street touring classes.  Or would street classes be a better fit?

I'd say street touring

I'd say the same thing.  The suspension mods make more difference than HP and suspension-wise they are almost the same as ST and, hence, time-wise they would be quite close.

Reijo

 

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