ITR Multiplier? ??

[StephenB]

Since ITR pretty much started during the most recent ITAC I was wondering if any of you may have the multipliers and formulas for ITR.

thanks,
Stephen

[Gary L]

See post #49 in the "....Chairman resigns" thread.

[erlrich]

IT-build HP (someone said that most ITR cars got 30% for expected gain) * 11.25

[StephenB]

IT-build HP (someone said that most ITR cars got 30% for expected gain) * 11.25

This is what I saw as a norm as well however I found something that implied the ITAC recommended the s2000 with only a 15% gain. So I will reword my question... what are the power gains that the ITAC used for each ITR car that they classified? This should be well documented based on recent posts about transparency...

Gary thanks for the link, that is part of what I need, I do understand the process and know I am looking for the rational and transparency part... I have a little homework to do: )

Stephen

[Ron Earp]

That are the power gains that the ITAC used for each ITR car that they classified?

Pretty easy to back calculate using the assigned weights. Slap'em in a spreadsheet and you can get all the power multipliers pretty easily.

[StephenB]

Pretty easy to back calculate using the assigned weights. Slap'em in a spreadsheet and you can get all the power multipliers pretty easily.

Ron... great idea, but that will only get me close to understanding the power gains I need to research the power gain goals...

So step 7 we get a 6% reduction for FWD
Does step 8 apply to ITR?
And step 9 seems like it could go all over the place... if any ITAC member (current or retired) is lurking feel free to share your knowledge!

I would love it if anyone on the ITAC could just share the spreadsheets... some cliff notes perhaps

Thanks again,
Stephen

[GKR_17]

The original proposal was in the July 2006 Fastrack. Here are the numbers as I know them, correct me if there are any errors:

15%:
Honda S2000
Porsche 968
Mazda Rx-8 (as originally classed, dropped 130lbs with no explaination in Dec 2009)

20%:
Acura Intergra Type-R
Ford Taurus SHO
Porsche 944S2

25%
Acura Legend, RSX-S
BMW E30 M3
Chevy Camero
Dodge Stealth
Ford Contour SVT, Mustang
Honda Prelude
Mitsubishi 3000GT
Nissan Maxima
Pontiac Firebird
Porsche Boxter, 911, 911S, 911SC
Toyota Celica GTS

30%:
BMW 6 cylinders (325, 328, 330, 635, Z3, Z4)
Lexus IS300, SC300
Nissan 300ZX
Toyota Supra

[Knestis]

The original proposal was in the July 2006 Fastrack. Here are the numbers as I know them, correct me if there are any errors:

15%:
Honda S2000
Porsche 968
Mazda Rx-8 (as originally classed, dropped 130lbs with no explaination in Dec 2009) ...

That's when the checks from Mazda cleared.

The RX8 is something of a case study in both why the limited subjective decision-making of "version 2" of the Process is important, and how it was designed to work - at least as far as the ITAC's recommendation was concerned. We looked at a lot of information and were confident - collectively confident, by a documented individual roll-call system - in the multiplier used and the ultimate weight specification.

It's just a shame that there was no system in place to communicate to the membership how the checks and balances are intended to work. I'm *positive* that someone (read, "the competition") is always going want any car's given race weight higher than it is, but maybe if y'all had some confidence that I WAS joking about the fat check, you'd be able to accept that the ITAC was making recommendations equitably - and that the CRB was implementing them with the fidelity.

K