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Race Prep Miata race-only chat. 949 Racing - Rim & tires

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Old 03-17-2015, 08:11 PM   #161
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Quote:
Originally Posted by EricJ View Post
I thought the Minimum weight was on the chart and we could declare a higher Minimum Competition Weight on the classing form if we wanted to.

My plan was to put in a MS-PNP and try to get 150 HP at 2,485 lbs for TTE points based classing.
16.5 base + .8 tires - .75 weight = 16.55 * 150 hp = 2,482 lbs.
Oh, Eric - I just noticed that your formula was off a bit for your power to weight calculation. Should be as follows: weight/power + mod factors > class limit

so 2482/150 +0.8 -0.75 = 16.60 (pretty close since your tire and weight mod factors about canceled each other out in this particular case)

To find whp, its:
whp limit = weight/(16.5 - mod factors)

2482/(16.5 -0.8 +0.75) = 150.88 whp
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Old 03-17-2015, 11:13 PM   #162
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Originally Posted by Rocklobster View Post
It's a grey area. I did this at nationals and it took some convincing for greg to allow it. It's of course only applicable to points classed cars.

It states in the rules that you CAN do this but according to Greg it's at the discretion of the class director.
Lolwut
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Old 03-18-2015, 12:33 AM   #163
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Originally Posted by jpreston View Post
Lolwut
Yeah, per the rules appendix for calculating your weight to power ratio, it uses 'competition weight' and defines competition weight as your measured weight, not the base weight listed on the classification form. So it sounds perfectly legal to me to ballast up on a points build, assuming you can make the hp for it to be worthwhile. As long as Greg is on board with it I guess..
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Old 03-18-2015, 01:23 AM   #164
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I should have deleted that first paragraph. I'm loling at this:

Quote:
Originally Posted by Rocklobster View Post
It states in the rules that you CAN do this but according to Greg it's at the discretion of the class director.
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Old 03-20-2015, 04:58 PM   #165
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Yeah the two nuances are basically. When classed on points, the question often comes up "Can I write whatever I want to in the Min Comp weight line on the classing form? And secondly, regardless of what I write there, for post race dyno/scale compliance check does it even matter, or does it only matter what I end up weighing in at?"

At Road Atlanta Greg wanted me to have a number on my form that would be used for both min weight compliance and the min adj W:P ratio. I couldn't just use whatever we weighed in at after the race...but he did allow me to write whatever i wanted on the classing form for min comp weight. Had to really nail the fuel load calc....because i needed to maximize my min comp weight for that MDE dyno.... normally i never even think about it because on all other dynos the fuel tank could be bone dry with a 10 year old in the driver seat and the car would still be over the adj min W:P ratio.
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Old 03-20-2015, 07:15 PM   #166
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The weight can be either the actual weigh in after the race OR the weight submitted on the form, at the series director's discretion.
P. 19 section 8.1.2:

The “Adjusted Weight/Power Ratio” is calculated using the actual chassis dynamometer maximum horsepower of the vehicle (rounded to the nearest whole number), the actual, measured post-race/qualifying minimum competition weight with driver (Or, at the discretion of the Series Director, the Minimum Competition Weight listed on the TT Car Classification Form if the vehicle was either not weighed in impound, or the Dyno inspection was done at a random time), and other factors such as body type, transmission type, tire type and size.
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Old 04-15-2015, 12:57 AM   #167
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Old 04-15-2015, 02:19 PM   #168
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Its interesting how much the shifter bellow seems to move as the speed increases/decreases. Tells you how much pressure is building up in the tunnel.
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Old 04-15-2015, 03:19 PM   #169
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Quote:
Originally Posted by circuitmstr74 View Post
Video from Roebling this past weekend:
I have wondered why that particular car, that we have so many parts on, spent maybe 150 emails, a dozen or phone calls, some on weekends and offline coaching on how to make it win, has not a single sticker or thank you anywhere. Video credits don't mention us. It's a Crusher clone down to the set up. Owner haggled trying to buy Crusher for about a month, then tried to buy parts off Crusher then asked to fly me out to Florida to tune his car instead. Frantic emails on Saturday from NASA championships on how to keep it from blowing the dyno saved his NASA west win.

I recall the state it was in when he first contacted me and how lost it was. I know that car wouldn't be winning anything without the small mountain of offline advice we gave. Over the years, I have given special support to a very select few customers. This owner received more detailed proprietary knowledge than any other race we have ever sold parts to. By far. And we seem to be persona non grata.
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Old 04-15-2015, 05:05 PM   #170
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No bueno.
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Old 04-15-2015, 05:53 PM   #171
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As long as we're posting lap records, here's TTD at MSR-Cresson from last month. And, I have a 949 sticker.

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Old 04-15-2015, 08:03 PM   #172
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Emilio,

I am sorry that you feel this way. My car is inspired by and built with a lot of the knowledge that you pioneered with these cars. This is true. I appreciate that and respect that very much.

I figured I had repaid most of that by spending many thousands of dollars with you.
To say I don't promote or advocate 949Racing is not true. I am an active advocate for your parts on these forums and at the tracks I visit and have mentioned 949 in articles and interviews multiple times. I believe in your parts and stand by them.

The truth is, with all due respect, is that I don't think you have ever really had a vested interest in my program. A lot of the time I receive one word responses that say "proprietary" or something along those lines. And that is fine, I understand and cant be mad at that. You have a business to protect.

For that reason my car is not as close to Crusher as you say. A lot of things are copied. A lot of things aren't. I run a completely different setup than what you have publicly advertised. Totally different alignment settings and spring rates.

The partners I have branded on my racecar and mentioned on my videos give me product and or money. Simple as that.

Again, I appreciate the knowledge you have given me. That's why I have spent the money with you to have all of your parts on my car and will continue too. I didn't realize you expected me to advertise for you as well. However, it isn't a problem. I will gladly throw some stickers on
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Old 04-15-2015, 08:06 PM   #173
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Dude...money's not enough.

You should be worshipping the ground
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Old 04-15-2015, 11:14 PM   #174
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Parts can be purchased from many sources. Parts don't win races by themselves. Information + parts does. You bought parts, I provided the info to piece it all together and win. For most folks, that's worth a sticker or at least a thank you.

I know the state of your car and program when you first contacted me. No one else here does.

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Dude...money's not enough.

You should be worshipping the ground
Nah, a few stickers or maybe a thank you.

Last edited by emilio700; 04-16-2015 at 12:38 AM.
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Old 04-15-2015, 11:34 PM   #175
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I'm rocking 949 stickers on my car AND slow cooker, and all I ever got were some endlinks.
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Old 04-16-2015, 12:32 AM   #176
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I'm not fast enough to warrant 949 stickers... I figure I'll just embarrass Emilio by representing his company withbmy slowly driven TTD car.

No proprietary information asked for or needed.
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Old 04-16-2015, 12:56 AM   #177
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Thank You! Officially and publicly
And I will throw on some stickers
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Old 05-13-2015, 09:54 AM   #178
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Trying to decipher the rules on FI and a points car. Do you always have to dyno reclass with adding FI to a car?

This is what is confusing:
FORCED INDUCTION VEHICLES will add an additional five (+5) points to the total
number of Modification Points to determine the final competition class. (Forced induction
vehicles that have been classed or re-classed by the National TT Director based on Dyno
testing are exempt from this additional five (+5) point assessment.)


Surely this doesn't mean it's only 5 points to add FI to a car?
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Old 05-13-2015, 10:02 AM   #179
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FI is always a dyno reclass on cars that didn't come OEM with FI.

The +5 is for factory turbo cars.
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Old 05-13-2015, 10:20 AM   #180
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Quote:
Originally Posted by Efini~FC3S View Post
FI is always a dyno reclass on cars that didn't come OEM with FI.

The +5 is for factory turbo cars.
That's what I was figuring, thanks for the confirmation!

I had a shower thought this morning......

Rotrex for TTC? I believe a fella down in FL did a rotrex setup and performed pretty well, at least on the east coast.

~13:1 ratio @ 2400lbs = 180ish rwhp(too optimistic?). I'm wondering how many points Greg would give at something like that though.

Last edited by flier129; 05-13-2015 at 01:23 PM.
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