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Possible for a 1.6 to be competitive in PTF/TTF with manly driving?

Old Jul 19, 2013 | 04:51 PM
  #21  
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Originally Posted by jpreston
I liked them for a track like Mid-Ohio with 3 huge straights.
lolz @ 3 huge straights?

Where are the other 2?
Old Jul 19, 2013 | 05:27 PM
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Originally Posted by Efini~FC3S
lolz @ 3 huge straights?

Where are the other 2?
in a 1.6, I would argue there are 10 straights !!!
Old Jul 19, 2013 | 05:28 PM
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btw, how fast is the winning PTF/TTF car compared to a SM ? or PTE/TTE ? at National.

Points will be moot. If ptf/ttf is only say 1 second slower than PTE

Last edited by bellwilliam; Jul 19, 2013 at 09:36 PM.
Old Jul 20, 2013 | 12:57 AM
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Originally Posted by Efini~FC3S
lolz @ 3 huge straights?

Where are the other 2?
lol. Yeah... pretty much what william said. With 125hp, I definitely consider the pro course to have 3 long straights!
Old Jul 23, 2013 | 11:46 AM
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Just to ad to this... I did a very silly thing and ran skinny little STREET tires size 175s so I could downclass my 95 1.8 Spec Miata to be in PTF to get the PTF regional points for a weekend. It was horrible and I won't be doing that again unless it was the only way I could get points for my class. The problem with the little 175s was braking and cornering (pretty much what you need tires most for). I had to play this timid braking game to be able to actually stop and the turns.. well, it made my Miata feel more like a Mustang (haha). I was 10 to 12 seconds off the pace of properly tired Toyo RR 205 spec miatas. I did have lots of point and laughs as I did the weekend on donuts though!


Funny little side story though... Once upon a time there was this guy with a 2003 Miata who 'downclassed' to TTF with his tire size and he (at one time) held almost all the TTF records for the Midwest and Great Lakes regions but a 4 door FWD Infiniti G20 sedan got rid of almost all his records (usually by 5 to 7 seconds actually). His only 'standing' record right now in TTF is a track NASA Midwest has not returned to (and will not return to I'm told) so we simply didn't get the opportunity to take away that record... lol
Old Jul 24, 2013 | 03:06 AM
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I didn't know you can downgrade a class. How does that work?
Old Jul 24, 2013 | 07:02 AM
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^ It is pretty simple. You get points back (subtract points) when you downgrade the tire size and using a street tire means no + points. Needless to say, you get a lot of points to subtract using 175s
Old Jul 24, 2013 | 11:30 AM
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Originally Posted by chris101
^ It is pretty simple. You get points back (subtract points) when you downgrade the tire size and using a street tire means no + points. Needless to say, you get a lot of points to subtract using 175s
I'm pretty sure you can't run below your normal base class without getting a dyno reclass.
Old Jul 24, 2013 | 12:06 PM
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Originally Posted by Savington
I'm pretty sure you can't run below your normal base class without getting a dyno reclass.
^ Incorrect. You might want to read the PT rules again and take a look at the top of page 18 where it clearly talks about tire points. (including how you can add or subtract points)


http://www.nasaproracing.com/rules/p...ring_rules.pdf

Tire width points assessed or points credited are determined by the difference between the
width of the largest tire on the vehicle and the assigned base tire size as follows:
Equal to or greater than: 10mm +1, 20mm +4, 30mm +7, 40mm +10, 50mm +13,
60mm +16, 70mm +19, 80mm +22, 90mm +25, 100mm +28, 110mm +31, 120mm +34, etc.
Equal to or less than: -10mm -1, -20mm -4, -30mm -7, -40mm -10, -50mm -13, -60mm -16,
-70mm -19, -80mm -22, -90mm -25, -100mm -28, -110mm -31, -120mm -34, etc.
Old Jul 24, 2013 | 12:10 PM
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Originally Posted by chris101
^ Incorrect. You might want to read the PT rules again and take a look at the top of page 18 where it clearly talks about tire points. (including how you can add or subtract points)

http://www.nasaproracing.com/rules/p...ring_rules.pdf

Tire width points assessed or points credited are determined by the difference between the
width of the largest tire on the vehicle and the assigned base tire size as follows:
Equal to or greater than: 10mm +1, 20mm +4, 30mm +7, 40mm +10, 50mm +13,
60mm +16, 70mm +19, 80mm +22, 90mm +25, 100mm +28, 110mm +31, 120mm +34, etc.
Equal to or less than: -10mm -1, -20mm -4, -30mm -7, -40mm -10, -50mm -13, -60mm -16,
-70mm -19, -80mm -22, -90mm -25, -100mm -28, -110mm -31, -120mm -34, etc.
lol @ thinking Al-Queda sympathizer Greenbaum will let this happen.
Old Jul 24, 2013 | 12:11 PM
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Originally Posted by chris101
^ Incorrect. You might want to read the PT rules again and take a look at the top of page 18 where it clearly talks about tire points. (including how you can add or subtract points)

Dude is hard as ****.
Old Jul 24, 2013 | 12:12 PM
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Keep in mind the skinnier tires typically won't help you anyway (they certainly showed me how ill-handling a Miata can be being so far off the pace!)

I can assure you the miata on 175 street tires was far from competitive in PTF (and not much fun to drive either)
Old Jul 24, 2013 | 12:13 PM
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Originally Posted by chris101
^ Incorrect. You might want to read the PT rules again and take a look at the top of page 18 where it clearly talks about tire points. (including how you can add or subtract points)

Keep in mind the skinnier tires typically won't help you anyway (they certainly showed me how ill-handling a Miata can be being so far off the pace!)

http://www.nasaproracing.com/rules/p...ring_rules.pdf
Trust me when I say that I'm well versed in the PT rulebook. I'm quite aware of the way tire points work, but what I'm saying is that I don't you can't drop below your base class by running a skinny tire. If a 1.6L PTF** Miata were to run a 205mm wire, he would get 1 point back, but if a 1.8L PTE Miata were to run a 225mm wide tire, I strongly doubt Greg would allow it to run PTF as a 19pt car without a dyno reclass.
Old Jul 24, 2013 | 12:14 PM
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Originally Posted by chris101
Keep in mind the skinnier tires typically won't help you anyway (they certainly showed me how ill-handling a Miata can be being so far off the pace!)

I can assure you the miata on 175 street tires was far from competitive in PTF (and not much fun to drive either)
crybabyshit.txt
Old Jul 24, 2013 | 12:15 PM
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Originally Posted by Savington
Trust me when I say that I'm well versed in the PT rulebook. I'm quite aware of the way tire points work, but what I'm saying is that I don't you can't drop below your base class by running a skinny tire. If a 1.6L PTF** Miata were to run a 205mm wire, he would get 1 point back, but if a 1.8L PTE Miata were to run a 225mm wide tire, I strongly doubt Greg would allow it to run PTF as a 19pt car.
I strongly doubt you're aware my dangling majesty is currently engorged.
Old Jul 24, 2013 | 12:27 PM
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seems like a lot of testosterone here boys

FYI Tidbit: That 2003 Miata I told you about that 'downclassed' to F class by tire size participated at NASA Nationals with that car in the past (2 different years actually I believe but I'd have to look it up to make sure) <-- It was as a TTF car though (not PTF)


Edit: ...just checked (looked it up)

Bill participated at NASA Nationals in TTF with his 2003 Miata back in 2006 and 2007 (he was also the TT Group Leader for NASA Greatlakes and Midwest at that time IIRC)
Old Jul 24, 2013 | 12:41 PM
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..and um guys, you might want to take a look at what Greg himself said about it:

"It is permitted, and rarely happens. You must still be compliant with the limit on Adjusted Wt/Hp ratio for that class. Since the only credit points are for tire size, it means that you are running on smaller tires, probably street tires, and have little or no mods to the vehicle otherwise."

nasaforums.com &bull; View topic - UP-classing (or down?)
Old Jul 24, 2013 | 01:02 PM
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Originally Posted by chris101
..and um guys, you might want to take a look at what Greg himself said about it:

"It is permitted, and rarely happens. You must still be compliant with the limit on Adjusted Wt/Hp ratio for that class. Since the only credit points are for tire size, it means that you are running on smaller tires, probably street tires, and have little or no mods to the vehicle otherwise."

nasaforums.com &bull; View topic - UP-classing (or down?)
Color me shocked.
Old Jul 24, 2013 | 01:06 PM
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Originally Posted by bellwilliam
btw, how fast is the winning PTF/TTF car compared to a SM ? or PTE/TTE ? at National.

Points will be moot. If ptf/ttf is only say 1 second slower than PTE

For MIDO-->

1995 Infiniti G20 at 2011 NASA Nationals set the new TTF track record with a 1:46.345

Meanwhile, in 2012, the PTF track record (and 2nd place finisher) was (1:47.130) for PTF by Walter Carlos in an Rx7 (g20 was 1st place but slower lap time)


Meanwhile, SM fastest lap time in 2012 at MidO was a 1:43 and PTE was 1:41.684 in a Honda CRX


^ bottom line is I highly doubt a PTF/TTF Miata will be as competitive
Old Jul 24, 2013 | 01:07 PM
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Originally Posted by Savington
Color me shocked.


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