Adventures in PTE/TTE
#363
I fucked up my points transferring from D to E. Same setup puts me 22 points with TTE* vs 19 for TTD*, assuming my base tire is in fact 235 for TTE* (still waiting on word from Greg).
I need to shave one point to be TTE legal. Right now the set up is:
*- 7 points
205 R7s (two heat cycles, fresh)- 3 points
4.1 Torsen (no Giken budget)- 3 points
Dampers- 3 points
Springs- 2 points
Roll bars- 2 points
949 11.75" front brakes and m-tuned 11" rear brakes- 2 points
=22 points
My springs are 12/7kg/mm, should probably be stiffer. I have a 4.3 open diff sitting in a carrier in my garage. I'm thinking of swapping that in and keeping my sway points and brake points. I know my stock brakes would be fine, but I'm short on prep time and it seems easier to swap carriers than do all that other stuff, plus sways are kind of important with my spring set up.
Last edited by dasting; 06-24-2015 at 01:04 PM.
#364
It's an NA, and oh yes, it suffers from typical NA bump steer woes. This is for Lime Rock, track and curbing are decently smooth. If WGI was going to be open again this season, I'd address that.
I fucked up my points transferring from D to E. Same setup puts me 22 points with TTE* vs 19 for TTD*, assuming my base tire is in fact 235 for TTE* (still waiting on word from Greg).
I need to shave one point to be TTE legal. Right now the set up is:
*- 7 points
205 R7s (two heat cycles, fresh)- 3 points
4.1 Torsen (no Giken budget)- 3 points
Dampers- 3 points
Springs- 2 points
Roll bars- 2 points
949 11.75" front brakes and m-tuned 11" rear brakes- 2 points
=22 points
My springs are 12/7kg/mm, should probably be stiffer. I have a 4.3 open diff sitting in a carrier in my garage. I'm thinking of swapping that in and keeping my sway points and brake points. I know my stock brakes would be fine, but I'm short on prep time and it seems easier to swap carriers than do all that other stuff, plus sways are kind of important with my spring set up.
I fucked up my points transferring from D to E. Same setup puts me 22 points with TTE* vs 19 for TTD*, assuming my base tire is in fact 235 for TTE* (still waiting on word from Greg).
I need to shave one point to be TTE legal. Right now the set up is:
*- 7 points
205 R7s (two heat cycles, fresh)- 3 points
4.1 Torsen (no Giken budget)- 3 points
Dampers- 3 points
Springs- 2 points
Roll bars- 2 points
949 11.75" front brakes and m-tuned 11" rear brakes- 2 points
=22 points
My springs are 12/7kg/mm, should probably be stiffer. I have a 4.3 open diff sitting in a carrier in my garage. I'm thinking of swapping that in and keeping my sway points and brake points. I know my stock brakes would be fine, but I'm short on prep time and it seems easier to swap carriers than do all that other stuff, plus sways are kind of important with my spring set up.
#365
If you have points for sway bars, it makes for a car that's more versatile, easier to drive and setup. But a stock sway bar setup can be fast too. Lots of front spring (900-1100) and about the same rear. Our fastest ever PTE car (2013 rules) ran stock NB bars and 1000/400#.
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#366
^I agree with both of you, stiffer springs and stock brakes are the better option, but different springs aren't an option for next weekend. I won't have time to get them or install them.
I'm asking what will be faster on a 60 second, relatively smooth track (Lime Rock Park) using R7s:
Option #1- stock sways with current springs (670/390) plus 4.1 Torsen diff
Option #2- 1.125" Race front sway with current springs plus 4.3 open
I need to either ditch my brakes and my sway bars or just my LSD.
I'm asking what will be faster on a 60 second, relatively smooth track (Lime Rock Park) using R7s:
Option #1- stock sways with current springs (670/390) plus 4.1 Torsen diff
Option #2- 1.125" Race front sway with current springs plus 4.3 open
I need to either ditch my brakes and my sway bars or just my LSD.
#367
^I agree with both of you, stiffer springs and stock brakes are the better option, but different springs aren't an option for next weekend. I won't have time to get them or install them.
I'm asking what will be faster on a 60 second, relatively smooth track (Lime Rock Park) using R7s:
Option #1- stock sways with current springs (670/390) plus 4.1 Torsen diff
Option #2- 1.125" Race front sway with current springs plus 4.3 open
I need to either ditch my brakes and my sway bars or just my LSD.
I'm asking what will be faster on a 60 second, relatively smooth track (Lime Rock Park) using R7s:
Option #1- stock sways with current springs (670/390) plus 4.1 Torsen diff
Option #2- 1.125" Race front sway with current springs plus 4.3 open
I need to either ditch my brakes and my sway bars or just my LSD.
Gearing wins. Better yet, Kia Sportage 4.77 # 0K014-27-110
Don't underestimate the value of gearing, particularly if you don't have a Kansas relief map powerband.
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#369
Diff is a different question. I won 2012 NASA nationals at Mid Ohio with an MSM Torsen (classed as an MSM). It sucked. In my video you can hear lots of wheel spin. Tuned OSG would have been worth probably .5s there. Some tracks it can be .7s.
Ideally you have both a tuned OSG (not default OSG tuning) and either 4.77 or 4.875. On some tracks, such a diff is worth well over 1s.
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#374
How to win in PTE:
4a. Dyno class cars, request PTE* base classing and use the +7 to add power and hope that nobody in your region was smart enough to start with an NB1 in the first place
5. Read the zero-point mods section, and do them all. Then read it again and do some more of them
You are doing it wrong if:
-you take points for aero
-your car weighs less than 2400lbs (2500lbs? 2600lbs?)
-you can points-class your car and you are dyno-classed
4a. Dyno class cars, request PTE* base classing and use the +7 to add power and hope that nobody in your region was smart enough to start with an NB1 in the first place
5. Read the zero-point mods section, and do them all. Then read it again and do some more of them
You are doing it wrong if:
-you take points for aero
-your car weighs less than 2400lbs (2500lbs? 2600lbs?)
-you can points-class your car and you are dyno-classed
tte/pte base is 130whp/2400lbs
Ok so no aero, bulk up, not sure what is meant by the points reclass/dyno reclass.
Finally anyone know where I can peak through the freebee points section?
#378
What do you want us to do, go to the rulebook for you and copy/paste the entire free points section?
It's right here:
https://nasaproracing.com/rules