ST4/TT4 2017
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From: Fort Walton Beach, FL
Using the ST calculator I found the only adjustment modifications that would probably apply to most of us is +.7 for smaller than 245 tires and -.1 or -.2 for under a 3000 or 2600. If I'm understanding this correctly, to get close to 12:1 for TT4 you would need 205hp and 2360lbs. or 210hp and 2420. So basically weights unobtainable by most S2000s.
TTC would make sense, but if we're all getting 12.86:1 dyno reclass, how are we supposed to get to a minimum of 14.5:1? Will we all be reclassed to 14.5 without modification factors? (I'm asking on nasaforums).
TTC would make sense, but if we're all getting 12.86:1 dyno reclass, how are we supposed to get to a minimum of 14.5:1? Will we all be reclassed to 14.5 without modification factors? (I'm asking on nasaforums).
Joined: Nov 2004
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From: Second City
Originally Posted by patinum' timestamp='1473973278' post='24062917
Using the ST calculator I found the only adjustment modifications that would probably apply to most of us is +.7 for smaller than 245 tires and -.1 or -.2 for under a 3000 or 2600. If I'm understanding this correctly, to get close to 12:1 for TT4 you would need 205hp and 2360lbs. or 210hp and 2420. So basically weights unobtainable by most S2000s.
TTC would make sense, but if we're all getting 12.86:1 dyno reclass, how are we supposed to get to a minimum of 14.5:1? Will we all be reclassed to 14.5 without modification factors? (I'm asking on nasaforums).
TTC would make sense, but if we're all getting 12.86:1 dyno reclass, how are we supposed to get to a minimum of 14.5:1? Will we all be reclassed to 14.5 without modification factors? (I'm asking on nasaforums).
Still thinking about it, but TT5 probably won't exist until 2018.
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Joined: Jul 2014
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From: Fort Walton Beach, FL
Originally Posted by King Tut' timestamp='1473974231' post='24062932
[quote name='patinum' timestamp='1473973278' post='24062917']
Using the ST calculator I found the only adjustment modifications that would probably apply to most of us is +.7 for smaller than 245 tires and -.1 or -.2 for under a 3000 or 2600. If I'm understanding this correctly, to get close to 12:1 for TT4 you would need 205hp and 2360lbs. or 210hp and 2420. So basically weights unobtainable by most S2000s.
TTC would make sense, but if we're all getting 12.86:1 dyno reclass, how are we supposed to get to a minimum of 14.5:1? Will we all be reclassed to 14.5 without modification factors? (I'm asking on nasaforums).
Using the ST calculator I found the only adjustment modifications that would probably apply to most of us is +.7 for smaller than 245 tires and -.1 or -.2 for under a 3000 or 2600. If I'm understanding this correctly, to get close to 12:1 for TT4 you would need 205hp and 2360lbs. or 210hp and 2420. So basically weights unobtainable by most S2000s.
TTC would make sense, but if we're all getting 12.86:1 dyno reclass, how are we supposed to get to a minimum of 14.5:1? Will we all be reclassed to 14.5 without modification factors? (I'm asking on nasaforums).
Still thinking about it, but TT5 probably won't exist until 2018.
[/quote]
Yep, but you can still win TTC next year even if you won't be setting new track records. Start stacking Hoosiers for TT5 in 2017.
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TTC will go unchanged for next year. I got a pretty strong "no chance" for tt5 coming on next year as well today. It won't be until 2018.I think rolling out classes one by one is absurd and leaves a lot of people hanging. Hold on to your class for one more year, no we won't let you know what the rules will be so you can prep for the following season, etc.
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From: Fort Walton Beach, FL
Originally Posted by patinum' timestamp='1473975669' post='24062948
Will the 14.5 rule exist next year or only when it's officially TT5?
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For those of you that dont browse the NASA forums much this is what I posted with Greg's response. Looks like TT5 is going to be super restricted so all of us will more than likely fall into TT4. Let the spending begin!
The hardest part of this rule change roll out with one class at a time for me, and I am curious if others are in the same situation, is that I have started to build a TTB car that now will not be competitive in TT4 as I cant get to the power to weight with out a large cost increase. With the purposed TT5 PTW the car will fit perfect with some ballast but I cant step down to TTC for its last year due to points.. So I am basically in a situation that I sit with the car on jackstands not knowing what will or will not have a modification factor to it as far as aero and other mods till the rules for TT5 come out in late 2017. I am sure I am not the only one that is in this spot, when its all rolled out I think it will be great with possible larger fields and closer competition but the one by one roll out is putting people stuck between classes or ineligible for the one below.
We announced this many moons ago! This has been in the works for over a year now. If you were building for TTB, then the car should be good for ST4/TT4. If you look at the other forum thread that we have had for almost a year, currently, the plan would be for the next lower Dyno based class to have some aspect of car model included. It would not be an "open" class like ST1-4. Some models would be sent directly to ST4/TT4, or have such a high Mod Factor associated with them, that they functionally would if they were prepped for competition correctly. I would expect that the limit on Adjusted Wt/HP Ratio will be around that 14.5:1 region (maybe 15:1?), but with the added Mod Factors for Make/Model, you are correct that until we have that worked out, we won't know exactly which cars don't move to ST4/TT4. But, I would expect that just about all cars legal for PTD/TTD would be okay. I would expect that Most cars that are currently legal for PTC/TTC and make the 14.5:1 would be okay, with a few exceptions. I would expect that AWD cars, FR-S's, BRZ's, M3's, S2000's, to all have higher Mod Factors, pushing the ones currently in PTC toward ST4, but likely with those in PTD to stay in the lower classes. Still a work in progress....
We announced this many moons ago! This has been in the works for over a year now. If you were building for TTB, then the car should be good for ST4/TT4. If you look at the other forum thread that we have had for almost a year, currently, the plan would be for the next lower Dyno based class to have some aspect of car model included. It would not be an "open" class like ST1-4. Some models would be sent directly to ST4/TT4, or have such a high Mod Factor associated with them, that they functionally would if they were prepped for competition correctly. I would expect that the limit on Adjusted Wt/HP Ratio will be around that 14.5:1 region (maybe 15:1?), but with the added Mod Factors for Make/Model, you are correct that until we have that worked out, we won't know exactly which cars don't move to ST4/TT4. But, I would expect that just about all cars legal for PTD/TTD would be okay. I would expect that Most cars that are currently legal for PTC/TTC and make the 14.5:1 would be okay, with a few exceptions. I would expect that AWD cars, FR-S's, BRZ's, M3's, S2000's, to all have higher Mod Factors, pushing the ones currently in PTC toward ST4, but likely with those in PTD to stay in the lower classes. Still a work in progress....
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From: Worcester, MA
This puts me out of PTC and into ST4. I currently run at 2670 (75lbs ballast) with 205whp. I'd have to add almost 300lbs of ballast (not happening) to stay in PTC at 14.5:1.
Do we know what the mod factors are going to be for ST4? No way I can get my S2000 down to 2460lbs w/driver to make 12:1. If they do the same +.7 for 245 DOTs and -.2 for a 2599-2200lb car then I'm at 2583lbs which would work, but I don't see it going that way.
Do we know what the mod factors are going to be for ST4? No way I can get my S2000 down to 2460lbs w/driver to make 12:1. If they do the same +.7 for 245 DOTs and -.2 for a 2599-2200lb car then I'm at 2583lbs which would work, but I don't see it going that way.