Nasa tt5
12-11-2017, 04:58 AM
#71
Community Organizer
12-11-2017, 06:20 AM
#72
Community Organizer
12-11-2017, 08:40 AM
#73
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Join Date: Jan 2017
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Updated link to the updated rules:
https://nasa-assets.s3.amazonaws.com...--12-10-17.pdf
Only major change is the 100TW change. Just a couple other little things in there that shouldn't affect us.
https://nasa-assets.s3.amazonaws.com...--12-10-17.pdf
Only major change is the 100TW change. Just a couple other little things in there that shouldn't affect us.
12-11-2017, 03:26 PM
#74
Updated link to the updated rules:
https://nasa-assets.s3.amazonaws.com...--12-10-17.pdf
Only major change is the 100TW change. Just a couple other little things in there that shouldn't affect us.
https://nasa-assets.s3.amazonaws.com...--12-10-17.pdf
Only major change is the 100TW change. Just a couple other little things in there that shouldn't affect us.
12-21-2017, 10:19 AM
#76
Join Date: Jul 2014
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Hey Guys,
Probably a stupid question...can ballast be added in the passenger seat and held in place by harness? I'm thinking of a simplifled weighted crash test dummy. I don't want to swiss cheese my car body for all the bolts that 150 lbs of ballast will require.
Thanks!
Probably a stupid question...can ballast be added in the passenger seat and held in place by harness? I'm thinking of a simplifled weighted crash test dummy. I don't want to swiss cheese my car body for all the bolts that 150 lbs of ballast will require.
Thanks!
12-21-2017, 10:48 AM
#77
Thread Starter
Hey Guys,
Probably a stupid question...can ballast be added in the passenger seat and held in place by harness? I'm thinking of a simplifled weighted crash test dummy. I don't want to swiss cheese my car body for all the bolts that 150 lbs of ballast will require.
Thanks!
Probably a stupid question...can ballast be added in the passenger seat and held in place by harness? I'm thinking of a simplifled weighted crash test dummy. I don't want to swiss cheese my car body for all the bolts that 150 lbs of ballast will require.
Thanks!
15.20 Ballast All ballast shall be solid metal such as steel, lead, or depleted uranium, and consist of a minimum of five (5) pounds per piece. Each piece shall be bolted in place with through-bolts, fender washers, and a locking-nut / system (e.g. jam-nuts, Nylock, etc.). All ballast shall be secured sufficiently and all bolts shall be of Grade five (5). Nylock nuts or metal crimping lock nuts should not be reused.
01-20-2019, 11:13 AM
#78
Im looking to get into TT5 this year, perhaps not right away seeing as Im still in DE3. But basically after reading the rules and the posts in here, I just want to make sure Im on the right track before I start purchasing items for the car. Ive got a set of 17x9 square wheels that I was going to get some 245/40/17 R7's for, but some have mentioned that you dont need anything over 225s? I figured more contact patch would mean more grip, but I will take your word for it. Am I correct in assuming since my car has stock aero and when I add a rear wing it basically zero's out the 0.4 points for stock aero? Its looking like all my car needs is some Ohlins, a rear wing and some Hoosiers to be competitive, I take it that puts it close to the 14:1 ratio assuming my power is similar and the car probably weighs a little over 3000 with me in it.
The only bad thing about doing this is I dont see a lot of people running TT5, but I certainly dont have the funds to compete in any other class.
The only bad thing about doing this is I dont see a lot of people running TT5, but I certainly dont have the funds to compete in any other class.
01-20-2019, 05:19 PM
#79
Im looking to get into TT5 this year, perhaps not right away seeing as Im still in DE3. But basically after reading the rules and the posts in here, I just want to make sure Im on the right track before I start purchasing items for the car. Ive got a set of 17x9 square wheels that I was going to get some 245/40/17 R7's for, but some have mentioned that you dont need anything over 225s? I figured more contact patch would mean more grip, but I will take your word for it. Am I correct in assuming since my car has stock aero and when I add a rear wing it basically zero's out the 0.4 points for stock aero? Its looking like all my car needs is some Ohlins, a rear wing and some Hoosiers to be competitive, I take it that puts it close to the 14:1 ratio assuming my power is similar and the car probably weighs a little over 3000 with me in it.
The only bad thing about doing this is I dont see a lot of people running TT5, but I certainly dont have the funds to compete in any other class.
The only bad thing about doing this is I dont see a lot of people running TT5, but I certainly dont have the funds to compete in any other class.
01-20-2019, 05:31 PM
#80
Im looking to get into TT5 this year, perhaps not right away seeing as Im still in DE3. But basically after reading the rules and the posts in here, I just want to make sure Im on the right track before I start purchasing items for the car. Ive got a set of 17x9 square wheels that I was going to get some 245/40/17 R7's for, but some have mentioned that you dont need anything over 225s? I figured more contact patch would mean more grip, but I will take your word for it. Am I correct in assuming since my car has stock aero and when I add a rear wing it basically zero's out the 0.4 points for stock aero? Its looking like all my car needs is some Ohlins, a rear wing and some Hoosiers to be competitive, I take it that puts it close to the 14:1 ratio assuming my power is similar and the car probably weighs a little over 3000 with me in it.
The only bad thing about doing this is I dont see a lot of people running TT5, but I certainly dont have the funds to compete in any other class.
The only bad thing about doing this is I dont see a lot of people running TT5, but I certainly dont have the funds to compete in any other class.
Last year was the first year for TT5. It grew quickly towards the end of the season. Next year we have 18 cars in the NASA Mid-Atlantic region alone. The class will be huge.
If you do the rear wing only, you can not take the BTM aero mod factor.
Regarding Hoosiers, the 245 R7 will fit on a 17x9 max but is to wide on anything bigger then a 9". You can run the 225 Hoosier on up to a 10" wide wheel. I run both setups and have not come to a conclusion on what is faster. If you have 9" wheels, go with a 245.
The S2000 is technically a 14.7 P/W ratio to start because of the .7 factor for A Arms. You can base your P/W on your average HP. A good rule of thumb on an S2000 is that you average HP is usually about 15WHP less than peak. So on a typical AP2 with 215WHP peak and 200WHP average, you would need to come in. at. 2940lbs. If you have a BBK add .2 to the P/W. If you have roll center adjusters, toe arms, etc, that is another .2.
My build thread in my sig has alot of little tidbits about the car.