- Will someone please check my maths; I've been running running DE and open lap days and recently made the jump to TT
- According to the NASA TT Calculator:
- -0.7 Control arms
- -0.4 NonOEM Hard Top (roof line modification; I have a mugen replica)
- -0.2 non-oem BBK (bought a few years ago, c43; cheaper over long run)
- Is this accurate? Why the 0.7 on the control arms seems harsh.
- In addition, the point 0.2 suspension/camber mods would accomplish the same yet this is only 0.2.
- Does the 0.7 apply to "multi-link" rear car set-ups with struts in the front ("upper “A-arm” or “wishbone” type control arms (front or rear)")?
- Does someone at NASA hate the s2000?
- With a roll-bar and passenger seat removed I'm about ~ 189 HP; Im sure has hell not adding weight. Im thinking of capping the revs
- What are you other guys doing. This car is driven to the track ( I dont a truck and trailer)

 

- .7 applies to cars with strut front and multi link rears like the FT86 cars as well as A arm cars.
- Don't cap revs, you need them.
- The .7 A arm penalty is currently working well to balance out the class.
- The .2 suspension/camber mods doesn't address the design difference between an a-arm car and otherwise.
- Sounds like you are is .7 (A-Arms), .4 (hardtop), .2 (BBK). If 189 is you peak, assume your average will be around 179, you can come in at 2738. If 189 is your average, you will be at 2891. 2891 can easily achieved with adding some weight to the spare tire tire or put your passenger seat back in. 50lbs changes in weight have no real effect in your track time.

 

Auric, have you considered replacing the replica Mugen-style hardtop with an OEM-style one? If you do that and aren't running a wing and/or splitter or other aero mod, you'd be able to claim the BTM aero credit.

As Sickday Racing pointed out, the S2000s can be pretty competitive in TT5.

 

Check sickdayracing's signature for his first build.
https://www.s2ki.com/forums/automoti...build-1178108/

 

Regarding driving to the track, a TT5 S2000 is a very mild build. The only things you need are a hardtop, wing, offset bushings, wheels/tires and good coilovers. Nice to have things are adjustable sway bars, oil cooler, and a big brake kit (not needed but helps with consumables).

A car like this can easily be driven to the track. Your target weight should be 2850-3000lbs depending power level. This is easily achievable with an S2000 with a roll bar. My red car retained A/C, radio, and full interior when it had a roll bar and I kept that stuff even when I did the cage. Ultimately I removed it for simplicity because once it was caged I was no longer interested in driving it on the street. In my region, pretty much everyone trailers their car, even if their cars are completely streetable.