Rotary Engine Eligibility for Super Touring Light

[StephenB]

Can I run in any st class as a world challenge car? That way I dont have to add a fuel cell? Needing a fuel cell eliminates any RX8 from ever participating.

[Greg Amy]

and a roll cage dash bar, correct?

Among other likely things, yes. You've looked through the regs; is there anything else you can think of, Glenn?

Can I run in any st class as a world challenge car?

Right now we're only classifying 2009-and-prior spec World Challenge Touring cars into STU. Each has to be explicitly allowed upon request. Send us the specs and the VTS and we can do that.

If your car is later than 2009-spec, send in a request anyway and we'll consider it. Don't forget that VTS... - GA

Needing a fuel cell eliminates any RX8 from ever participating.

Does the RX-8 have the fuel tank in front of the rear axle? Then it's fine. The first-gen RX-7 has the fuel tank hanging out back, so to put a Renesis into a first-gen RX-7 it'll need a cell.

GA

[Dano77]

Hi Greg, Sorry to be a pain in this one

You dont need to add the RWD adder to rotary cars in STL as its specifically said that the 12a is 2280, The 13b is 2600 and the Renisis is 3000.

Sorry

Dan

[Greg Amy]

You dont need to add the RWD adder to rotary cars in STL as its specifically said that the 12a is 2280, The 13b is 2600 and the Renisis is 3000.

You're mistaken Dan. First, the base weights for the 12A, 13B, and Renesis are 2225, 2615, and 3000 respectively. Second, those are base weights for the engine installed, ignoring the chassis it's installed into. Same goes for the piston engine table/weights: piston engined cars get a weight based on displacement. Once you've chosen your base engine - and thus, the base weight - chassis-specific weight requirements/allowances apply over and above that base weight, such as -2.5% for strut-type FWD and +2.5% for RWD.

For example, if you choose to use a 1.8L piston engine, your base weight is 2430. If you install that into a RWD chassis (e.g., Mazda Miata) you add 2.5% for a total of 2491; if you install that engine into a strut-type FWD chassis (e.g. Mazda GLC) you subtract 2.5% for a total of 2369.

Same goes for the rotard engine: start with a 13B and and your base weight is 2615 pounds. Install that engine into a RWD chassis (e.g., 1st gen RX-7) you add 2.5% for a total of 2680; if you install it into a strut-type FWD chassis (e.g. Mazda GLC) you subtract 2.5% for a total of 2550.

GA

[StephenB]

OK so I think I got this ST class figured out for my car...

An ITR RX8 with a dash bar can run in STL at 3075lbs
But you must also chang down to 7" wide wheels (instead of 8.5") And run 17" rims not the 18" that is allowed in ITR on the RX8. Fuel cell looks like it isn't required and I can't seem to find anything else that would be an issue. If you know of or see other things that I am missing please let me know.

If I want to run in STU I could submit a WC VTS sheetand run the car as a WC car. And WC cars only run in STU or STO from what I understand...

Stephen

[Dano77]

Ummmmm Never mind.

Go buy a seven and race us Greg, You know you want to. I have a car for you.

Dan, 77 IT7