Racing Rules
The Heart of America Series follows ROAR rules.
ROAR membership is required.
2010 GT Class Rules
All brands of cars that fit into the following rules are permitted to compete in the GT class.
These rules allow for some "racer inovations" to flourish, but at the same time will maintain the spirit of the class.
- Chassis:
- Any 1/8 Buggy/Truggy based and shaft driven chassis GT nitro cars. (Any manufacture or off-road racer conversions are OK also.) Cars can only use commercially available production aluminum lower chassis plates. No carbon fiber lower chassis plates are permitted.
- Body:
- Any commercially available "GT" race car stylr/type body. Must look like a car that could actually be driven on the street with a passenger in real life or full scale. The engines cooling head fins can not be exposed from the top or the sides of the body. Rear wing or spoiler must be attaxhed to the actual body. (No chassis mounted or "buggy/truggy" type wing mounts).
- Tires:
- Only commercially availably rubber tires are allowed. Tires must fit under the car's body from overhead view. Adding "fender flairs" on the body to increase tire coverage is not allowed. No "foam" tires permitted.
- Fuel Capacity:
- All cars can have 1 fuel tnak with a maximum capacity of 150cc.
- Diffs:
- Cars must be equiped with standard gear diffs only. No "TCD" type diffs are permitted.
- Clutch:
- No "adjustable" or "slider" type clutches allowed. Only 2, 3, or 4 shoe buggy based systems are allowed.
- Engine:
- Cars can use any of the engines from the "Approved" list. All spec engine internal parts must remain 100% un-modified factory stock. Racers may remove the "Pull-Starter" from Approved engines and replace the back plate. The engine's crankshaft and all internal parts must remain "100% un-modified factory stock".
GT Class Approved Engines
- Kyosho: GXR28SG
- Kyosho: GXR28 (KYO74025)
- Ofna: .28 Force (OFN52217)
- Ofna: Hyper .28 (OFN53220)
- Axial: .28 Spec (AX001)
- Axial: .28 Spec (AX002)
- Sportwerks M26 (SWK8085)
- Go Technology: .21 3 Port (GTR213PT)
- OS Engines: 21VG(P) (OSMG2058)
- Nova Rossi N21-3T
The engines listed above offer a level playing feild for the GT class racers.

