Body Specifications:
True scale bodies only that means no DNA Protofoam and any sorts of racing bodies that does not closely resemble a production car.
HPI part numbers:
Yokomo parts numbers:
Tamiya parts number:
Body provided deck lid and spoilers allowed. Additional skirts or raised/extended wings or air control surfaces allowed, But must no exceed 1cm from the body.
Body must be trimmed at body trim lines. Full rear bumper required. It is highly preferred that bodies are detailed in race type look of Formula D, D1 and Touge. Fluorescent colors, wild graphics, chromes and non-period correct paint schemes are all allowed. All cars should have numbers on both doors. Wheel rims of any style are allowed. Exhaust or side mirror imitations are allowed but must be securely attached to the car at race start (If parts were to to be detached during a race NO penalty will be given).
Tire & Wheel Specifications:
The only tires allowed are "HPI Tire Drift Type A" Front and Rear, using offset spacers or offset rims designed to make the tire fit the body chosen is allowed.
Grinding of tire tread is NOT permitted. Sanding of mold seam to remove seam is allowed. Tire traction compounds are at the discretion of the track. No other altering, changing or softening of the tire is allowed. (There will be a one lap tire warm up or the drive can choose to make burn out before the race)
Chassis Specification:
Four Wheel Drive touring car chassis only. Any era or brand 4wd chassis is allowed.
Motor Specifications:
Option 1: 27-turn ROAR stock motor: No FDR limit, bearings are not allowed.
Option 2: 17.5 brushless: Motor timing advance is allowed. 12.5 mm rotor diameter maximum (no "tuning" rotors are allowed).
Option 3: 21.5 brushless with 2C LiPo: Novak SS21.5 Pro brushless motor (pn:3421) ONLY combined with any ROAR-approved hard-cased 2C 7.4v LiPo pack up to and including 5000 mAh capacity. All house track rules regarding LiPo usage apply.
Motor timing advance is allowed.
NO Suggested gearing FDR recommendations exists in this class:
Rules of thumb, gear it so you wot over heat.
Tracks should not dictate which motor combination a racer should choose. All motor types/battery combos have been tested to compete evenly against one another in competition with great success. If any one power choice shows a definitive advantage at a certain track, it is up to the race management to even the racing out via suggested bans of certain equipment.
Battery Specifications:
6-7 cell NiMh batteries, N/A mAh limit
2 cell ROAR-approved LiPo hard cased, 5300 mAh limit
Ride Height Specification:
Minimum ride height is 5mm.
Weight Specification:
Minimum 1400g in race-ready trim
Race Specification:
- 20 minute qualifiers (Ice Races)
- 60 minute mains (Tire Changes, Battery Changes are allowed.)
- Random starts will be specified open track layout
- Start positions will determined by qualifying rounds on events with multiple heats.
- Random starts should shuffle starting order via car numbers.
Optional Main Variations:
- 10-20 car A-mains, depending on car counts.
- Invert qualifying order based on random hat pull (top 6-10 cars).
- "LeMans" type starts where all cars are lined up on an angle to the racing line in order.
- Run track in reverse rotation for mains.
MOST IMPORTANTLY: If it's not in the rules, consider it illegal. The class is based on slower, equal playing field competition with less/no traction, where nominal aerodynamic aids will not aid you much
and mostly the opposite setup of grip racing. The final objective is close, fair, wheel-to-wheel racing for all. All decisions of the race promoter or track owner are final.
MAN I DONT KNOW HOW THESE OLD FOOLS CAN WRITE SOMETHING THIS LONG !!!
