To ensure clarity, these are the Hot Hatch class rules for Brushed (Formula 2) and Brushless (Formula 1) classes.

(Last updated 25/1/2026)

1) Cars to be 1/12th scale Mardave VRX, Oe, Oes, MD25 or Kamtec Hot Hatch.
2) Chassis to be made of GRP with or without side-springs. Dampers are not allowed. The chassis may not be modified in any way from the way provided in the standard kit.
3) Only the standard kit provided motor pod & base plate may be used, un-modified. Motor lowering and balancing options can be fitted.
4) ANY servo can be used, budget recommendations are Futaba S3003, Core RC 4012 or Core RC 9016 & Core cr194
5) Any servo saver & servo mounts may be used.
6) Any track rods, ball cups and balls may be used
7) Any compound of GT12 Mardave and Contact tyres of 32 shore or above can be used. Tyres must be used as they come from the manufacturer and may not be trued. Only Single bolt mounting is allowed.
8) Any lexan/polycarbonate Hatchback style bodyshells. Non hatchback bodyshells may be allowed with the agreement of the competing drivers, but cannot be of a type considered to be of GT or LMP type.
9) Any make of body mounts may be used.
10) Ballraces are allowed on front and rear axles.
11) Rear axle must remain solid (No Diffs).
12) Spur gears to be 32dp. Mardave Z-drive or Kamtec K-Drive systems are allowed.
13) Any Spur or Pinion gear combination can be used, but cannot create a ratio lower than 3:1 for Brushed motors or 3.2 for Brushless motors. This would be a 48 Spur and 16 Pinion for Brushed and 48 Spur and 15 Pinion for brushless.
14) Any strength suspension springs front or rear may be used.

15) For brushed motors only the Mardave / Mtroniks range of Viper, ECO, HR3/4, Kamtec K1 or Hobbywing 1060 ESC may be used. For brushless motors any 1S or 2S ESC can be used. Any types of battery or motor connectors can be used.

16) Any 20 or 21 turn non-ball raced brushed motor can be used up to a maximum price of £10.99. Any 13.5T with 4.2V(1S) battery or 25.5T with 8.4V(2S) battery can be used. Brushless motors must be of fixed timing types.

17) The motor may be fitted to either side of the chassis, providing there is no modification or alteration to the chassis or mounting blocks. Motors must remain unopened.

18) For Brushed motors cars are to use four cell battery packs only, cells to be sub-C sized only, with a nominal voltage of 1.2 volts per cell. Cells must be readily identifiable. Only 4.8v Packs to be used, up to a maximum of 5000mAh.

19) For Brushless motors cars are to use 1S or 2S LIPO/LIHV hard cased packs, with a nominal voltage of 3.7 or 3.8 volts per cell but must be charged to a maximum or 4.2V per cell. Packs must be readily identifiable.

20) Battery mountings must be original kit.

21) Foam or deformable front and rear bumpers are allowed.

22) Steel whip aerials and rollover masts are not allowed, however standard ‘straw’ type aerial is permitted.
23) Only wings or aerofoils supplied by manufacturer with the bodyshell. No under body aids are allowed.
24) Tyre additives are allowed.
25) There should be a minimum ground clearance of 3mm; this is to include any protruding screws, 1mm clearance for spur gear.
26) Front wishbones, suspension and steering axles to remain same as kit supplied. King pin brace may be added.