17.5T GT Rules

17.5T GT Rules

Chassis

Any Four-wheel drive, 190mm touring chassis with independent suspension on all four wheels.
Each driven wheel must have a flexible joint, eg: dog bone/s or universal joint/s in its drive shaft.

  • Drive train and suspension design is free from restriction.
  • Flat Pan (1/12th and 1/10th Track Style) chassis are NOT allowed.
  • The Chassis must not be shaped to gain an aerodynamic advantage. In principle the underside of the chassis must be flat and parallel to the ground along the entire length of the body-shell.
  • Aerodynamic shaped parts (splitters / diffuses /tunnels/etc) are NOT to be fitted to the chassis. Rear bumpers are allowed but aero diffusers must be blocked.
  • Front AERO 3D bumpers are allowed.

Motor & ESC

Motor & Electronics

  • Any BRCA, IFMAR and ROAR approved 17.5T motor, fixed timing or adjustable timed motors are allowed. No OutLaw motors allowed.
  • The motor should be run out of the box with NO Modifications at all. No option rotors allowed.
  • Any ESC on any approved list, without dynamic timing, but with Blinky mode enabled , is allowed.​

ESC

Speed Controllers as per ROAR BRCA list. Speed controllers eligible for Stock classes must provide zero timing advance, along with disabling advanced motor control functions (i.e. Boost, Cheat Mode, Turbo, etc). When the “0 Boost” profile is enabled, it shall be indicated by a blinking LED while the ESC is armed and in neutral position.

Body Shell

  • LMH, GT1, GT2, GT3 & GT4 190mm wide bodies of actual GT cars ONLY. No Hybrids (no weird stuff) and only approved bodies from current suppliers.
  • All current brand supplied LMH bodies are allowed.
    All GT shells must represent a current full size GT chassis or be on an approved list. One such list is the USGT list or approved GT bodies.
    NO LMP bodies are allowed.

    Brands currently supplying GT and LMH bodies :

    BittyDesign
    Mon-Tech
    Zooracing
    Pitlane Hobbies
    Blitz
    SuperRAD
    Proline
    EXOTEK
    Team Saxo
    EVO Race
  • No Additional Aero packages are allowed. Only what is supplied from the manufacturer.
  • Eligibility of new shells will be at the discretion of the rules committee. USGT body rules allowed.
  • Lists will be amended when new bodies come on the market. If in doubt, check with your local club.

Tyres

  • 24mm Rubber tyres.​ Spoked, Either Radials or Slicks. No dished rims allowed.
  • 28 shore compound and above allowed to accommodate weather and track conditions.
  • Tyre cleaner permitted.
  • Tyre warmers permitted.
  • Tyre additive permitted.

Hop Ups

  • Any chassis hop up available from any manufacturer is allowed.

Batteries

  • Any 2 cell Hard-cased approved 7.4 LiPo or 7.6v LiHv packs as listed on the BRCA, ROAR or EFRA websites. Maximum voltage per pack 8.4V when fully charged.

Gearing

  • Gearing is unrestricted.

Weight

  • Minimum 1320 grams ready to run including transponder.

 

  • Gearing is unrestricted.

Width

  • 195mm maximum (due to body shell molding irregularities)