17.5 GT Class
17.5 GT Class is not a sanctioned class and may not be run at all special events. Should you wish to compete at special events we recommend selection 21.5 Sportsman, 13.5 Stock, or Open. This class is based on a gentleman agreement to run the below specifications at club level.
Chassis 1/10th Scale Four-wheel drive is allowed. Chassis must have 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 / diffusers /tunnels/etc) may not be fitted to the chassis.
Motor Muchmore Racing - Fixed Timing Spec Motor. FLETA ZX 17.5T Type W Brushless Motor with Zero timing.
NO! modifications are allowed in any way at all. This includes any enhancements, improvements, tuning up, shimming, ceramic Bearings, Timing and winding alterations.The Motor to be run is out of the box as is and tampering in any way at all is NOT ALLOWED!.
General cleaning of motor and lubing of original bearings is allowed.
Gearing Fixed Gearing -
is to be set to no less than 3.5 to a Max of 3.7 FDR
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 2 Door GT Style Bodies ONLY - 190mm
Tyres Volante 36 Rubber tyres only (24mm)
Hop-Ups Any hop up available from any manufacturer.
Batteries Any 2 cell Hard-cased approved 7.4 Lipo packs as listed
on the ROAR or EFRA websites.
Weight Minimum weight 1350 grams