CLASS RULES – 1:12th 13.5t (Stock)

For Sanctioned Events or full rule set, please visit RCRA EP On Road Rules

Class Rules – 1:12th 13.5T (Stock)

ChassisAny commercially available 1/12 scale rear wheel drive pan car chassis with T-bar or Pivot Ball Link. Independent rear suspension is not allowed. 
MotorAll brushless motors for the Stock class will be wind rating of 13.5 turns, clearly indicated by the manufacturer on the external casing.
ESCAny ESC that does not have dynamic timing i.e. boost or turbo timing options; Or any ESC that has a Blinky mode i.e. a flashing light denotes that no dynamic timing is enabled, is allowed. A 1s specific ESCis recommended for Its plug and play application, a 2s ESC that meets the aforementioned requirements may be used

A 1s specific ESC is recommended for its plug and play application, a 2s ROAR approved ESC that supports 1s application may be used.
Body ShellOnly LM-style body shells on the approved body list provided by IFMAR, EFRA, ROAR or BRCA may be used. Additional side dams may not be fitted. Only side dams moulded into the original body shell are allowed. Body shell may not be trimmed higher than the lower body trim lines – wheel arches must be cut out. No part of the chassis, wheels, tyres, suspension or electrical equipment may be visible outside the body shell when viewed in any plane, except for directly from the rear of the chassis.

Rollover antenna may be fitted. If fitted, it must have a blunt end for safety reasons. The antenna must be part of the mast along its length. Maximum height from the ground: 350mm
WingsOnly one rear wing, moulded into the body shell, may be used. An additional gurney flap may be fitted, provided it does not exceed the height of the originally moulded rear wing. No holes or slots are allowed on the body or wing, except for body post, aerial and club rental transponder holes.
TyresOnly 1/12 scale foam tyres may be used. Pre-mounted or user glued tyres are allowed. Wheel dimension must not be smaller than 29mm and must not exceed 38mm.

Maximum rear tyre width: 40mm
Maximum front tyre width: 28mm 
Hop UpsAll hop-ups for 1/12 scale pan cars are allowed.
BatteriesAny ROAR approved 1s (one cell) Li-Poly hardcase battery is allowed. HV Graphene batteries are allowed however, maximum charged voltage must not exceed 4.20v.
GearingGearing is not restricted
WeightMinimum race-ready weight: 730g (with transponder) 
DimensionsOverall Min Width: 155mm
Overall Max Width: 176mm
Max Track Width: 172mm
Overall Min Length: 320mm
Overall Max Length: 380mm
Driving AidsNo electronic driving aids (steering control by gyroscope, Drag Reduction System, wheel speed sensors, etc.). Transmitter functions are allowed.   
Ride HeightMinimum ride height allowed is 3mm at race ride height.