Stadium Truck
Motors
Any Roar 13.5 sensored or 3500 Sensorless approved brushless motor found here:
http://www.roarracing.com/approvals/brushlessmotors.php
The maximum retail price of a brushless motor shall be $129.00
Rotor Size - 12.2 mm to 12.5 mm. No Tolerances
Magnet Length - 25.0 mm +/- 1.00 mm
The inductance for each slot of the stator shall be 102.00 Micro Henries minimum and 108.00 Micro Henries maximum, measured with the rotor removed from the motor.
No hybrid (mixing of parts from approved brushless motors) allowed.

Sensor wires are to wired as follows
Pin #1- Black wire-ground potential
Pin #2- Orange wire-phase C
Pin #3- White wire-phase B
Pin #4- Green wire-phase A
Pin #5- Blue wire-temp control, 10 k Thermistor referenced to ground potential
Pin #6- Red wire-+ 5.0 volts =/- 10%

Batteries - All classes are limited to Sub-C 4 or 6 cell maximum 7.2 volt battery pack, any pack that is readily available. Example: the new 4500 and 4600 batteries will be legal once available.

Lipo is legal but must be a hard cased 7.4 volt, 2s , ROAR approved Lipo 
(found here: http://www.roarracing.com/approvals/lipobattery.php)
When charging at the track you will need to charge in an Ammo box or lipo bag. You must run a Lipo smart stop system. This can be built into the ESC or as a separate unit.


2 Wheel Drive ONLY

3 Gear Box Transmission

Maximum length - 18”
Maximum width - 13”
Wheel base -Minimum - 9”
Maximum - 11.5”
Minimum weight – 2wd- 56 ounces
Minimum mounting bead - 2.175”
Maximum mounting bead - 2.25"
Maximum overall - 2.46”
Maximum wheel width - 2”
Tire width - Minimum - 2" Rubber or Foam
Maximum - 2.125”
Minimum tire diameter - 3.6”
Race length: 6 minutes
Bodies - Off-road Truck

Motors - Any nitro motor or any ROAR approved 540 brushed or brushless electric motor