top of page

PDX RC underground classes

Novice

     The Novice class is for entry-level drivers that are new to RC racing. The rules for this division are:

  • Chassis: Any 2wd 1/10th electric off-road competition vehicle or 1/10th RTR vehicle with RTR electronics. We strongly discourage the use of 4wd vehicles in this division.

  • Motor: 27T brushed motors, or 17.5T to 21.5T brushless motors or the original RTR power system for your specific vehicle

  • Batteries: 6-cell NiMH batteries, or 2-cell hard case Li-Poly batteries

  • Tires: Carpet tires

  • Bodies: Any body style is allowed.

  • Minimum Weight: None.

21.5 Buggy

      The 21.5 Buggy division is for  beginner and intermediate  racers who wish to run 2wd buggies with stock/spec motors, and is often       the largest divisions at the track. The rules for this division are:

  • Chassis: Any 1/10th off-road 2-wheel drive buggy style chassis.

  • Motor: Any roar approved motor

  • ESC (Electronic Speed Control): ROAR Approved Non-Timing ESC’s, “Blinky” only

  • Batteries: 2-cell hard case Li-Poly batteries charged at less than 40 amps

  • Tires: Any wheel with carpet tires intended for the class is allowed.

  • Bodies: Any 2WD buggy body intended for the class.

  • Minimum Weight: 1474 grams.

  • NO sponsored drivers

Stock Buggy

       The 17.5 Buggy division is for  intermediate racers who wish to run 2wd buggies with stock motors. This division is the most competitive divisions at the track. The rules for this class are:

  • Chassis: Any off-road 2-wheel drive buggy style chassis.

  • Motor: ​ROAR Approved stock 17.5 spec brushless motor 

  • ESC (Electronic Speed Control): ROAR Blinky mode

  • Batteries: 2-cell hard case Li-Poly batteries charged at less than 40 amps no battery warmers

  • Tires: Any wheel with rubber tires intended for the class is allowed.

  • Bodies: Any 2WD buggy body intended for the class.

  • Minimum Weight: 1474 grams.

  • No sponsored drivers

  • See ROAR rules, page 49, section 8.7.1, for all chassis rules

Pro Stock Buggy

       The 17.5 Buggy division is for  advanced/expert racers who wish to run 2wd buggies with stock/spec motors. This division is the          most competitive divisions at the track. The rules for this class are:

  • Chassis: Any off-road 2-wheel drive buggy style chassis.

  • Motor: ROAR Approved stock 17.5 spec brushless motor or specter motor

  • ESC (Electronic Speed Control): ROAR Approved Timing Blinky mode

  • Batteries: 2-cell hard case Li-Poly batteries charged at less than 40 amps no battery warmers

  • Tires: Any wheel with rubber tires intended for the class is allowed.

  • Bodies: Any 2WD buggy body intended for the class.

  • Minimum Weight: 1474 grams.

  • See ROAR rules, page 49, section 8.7.1, for all chassis rules

Mod 2wd Buggy

       The Modified Buggy division is for advanced/expert racers who wish to run modified motors, and is one of the fastest and most                          demanding divisions at the track. The rules for this class are:

  • Chassis: Any off-road 2-wheel drive buggy style chassis.

  • Motor: Any brushless motor.10.5T motors and lower.

  • Batteries:  2-cell hard case Li-Poly batteries

  • Tires: Any wheel with carpet tires intended for the class is allowed.

  • Bodies: Any 2WD buggy body intended for the class.

  • Minimum Weight: 1500 grams.

  • See ROAR rules, page 49, section 8.7.1, for all chassis rules

13.5 4WD Buggy

       The 13.5 4WD Buggy division is for intermediate racers who wish to run 4-wheel drive buggies with ROAR approved 13.5 motors for the            most challenging and fastest divisions of racing at the track. The rules for this class are:

  • Chassis: Any 1/10th off-road 4-wheel drive buggy style chassis.

  • Motor: ROAR Approved stock 13.5 spec brushless motor.

  • ESC (Electronic Speed Control): ROAR Approved Blinky mode

  • Tires: Any wheel with carpet tires intended for the class is allowed.

  • Bodies: Any 4WD buggy body intended for the class.

  • Minimum Weight: 1613 grams.

  • See ROAR rules, page 49, section 8.7.1, for all chassis rules

Mod 4WD Buggy

       The Mod 4WD Buggy division is for advanced racers who wish to run 4-wheel drive buggies with ROAR approved mod motors for the            most challenging and fastest divisions of racing at the track. The rules for this class are:

  • Chassis: Any 1/10th off-road 4-wheel drive buggy style chassis.

  • Motor: ROAR Approved mod brushless motor.

  • ESC (Electronic Speed Control): ROAR Approved Timing and Boost allowed

  • Tires: Any wheel with carpet tires intended for the class is allowed.

  • Bodies: Any 4WD buggy body intended for the class.

  • Minimum Weight: 1613 grams.

  • See ROAR rules, page 49, section 8.7.1, for all chassis rules

Stock Stadium Truck

        The Stock Stadium Truck division is for intermediate to advanced racers who wish to run 2wd stadium trucks with stock/spec motors and          is one of our largest and most competitive divisions at the track. The rules for this division are:

  • Chassis: Any off-road 1/10 2-wheel drive truck style chassis (excluding short course).

  • Motor: ROAR Approved stock 13.5 spec brushless motor.

  • ESC (Electronic Speed Control): ROAR Approved Timing and boost allowed

  • Batteries: 6-cell NiMH batteries, or 2-cell hard case Li-Poly batteries

  • Tires: Any wheel with carpet tires intended for the class is allowed.

  • Bodies: Any 2WD stadium truck body intended for the class.

  • Minimum Weight: 1700 grams.

  • See ROAR rules, page 50, section 8.7.2, for all chassis rules

No 4 wheel drive short course or 1/8th scale allowed at the track

       

2wd Short Course 

        The Short Course Truck division is for intermediate to advanced racers who wish to run 2wd short course trucks with stock/spec motors      The rules for this division are:

  • Chassis: Any off-road 1/10 2-wheel drive short course style chassis 

  • Motor: ROAR Approved stock 13.5 spec brushless motor.

  • ESC (Electronic Speed Control): ROAR Approved Timing and boost allowed

  • Batteries: 6-cell NiMH batteries, or 2-cell hard case Li-Poly batteries

  • Tires: Any wheel with carpet tires intended for the class is allowed.

  • Bodies: Any 2WD short course body intended for the class.

  • Minimum Weight: 1700 grams.

  • See ROAR rules, page 50, section 8.7.2, for all chassis rules

bottom of page