The Crawler 540 Tuning Rotor – 14mm (#5950) was designed to alter the feel and experience of driving a Novak crawler motor, and offers a new dimension of tunability. With a larger diameter and improved magnetic material, the rotor provides more torque and stronger braking. It also increases natural drag braking and improves the motor’s initial throttle response, providing more control on steep climbs and downhill descents. The crawling sintered rotor is compatible with both of Novak’s SS18.5 (#3419) and SS21.5 (#3420) Pro Crawler Brushless Motors. 
With its larger diameter, the new tuning rotor also cuts down the air gap in the motor, leading to more refined controllability. 

CRAWLER TUNING ROTOR SPECS

Diameter: 14mm 
Weight: 34.5 g (1.22 oz) 
Magnet: Nickel-plated, high-strength sintered Neodymimum 
Maximum Operating Temperature: 200° C (392° F)* 
Shaft Diameter: 0.125” (3.2 mm) [accepts all existing pinion gears] 
For more information on Novak's complete line of sintered rotors, click here.
*The temperature of the rotor's magnetic material is rated up to 200 degrees C (392 degrees F). The operating temperature of the motor should never rise above 71 degrees C (160 degrees F). 

For directions on how to replace your Ballistic rotor, please view the Novak Video: How to Replace/Install a Rotor.