&nbspServos are powered by the ESC's output to the receiver. If you're using a higher-strength servo than the ESC can support (usually greater than 20kg), you may experience 'brown-outs' where the radio signal can be interrupted and cause erratic driving. This can be helped by plugging a Glitch Buster into the receiver smoothing the current delivery. However, in some cases, you may need to install an external BEC.

The powerful HS-645MG is one of Hitec’s most popular servos. It’s the perfect choice for those larger sport planes or monster trucks and buggies requiring a durable high torque servo. Featuring our unique M/P and metal gear train technology, the HS-645MG offers one of the strongest gear trains available in any servo.

• High Torque

• Strong Three-Pole Ferrite Motor

• Heavy Duty Metal Gear Train Featuring our Revolutionary Metal/Plastic First Gear (MP Gear)

• Dual Ball Bearing-Supported Output Shaft

• Total Height (A) = 40mm

• Body Width (B) = 38mm

• Below Mount (C) = 24mm

• Above Mount (D) = 11mm

• Total Length (E) = 51mm

• Total Width (F) = 17mm