Holmes Hobbies TorqueMaster Expert 550 21t Motor New

Holmes Hobbies TorqueMaster Expert 550 21t Motor New.

The Holmes Hobbies TorqueMaster Expert 550 Brushed Motor features the same quality construction as the hand wound Pro series motors, but with a machine wound armature for an affordable alternative.

Features:

550 size provides extra torque and power

Machine wound for affordability

5mm web 3 slot armature- Maximizes torque, efficiency, and offers smooth startup

Gold-plated copper brush hoods to resist corrosion and provide lowest resistance

Aluminum heatsinks shed heat

Filter PCB reduces EMF noise

Brush damper reduces noise and arcing

Can – 1.4mm thick uninterrupted back iron

High-power FB12 ceramic wet magnets maximize torque and efficiency

Dual Japanese Ball bearings

Adjustable timing

Holmes XX springs for consistent drag brake

Holmes Soft Copper brushes for high torque and longest motor life

Broken in for immediate installation and use

Specifications:

Armature: 21 turn three slot

RPM: 27,250 RPM @12v @ 12 degrees timing

Weight: 206 grams

Diameter: 36mm OD x 60mm length (not including shaft)

Shaft: 1/8" diameter D shaft

Mounting Pattern: 1" (25.4mm) M3 screws

Input Voltage: 6-9 cell nimh, 2-3s Lithium

Rotor: 23mm OD x 29mm length