FEATURES:

• 550 size provides extra torque and power
• Hand wound at Holmes Hobbies for highest performance
• 5 slot armature maximizes smoothness, efficiency, and offers unequaled startup
• Epoxy balanced armature ensures maximum torque, efficiency, and startup smoothness 
• Silver brazed commutator connections allow higher tempurature operation
• Vacuum dipped armatures withstand high RPMs without failure
• 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

Specification:

• 12 turn five slot / 20,000 RPM @12v (estimated) @ 12 degrees timing
• 216 grams 
• 36mm OD x 60mm length (not including shaft)
• 1/8" diameter D shaft
• 1" (25.4mm) mounting pattern for M3 screws
• 6-9 cell nimh, 2-3s Lithium 
• 23mm OD x 29mm length rotor