Holmes Hobbies CrawlMaster Pro 550 Brushed Electric Motor (10T)

The Holmes Hobbies CrawlMaster Pro 550 Brushed Electric Motor is a hand-wound 10-turn, five-slot motor designed for rock crawling. Its 550-size format provides extra torque and power, while the broken-in armature allows immediate installation and use.

Features

• 5-slot armature for smooth startup and efficiency
• Epoxy-balanced armature for torque, efficiency, and startup smoothness
• Silver-brazed commutator connections for higher-temperature operation
• Vacuum-dipped armature for high-RPM durability
• Gold-plated copper brush hoods to resist corrosion and reduce resistance
• Aluminum heatsinks for heat dissipation
• Filter PCB to reduce EMF noise
• Brush damper to reduce noise and arcing
• 1.4mm-thick uninterrupted back iron
• High-power FB12 ceramic wet magnets
• Dual Japanese ball bearings
• Adjustable timing
• Holmes XX springs for consistent drag brake
• Holmes Soft Copper brushes

Specifications

• Turns: 10 turn five slot
• RPM: 27,250 @12v (estimated) & 12 degrees timing
• Weight: 216 grams
• Size: 36mm OD x 60mm length (not including shaft)
• Shaft: 1/8" diameter
• Mounting Pattern: 1" (25.4mm) for M3 screws
• Input Voltage: 6-9 cell nimh, 2-3s Lithium
• Rotor: 23mm OD x 29mm