Holmes Hobbies CrawlMaster Pro 550 Brushed Electric Motor (12T)

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Holmes Hobbies CrawlMaster Pro 550 Brushed Electric Motor (12T)
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Price: $114.99
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The Holmes Hobbies CrawlMaster Pro 550 Brushed Electric Motor offers incredibly smooth startup control and sets the gold standard for Rock Crawling motors.
  • 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

Turns: 12 turn five slot
RPM: 20/000 @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

This product was added to our catalog on March 23, 2021

Verified Owner
Friday, May 14 2021 (about a year ago)
Holmes Hobbies CrawlMaster Pro 550 Brushed Electric Motor (12T)
This motor gets a 5 star review for a few reasons. Mainly and most importantly is low rpm control. Absolutely impressive. I have a very heavy rig for what it should be and this thing performs without missing a beat I'm using on a TRX4 based scattergun v2 chassis 1080 esc and two speed transmission. The low end power paired with the top speed makes this power unit a performer no matter the throttle. Also if you care about these things it's quieter than the esc by a long shot. Hope this helps you with your decision!!