Holmes Hobby CrawlMaster BL 540 Stubby 10-Pole Sensorless Rock Crawler Motor

CrawlMaster BL 540 Stubby 10-Pole Sensorless Rock Spider Motor 2700kv

 

Brief motor, Smooth Start-up, Sensorless inrunner reliability!

When you need a smooth and effective sensorless motor but don't desire the noise or spinning can of a Revolver, the Crawlmaster 540 Stubby delivers! This 10 pole topology is tuned for competitors and critical motorists, with fine-tuned startup and low end control you get out of Holmes! The Stubby is shorter and lighter than basic 540s without compromising power or torque, it is an optimized performance option in the inrunner design.
 
Top features include really manageable startup, greater efficiency than outrunners (but at lower torque density), sealed can design for messy usage, 8 method mounting for the ideal install, sturdy solder tabs for lower resistance, and large bearings to prevent early failure.  
 
Functions:

10 pole 16mm length Kevlar wrapped rotor with 180c ranked magnets

Twelve slot stator with 200c ranked resin fertilized coils

14g stage wires with greater quality 4mm compression bullets installed

Large ABEC-7 bearings

Sealed can

8 blind mounting holes

Much shorter than a normal 540 motor

Specifications:

25mm 8 hole mounting pattern

M3 mounting screws (5mm depth max, we recommend using 6mm screws for most installs)

3.175mm shaft

36mm size

45mm length

149g (5.26oz) with wires

50,000 rpm max

2-4s lipo recommended

Advised ESC pairing, Castle Creations or Holmes Hobbies products

1 year guarantee from date of purchase. Does not include damage from overheating, rust damage, or improper installation.  We recommend periodic dissasembly and cleaning if the motor is used continuously in water, and additional grease on the exposed ball bearing to prevent water from leaking past the bearing/ shaft user interface.