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 Startup, Sensorless inrunner reliability!

When you need a smooth and efficient sensorless motor but do not want the sound or spinning can of a Revolver, the Crawlmaster 540 Stubby delivers! This 10 pole topology is tuned for competition and critical chauffeurs, with refined start-up and low end control you expect from Holmes! The Stubby is shorter and lighter than basic 540s without sacrificing power or torque, it is an optimized performance option in the inrunner design.
 
Leading features consist of really manageable start-up, greater effectiveness than outrunners (but at lower torque density), sealed can develop for messy usage, 8 method installing for the perfect set up, husky solder tabs for lower resistance, and large bearings to prevent early failure.  
 
Features:

Ten pole 16mm length Kevlar covered rotor with 180c ranked magnets

Twelve slot stator with 200c ranked resin fertilized coils

14g stage wires with greater quality 4mm compression bullets set up

Oversized ABEC-7 bearings

Sealed can

8 blind installing holes

Much shorter than a regular 540 motor

Specifications:

25mm 8 hole installing pattern

M3 installing screws (5mm depth max, we suggest using 6mm screws for a lot of installs)

3.175mm shaft

36mm size

45mm length

149g (5.26oz) with wires

50,000 rpm max

2-4s lipo suggested

Advised ESC pairing, Castle Creations or Holmes Hobbies products

1 year service warranty from date of purchase. Does not consist of damage from overheating, rust damage, or inappropriate installation.  We suggest occasional dissasembly and cleaning if the motor is used continuously in water, and additional grease on the exposed ball bearing to prevent water from seeping past the bearing/ shaft user interface.