Parts/Electric power/ESCs/Holmes Hobbies CrawlMaster Mini V3 Rock Crawler Brushless ESC
Holmes Hobbies CrawlMaster Mini V3 Rock Crawler Brushless ESC
Holmes Hobbies

Holmes Hobbies CrawlMaster Mini V3 Rock Crawler Brushless ESC

Part # HHB2101000214.4(7)
Where to buy
$84.99
AMain Hobbies
Seen Oct 12, 2026
$84.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

ESC Overview:

Holmes Hobbies CrawlMaster ESC (Electronic Speed Controller). The CrawlMaster Mini ESC is designed to fulfill the needs of comp RC Rock Crawlers looking for a small, yet powerful and versatile ESC! It harnesses the power of 32 bit technology to offer the smooth, quiet, and torque-dense driving you desire in an extra small package! The ESC comes pre-soldered and ready to plug and go! It is conformal coated for water resistance, but Holmes Hobbies recommends extra coating with CowRC's Cow-Formal coat (CPP-C46011344 - Sold Separately) if you plan to submerge the ESC.


Features:

  • 32 bit technology
  • Exclusive Sinewave Startup (like FOC) but open system and compatible with all motors
  • Silent operation with most motors, inaudible switching frequency
  • Intelligent RPM lock at low speed for unmatched control when it matters most
  • Regular throttle above low speed operation for torque control and less broken parts at speed
  • Overcurrent, temperature, stalled rotor, and throttle loss protection
  • Automatic cell detection and low voltage protection for LiPo battery
  • Ultra smooth throttle and strongest drag brake out of the box

Specifications:

  • Input Voltage: 2-4S lipo (20V max)
  • Internal BEC: 3A - 7.4V
  • Length: 39mm
  • Width: 26mm
  • Height: 11m
  • Weight: 39g
  • Connector Type: XT60

Includes:

  • (1) CrawlMaster Mini V3 Rock Crawler Brushless ESC
  • (1) USB programmer
  • (1) Manual

Recommended Use:

  • 1/10th and smaller Single speed Trail, Scale, and Rock Crawlers such as TRX4 Sport, SCX10, Element Enduro, etc.
  • 8lb limit, subject to gearing, driving style, terrain, etc.
  • 1800kV motor limit for 4S use
  • NOT recommended for two-speed vehicles, rock racers, tow rigs, and other high load installations

Reviews4.4 · 7 reviews

Chris HuelsmanVerified owneron Holmes Hobbies CrawlMaster Mini V3 Rock Crawler Brushless ESC

This esc has a very low amp internal bec. The issue with that is it will not run peripherals such as steering servo, lights etc. Therefore, an external bec is needed which is extra money and extra wiring; I wish this was stated in the product description. In my opinion, this is very disappointing. The Rhinorc esc is the same technology but it has a 10 amp internal bec with four position adjustable voltage output levels. This Holmes Hobbies esc should only cost around $40.00 and not $84.99; but their name is on it. The Rhinorc esc is far superior and it cost around $89.99 and nothing else is needed to get your crawler running properly; even with high powered steering servos. Thanks Amain Hobbies for making this order experience right.

7 found this helpful
William CourtneyVerified owneron Holmes Hobbies CrawlMaster Mini V3 Rock Crawler Brushless ESC

In my mind this HH set up is perfect for its versatility, quiet operation, control, and the sense of confidence that a name brand can give you. Yes you may want to run a BEC with this HH ESC. I do run a BEC, as do some of the people I run with that aren't running direct powered servos. Oh, and for the guy that gave it 1 Star. I was hanging with a guy running a Rhino on his cheater rig. He was surprised and impressed by the HH when we traded rigs for a while. I was just fine with his Rhino. Where did you say that HH products were designed, as I know where Rhino comes from?

1 found this helpful
Walter MitarewskiVerified owneron Holmes Hobbies CrawlMaster Mini V3 Rock Crawler Brushless ESC

Just brilliant stuff, everything I needed for my Team Spec Revolvers. I direct-solder for less wiring, plug and play firmware unless you use odd stator counts or need precise timing, etc. Can't believe someone gave this one star because it's not a Rhino, that's inappropriate to put it nicely. Thanks Holmes Hobbies and thanks for everything Amain!

1 found this helpful
Steven CuomoVerified owneron Holmes Hobbies CrawlMaster Mini V3 Rock Crawler Brushless ESC

A high quality ESC works well and perfectly matched with the motor ?!!!

CodyVerified ownerMay 13, 2025on Holmes Hobbies CrawlMaster Mini V3 Rock Crawler Brushless ESC

Perfect for running HH outrunners, the guy that gave it one star doesnt know what hes talking about. Just run a bec or direct power servo and youll be happy as a clam. Reefs makes a plug and play bec but i bet the first guy couldnt figure that out

2 found this helpful
What reviewers say

Reviewers largely rate this brushless ESC highly, praising its ease of setup, quiet operation, compact size and compatibility with outrunner motors, with several owners using it in small crawlers. The main point of disagreement is the internal BEC: one 1-star reviewer says it is too low-output to power accessories such as steering servos and lights, requiring an external BEC, and criticises the product description for not stating this and the price. Other reviewers note that a BEC or direct-powered servo is an easy solution, and that the 1-star complaint is not a product defect. Some reviewers compare it favourably with a competing Rhinorc unit. Overall sentiment is strongly positive, though the sample is small and several reviews are brief.

  • + Easy plug-and-play setup
  • + Quiet operation
  • + Compact size, frees up space
  • + Works well with outrunner motors
  • − Low internal BEC output
  • − Requires external BEC for accessories
  • − Product description does not mention BEC limitation
  • − Price considered high by one reviewer
Summary generated from the reviews above.

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