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Holmes Hobbies sells several real crawler-motor families, but the best choice depends on chassis space, gearing, battery voltage, vehicle weight and ESC type. The CrawlMaster Sport and Pro models below are brushed motors: they need a brushed ESC, not a sensorless brushless ESC. A lower turn count generally raises RPM and current demand; it is not an automatic upgrade. The current Holmes product pages also distinguish the longer 550 can from the 540-size models, so check whether the chassis has room and whether its motor plate accepts the mounting pattern. Confirm connector direction, pinion and gearing with the vehicle before ordering.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Holmes Hobbies CrawlMaster Sport 540 13T | $15–$20 | Amazon · eBay |
| 2 | Holmes Hobbies CrawlMaster Sport 540 16T | $15–$20 | Amazon · eBay |
| 3 | Holmes Hobbies CrawlMaster Sport 540 20T | $15–$20 | Amazon · eBay |
| 4 | Holmes Hobbies CrawlMaster Sport 550 10T | $20–$25 | Amazon · eBay |
| 5 | Holmes Hobbies CrawlMaster Sport 550 12T | $20–$25 | Amazon · eBay |
| 6 | Holmes Hobbies CrawlMaster Sport 550 15T | $20–$25 | Amazon · eBay |
| 7 | Holmes Hobbies CrawlMaster Pro 540 11T | $100–$115 | Amazon · eBay |
| 8 | Holmes Hobbies CrawlMaster Pro 540 13T | $100–$115 | Amazon · eBay |
| 9 | Holmes Hobbies CrawlMaster Pro 540 16T | $100–$115 | Amazon · eBay |
| 10 | Holmes Hobbies CrawlMaster Pro 550 10T | $115–$130 | Amazon · eBay |
The picks, in detail
Holmes Hobbies CrawlMaster Sport 540 13T
A current 540-size brushed CrawlMaster Sport with a 13-turn, 5-slot rotor. Holmes lists its equivalent speed at about 1850 kV; it is the quicker Sport 540 choice for a crawler that has suitable gearing and a brushed ESC.
- brushed 540-size motor
- 13-turn 5-slot rotor
- about 1850 kV equivalent
- zero timing
- Five-slot design targets low-speed smoothness
- Standard 540 mounting format
- Higher RPM choice needs gearing discipline
- Not compatible with a brushless-only ESC
Holmes Hobbies CrawlMaster Sport 540 16T
The 16-turn brushed Sport 540 is the middle speed option in the current sealed-can crawler line. Its published equivalent is about 1500 kV, offering a calmer selection than the 13T while retaining the compact 540-length can.
- brushed 540 size
- 16-turn 5-slot rotor
- about 1500 kV equivalent
- 1/8-inch shaft
- Balanced option between 13T and 20T
- Current Sport family configuration
- Still requires a brushed ESC
- Motor heat depends on gearing and vehicle load
Holmes Hobbies CrawlMaster Sport 540 20T
A current, in-stock 20-turn CrawlMaster Sport 540 with a stated 1250 kV equivalent. Its 36 mm diameter, 52 mm body length and standard 540 mounting make it the slower Sport option where space is tight.
- brushed 540 size
- 20-turn 5-slot rotor
- about 1250 kV equivalent
- 36 mm OD, 52 mm body length
- Published dimensions aid chassis-fit checks
- Lower-speed Sport 540 alternative
- Do not assume lower turns means more torque at every gearing
- Sealed-can motor is not a brushless system
Holmes Hobbies CrawlMaster Sport 550 10T
The 10-turn Sport 550 is a longer-can brushed option for chassis that can accept a 550 body. Holmes publishes the Sport 550 line as 36 mm diameter and 57 mm body length, with standard 540-pattern mounting holes.
- brushed 550-size motor
- 10-turn 5-slot rotor
- 36 mm OD, 57 mm body
- standard 540 mounting pattern
- 550 format adds a distinct fitment/power option
- Five-slot rotor targets controlled crawling
- Longer body may not clear every transmission or skid
- Needs a brushed ESC and suitable current capacity
Holmes Hobbies CrawlMaster Sport 550 12T
A current $19.99 CrawlMaster Sport 550 configuration with a 12-turn 5-slot rotor and an approximately 1700 kV equivalent. Holmes specifies a 57 mm body length and 215 g weight, so confirm clearance before treating it as a drop-in 540 replacement.
- brushed 550 size
- 12-turn 5-slot rotor
- about 1700 kV equivalent
- 57 mm body, 215 g
- Current direct-store listing
- More can length than a Sport 540
- Added length and weight can cause fitment issues
- Improper gearing is not covered as a motor defect
Holmes Hobbies CrawlMaster Sport 550 15T
The 15-turn Sport 550 is the slower published Sport 550 option, with about a 1250 kV equivalent. It is a sensible comparison point when choosing for controlled trail/crawl use rather than maximum wheel speed.
- brushed 550 size
- 15-turn 5-slot rotor
- about 1250 kV equivalent
- zero timing
- Lower-speed option in the 550 Sport line
- Universal rotation/zero timing simplifies installation
- Check 550 clearance first
- A brushed motor cannot be paired with a brushless ESC
Holmes Hobbies CrawlMaster Pro 540 11T
The current CrawlMaster Pro 540 11T is a hand-wound, 5-slot brushed motor listed at $99.99. It is for the buyer prioritising premium startup control and is built to order rather than presented as a cheap sealed-can replacement.
- brushed 540 size
- 11-turn hand-wound armature
- 5-slot rotor
- current Pro line
- Premium Holmes hand-wound construction
- Distinct high-speed Pro 540 configuration
- Costs far more than Sport motors
- Build-to-order lead time may apply
Holmes Hobbies CrawlMaster Pro 540 13T
The CrawlMaster Pro 540 13T is a current $99.99 hand-wound brushed crawler motor. It shares the Pro line’s five-slot layout and should be selected by gearing and ESC capability, not merely because it is a premium model.
- brushed 540 size
- 13-turn hand-wound armature
- 5-slot rotor
- build-to-order Pro line
- Exact current 13T Pro configuration
- Five-slot design supports slow-speed control
- Requires a brushed ESC
- Premium cost is unnecessary for every budget crawler
Holmes Hobbies CrawlMaster Pro 540 16T
A current $99.99 Pro-series 540 16T brushed option. The 16-turn version is one of several separately listed Pro windings; do not substitute a different turn count without reassessing gearing, battery voltage and ESC current rating.
- brushed 540 size
- 16-turn hand-wound armature
- 5-slot rotor
- current Pro product
- Exact, separately sold winding
- Premium Pro construction
- Not a brushless motor
- Ordering lead time can be longer than an in-stock Sport motor
Holmes Hobbies CrawlMaster Pro 550 10T
The CrawlMaster Pro 550 10T is a current $114.99 hand-wound brushed motor with a five-slot armature; Holmes estimates 27,250 RPM at 12 V with 12 degrees of timing. It is a powerful 550-format choice only for a chassis, gearing and brushed ESC built for it.
- brushed 550 size
- 10-turn five-slot armature
- estimated 27,250 RPM at 12 V
- hand-wound Pro line
- Published electrical speed reference
- Extra 550-format torque/power potential
- High-demand winding can overheat with poor gearing
- Motor screws must not be inserted too deeply
Buying tips
- Identify brushed versus brushless before shopping. Every CrawlMaster Sport and CrawlMaster Pro pick here is brushed, so use a brushed ESC and follow its battery-voltage and motor-turn limits.
- Check the motor-can length as well as the mounting holes. A 550 can is longer than a 540 can even where the mount pattern is described as standard 540.
- Start conservatively with pinion and monitor motor and ESC temperature. Holmes notes that damage caused by improper gearing is not covered by the brushed-motor warranty.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.