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  Item found in the following categories;
> Electric Motors > TURNIGY
> Electric Motors > TURNIGY RotoMax
> Electric Motors > Outrunners by size > Above 50mm
> Planes & Parts > Giant Planes & Acessories > Brushless Motors


Turnigy RotoMax 50cc Size Brushless Outrunner Motor

Turnigy RotoMax 50cc Size Brushless Outrunner Motor
Turnigy RotoMax 50cc Size Brushless Outrunner Motor

Upgrade your 50cc size gas engine model with the Turnigy RotoMax 50cc Brushless outrunner motor. This motor will provide clean and efficient power for your large scale aircraft without the mess and hassle of nitro fuel.

When combined with a 10s Lipoly battery, 24x12/26x12" Propeller and a 180Amp ESC the RotoMax motor will supply punchy, responsive power that only an electric setup can provide.

This motor is specifically suited for carbon fiber & wooden propellers and features an IC style 4 bolt hole design. The shaft has also been tapped to suit a 4mm bolt to make fitting a spinner of your choice easy.

Battery: 10 Cell / 37V
RPM: 172kv
Max current: 120A
Watts: 5300w
No load current: 44V/1.65A
Internal resistance: 0.021 ohm
Weight: 1080g
Diameter of shaft: 10mm
Suggested ESC: 180A 12S Compatible
Suggested Prop: 24x12 Majzlik / 26x12 APC


Kv(rpm/v) 172
Weight (g) 1080
Max Current(A) 120
Resistance(mh) 21
Max Voltage(V) 44
Power(W) 5300
Shaft A (mm) 10
Length B (mm) 102
Diameter C (mm) 80
Can Length (mm) 50
Total Length E (mm) 142
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Customer Data

Weight: 1380g
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Price  $192.30

  • Turnigy Monster-2000 200A 4-12S Brushless ESC

    Combo Price: $197.22   IN STOCK

  • XR Type B Beech Wood 3D/SF Propeller 26x12 (1pc)

    Combo Price: $39.26   IN STOCK

  • 4mm Gold Connectors 10 pairs (20pc)

    Combo Price: $2.65   IN STOCK

  • TCF Precision Carbon Fiber Propeller 26x12 (1pc)

    Combo Price: $33.87   IN STOCK

  • Turnigy Type A Beech Wood Propeller 24x12 (1pc)

    Combo Price: $6.81   BACKORDER

  • TCF Precision Carbon Fiber Propeller 24x10 (1pc)

    Combo Price: $30.71   IN STOCK

Further discounts available for registered & logged-in customers.
 Customer rated
Total of 81 discussions.
Peter  1 points - 10/14/2015
What will be the price with shipping to Bulgaria
ADEL H  18 points - 10/5/2015
the same Question
FlightFixit  7 points - 6/5/2015
What is the thrust of this motor at full power?
 Anthony 39 points
Depends on the prop. The theoretical maximum RPM at full load is going to be around 20,640 without factoring in a prop and the added torque and resistance spinning it makes. (kv x Amperage) Check prop manufacturers websites for prop size/RPM comparisons to figure it out.
ken  31 points - 4/29/2015
Anyone know the bolt pattern to mount it on the firewall?
Kim  6 points - 2/22/2015
What is the frequency of rotomax 50cc ?
 Chris222 55 points
These motors are the same as all BLDC motors. DC motors don't really have a "frequency". This is not an AC motor.
 Anthony 39 points
Actually, they are AC. Your ESC converts the DC current into 3=phase AC. Hence the three wires on the bottom. A true DC motor would only require 2. https : / / en.wikipedia. org / wiki/ Brushless_DC_electric_motor
 Chris222 55 points
Actually the ESC produces a simulated 3-phaze variable frequency AC to the motor. Rather than a "sine wave" the power applied to the motor will appear more triangular with the peaks of the triangles chopped off if you use an oscilliscope. So not truly an AC motor. If you dont believe me hook up 3 phase ac to a brushless dc motor and see what happens.
Customer Reviews
Overall Rating
2 thumbs up!
Excelente motor, acabamento de primeira linha, vou usar em um Sbach 342/ 60cc. Excellent engine, finish line first, I will use in a Sbach 342 / 60cc

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nice build,at idle on 24v the current was 3,7Amp.not like in the hk description 1,6Amp at44v

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I got impatient so retro fitted the rotomax into my Hanger 9 260 27pcnt, the whole conversion from DLE55 to rotomax took about 2hours and consists of 2 x 6s 5000mah turnigy Lipos, 160HV speedy and the prop off the DLE which is a 23x8 carbon Mej. Results on Eflite watt meter 4580watts @ 103 amps after 20sec

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Measured Data: Kv= 190; Ri=16mOhm; Io=2.3A@8V; Weight 1070gr. Motor has 28poles and 24 tooths. Mechanical precision very good. Winding could be better to come down with Ri to Hacker Q80-8M but at this price an excellent motor.

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Tried it some minutes ago with 21x10 woodprop. Batteries: 2x Rhino 6s1p 4900mAh 25C with more than 100 cycles. Current: max. 120A Voltage: 43V at full throttle Power: 5160 Watt Because the power will be even more with new batteries (with higher C-rate (>30C)) I will mount a Will try it again with new batteries and a 20x10 prop.

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