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NTM Prop Drive Series 42-38 750kv / 785w

NTM Prop Drive Series 42-38 750k...

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$25.99
Rating:
Stock:
OUT OF STOCK
Weight:
199g
SKU:
NTM4238-750

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Overview

NTM Prop Drive motors are rock-solid performance outrunners with tight windings, quality bearings, correctly rated magnets, balanced stator and flux rings, tool-steel shafts plus they are QC checked at 14 points, from material processing all the way through to final dyno test.

Because we design and build these motors completely in-house (from 3D/2D drawing to materials sourcing, machining, balancing, final assembly and dyno) we can completely control production and ensure product consistency from design right through to shipping the product to you. The removal of middle-men has meant we can drive better value to the market and retail these motors at factory(our) prices! All performance figures are real and tested on our own motor dynos.

Our QC engineers check and balance each motor before shipping to the HobbyKing.com warehouse.
 
Specs:
Model: NTM Prop Drive Series 42-38 750kv
Kv: 750rpm/v
Max current: 55A
Max Power: 403W @ 12v (3S) / 785W @ 15v (4S)
Shaft: 5mm
Weight: 169g
ESC: 60A
Cell count: 3s~4s Lipoly
Bolt holes: 25mm
Bolt thread: M3
Connection: 4.0mm Bullet-connector

Prop Tests: 
13x10 - 11.1V - 344W - 31A - 1.79kg
13x10 - 14.8v - 740W - 50A - 2.8kg
14 x 6 - 11.1V - 403W - 36A - 2.23kg
14 x 6 - 14.8v - 785W - 53A - 3.05kg

Note: An accessory pack is available for this motor. Please see the related items below.

Specs

Additional Information

  • Blade Count:
    N/A
  • Speed (Sec/60deg):
    No
  • Torque(kg)(min. 0.01kg)
    No
  • Diameter X(Inch)
    No
  • A(mm):
    No
  • B(mm):
    No
  • C(mm)
    No
  • D(mm)
    No
  • E(mm):
    No
  • F(mm):
    No
  • SKU
    NTM4238-750
  • Brand
    N/A
  • Weight(g):
    199.00
  • Length:
    90.00
  • Width
    50.00
  • Height
    85.00
  • Kv(rpm/v):
    750.00
  • Max Currents (A):
    55.00
  • Power (W)
    785.00
  • Length B (mm)
    38.00
  • Can Length D(mm):
    20.00
  • Max Voltage(V):
    15.00
  • Shaft A(mm)
    5.00
  • Unit Weight (g)
    169
  • Diameter C(mm):
    42.00
  • Total Length E(mm):
    55.00
  • Resistance (mh)
    0.00
Discussion
Reviews

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Quality
Value
Overall
This is my 3rd NTM motor, The 1st one was a 42-48 which I gave a good review and is still going great. I bought the 42-38 thinking it would be just as good but I'm completely disappointed with this motor.
The first 42-38 went up in smoke halfway through its first flight(3/4 throttle). 60A ESC, 4s 2200mah battery, 13x6 prop.
Thinking it might have just been a dud one, I purchased another one but unfortunately it went up in smoke on its first flight also. I won't be buying another.
After dismantling the motors I've discovered the quality of the windings are atrocious. The winding even goes over the ebd of the stator??
See pics: http://s718.photobucket.com/user/gravelsandwich/media/NTMpcnt20Motor/20151203_111548.jpg.html?sort=3&o=1
Its a shame about the poor quality windings because this lets down an otherwise great little motor. The case is really strong and I like the bolt on prop drive better than the clamp on style of other motors. I like my 42-48 but I cant buy or recommend the 42-38 to anyone.
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Mmmm, I used this motor to replace the Detrum in my Dynam BF109. I also changed the ESC to a 60a but this motor burnt out in a puff of smoke on the first flight. I have an NTM 42-48 in another plane which is a great motor which is why I bought this one. Maybe I just got a dud?? it took me over a month to install it so....no warranty:(
............Anyway I've ordered another one and replaced the ESC (it died as well so small possibility it killed the NTM??) and see how it goes.....
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I have flown this motor about 10 times, and it has performed well. I installed it on a Dynam Smart Trainer (4lbs) with a 60 amp Hobbyking ESC and an APC 13X8 thin electric prop. With the 13X8 prop, it pulls 40 amps and produces 602 watts; this gives me a power to weight ratio of 150 watts per pound - about where I want to be with this plane.
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Bought to go in my VQ Models Beaver.

Solid build quality and performance as expected from NTM
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Great motor powers my semi scale ww1 DH-2 with 14x7 prop with 4s battery. See my U tube at http://youtu.be/WtWtjY8vuxY.
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I bought this motor for a 1100mm spitfire scratchbuild that I am doing and wow this is such a good quality motor. I just recently static tested it and was getting more than 1.3kgs of thrust with a 4s and an 11x 8.5 turnigy sport precision prop.( the reason im using such a small prop is im scared of breaking it). If you are unsure then just buy it . amazing quality
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Netter Motor zum umwickeln, die alte Wicklung ist ein wenig komisch, 3x 10-10-10-9 Windungen. Neu auf 9 9 in 2x AaBbCcAaBbCc in 0.95er ergibt 740 KV mit guter Khlung kann der nun 100 A Dauer. Glocke ist gewuchtet. Nicht alle Kanten sind gebrochen, also Achtung. Stator ist mit grner Farbe berzogen, ich habe direkt drauf gewickelt. Erste Lage 7 2 Lagen. Fllgrad fast perfekt. Bilder bei den files
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Great motor. Using on a high wing 46 trainer. Very powerful
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Solid well built motor, tested with an APC-E 12x6 prop, plush 60A ESC and 3000 4S 40C turnigy battery which gave the following results;

33 Amps

15.3 Volts

512 Watts

Will probably move up to a 13x6 to get a bit more power out of it.
Quality
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Quality
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NTM Prop Drive Series 42-38 750kv / 785w (EU Warehouse)
Quality
Value
Overall
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