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> Electric Motors > Outrunners by size > Specialised Motors
> Electric Motors > NTM Series > 35mm
> Electric Motors > NTM Series > 42mm
> Electric Motors > Outrunners by size > 35 to 44mm


NTM Prop Drive Series EF-1 Pylon Racing Motor 3842-1300KV / 930W (v2)

NTM Prop Drive Series EF-1 Pylon Racing Motor 3842-1300KV / 930W (v2)
NTM Prop Drive Series EF-1 Pylon Racing Motor 3842-1300KV / 930W (v2)

Officially recognized and approved by the NMPRA, this EF-1 motor is the ideal choice for your electric pylon racing model. It has been designed specifically for use in EF-1 racing offering the ultimate in performance and efficiency. A complete accessory pack is included with this motor.

NTM Prop Drive motors are rock-solid performance outrunners with tight windings, quality bearings, correctly rated magnets, balanced motor bell 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 warehouse.
Model: NTM Prop Drive Series EF-1 1300kv
Kv: 1300rpm/v
Max current: 65A
Max Power: 500W @ 11.1v (3S) / 930W @ 15v (4S)
Shaft: 5mm
Weight: 155g
Cell count: 3s~4s Lipoly
Bolt holes: 25mm
Bolt thread: M3
Connection: 3.5mm Bullet-connector

Prop Tests:
8x8 - 11.1v - 260W - 24A - 0.9kg thrust
8x8 - 14.8v - 560W - 38.8A - 1.45kg thrust

Note: An accessory pack is included with this motor. This is the v2 unit with improved end bell design and silicon wire shielding.




Kv(rpm/v) 1300
Weight (g) 155
Max Current(A) 65
Resistance(mh) 0
Max Voltage(V) 15
Power(W) 930
Shaft A (mm) 5
Length B (mm) 42
Diameter C (mm) 38
Can Length (mm) 23
Total Length E (mm) 60
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Customer Data

Shipped from:
International Warehouse



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 Customer rated
Total of 27 discussions.
Jan  16 points - 4/12/2016
Has anybody the BEARING SIZES ? Standard bearings are **** out of the box - after very low numbers of flights (7x6 6S-1800) they have way to much play.
Daniel  1 points - 3/18/2016
anybody knows what Spinner is suitable for this motor? the prop shaft is bigger than 6mm
Trynflyn  6 points - 1/30/2016
I have a 50 size spitfire that flies beautifully but I have the need for you guys think this motor can power a balsa spitty into the 120mph range?
 George 5 points
Trynflyn, if you need for speed, you need NTM PROP DRIVE SERIES enjine of 45 mm, 4S LiPo, make sure that you ESC is strong!
AcTion  132 points - 1/1/2016
Can someone recommend the motor mount that will fit this motor ?
 CharlySub 13 points
Motor mount and screws are included with this motor. See the last picture...
 AcTion 132 points
The standard mount provided is big and way too big for the EF1 invictus . Also not the standard NTM 35xx size. I bought the NTM 35 carbon mount but the screw did not line up all the holes in the motor (only 2 out of 4) hence my query.
 CharlySub 13 points
Omg. Maybe its a good idea to drill 2 more holes instead of putting questions here... Have fun *-)
 AcTion 132 points
maybe you should consider if your reply is useful instead of putting lousy replies . i cant drill the carbon mount as the motor holes will overlap over the pre-drill ones weakening the mount. i think i have been rather specific in my question and if you dont have answer , pls dont reply.
 buckaroo 61 points
AcTion, that was a good response to Charly, he must be THAT GUY that every club has. Did you find a mount solution for the invictus I just bought one that was on sale and haven't ordered the motor yet. Please let me know what you settled on for the mount. Thanks, Dean
 AcTion 132 points
Not sure why this thread is attracting some odd ball replies but nevertheless, found the answer for those looking to buy this motor and need an alternative motor mount . ie this one will work. NTM 42 accessory size pack
 howard 3 points
i dont like the carbon mounts motor gets hot and they break...
Leotec2000  99 points - 11/25/2015
I have a foam Mig-29 600grs, can i use this motor with 6x5 prop 4s 2200 ? for speed
 CharlySub 13 points
Too big. Too heavy. You can find a lighter motor. And first you choose the motor and then you calculate the size of the prop.
Customer Reviews
Overall Rating
Like it?
Dear all, I am very happy with this motor. We did a comparison with two other official approved EF1 motors. They all three had exact the same performance only this motor cost the half the price!!

3 comments. Reply..

Overall Rating
Like it?
just got two of the Generation 2 motors and was at the EF1 race at Old Julian Airport last weekend. I had not mounted or tested these motors but, a friends motor died in his racer and we took one of the new motors and put it in his Wagner Solution and it preformed very well for the 8 races it flew. I plan on putting the other one in my Shoestring and hopefully they will have more of these motors available soon. The only thing they could do better is to increase the bullet connectors size from 3.5mm to 4.0mm. The silicon insulation on the motor wires and the small flutes on the back of the motor case to keep the wires separated is a good quality touch.

2 comments. Reply..

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WELL I HAVE ORDERED 2 OF THESE for the invictus planes , along with yep 80 amp escs . they are a very smooth running motor , combined with the nano tech 2650 mah 30-70c 4s batteries they pull 1038 watts peak and settle at about 61 amps 960 watts with the rec 8x8 apc props . seem well balanced with no resonance on any throttle position .

1 comment. Reply..

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I don't know where these guys get their prop data from...mine benched 50A with apc8x8 using 3300 4s 40C turnigy lipo. run thru a plush 60 esc. I tried to get close to the max amp level of 65 with a 5S 2700mah nanotech. at 80 percent throttle I saw 63 amps and shut it down. after only 2 small bursts on the bench, right out of the box, there was a little bearing play on the motor. other than that, it looks very beefy. can is 38mm diameter.

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Overall Rating
Like it?
So far a tough little motor.
Excellent bang for your buck.
I just hope that it doesn't fly apart like the Turnigy SK3 its replacing.

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