NTM Prop Drive Series 28-30S 900kv / 270w (short shaft version)


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NTM Prop Drive Series 28-30S 900kv / 270w (short shaft version)

This is our short shaft NTM 28-30S 900kv brushless outrunner motor. It is built with no external shaft allowing you to easily mount this motor to your multi-rotor frame without the need for any modification.

NTM Prop Drive motors are rock-solid performance outrunners with tight windings, quality bearings, correctly rated magnets, balanced stator and flux rings 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 28-30S 900kv (short shaft version)
Kv: 900rpm/v
Max current: 18A
Max Power: 215W @ 12v (3S) / 270W @ 15v (4S)
Shaft: 3mm
Weight: 66g
ESC: 25~30A
Cell count: 3s~4s Lipoly
Bolt holes: 16mm & 19mm
Bolt thread: M3
Connection: 3.5mm Bullet-connector

Prop Tests:
13x4E - 11.1v - 194W - 17.4A - 1.04kg thrust      
12x6E - 11.1v - 195W - 17.8A - 1.01kg thrust             
11x7E - 11.1v - 188W - 17.0A - 0.89kg thrust
10x5E - 11.1v - 133W - 12.0A - 0.75kg thrust
  9x6E - 11.1v - 120W - 10.7A - 0.68kg thrust
  9x6E - 14.8v - 234W - 15.8A - 1.05kg thrust
  8x4E - 14.8v - 159W - 10.6A - 0.75kg thrust

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


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+1
Use these motors already 2 years old, but very rarely fly. This is my first copter and (due to no experience) when they came I smazyval, not tested on backlashes, staged and flew. After only a few flights on 3-of-4 x heard the sound, reminiscent of a collapsed bearings. Dismounted, I saw that the bearings were intact, but shafts made with large clearance. Withdrew, gave the familiar, they covered with chrome, šlifanuli in size, now everything is fine. Probably could have been done just new shafts. That's the kind of experience, those who are interested.
0
Has anyone tried it with other propellers these motors (for example with 11 x 4.5, 12х4, 5). What are the characteristics obtained with them? And tested anyone on the veracity of the "Passport" traction?

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