I've bought these because out of curiosity :)
Plastic motors, very lightweight ...
https://hobbyking.com/en_us/emax-pm1806-2300kv-brushless-multi-rotor-motor-set-1xcw-1xccw.html
http://vid.io/xvzAThe Emax brushless motors are at the forefront of technology with the unique use of glass reinforced plastics in the construction of the casing. This produces an ultra-light weight motor that still retains strength and durability. Combine this with high grade bearings and magnets as well as reliable metal stator brace and mounts.
Each set includes both clockwise and counter clockwise threaded prop adapters, making these a must for the 250 size multi-rotors.
Features:
• Glass reinforced plastic casing
• Lightweight and robust
• High quality bearings
• High quality magnets
• CW and CCW threaded prop adapters
• Metal inserts for mounting
Specs:
Poles: 9N12P
KV *RPM/V: 2300
Input Voltage: 2~3S 7.4~11.1V
Max Thrust: 290g
Prop Size: 5~6 inch
Suggested ESC: 6~10amps
Weight: 19g (each)
PROP Power PWM % Voltage Current Thrust RPM
5X4.5 STD 10 11.1 0.28 10.07 2595
5X4.5 STD 25 11.1 1.45 96.79 7269
5X4.5 STD 50 11.1 3.94 209.7 10589
5X4.5 STD 75 11.1 7.91 338.61 13626
5X4.5 STD 100 11.1 9.03 363.57 14144
5X4.5 STD 10 14.8 0.32 22.12 3602
5X4.5 STD 25 14.8 2.06 151.62 9039
5X4.5 STD 50 14.8 5.61 311.08 13136
5X4.5 STD 75 14.8 11.39 473.45 16022
5X4.5 STD 100 14.8 12.37 487.52 16210
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