This is level 1 upgrade for my recently build SK450 quadcopter. There are plenty of things that I want to upgrade/add on it, but better motors are certainly the number 1 priority.
Unfortunately, NTM 2826 1200 kv (short shaft) motor are junk. Why? Bearings are terrible out of the box. On most of them shafts has a ton of play. Bell is way out of balance and it's impossible to balance it. However, even if you do this, prop adapter is so heavy and so unbalanced that you simply can't do anything about it. Also, wires are crap. I've had a crash caused by snapped wire. Not at solder joint, just wire itself. Since wire probably broke due to heavy vibrations, I can safely say that these motors are self-destructing.
Sunnysky motors, on the other hand, are AWESOME. Perfectly balanced even with the prop adapter on (zero vibrations). Also, they don't use spinner. Instead, they have simple nuts which I've replaced with locknuts to prevent props from flying off. Wires are way better.
Power is lower (150W instead of 250W) and kv as well (980 kv oppose to 1200 kv on NTM's). However, this resulted in increased flight time (from 9-10 min to 10-11 min) due to higher efficiency. But, due to lower kv I had to changed props so I've put bigger 9x4.7 props instead of current 8x4 props. I must say that this combo is perfect for SK450 setup.
Total weight stayed the same.
In this video I've shown how to properly put wiremesh on the wires so it would look good and stay there. I did that because I wanted to customise my motors and this is not necessary step.
This vibration dampening setup is not super awesome, but it helps a little bit. At the same time it doesn't harm anything else so why not?
1. Don't burn wiremesh with the lighter because it's useless then. You will have to remove it. That's why you should be very careful when heating heat shrink so that you don't melt the wiremesh.
1. Use hot glue on wiremesh, otherwise it will pop out later.
2. Put locknuts instead of supplied nuts because they won't unscrew them selves.
3. Use threadlocker on all screws!
SunnySky x2212-13 980 kv motors:
eBay - search for "SunnySky 2212 980kv"
Scissors, lighter and Phillips #1 screwdriver
Enjoy RC as much as I do! :)
Video: iPhone 4
Editing: FinalCut Pro X