I bought a couple of Eachine H8 mini quads to fly in the house. Less than $15 shipped from Banggood (mainland China). Takes a couple weeks to get here but the price is great and they carry the replacement parts. Banggood and Aliexpress are where RC modelers (and others) get non-fancy electronic gear fer cheep. Here’s the little critter in question:
- flew the quad into something. If the prop has damage the motor was probably hurt.
- quad stuck under something or upside-down
- something wrapped around prop shaft (hair, fuzz, lint, string)
the motor can burn out. So don’t do that.
Luckily, the tiny motors are available singly or in a four-pack. I just get the four-pack since transit is slow and it’s good to have extras handy. Replacement props are also cheap but I think I’ve only replaced one. Forum wisdom suggested most dings can be smoothed/removed with a nail file — it works quite well.
The wires on those motors are the smallest I have soldered. It required the magnifying glass on one of those helping hands things I also got from BG.
Still it was fun to get the quads back in the air for $2 each. 🙂
I’ve got a larger quad that smoked the MOSFET speed control chip to one motor so that’s next. But it’s a tiny surface mount item that is so small you could probably put 20 of them on your thumbnail. :-\ I ordered the chips off eBay and they came in a strip like you would feed to an automatic board maker.