My bottom propellers won't turn. What could be the trouble? Only flew this a few times.

the plastic gear that drives the rotor blades is probably stripped or now loose on the shaft

I, too, have the Nano RC heli. Mine spins and spins faster if I try and take off.
Yours is a relatively easy fix. There are SCREWS under the rotor blades on the bottom. Tighten those.

magnetron is likely wiped out. never operate a microwave empty.

ure the propeller and shaft turn, but I woulsd dare to say that they are actually turning independant of each other. Sort of like a stripped nut on a bolt. They both look like they are in place and working, but when you add any sort of pressure they just don work the way that they are supposed to. I bet the shaft is actually spinning inside of the propeller, as soon as the water pressure is built up, it fails. Spinning it with your fingers will not imitate the real life pressures exerted on the propeller and shaft, that the water pressure exerts under load (in operation). I would either rebuild it with new parts (new shaft and Propeller) or just go out and buy a new one with a warranty. There is no other reason why this pump will jnot throw water through your system... NO REASON, unless you have the thing hooked up wrong, but I think that would be impossible, wouldn't it?

I also have this kind of problem with my apache. The upper propeller must spin faster thatn the lower propeller if not the heli would just spin on its tail although maximum power is achieved. The solution is to check the connection of the gears and the axle of the upper propeller which is located at the bottom of the helicopter. remove first the battery pack to see clearly the connection. try to turn the upper propeller a few turns and see if the axle, gear and the metal connector is sliding. A fixed my heli buy putting a permanent glue on the axle, connector to the gear and whalla. it does not slide. Most problems of this model is the gear of the upper propeller, often times loosened specially during crushes. This will a lot help you as your heli would have power on the upper propeller for lift off. Happy flying.

Gerry1abe.

Please check the connection of the axle of the upper propeller. Turn the heli upside down and spin the upper propeller manually, try to see if the gear turns if not there is a loose connection. You will find 2 small screws near the gear, unscrew one of them and push the axle then back in place, tighten the loosened screws. Turn the upper proppeller manualy, a few turns will do ansd see if the gear turns simultaneously with the propeller. If it still does not turn, apply a permanent glue to the gear and the axle. This will sure have your heli on flight.

Gerry.

pull the bottom bolt out of the carb and then the the bowl. inspect for debris or water then clean out the bowl then blow out the little hole in the bolt. it probably has some **** in it. I see it all the time.

356387029554350

This happens to me all the time this might not help but i either turn it off and then on again or i slide it up or down a few times u could also take it in and ask them for a replacement.