HeliRush RC Helicopter Forum

I seem to be having a problem with the lower rotor on my blade mcx micro. The bottom rotor is spinning slower and now when I try fly it straight up too fast, the whole copter spins to the right or clockwise. Also when I land and power down the lower rotor stops spinning first. I am thinking either my outer shaft or gear/bushing is starting to go, or my left motor is having a problem. My question though is, could this just be a friction problem that I can fix with some kind of lubrication? And, what type of lube would I use if that is the case? Also, how do you remove the outer shaft. I have already had to replace the inner shaft and had no trouble removing that. Hope someone can help me

Sincerely, John

Hey John,
I'd consider just replacing the motor altogether. Also, unless you're flying a higher end heli, anytime you go up really fast your tail's gonna spin like that.
Good luck

It could be a friction problem, but that should be obvious by spinning the rotors by hand.

I'd agree that it's probably a bad motor.

well actually, when I first got the blade once I got the trim right I could go up fast with no problem and no spinning. This is something new that just started happening. Also, I did spin the rotor by hand and the top rotor spins much freer then the bottom one which made me think it was a friction problem, I can't tell for sure though until I have the shaft separated from the motor. Does anyone know how to take apart this type of copter so that I can see if the outer shaft is the problem or if it is the motor?

Thanks,, John

It could be friction, but could also be a motor that's going bad - if you disconnect it from the gear and spin the motor by hand, you'll know for sure.

It could also just be that the gear mesh is too tight and needs to be loosened.

Thanks, yea thats what I want to do. I am just not sure how to disconnect the motor from the rotor. if you know of a site that can give me detailed instructions to do that, it would be appreciated. I tried to search for a site myself and couldn't find one, and the blade didn't come with instructions for taking the copter apart.

John

This might help...

http://www.rcgroups.com/forums/showthread.php?t=984335