20 Most Recent RC Remote Control Helicopter Ready To Fly Questions & Answers


i had the same problem.. one of the gears isn't fully engaged.. if you look at the internal mechanism, you'll see two small gears on opposite sides, each engages a larger gear... during impact, these gears can slide and become not fully engaged. That is the strange sound you are hearing. this also prevents the propellers from spinning up fast enough to get fully off the ground. I used a small jewelers screwdriver to reach in and push the problem gear back into place.

RC Remote... | Answered on Dec 26, 2012


The gap is causing you to loose power transfer. Replace the main gear and you should be back in the air. The CB180 is a fixed pitch, so as long as the blades are intact and straight, you can't do anything esle to them. Also make sure your battery is good and fully charged.

RC Remote... | Answered on Nov 04, 2011


This issue is the "Drive Gear Unit" It is the small gear just above the motors which is attached to the very large gear. You will have seen several posts indicating that sometimes this gear shifts and does not engage the larger gear. In my case I looked and say that it was indeed trying to engage the larger gear, however the gear is stripped (the teeth are nearly gone). The sound that you are hearing is the sound of the gear slipping against the Bigger gear. I have a UJ365 which is a newer model. To my disappointment I cannot find a "Drive Gear Unit" anywhere on line. The copter will not function without it. This issue is that it takes the lift of both rotors to lift the copter into the air. There are two motors (one for each rotor) and each motor has one of these drive gear units. Each of these attach to the larger gears which turn the rotors. The rotors each turn in the opposite direction. This is what keeps the copter from continually turning in one direction. When one of the "main Gear Units" becomes damaged it seems to have three noticeable effects. (1) There is a noise that is the gear grinding against the bigger gear. (2) Because many of the teeth are stripped the drive gear engages the bigger bear only some of the time, this causes the rotor to turn slower and in-turn causes there not to be enough lift from the rotors to lift the copter. And finally (3), someone noted that copter wants to spin in one direction. Understanding the above, you can now understand that if one of the rotors is not reaching its full potential to turn, it is also not reaching its full potential to counter act the other fully functioning rotor. Thus the fully functioning rotor is forcing the copter to spin in its direction and the malfunctioning rotor is not spinning fast enough to stop the spin.

So this is the answer to your questions, hopefully on the older models there will be parts available for you to replace it. The copter cannot work until the part is replaced.

RC Remote... | Answered on Jul 11, 2011


We are having the same problem, would really like to know what to do to fix.

RC Remote... | Answered on Jan 18, 2011


If you twist its rotors a little more then the lift can increase. But try to twist then only if they could be else you may become minus them and I would hate it.

RC Remote... | Answered on Feb 27, 2010


The track worked great for the first month and my son loved it. Then one controller went bad and wouldn't supply any power to the track when the trick was pressed. Then other sections of the track started loosing power for some reason. This makes the entire track completely un-usable as the cars can get enough power to go around the loop.. All the railing constantly fall off and you have to re-attach it. This is very cheap quality and I am disappointed.

RC Toys | Answered on Mar 18, 2019


You can use any size Mah but the voltage must be the same.

RC Toys | Answered on Jan 29, 2019

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