[HELP] Motors for Heavy Lift Helicopter 42052

[michaelg]

I am relatively new to Technic and have built the heavy lift helicopter as well as the Arctic Truck. In both cases I have taken pains to ensure that all gear assemblies move freely. Despite my best efforts when I attach the motorized functions, battery pack and motor, very little to nothing works. At most on the helicopter I get minimal movement of the rotors before the motor no longer finctions. With the Arctic Truck nothing moves at all. The batteries are brand new and when the motor is not engaged on the device it works fine. I have noticed that when I engage the motor to all pins (including two connectors) that is when it no longer works. I have tried two different motors and in both cases nothing on either vehicle functions. Any help would be greatly appreciated. Ty

[Lego2016Lego]

You could have put the gears in wrong but you may have made the gears have to much friction.

[Jim]

You could have put the gears in wrong but you may have made the gears have to much friction.

That's probably not the case:

In both cases I have taken pains to ensure that all gear assemblies move freely.

[Lego2016Lego]

That's probably not the case:

In both cases I have taken pains to ensure that all gear assemblies move freely.

I am just saying cus that happens to me sometimes

[Catalinanmb]

He says he tried 2 different motors.

[thomol]

I think there was a similar thread some time ago and then the culprit was a bad battery box.

[Ngoc Nguyen]

I recommend using some lubricant oil on both turntables. I often do that after leaving the 42052, 42043, 42042 on the shelf for too long.

[Kaanere]

Have you activated the levers?

[michaelg]

Thank you for all the responses. Yes, I made sure the gears moved easily during assembly and have tried multiple motors. When I built the LEGO Creator Expert 10244 Fairground Mixer and attached the motor and battery pack everything worked perfectly. Yet the same battery and pack does not work on either the heavy lift helipcopter or the arctic truck. Like the helicopter, when I manually engage the various gears on the arctic truck every facet of the model works perfectly. The crane rotates and goes up and down, the bed of the truck tilts effortlessly. Yet when I try using the motor nothing moves. I am wondering if I am doing something wrong when attaching the actual motor to the device. On both the helicopter and arctic truck, there are two black connector pieces that on either side of the axel. When I remove those connectors and attach the motor to the axel, the motor works perfectly, of course, except for the fact that there is nothing holding it steady and as it turns the axel the entire motor casing also tries rotating. The problem always arises when I reinsert the black connectors into the motor (which I presume are there for stability purposes), only then is the motor incapable of rotating the axel. Please let me know if this is making sense. Thanks

[agrof]

Hi!

Does the axle move freely without the motor? Can you rotate it easily by hand? It sounds, that it got stuck while the build.

If possible, please make video about the issues, with and without the motor - all function check.

Or just disassemble the models, and build them again.

Edited July 1, 2016 by agrof

[Jim]

A short video (or videos) might indeed be helpful.

[allanp]

You say everything works prefectly when the two pins that hold the motor in place are NOT installed (assuming you yourself are holding the motor preventing it from turning), but when you put the pins in place it no longer works?

Hmmm that is a strange one. What about if you remove the motor and just have the two pins in the motor, does the motor stall then? Have you looked to see if anything is stuck in the bottom of the hole (eg a piece of polystyrene from packaging materials) where the connector peg fits into the motor? Are there any moulding imperfections on the end of either connector peg?

The reason I ask is because those holes in the front of the motor do NOT have a bottom, they go right through to the internal gearing and so if there is anything stuck in the hole it might jam the motor when you put a connector peg in there.

Edited July 2, 2016 by allanp

[michaelg]

I have rebuilt the helicopter 3 times and each time I took pains to make sure that all gears moved effortlessly. On both the helicopter and the arctic truck all the functions work perfectly when operated manually. I must be doing something wrong in the way I am attaching the motor itself, albeit I cannot figure out what. I will try to upload a video.

Thanks

[Jim]

I think you need to follow allanp's instructions. He has a clear analysis of the problem. Does the motor still work when you attach the pins, but you don't attach the motor to the helicopter?