Radio Control Racer Set 5600

[Malnaborg]

Hi everyone.

First of, i know this is a train forum, but a nice user recommended this forum from Brickowl. So here goes :-)

Maybe we have some technical people in the forum that might help :-D
With the mentioned set in the title, i am working on the car and gears.
It would seem that the motor, and the gold gear is not turning, or at least only very little. It has new batteries and all, so that could not be the issue.

I tried to clean the gears and stuff for hairs and other goo, but it still is of no help :-/
Should i just give up, on this old thing, or would anyone have ideas ?
 

Here is a picture of the motor and tech
https://ibb.co/GQbFHt5T

[Toastie]

1 hour ago, Malnaborg said:

or at least only very little

Hmmm. There is this little screw; when you remove that, can you get the motor out? It seems it is connected with cables to the PCB. If you can get it out: Does it spin without any load? If not, then it may be the motor. Next step would be to learn more about this motor ...

Best
Thorsten

[Malnaborg]

Hi Thorsten.

If you mean the screw at the red plate, it does not hold the motor down.
But apart from that, i can lift the motor a little, so it is free, but the golden wheel still does not turn or anything. Only very small increments to left or right.

Oh and not shown on the picture, but there is of cause a cogwheel connecting the golden wheel with the rest to turn the car wheel :-)

[Toastie]

3 hours ago, Malnaborg said:

i can lift the motor a little, so it is free, but the golden wheel still does not turn or anything.

Shoot. Can you turn the brass gear manually when lifting the motor away from the remaining gears? If it does not, then it seems to be the motor, if it does, then further investigation (e.g., apply an external power supply to the motor after de-soldering one of the original wires) seems to be warranted.

Best
Thorsten  

Edited October 17, 2025 by Toastie

[Malnaborg]

Yes all gears turn normally. And without force.

So it seems like the motor in it self. But, it has been used by children, so maybe it just needs to go to lego heaven 🤣

I am not not technical to solder and fiddle with the motor 😁

[Toastie]

9 hours ago, Malnaborg said:

Yes all gears turn normally. And without force.

Wait - including the brass gear sitting directly on the axle of the motor? Or is the motor axle not turning easily when detached from the other gears?

Best
Thorsten

[Malnaborg]

Yes. It all starts from the motor, and the brass gear. Everything else is smooth running. So maybe the motor is just cooked !?

[Toastie]

29 minutes ago, Malnaborg said:

So maybe the motor is just cooked !?

I'd say so. It happens, it is normal, kids, or grown-ups running the motor ;) They do wear out. The thing for me always is: What can be done to get the rest (i.e., everything else than the motor) back to life? Which is a replacement motor. There are so many out there, and it'll need a little research. I, for one, would try to do it right away. Just for the purpose of >not< leaving the unit alone and, in the worst case, trashing it. Soldering is not rocket science, particularly if you need to remove a wire. My view: It is a learning curve. Desolder, inspect, Google. What is the voltage on these devices (I am a nerd, do only lame LEGO stuff, so don't know anything about racers or the like)?. Then the footprint? Seems to be a generic type of motor. Dimensions?

And maybe others do know more about that motor here on EB? Actually, I bet they do. Maybe this forum is not the most appropriate, Technic maybe?

In any case, just keep providing data and we shall try.

All the best
Thorsten

 

[Malnaborg]

Haha thanks.

Well i do not know if i even have the bricks for it. So if anything, I would either throw it out or maybe try to sell it, if anyone was interested in trying for them self.