Need some help on a pot resistor for small motor

[Subculture]

Have you considered getting some small geared motors with gearboxes, that spin at the right sort of speed?

http://www.gizmoszone.com/shopping/agora.cgi?product=Gearmotor&user4=612series;ppinc=1g

You can reduce the voltage using a potential divider, either by using discrete components or a pot. This won't damage the ESC.



Resistance has a very wide range, so to read that on a multimeter you need different stages, e.g. 1 ohm, 1000 ohms, 1000000 ohms.

Plenty of information if you google it on how to use a multimeter to read resistance.

[Slats]

Have you considered getting some small geared motors with gearboxes, that spin at the right sort of speed?

http://www.gizmoszone.com/shopping/agora.cgi?product=Gearmotor&user4=612series;ppinc=1g

You can reduce the voltage using a potential divider, either by using discrete components or a pot. This won't damage the ESC.

[ATTACH=CONFIG]10449[/ATTACH]

Resistance has a very wide range, so to read that on a multimeter you need different stages, e.g. 1 ohm, 1000 ohms, 1000000 ohms.

Plenty of information if you google it on how to use a multimeter to read resistance.

Thanks Andy.

The geared motor setup even with those tiny gears which I have from that very shop is too big.
The problem is not the main rotor its the tail rotor and the tiny space available.
So an electrical solution is my best bet.

With the circuit diagram do I put a 66ohm resistor between the positive wire from the ESC to the mini tail rotor, or a 33ohm one or both?
The larger motor spins with the ESC turned down at the right speed so i figure that would just get a parallel set of wires from the ESC with no resistor?
Also what does K mean? does it simply mean 1000..i.e. so a 10K resistor mean 10,000 ohms?

Thanks
John

[Subculture]

You would wire in the resistors leading to the motor you wish to slow down (e.g. you will be running parallel wires from your esc). The other motor should then receive the full voltage. Both resistors should be wired in, with the top leg and bottom legs connecting to the ESC, and middle and bottom connecting to the motor respectively.

'k' is short for 'kilo' which is 1000 in the metric system.

[Slats]

Both resistors should be wired in, with the top leg and bottom legs connecting to the ESC, and middle and bottom connecting to the motor respectively.

Thanks - but you have lost me. What are the "legs"? I thought this meant either end of the resistor, I don't know if this is the case if there is a middle leg? If so what is middle and which is top and bottom?
There are two wires from the ESC to each motor. For the motor we are slowing down do the resistors go together from the ESC in place of one of the motor wires? Or do they go in place of each wire?
Thanks
J

[Subculture]

Is this easier to understand?

[Slats]

[ATTACH=CONFIG]10451[/ATTACH]Is this easier to understand?

Yes thanks for that.
So middle legs means that you wire the two resistors together. I understand.:biggrin:
Thanks

To aid my learning why won't the 66ohm resistor cause a short circuit as it bridges across the motor terminals?
Also if I want to add some noise suppression to this motor, how do I proceed with respect to this particular setup?

Thanks

J

[Subculture]

A resistor is not a 'short circuit'. Bit of a big 'ask' to explain why that is, because really this boils down to fundamentals, and that can be found in many textbooks.

Noise suppression caps are the same as any other motor installation.

[Slats]

Thanks Andy
I am still learning when it comes to electronics the information you supplied is a big help.


best
J