Electrical – small brushed motors thrust

dc motorquad-copter

I built a quadcopter. It had a very low total thrust/weight ratio, and after I added some components it doesn't fly any more, so I want to change its motors and propellers in order to increase thrust.

The total weight is around 90g; of this, 26g are the motors (20mm brushed motors).

Is it possible to generate [64 + motor weight]g of thrust with 4 brushed motors, each with a small propeller?
If it's possible, what kind of brushed motors and propellers should I use?

Here are my actual motors/propellers; I don't have technical data about them because I don't remember where they come from (I have the since a very long time).
Looking around on Google I found those images; in the motor image's site I found some information, but not very precise…

enter image description here

Best Answer

I recommend looking for spare motors for existing quadrotors and back-calculating from here. Here is one example:

So these motors do not work. Search for the next motor and repeat the exercise. Keep the notes in spreadsheet or a text file. If you checked 30 motors and none of them worked it is time to give up.

Related Topic