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15 votes

Why do brushless motors have 3 wires compared to 2 wires on a brushed motor?

A standard brushed motor has a positive, negative and a commutator that switches the polarity of the rotor. Conversely, a brushless motor has a multiple of three sets of coils. These coils are ...
Drones and Whatnot's user avatar
14 votes
Accepted

Why does a brushless drone fly longer?

Brushless motors (aka BLDC) are typically[*] more efficient than brushed DC motors. Higher efficiency equates to longer flight times for a same battery pack. Amongst other reasons: The inrush ...
Kenn Sebesta's user avatar
  • 1,892
8 votes
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Why do brushless motors have 3 wires compared to 2 wires on a brushed motor?

TL;DR: Brushed DC motors have two wires because they require DC current (+VCC and Ground), while brushless motors require more complex driving circuitry which controls the AC current required to ...
ifconfig's user avatar
  • 6,008
6 votes
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How do I tell when to replace the motors on my tinywhoop?

As someone who loves collecting data for analysis, I do track all of my flights. I have found that, under normal conditions, brushed motors should last for at least a few hundred flights. You can ...
Schome1's user avatar
  • 1,226
5 votes
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Why do brushless drone motors tend to be more expensive than brushed?

Brushless motors are typically CNC machined for a large part of their manufacturing process. The top part of the bell and bearing race are machined from aluminum. The shafts typically steel or a ...
QuadMcFly's user avatar
  • 1,200
4 votes

Need tips on getting this to fly properly

That sounds like you don't have a flight controller. You won't be able to fly a quadcopter without electronic stabilisation of some sort. The basic configuration is not naturally stable. An analogy is ...
Robin Bennett's user avatar
3 votes
Accepted

Are there any brushed outrunner motors?

The difference between outrunner and inrunner BLDC (brushless DC) motors is that an outrunner's rotor is outside the stator while an inrunner's rotor is inside the stator. (cit.) In general, ...
ifconfig's user avatar
  • 6,008
3 votes

Why does a brushless drone fly longer?

There are multiple reasons. Firstly, here is what I have been able to source: https://www.popularmechanics.com/home/tools/a8109/whats-so-great-about-brushless-motor-power-tools/ In this article, you ...
Drones and Whatnot's user avatar
3 votes

Why does a brushless drone fly longer?

On a brushed motor, the permanent magnets are on the outside (stator) and the electromagnets are inside (on the rotor.) The coils are connected to the supply voltage by the eponymous brushes, which ...
Kralc's user avatar
  • 6,056
2 votes

Will a heavier drone frame help in avoiding toppling. (Not using receiver yet)

The weight by itself is probably not the issue. As long as the frame is strong enough to hold the motors steady it should be fine. Center of Gravity The center of gravity is the 'balance point' in the ...
Kevin's user avatar
  • 501
2 votes

Can I use a 1.5 amp 5v or 12v supply to power the esc and cd rom brushless motor?

Brushless motors need an electronic speed controller to energise each set of coils in turn. There are usually three sets of coils, supplied via three wires. The speed controller takes the DC input ...
Robin Bennett's user avatar
1 vote

Need tips on getting this to fly properly

Found that there is a tilt because of the hanging wire connecting to the motors. Will remove the wire and replace with lighter smaller wire connecting battery to motors. Maybe flip over will be gone ...
Raster R's user avatar
  • 381

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