Electronic connections in Cars, Boats, Air-planes and multirotors

Hello guys,

I just want to show in this pots how is the connection on each type of model.

Is just to show from the simplest one (cars or boats - 2 channels) to the complicated one (multi-rotors starting with 4 channels and with a flight controller) 

In the multi-rotor draw I did with a quad because is the common model, if was a tricopter would have less one esc and motor and if was a hexacopter would have more 2 escs and mottors.

CARS OR BOATS




AIR-PLANES OR HELICOPTERS





In a multicopter or areplane you can use a flight controller with gps to use the return to home option.

MULTICOPTERS 



some pictures to show!!


 

VIDEOS THAT CAN HELP
















basic information about electric motors

basic information about electric motors used in RC

postagem em português

Hi all,
I received some questions about electric motors and decided to make this post. I will try to clarify the basic doubts about electric motors.

What is KV. 

KV means the number of turns an engine so per minute per volt applied. A 3000KV motor will spin at 21,00 0rpm with a 2S battery (7V), or at 33,000 rpm with a 3S battery (11V). That's why a car or a plane are faster as we increase the number of battery cells (3s, 4s etc) and the voltage.
Therefore the higher the KV higher is the speed and lower the torque.

RPM = KV x Voltage

KV
1s
2s
3s
4s
7,4
11,1
14,8
18,5
3.000
22.200
33.300
44.400
55.500
4.000
29.600
44.400
59.200
74.000
5.000
37.000
55.500
74.000
92.500
6.000
44.400
66.600
88.800
111.000

more KV = Less torque
less KV = More torque

So a motor of 750 KV can be used in a big and heavy and slow quadcopter, and a 2000kv motor can be used in a small, light and faster mutirotor.

What is the T in a motor?

T from turns, defines the number of turns of the copper wire inside the motor. T and KV are inverse, A motor with a big T has a small KV and vice versa. 

So, more turns = more torque = less speed. Less turns = less torque = more speed. 

Brushless x Brushed


A brush-less motor doesn't need a brush because the permanent magnets are not static the part that moves are the permanent magnets, and the motor armature is static. 

So, in a brushed motor, the magnets are stopped until the motor armature is moving. because of that, we need some brushes to send the voltage to the armature.

In-runner or out-runner brush-less motors. 


both motors are brush-less (the permanent magnets moves and the stator is fixed. the most part of multcopters uses a out-runner motor and the most partof cars and boards uses in-runner motors. 

Some pictures to clarify your idea ;)

In a in-runner motor the magnet is on the axis and turns because the outside stator. Inruner (runs inside). So the energy goes to the static part and he magnets runs inside the body.



In the ourrunner the magnets are in the body of the motor, the stator is in the middle, and the role body turns. The propeller is fixed in the motor body and the motor is fixed by it's fixed side in the bottom.


 

You can see a outrunner motor on this video at 0:50s