How To Choose A Brushless Motor For Rc Plane

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How do you size a brushless motor for an rc plane?

750 watts = 1 horsepower. An easy way to estimate power needs for RC hobby applications is to use 100 watts per pound for sport flying, 150 for aggressive aerobatics, 200 watts per pound for 3D flying.

Which is the best brushless motor for rc plane?

Traxxas Brushless Power System. CLICK HERE FOR PRICE. Innovateking Brushless Motor. CLICK HERE FOR PRICE. Crazepony Brushless Motor. CLICK HERE FOR PRICE. Betafpv Brushless Motors. DYS D2830 Brushless Motor. Tamiya Brushless RC Motor. Honorall Brushless Motor. Readytosky Brushless Motors.

How do I choose a servo motor for my rc plane?

Load. Correctly sizing a servo motor begins with knowing the load. Speed. Another important factor is the speed or velocity. Torque. Once the load and speed are known, calculate the required torque values. Sizing Software. A Word About Gearing.

How do I choose a KV motor?

Choosing the correct KV is very important, it’s critical for the motor operation and high motor performance which is critical for the project. There are few things that determine the top speed: Battery voltage, gear ratio (if any), wheel size ( if any) and the motor KV.

How fast is a 3300KV brushless motor?

A 3300KV brushless 540 motor is included along with a 60A LiPO ready brushless Electric Speed Controller and 3500mAh 15c LIPO battery. This provides superior precision and power needed to blow you away with speeds up to 50 mph.

What motor should I use for RC plane?

If you select a motor with a higher kv and a smaller propeller the speed of the thrust will be higher, and as a result your plane will fly faster. For your first plane I recommend a motor kv between 850kv and 1500kv.

What is the difference between Inrunner and outrunner motors?

With conventional motors, the magnets are attached to a shaft that rotates on the inside of the stator coils. This is called an inrunner motor. With an outrunner motor the magnets are attached to a ring or sleeve on the outside of the stator coils.

What does the KV on a brushless motor mean?

Kv describes the RPM (revolutions per minute) a motor does per Volt that is put into it. Generally speaking the more Kv a motor has, the more RPM and more power. For example, a 9000Kv motor would be faster than a 2200Kv motor. If Kv is like horsepower, then Turns is the physical attribute of a motor.

How many servos does an RC plane need?

Number of servos depends. Tail wheels can be driven direct off the rudder which means 1 servo for rudder, usually 1 for elevator, ailerons can have both 1 or 2 depending on the configuration. Also elevators could have 2. It really depends on the build.

What factors should you consider when selecting a servo motor?

Continuous torque. Peak torque. Speed. Gear ratio. Inertia. Accuracy. Environment factors. Efficiency.

How do I choose a brushless motor for an airplane?

As you might expect, motor speed is connected to how fast you want/need your plane to go. To compare speeds, you’re going to want to look for a KV number. KV = revolutions per volt. For every volt that’s fed to the motor, in a no-load condition, the number is how many times the motor would turn.

Does lower KV mean more torque?

Kv allows you to get a handle on the torque that can be expected from a particular motor. Torque is determined by the number of winds on the armature and the strength of the magnets. A low Kv motor has more winds of thinner wire—it will carry more volts at fewer amps, produce higher torque, and swing a bigger prop.

How many turns is a Reedy 3300Kv brushless motor?

I “think” 3300kv is about a 13.5 turn motor, so probably wouldn’t be legal for stock. ^ correct. Location: Reedy!!!! If you gear it down, like <20 pinion, it will run equal with the 17.5 turns so that your friend doesn't have to shell out for a new Sensored ESC and Motor straight away.

How much power does my RC plane need?

90 to 110 watts per pound is good for fast-flying scale models and some sport aerobatic aircraft. 110 to 130 watts per pound is what you want for advanced aerobatics and high-speed aircraft. 130 to 150 watts per pound is needed for lightly loaded 3D models and ducted fans.

Why does a brushless motor have 3 wires?

The three wires give the brushless motors more pulling power. Understanding this helps understand stepper motors below. The two wires of the brushed dc motor can be thought of as forward and reverse. The three wires of brushless can be thought of as 1, 2 and 3.

What is an inrunner motor?

The term inrunner refers to an electric motor where the rotor (runner) is inside the stator. The term is in particular used for brushless motors to differentiate them from outrunners that have their rotor outside the stator. The vast majority of electric motors are inrunners.

How does a pancake motor work?

Pancake motors operate on the Lorentz force, which is perpendicular to both the magnetic field and the current. This force produces torque that causes the motor to rotate.

What does 12t mean on RC motors?

A 12 turn motor will be tons faster and will drain a battery faster . Just as he said. a twelve turn motor will have more RPM, less torque, and draw more current. The number or turns refers toi the number of times the wire is warpped around your armature in the motor.

What Kv is a 13.5 motor?

That chart, a few posts up, is probably at the far end of maximum Kv rating scale. I have some 13.5T, and 17.5T motors that have some very different Kv “numbers” associated with them when compared to the chart, e.g., my mild 13.5T is said to be a 2550Kv motor, and one of my 17.5T motors is said to be 2250Kv.

How do you calculate ESC size?

To arrive at the size of ESC you need, when you know how many cells in series, divide the maximum wattage of your chosen motor by the voltage of your power pack. This will give you the current (amps) that your ESC will have to handle.

What amperage ESC do I need?

If you are using 30amps ESCs, you should choose motors that are bigger than 2205 or faster than 2300kv, and propellers should be bigger than 5 inches. For examples 30 amps is required for the 2204 2700kv, 2204 3200kv, 2205 2700kv or 2206 1900kv(with 6 inch propellers).

How big of a servo do I need?

The most common size of servo is the “Standard” size. A standard size servo is roughly around 40 mm (length) x 38mm (height) x 20mm (width). These are used on lots of 1/10 and 1/8 vehicles.

What size is a micro servo?

Size : 23x11x29 mm. Voltage : 4.8V nominal (3V to 6V DC) Weight: 9g / 0.32oz.

What servo should I use?

In general, the bigger and heavier the model, the higher torque your servo should provide. Airplane control surface area and servo arm length are also factors. Speed – A fast or slow servo will alter the ‘feel’ of your model. Fast is good, but using a servo that is too fast can cause a twitchy feel.

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