Great-planes RimFire 150 14-05-3000 Outrunner Brushless - GPMG4 Manuel d'utilisateur télécharger pdf

❏

4. Determine the ESC you need based on the system current

draw. See the ESC section.

Procedure #2: If you know the approximate weight of your

airplane, including the motor and battery, and the performance

you want from it, answer the questions below to determine the

correct power system for your plane. You may need to make

more than one calculation using different motors and battery

combinations. See the battery section for some of the battery

weights for the suggested batteries.

❏

1. Perform the following calculation to determine the wattage

required:

•

If you expect trainer-like performance, then

multiply 75 x Airplane Weight (lbs).

•

If you expect aerobatic or high speed-like

performance, then multiply 100 x Airplane

Weight (lbs).

•

If you expect 3D or extreme performance, multiply

150 x Airplane Weight (lbs).

Note: To convert grams to lbs, divide by 454. To convert ounces

to lbs, divide by 28.

❏

2. The number you get is the minimum wattage you will need

for your plane to perform as you wish. Watts = current (A) ×

voltage (V). Using suggested power system combinations

for reference, determine what combination gives you the

performance you want based on wattage and maximum

propeller size that will ﬁ t on the plane.

❏

3. Note the recommended battery voltage.

❏

4. Determine the battery capacity needed based on the

current draw of your system and your desired ﬂ ight time.

❏

5. Determine the ESC you need based on the system current

draw. In addition to these two procedures, you can also

visit the Great Planes ElectriFly web site for descriptions

of the power systems recommended for our line of

electric airplanes as well as more detailed explanation

on the subject.

Essentially, the maximum weight of your model (fully

equipped w/ battery, radio, etc.) should be as follows

when using this model.

Trainer 4.4oz [125g]

Sport 3.3oz [94g]

3D 2.2oz [63g]

To help you plan your power system requirements for your

project, use the following table to come up with a total weight.

Keep in mind that weight is critical in this size range.

RimFire 150

Prop

Battery

Servos

Receiver

ESC

Airframe

Total Weight

7.1 grams

WEIGHT TABLE

BATTERIES

Cells can be connected in series or in parallel. Usually batteries are

labeled by their number of cells, such as a 2-cell LiPo. This means

the cells are connected in SERIES (S). Arranging batteries in series

gives you more power (higher voltage).

•

Each LiPo battery has 3.7V, so a 2-cell LiPo

battery has 3.7 x 2 = 7.4V

When selecting batteries, please consider weight. Because of this,

we recommend the following batteries:

Great Planes

ElectriFly

200mAh 7.4V 2S 15C LiPo

(GPMP0694)

Weight = 0.48oz [13.5g]

Great Planes ElectriFly

300mAh 7.4V 2S 20C LiPo

(GPMP0700)

Weight = 0.7oz [19.6g]

Due to the constantly changing battery technology, check out the

ElectriFly web site at www.electriﬂ y.com for the most up-to-date

listing of the ElectriFly battery line.

PROPELLER

For any given voltage, an electric motor’s load is determined by

the propeller chosen. A propeller that is too small will not take

advantage of the power that the motor can produce. A propeller

that is too large will cause current draw to exceed the maximum

allowed continuous current. This can catastrophically damage the

motor and/or ESC.

The ﬁ rst number in a propeller designation is the diameter in inches.

The second number refers to the theoretic pitch in inches traveled

for one complete rotation of the prop. So, a 6x3 propeller measures

6" [152mm] in diameter and travels 3" [76mm] forward for one

complete revolution (360°). Generally, when sizing up a prop going

up in diameter gains more thrust (immediate punch-out power).

Going up in pitch results in a higher top speed.

For the RimFire 150 we recommend the following propellers.

Best all-around performance

GWS 5 x 4.3 Propeller (GWSQ5043), 2.8A @ 7.4V, 8490rpm

Sport performance

GWS 4.5 x 4 Propeller (GWSQ2034), 2.5A @ 7.4V, 9810rpm

3D burst performance

GWS 6x3 Propeller (GWSQ2007), 3.0A @ 7.4V, 8130rpm

Note: Do not ﬂ y this set up at full throttle for more than a

few seconds at a time.

DETERMINE WHAT YOU NEED to BUILD YOUR POWER SYSTEM

Now that you have one component for your power system, there

are several different ways to select the rest. In time, experience will

help you to determine what works best for you, but an easy way to

determine what you need now is the following.

Procedure #1: If you know the size of the propeller you want to

turn and the rpm, then:

❏

1. Find the combination that delivers the closest performance to what

you want (refer to the ElectriFly web site for typical combinations),

or refer to the airplane manufacturer’s recommendations.

❏

2. Note the recommended battery voltage.

❏

3. Determine the battery capacity needed based on the current

draw of your system and your desired ﬂ ight time.

Thank you for purchasing the RimFire 150 brushless outrunner

motor! You’ll be pleased with the performance of this micro

motor. We’ve carefully designed this motor to give you the

best performance while using the most popular propellers and

batteries. To get the most out of your RimFire 150, please use

only a 7.4V (2S) LiPo battery. The following instructions will

help you mount your motor and select the right components

to complete your power system.

MOTOR SPECIFICATION

Model Stock #

RimFire 150 (14-17-3000) GPMG4453

The RimFire motors are labeled to provide the most information

at a glance. For example: the RimFire 150 (14-17-3000) is

14mm in diameter, 17mm long, and has a kV (rpm-per-1volt)

of 3000 rpm.

17 mm

14 mm

Connectors 3-pin micro

Max. Constant Current 2.8 A

Max. Surge Current 3.2 A

Max. Constant Watts 21 W

Burst Watts 24 watts

No Load Current 0.17 A

Input Voltage 7.4V (2S LiPo)

Weight

0.20 oz (5.6 g) 0.25 oz (7.1 g)

motor

only

motor, mount,

& prop adapter

Motor

Diameter

0.55 in

(14 mm)

Overall

Length

0.63 in

(15.9 mm)

Shaft

Diameter

0.059 in

(1.5 mm)

Shaft

Length

0.20 in

(5 mm)

Lead

Length

0.87 in

(22 mm)

ELECTRONIC SPEED CONTROL (ESC)

An ESC is basically the device that controls your motor through

your radio system. Never run any RimFire motors with a brushed

ESC. It will not work and you may damage both the motor and

the ESC. Always use a brushless ESC. When choosing an ESC,

choose one that is rated to handle at least the maximum current

your power system will draw during full-throttle operation.

ElectriFly offers Brushless ESCs that will work with the RimFire

150 motor.

For the RimFire 150 we recommend this high quality,

lightweight ESC:

FlightPower

6A Brushless ESC w/BEC

(FPWM0206)

Weight = 0.20oz [5.7g]

150 POWER

SYSTEM

1 2

Résumé du contenu

Page 1 - 150 POWER

❏ 4. Determine the ESC you need based on the system current draw. See the ESC section.Procedure #2: If you know the approximate weight of your airpl

Page 2 - MOTOR INSTALLATION

motor. If it does not rotate correctly, unplug the micro 3-pole connector and rotate it 180°. This will reverse the motor rotation. Note: Do not insta

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Great-planes RimFire 150 14-05-3000 Outrunner Brushless - GPMG4 Manuel d'utilisateur

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