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ManualsBrandsGreatPlanes ManualsBrushless Motors Airplanes DronesRimFire 65cc 80-85-160 Outrunner Brushless

Stock # Voltage Capacity Weight

GPMP0541 11.1V (3S) 3350mAh oz (275g)

GPMP0540 7.4V (2S) 3350mAh oz (188g)

GPMP0542 14.8V (4S) 3350mAh oz (347g)

GPMP0543 18.5V (5S) 3350mAh oz (435g)

GPMP0560 7.4V (2S) 5300mAh oz (291g)

GPMP0561 11.1V (3S) 5300mAh oz (426g)

GPMP0562 14.8V (4S) 5300mAh oz (555g)

GPMP0563 18.5V (5S) 5300mAh oz (697g)

Type

25C LiPo

9.7

6.6

12.2

15.3

10.3

15.4

19.6

24.6

ELECTRONIC SPEED CONTROL (ESC)

The following brushless electronic speed controls are compatible with

these motors.

ElectriFly Silver Series 80A Brushless ESC High-Volt (GPMM1860)

ElectriFly Silver Series 100A Brushless ESC High-Volt (GPMM1870)

Castle Creations Phoenix

110 High-Volt Brushless

ESC (CSEM2018)

Kontronik™ Power Jazz

63V Brushless ESC

120A (KONM3140)

DETERMINE WHAT YOU NEED TO BUILD YOUR POWER SYSTEM

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 performance then

multiply 100 x Airplane Weight (lbs)

•

If you expect 3D or extreme performance multiply 150 x

Airplane Weight (lbs)

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

plane to perform as you wish.

3. Select a LiPo battery voltage within the recommended range of the

motor. Keep in mind that voltage affects prop size (lower volts

require bigger props). 12S is a good reference point to start at. See

“Sample Power Systems” in this manual.

4. Divide the minimum wattage that you came up with by the voltage

you selected. This will give you the current you should expect.

5. Determine the battery capacity needed based on the current draw of

your system and your desired flight time. Be sure to select batteries

with the proper C-rating that can deliver the current you need.

6. Determine the ESC you need based on the system current draw.

See the ESC section for recommended ESCs.

In addition to this procedure, you can also visit the Great Planes

ElectriFly web site for descriptions of the power systems recommended

for our line of electric and glow airplanes as well as more detailed

explanation on the subject.

RECOMMENDED

SETUP

RimFire

50cc

12S 5300mAh 25C LiPo, 120A ESC,

8 glow/gas prop

RimFire

65cc

12S 5300mAh 25C LiPo, 120A ESC,

8 glow/gas prop

the current in check. If a higher voltage battery is replaced by a lower volt-

age battery, the size of the propeller can be increased to keep the motor at

its rated current.

Another possibility to fine tune the power system’s performance is to use

another motor with higher kV to increase the current or a lower kV to lower

the current.

ACCESSORIES

A Great Planes

Pro

™

Thread Locking Compound (GPMR6060)

B Standoff Brushless Motor Mount XX-Large (GPMG1275)

C 4mm/6mm Female Bullet Adapter (GPMM3118)

D 6mm/4mm Female Bullet Adapter (GPMM3119)

E 6mm Bullet Connector Male (GPMM3116)

F 6mm Bullet Connector Female (GPMM3117)

PROPELLERS

Because of the high torque of this motor and its ability to spin at high rpm,

we recommend against using electric-only propellers. Below is a listing

of a few of the recommended props.

TOPQ5260 22x10 Power Point

™

ZINQ1803 24x10 Pro-Zinger

TOPQ5270 24x10 Power Point ZINQ2014 26x10 Zinger Prop

ZINQ1403 20x10 Pro-Zinger ZINQ2017 26x12 Zinger Prop

ZINQ1603 22x10 Pro-Zinger

LI-POLY BATTERIES (LIPO)

Number of Cells

Batteries can be connected in series (S) or in parallel (P). A LiPo battery

is advertised by voltage and capacity where each cell carries 3.7 volts. A

4S LiPo battery would be 4 x 3.7V or 14.8V. The capacity is listed in milli-

amp hours or mAh, so a 5300mAh battery can discharge a maximum of

5300 milliamp-hours or 5.3 amp-hours. Please also be aware of the

battery’s discharge current delivery capability, or C-rating. A 25C,

5300mAh battery will deliver 132.5A of current regardless of voltage.

For the most up-to-date list of LiPo batteries, check out the ElectriFly web

site at: www.electrifly.com

Thanks for purchasing the ElectriFly RimFire

™

50cc-65cc Brushless

Motor! In order to complete your power system you will need to select

the correct LiPo batteries, propeller, ESC, and motor mount. The

following instruction manual will explain what you will need to

complete your new RimFire power system.

MOTOR

87.3mm (50cc)

97.3mm (65cc)

80mm

67mm

10 mm

Thread Pitch:

1.25mm

RimFire 50cc (80-75-230) (GPMG4800)

Motor Output Shaft Size: 10mm

Motor Diameter: 80mm [3.14”]

Motor Can Length: 75mm [3.0”]

Mounting Space Length: 87.3mm [3.44”]

Weight: 1250g [44.1oz]

Input Voltage: 33.3-55.5V (9-15S LiPo)

Max Continuous Current: 110A (at 12S)

Max Continuous Power: 5000W

Max Surge Current: 135A (at 12S)

Max Surge Power: 6500W

Prop Range: 22x8 to 26x10 glow/gas prop

Sport Aircraft Weight: 12.7kg [28lbs] [460oz]

3D Aircraft Weight: 8.17kg [18lbs] [288oz]

RimFire 65cc (80-85-160) (GPMG4805)

Motor Output Shaft Size: 10mm

Motor Diameter: 80mm [3.14”]

Motor Can Length: 85mm [3.35”]

Mounting Space Length: 97.3mm [3.83”]

Weight: 1480g [52.2oz]

Input Voltage: 33.3-55.5V (9-15S LiPo)

Max Continuous Current: 135A (at 12S)

Max Continuous Power: 7500W

Max Surge Current: 150A (at 12S)

Max Surge Power: 8400W

Prop Range: 22x10 to 26x12 glow/gas prop

Sport Aircraft Weight: 19.7kg [42lbs] [665oz]

3D Aircraft Weight: 11.79kg [26lbs] [416oz]

Understanding Motors

kV (rpm/volt): This is a number that gets thrown around quite a bit

when talking electrics and it is important to know what it is. kV is the

number of rpm a motor will spin per each volt applied (rpm/volt)

under no load.

This means that basically a motor that has a kV of 1000 when

connected to a 12V battery will try to spin at 12,000rpm (1000x12)

under no load. Likewise a 3500kV motor will try to spin at 42,000rpm

(3500x12) under no load.

When a propeller is attached to the motor, the motor will try to spin

the prop at the rated kV. Depending on the diameter and pitch of the

propeller (the larger the diameter or higher the pitch, the harder it is

for the motor to spin), the motor’s current draw increases as the load

increases and decreases as the load decreases. There are meters

available from your hobby dealer that measure current and voltage.

Because every motor has a maximum current it can take based on its

design and cooling ability, the maximum size of propeller that can be

used with each motor can be determined. Use a propeller that’s too

large and the motor will spin at a much lower rpm than its rated kV,

causing it to draw a lot of current and overheat. If the propeller/fan is

too small, it will require little effort (current) to turn the prop at the

rated kV.

Ideally the motor should be matched with a propeller that causes

the motor to draw 80-100% of its rated maximum constant

current. Once a power system is set up, it can be fine-tuned by

adjusting the propeller size and measuring the amount of current

the motor is drawing.

Please note that the kV of a motor does not change with voltage, but

if a higher voltage is applied to the motor, it will try to spin the same

propeller at a higher rpm. This will cause the motor to draw more

current and possibly exceed the maximum rated current of the motor.

So, if a battery with lower voltage is replaced with one with a higher

voltage, it is recommended that a smaller propeller be used to keep

50CC-65CC BRUSHLESS

OUTRUNNER MOTOR

Items not shown

actual size.

Summary of content (2 pages)

PAGE 1
the current in check. If a higher voltage battery is replaced by a lower voltage battery, the size of the propeller can be increased to keep the motor at its rated current. 50CC-65CC BRUSHLESS OUTRUNNER MOTOR Another possibility to fine tune the power system’s performance is to use another motor with higher kV to increase the current or a lower kV to lower the current.
PAGE 2
7 8 INSTALL YOUR MOTOR 1) If you will mount your motor directly to the firewall or if you will use the Great Planes 80mm Motor Standoff Motor Mount set, cut out the mounting template in this manual and mount it to your firewall using tape or a spray adhesive. Align the template crosshairs with the centering marks provided on the firewall. Drill four 9/32” [7.1mm] mounting holes. 2) Remove the four countersunk screws holding the X-mount to the motor and reinstall them using thread locking compound.