Great Planes RimFire 63mm Power System - Manual

4
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 4x 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
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
25C LiPo
25C LiPo
25C LiPo
25C LiPo
25C LiPo
25C LiPo
25C LiPo
9.7
6.6
12.2
15.3
10.3
15.4
19.6
24.6
5
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. ElectriFly offers the Silver Series SS-80 Brushless
ESC (GPMM1860) or the Silver Series SS-100 Brushless ESC
(GPMM1870) that work well with the RimFire 1.60 (63-62-250) motor.
The SS-80 and SS-100 ESCs come with 6mm female bullet connectors
and require an adapter (GPMM3119) to connect to the RimFire 1.60
(63-62-250). Also, these ESCs come with a Deans
® Ultra Plug ®
battery connector that matches the connectors that are found on most
batteries that it will use.
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.
2
ACCESSORIES
A
B
C
D
E
F
A Great Planes ® Pro ™ Thread Locking Compound (GPMR6060)
B Standoff Brushless Motor Mount X-Large (GPMG1270)
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)
3
PROPELLERS
There is a wide selection of propellers available for electric use. The
RimFire 1.60 (63-62-250) motor uses high performance glow/gas props
such as the Zinger wood props. The larger the propeller used, the more
current your motor will draw. The smaller the propeller, the less current
the motor will draw.
Shown are a few of the recommended props. Due to the large range of
propellers and the constant addition of new sizes, visit our web sites at
www.electrifly.com and www.greatplanes.com for the most up-to-date
listing of props.
ZINQ1103 16x8 Wood Propeller ZINQ1402 20x8 Wood Propeller
ZINQ1202 18x6 Wood Propeller ZINQ1403 20x10 Wood Propeller
ZINQ1203 18x8 Wood Propeller
Congratulations, you have just purchased one of the RimFire 63mm
power system components. All the components are sold separately to
allow you to customize your power system to your airplane. The
components needed to assemble your complete RimFire 63mm
power system are: RimFire 63mm motor, propeller, propeller adapters
and brushless speed controls. This instruction sheet explains how to
determine what you will need and how to assemble each component.
1
MOTOR
63mm
24mm
24mm
24mm
61.5mm
8mm
3mm Mounting
Screw
RimFire 1.60 ( 63-62-250) (GPMG4795)
The RimFire motors are labeled to provide the most information at a
glance. For example: The RimFire 1.60 (63-62-250) is 63mm diameter,
62mm long and has a kV (rpm-per-volt) of 250.
Motor Output Shaft Diameter and Length: 8x24mm [0.32"x0.96"]
Weight: 628g [25.1oz.]
Input Voltage: 33.3 – 44.4V
Max. Surge Current: 72A
Max. Surge Watts: 3200W
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 a motor with 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
to spin), the motor’s current draw can be increased or decreased.
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. If the propeller is too large,
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
63MM BRUSHLESS
OUTRUNNER MOTOR