Great Planes GPMG5105, GPMG5110 User Manual

Congratulations, you have just purchased the
Ammo 12mm 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 Ammo 12mm power system are: Ammo
12mm motors, a 12mm stick mount gearbox,
propeller, propeller adapters and brushless
speed control. This instr uction sheet explains
how to determine what you will need and how
to assemble each component.

AMMO 12mm PO

AMMO 12mm PO

WER SYSTEM

WER SYSTEM

by Great Planes

®

Model Stock #

12-30-3850...............GPMG5105

12-30-4110...............GPMG5110

The Ammo motors are labeled to provide the
most information at a glance.For example:the
12-30-3850kV is 12mm in diameter, 30mm
long and has a kV (rpm-per-volt) of 3850 rpm.

Motor Output Shaft
Diameter and Length: 1.5x8mm [.06" x .32"]

Weight: 14g [.49oz.]

MOTORS

The ElectriFly Ammo motors have high kVs,
meaning that they like to run at very high rpm.
A gear drive is used in order to reduce the rpm
allowing a larger, more efficient propeller to be
used. Great Planes ElectriFly offers an IPS

(Indoor Power System) Small Gear Drive
(GPMG0495) which comes with two pinions

that allow for the following gear ratios: 6.4:1
and 7.1:1.

The IPS Gear Drive is designed to fit the
5x8mm motor mounting stick that is common
on most of today’s small IPS planes.

GEARBOX

1. Gear Drive Body (1)

2. Prop Saver Hub (1)

3. 2.5x7mm Machine Screw (2)

4. Rubber O-Ring (1)

5. 64 Tooth Spur Gear (1)

6. 9 Tooth Pinion Gear (1)

7. 10 Tooth Pinion Gear (1)

™

™

8mm

30mm

12mm 1.5mm

8.5mm

1.6mm

The Ammo Motor/Silver Series ESC
combination can use NiMH or LiPo batteries.
Typically, NiMH batteries are heavier but much
more affordable for the same capacity as LiPo
batteries. If you want a very light, high­performance airplane, you might want to use
LiPo batteries, but if weight is not a concern,
then NiMH batteries might be for you.

BATTERIES: CHEMISTRY

Cells can be connected in series or in parallel.
Usually batteries are labeled as 8-cell NiMH or 3­cell LiPo. This means the cells are connected in
SERIES (S). Arranging batteries in ser ies gives
you more power (higher voltage).

• Each NiMH cell has 1.2V, so an 8-cell
NiMH battery has 1.2x8 = 9.6V

• Each LiPo battery has 3.7V, so a 3-cell
LiPo battery has 3.7x3 = 11.1V

If a battery is arranged in P ARALLEL it might be
labeled as (P).Arranging the batteries in parallel
will provide more duration (more capacity).

BATTERIES: NUMBER OF CELLS

There is a wide selection of propellers
available for electric use. The 12mm motors
use mainly low-power electric type props such
as the Great Planes PowerFlow

™

props and
the APC Slo Flyer 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 electric
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-to­date listing of electric type props.

PROPELLERS

The IPS Gear Drive uses a 3mm collet type
prop adapter (GPMQ4959) or 3mm set screw
type prop adapter (GPMQ4930). If you will be
using the Ammo 12mm Motor without a gear
drive, it requires a 1.5mm collet type prop
adapter (GPMQ4950).

PROPELLER ADAPTERS

GPMQ4930 3mm Set Screw Type

GPMQ6630 ............9x4.5S PowerFlow

GPMQ6655 ..........10x3.5S PowerFlow

APCQ4960.............7x4SF Slo-Flyer

APCQ5010.............9x4.7SF Slo-Flyer

APCQ5016...........10x3.8SF Slo-Flyer

ElectriFly offers a full line of NiMH and LiPo
batteries. Air planes that use the Ammo 12mm
motors will typically use batteries with a
capacity of 340mAh to 640mAh, with the higher
capacity batteries delivering more flying time
but also being heavier. Most of the batteries
have connectors that fit the recommended
ESCs. We have also listed the connector
adapters needed for certain batteries.

Due to the constantly changing battery
technology, check out the ElectriFly web site at
www.electrifly.com for the most up-to-date
listing of the ElectriFly battery line.

GPMQ4950 1.5mm Collet Type
GPMQ4959 3mm Collet Type

GPMQ4620 3mm Prop Saver

(Included with Gearbox)