User Manual

Congratulations, you have just purchased the
Ammo 28mm power system components. All
the components are sold separately to allow
you to customize your power system to your
air plane. The components needed to assemble
your Ammo 28mm power system are: Ammo
28mm motor , 28mm Medium Gear Drive , 28mm
Motor Mount, propeller, propeller adapter and
brushless speed control. This instruction sheet
explains how to determine what you will need
and how to assemble each component.
AMMO 28mm PO
AMMO 28mm PO
WER SYSTEM
WER SYSTEM
by Great Planes
®
Model Stock #
28-35-2200 ...............GPMG5190
28-35-2700 ...............GPMG5195
28-35-3900 ...............GPMG5200
28-35-5100 ...............GPMG5205
28-45-2100 ...............GPMG5210
28-45-2700 ...............GPMG5215
28-45-3600 ...............GPMG5220
28-56-1530 ...............GPMG5225
28-56-2300 ...............GPMG5230
28-56-3200 ...............GPMG5235
The Ammo motors are labeled to provide the
most inf ormation at a glance. For e xample: the
28-45-2700kV is 28mm in diameter, 45mm
long and has a kV (rpm-per-volt) of 2700 rpm.
27.5mm
3.175mm
35mm, 45mm
OR 56mm
15mm
19mm
16mm
3mm
MOUNT
SCREW
Motor Output Shaft
Diameter x Length: 3.2x15mm [.125" x .56"]
Weight (35mm): 93g [3.3oz.]
Weight (45mm): 133g [4.6oz.]
Weight (56mm): 166g [5.9oz.]
MOTORS
The ElectriFly Ammo motors have high kVs
meaning that they like to run at very high r pm.
A gear drive is used in order to reduce the rpm
allowing a larger, more efficient propeller to be
used. Great Planes ElectriFly offers a 28mm
Medium Gear Drive (GPMG0510) with se veral
pinions that allow for the following gear ratios:
Low Ratio> 5:1, 4.5:1, 4.2:1, 4:1, 3.6:1, 3.3:1,
3.1:1, 2.8:1, 2.5:1, 2.2:1, 2:1 <High Ratio.
If you use a prop that is too small with a gear
ratio that is too low, the motor will draw very
little current and the prop will turn at too low of
an rpm to produce any usable power. The
higher the gear ratio, the smaller the prop will
need to be and the higher the rpm will be. If the
gear ratio is too high for the prop used, the
motor will dra w excessiv e current and overheat.
The included chart, on the inside of the header
card, shows the motor/prop/gear ratios that
have been tested and found to work well.
The 28mm Medium Gear Drive is designed to
fit the Great Planes 28mm Motor Mount
(GPMG1255).
GEARBOX
The ElectriFly Brushless Medium Motor
Mount combines the ease of installation with
the adjustability to fit most motor applications.
The Medium Motor Mount is designed to fit
the bolt pattern of the Great Planes .20-.48
and .40-.70 Nylon Engine Mount. This easily
allows the conversion of a glow powered
plane to electric powered.
1. Front Plate (1)
2. Back Plate (1)
3. 4-40x1/4" SHC Screw (8)
4. #4 Flat Washer (10)
5. Motor Bracket (1)
6. 4-40x1/2" SHC Screw (2)
7. 4-40 Lock Nut (2)
BRUSHLESS MEDIUM MOTOR MOUNT
An ESC is basically the device that controls
your motor through your radio system. Never
run any Ammo 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 Brushless ESCs that will
work with the Ammo 28mm motors.
ELECTRONIC SPEED CONTROL (ESC)
1. Aluminum Front Plate (1)
2. Aluminum Back Plate (1)
3. 2.5x17mm FH Machine Screw (2)
4. 5.5x11mm Aluminum Spacer (4)
5. 40 Tooth Spur Gear (1)
6. 50 Tooth Spur Gear (1)
7. 3x20mm SHC Screw (2)
8. 3mm Flat Washer (2)
9. 11 Tooth Pinion Gear (1)
10. 16 Tooth Pinion Gear (1)
11. 4mm Collet Type Prop Adapter (1)
12. 3x6mm Machine Screw (4)
The Ammo Motor/Silver Series ESC
combination can use NiMH or LiPo batteries.
Typically, NiMH batteries are heavier b ut much
more aff ordable for the same capacity as LiPo
batteries. If you want a very light, high-
performance 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
3-cell LiP o . This means the cells are connected in
SERIES (S). Arranging batteries in series gives
you more power (higher voltage).
• Each NiMH cell has 1.2V, so an 8-cell
NiMH batter y has 1.2x8 = 9.6V
• Each LiPo battery has 3.7V, so a 3-cell
LiPo batter y has 3.7x3 = 11.1V
If you need a higher voltage than what is
available in the LiPo batter y line, you will need
to connect two battery packs together in series.
If you need a battery voltage of 14.8V you can
use the series Y-connector (GPMP3143) to
connect two 7.4V batteries together.
If a battery is arranged in PARALLEL it might be
labeled as (P). Arranging the batteries in parallel
will give you more duration (more capacity).
BATTERIES: NUMBER OF CELLS
There is a wide selection of propellers
available for electric use. The 28mm Ammo
Motors use high performance electric props
such as the APC E-series 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-to-
date listing of electric type props.
PROPELLERS
The 28mm Medium Gear Drive uses a 5mm
prop adapter. If you will be using the Ammo
28mm Ammo Motor without a gear drive, it
requires a 3.17mm Prop Adapter.
PROPELLER ADAPTERS
GPMQ4933 3.175mm Set Scre w Type
GPMQ4939 5mm Set Screw Type
APCQ4115 .............8x6 Electr ic
APCQ4118 .............9x6 Electr ic
APCQ4119 .............9x7.5 Electr ic
APCQ4120 ...........10x5 Electr ic
APCQ4123 ...........10x7 Electr ic
APCQ4128 ...........11x7 Electr ic
APCQ4129 ...........11x8 Electr ic
APCQ4133 ...........12x8 Electr ic
APCQ4136 ...........12x10 Electr ic
APCQ3065 ...........13x6.5 Electr ic
APCQ3080 ...........13x8 Electr ic
APCQ4140 ...........13x10 Electr ic
APCQ4145 ...........14x7 Electr ic
APCQ1409 ...........14x10 Electr ic
APCQ4013 ...........15x8 Electr ic
APCQ4014 ...........15x10 Electr ic
APCQ4015 ...........16x8 Electr ic
APCQ4018 ...........17x8 Electr ic
APCQ4019 ...........17x10 Electr ic
Battery # of
Stock # Voltage Capacity Weight Type Cells
GPMP0616 7.4V 2100mAh 4.3oz (121g) LiPo 2
GPMP0617 11.1V 2100mAh 6.4oz (181g) LiPo 3
GPMP0622 7.4V 3200mAh 6.3oz (179g) LiPo 2
GPMP0623 11.1V 3200mAh 9.5oz (269g) LiPo 3
GPMP0350 7.2V 2000mAh 8.5oz (240g) NiMH 6
GPMP0351 8.4V 2000mAh 12.2oz (345g) NiMH 7
GPMP0352 9.6V 2000mAh 13.7oz (390g) NiMH 8
GPMP0353 12V 2000mAh 16.7oz (475g) NiMH 10
GPMP0361 8.4V 3600mAh 17.5oz (497g) NiMH 7
GPMP0362 9.6V 3600mAh 19.9oz (564g) NiMH 8
GPMP0363 12V 3600mAh 24.8oz (702g) NiMH 10
GPMP0364 14.4V 3600mAh 29.6oz (840g) NiMH 12
ElectriFly offers a full line of NiMH and LiPo
batteries. Airplanes that use the AMMO 28mm
motors will typically use batteries with a
capacity of 2000 to 3600mAh with the higher
capacity batteries delivering more flying time
but also being hea vier. All of the batteries have
connectors that fit the recommended ESCs.
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.
GPMQ4962 3.175mm Collet Type
GPMQ4966 5mm Collet Type
The SS-25 and SS-35 come with 3.5mm f emale
bullet connectors that plug directly into the
3.5mm male connectors installed on the Ammo
28mm motors, so no soldering is required. 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 SS-45 comes with 4mm motor connectors
and require 4mm to 3.5mm bullet connector
adapters (GPMM3123).
™
™
Silver Series 25 (SS-25) ESC (GPMM1820)
for 25A maximum constant current draw.
Silver Series 35 (SS-35) ESC (GPMM1830)
for 35A maximum constant current draw.
Silver Series 45 (SS-45) ESC (GPMM1840)
for 45A maximum constant current draw.
Ammo 28mm 4fold.qxd 6/15/2006 12:03 PM Page 1