Great Planes Ammo 36mm Power System - GPMG5240-5325 - Manual (Page 2)

GEARBOX PROPELLERS
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 a 36mm
Large Gear Drive (GPMG0515) with several
pinions that allow for the following gear ratios:
Spur Gear GPMG0668 ........ 70 tooth
GPMG0672 ........ 90 tooth
Pinion Gear GPMG0637 ........ 14 tooth
GPMG0643 ........ 20 tooth
Low Ratio> 6.4:1, 5:1, 4.5:1, 3.5:1 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
draw excessive current and overheat.
The 36mm Large Gear Drive is designed to fit the
Great Planes Large Motor Mount (GPMG1260).
1. Aluminum Front Plate (1)
2. Aluminum Back Plate (1)
3. 2.5x18mm FH Machine Screw (2)
4. 6x11mm Aluminum Spacer (4)
5. 70 Tooth Spur Gear (1)
6. 90 Tooth Spur Gear (1)
7. 3x23mm SHC Screw (2)
8. 3mm Star Washer (2)
9. 14 Tooth Pinion Gear (1)
10. 20 Tooth Pinion Gear (1)
11. 6mm Collet Type Prop Adapter (1)
12. 3x8mm Machine Screw (5)
PROPELLER ADAPTERS
GPMQ4939 5mm Set Screw Type
GPMQ4942 6mm Set Screw Type
GPMQ4966 5mm Collet Type
GPMQ4968 6mm Collet Type
The 36mm Large Gear Drive uses a 6mm
prop adapter. If you will be using the 36mm
Ammo Motor without a gear drive, it requires
a 5mm prop adapter.
There is a wide selection of propellers available
for electric use. The 36mm 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.
APCQ4110.............8x4 Electric
APCQ4115.............8x6 Electric
APCQ4118.............9x6 Electric
APCQ4120...........10x5 Electric
APCQ4123...........10x7 Electric
APCQ4128...........11x7 Electric
APCQ4129...........11x8 Electric
APCQ4130...........12x6 Electric
APCQ4133...........12x8 Electric
APCQ3065...........13x6.5 Electric
APCQ3080...........13x8 Electric
APCQ4145...........14x7 Electric