E-flite Power 46 User Manual

Power 46 Brushless Outrunner Instructions

Thank you for purchasing the E-flite Power 46 Brushless Outrunner motor. The Power 46 is designed to deliver clean and qui et power
for .40 to 46-size sport and scale airplanes, 25- to 40-size 3D airplanes, or models requiring up to 800 watts of power. It’s an especially
good match for Hangar 9® .40-size trainers like the Alpha .40 (HAN2450), Arrow .40 (HAN2625) and warbirds like the T-34 Mentor 40
(HAN2425). Also a great match for sport planes like the Ultra Stick 40 (HAN1675 or HAN1690), Seagull Spacewalker 40 (SEA2050),
and smaller sport 3D planes like the Twist 40 (HAN2650).

Power 46 Brushless Outrunner Features:

• Equivalent to a 40- to 46-size glow engine for 4- to 7-pound (1.8 - 3.2-Kg) airplanes

• Ideal for 25- to 40-size 3D airplanes up to 5-pounds (2.2 Kg)

• Ideal for models requiring up to 800 watts of power

• High torque, direct drive alternative to inrunner brushless motors

• Includes mount, prop adapters, and mounting hardware

• Quiet, lightweight operation

• External rotor design, 6mm shaft can easily be reversed for alternative mo tor installations

• High quality construction with ball bearings and hardened steel shaft

• Slotted 12-pole outrunner design

Power 46 Specifications

Diameter: 50mm (2 in)
Case Length: 55mm (2.15 in)
Weight: 290g (10 oz)
Shaft Diameter: 6mm (.24 in)

EFLM4046A

Kv: 670 (rpms per volt)
Io: 3.88A @ 10V (no load current)
Ri: .04 ohms (resistance)
Continuous Current: 40A*
Max Burst Current: 55A*
Watts: up to 800
Cells: 12-16 Ni-MH/Ni-Cd or 4-5S Li-Po
Recommended Props: 12x8 to 14x10
Brushless ESC: 60-Amp

* Maximum Operating Temperature: 220 degrees Fahrenheit
* Adequate cooling is required for all motor operation at maximum current levels.
* Maximum Burst Current duration is 30 seconds. Adequate time between maximum burst intervals is required.

Note: The 3.5mm Gold Bullet Connectors included on this motor are rated for current up to 60A. Please see our accessory parts listed
below for 4mm connector option if you are running more current than we recommend.

Determine a Model’s Power Requirements:

1. Power can be measured in watts. For example: 1 horsepower = 746 watts

2. You determine watts by multiplying ‘volts’ times ‘amps’. Example: 10 volts x 10 amps = 100 watts

Volts x Amps = Watts

3. You can determine the power requirements of a model based on the ‘Input Watts Per Pound’ guidelines found be low, using the flying
weight of the model (with battery):

• 50-70 watts per pound; Minimum level of power for decent performance, good for lightly loaded slow flyer and park flyer
models

• 70-90 watts per pound; Trainer and slow flying scale models

• 90-110 watts per pound; Sport aerobatic and fast flying scale models

• 110-130 watts per pound; Advanced aerobatic and high-speed models

• 130-150 watts per pound; Lightly loaded 3D models and ducted fans

• 150-200+ watts per pound; Unlimited performance 3D models

NOTE: These guidelines were developed based upon the typical parameters of our E-flite motors. These guidelines may vary
depending on other motors and factors such as efficiency and prop size.

4. Determine the Input Watts per Pound required to achieve the desired level of performance:
Model: Hangar 9 Ultra Stick 40 ARF

Estimated Flying Weight w/Battery: 6.0 lbs
Desired Level of Performance: 90-110 (100 average) watts per pound; Sport aerobatic

6.0 lbs x 100 watts per pound = 600 Input Watts of total power (minimum)

required to achieve the desired performance

5. Determine a suitable motor based on the model’s power requirements. The tips below can help you determine the power capabilities
of a particular motor and if it can provide the power your model requires for the desired level of performance:

• Most manufacturers will rate their motors for a range of cell counts, continuous current and maximum burst current.

• In most cases, the input power a motor is capable of handling can be determined by:

Average Voltage (depending on cell count) x Continuous Current = Continuous Input Watts
Average Voltage (depending on cell count) x Max Burst Current = Burst Input Watts

HINT: The typical average voltage under load of a Ni-Cd/Ni-MH cell is 1.0 volt. The typical average voltage under load of a Li-Po cell is

3.3 volts. This means the typical average voltage under load of a 10 cell Ni-MH pack is approximately 10 volts and a 3 cell Li-Po pack
is approximately 9.9 volts. Due to variations in the performance of a given battery, the average voltage under loa d may be higher or
lower. These however are good starting points for initial calculations.

Model: Hangar 9 Ultra Stick 40 ARF
Estimated Flying Weight w/Battery: 6.0 lbs
Input Watts Per Pound Required for Desired Performance: 600 (minimum)

Motor: Power 46
Max Continuous Current: 40A*
Max Burst Current: 55A*
Max Cells (Li-Po): 4-5

4 Cells, Continuous Power Capability: 13.2 Volts (4 x 3.3) x 40 Amps = 528 Watts

4 Cells, Max Burst Power Capability: 13.2 Volts (4 x 3.3) x 55 Amps = 726 Watts

Per this example, the Power 46 motor (when using a 4S Li-Po pack) can handle up to 726 watts of input power, readily capable of
powering the Ultra Stick 40 with the desired level of performance (requiring 600 watts minimum). You must however be sure that the
battery chosen for power can adequately supply the current requirements of the system for the required performance.

Battery Choices:

We recommend Thunder Power Li-Po batteries for the best performance and lowest weight (in some cases Ni-MH 1950-3700mAh
high-discharge packs also make good alternatives at the expense of weight and lo wer capacit y). Some examples of the packs we
recommend for use with the Power 46 motor can be found below:

THP42002S2PPL 4200mAh 2S2P 7.4V Li-Po,13GA
THP42003S2PPL 4200mAh 3S2P 11.1V Li-Po,13GA
THP53005S4PPL 5300mAh 5S4P 18.5V Li-Po,13GA
THP60004S3PPL 6000mAh 4S3P 14.8V Li-Po,13GA

Examples of Airplane Setups:

Please see our web site for the most up-to-date information and airplane setup examples.
NOTE: All data measured at full throttle. Actual performance may vary depending on battery and flight conditions.

Hangar 9 Ultra Stick 40 ARF (HAN1675 / HAN1690)

Option 1:

Motor: Power 46
ESC: Castle Creations Phoenix 60 (Standard settings with 12V Soft Li-Po cut off and no brake)
Prop: APC 13x8E
Battery: Thunder Power PRO LITE 6000mAh 4S3P (THP60004S3PPL)
Flying Weight w/Battery: 5.8 lbs

Amps Volts Watts Input Watts/Pound RPM

51.5 14.4 745 128 8250
Expect very strong performance with very short take off rolls and a great balance of thrust and top speed. Average duration is

approximately 12-20 minutes depending on throttle management.