Learn more - Maxx Products

Learn more - Maxx Products
Himax Brushless Outrunner Motor W/ Cooling Fan
1. Himax Brushless motors require brushless sensorless speed
Failure to use a brushless sensorless electronic
speed control (ESC) can result in damage to the motor and/or
ESC. A Castle Creations Phoenix ICE series ESC is recommended for best performance. The standard setting for timing advance is recommended and PWM rate should be
changed to 16Khz for best operation. For correct RPM logging, set the motor poles to 14.
The three wires of the motor can be connected to the three
output leads of the ESC in any order. Check the direction of
rotation of the motor. If the motor spins in the wrong direction
switching any two of the motor wires will reverse rotation. Be
sure to insulate the wires to prevent shorting which may damage the ESC.
Do not shorten the motor wires. Shortening or cutting the
motor wires voids the warranty and may cause motor failure. If
the supplied connectors are not to be used, remove them by
Accessories (included):
1 - Prop Adapter
3 - Female 3.5mm connector
4 - Motor Mounting Screws
1 - Motor Mount Kit
3 - Hex Keys
Allow for proper cooling of the motor during operation. With
extremely high capacity batteries, care must be taken to prevent excessive motor temperature. Overheating of the motor
is not covered under warranty. Insufficient cooling can result in
overheated motors, even when operated at moderate power
High Efficiency - High Power - High Torque - Lightweight
Do not disassemble the motor. Disassembling the motor voids
the warranty. If service is required please return the unit to
Maxx Products for service.
Install the propeller after proper rotation has been determined.
Consult the ESC operation manual for proper arming and use
procedures. Be sure the prop is clear before starting the motor. Once the battery is plugged in stay clear of the prop, electric motors are capable of extremely high torque and can be
very dangerous.
Verify the current draw. Excessive current draw will overheat
and damage the motor. Overheating is not covered under warranty. The current must be within limits at full throttle. Verify
the power consumption. Certain setups will run into the power
limit before the current limit. Observe the current and power
limits, which ever comes first. The 15-second max current rating is for limited motor run applications. Excessive use at
high throttle settings when set up for the 15 second rating will
overheat the motor. Allow for adequate cooling between bursts.
Himax Brushless motors are manufactured to high standards
for the discerning modeler. Designed for lightweight, high efficiency,
high torque, and durability Himax Outrunner motors are sure to make
today’s radio controlled models perform. Please read the entire
operating manual to ensure correct functionality and best performance. The HC3514-2900 motor is specially designed for the
MuliPlex Fun-Jet Ultra prop-jet model weighing 31oz. or any high
speed model weighing 20-40 oz.
Weight: 103g, (3.63oz), Motor only
Max Power: 800W, (This is dependent on several factors)
Max RPM: 40,000 RPM
Diameter: 35.2mm, (1.39”)
Length: mm, 38mm(1.5”)
Shaft Diameter: 4.0mm (5/32”)
Mount Screws: M3, max depth 5mm, on 25mm, (1.0”) circle
Maximum Case Temperature: 65oC, (149oF)
Electrical Specifications:
HC3514-2900 Kv = 2900, Rm = .0076, Io = 4.8
Efficient Operating Current = 25-80A, 90A Max 15 seconds
Recommended Accesories:
75 or 100 Amp Brushless Speed Control (depending on propeller
7.4-11.1V Lithium Polymer Battery, capable of 90-100 Amps, Use
of 14.8 volt (4S) Lithium Polymer battery will void the warranty
Phone: (847)438-2233 Fax: (847)438-2898 Website: www.maxxprod.com
REV: _ , 09/19/2012
HC3514-2900 Current vs. Volgage with Propeller
Reversing the Shaft:
1. First of all, never use a hammer or heavy object to pound or tap
on the motor. Sharp impact will damage ball bearings and other
2. Use an alen wrench to remove the setscrews in the endbell
(fan rotor). The setscrews may be tight because thread locker
is used to secure them. Heating with a heat gun will soften the
thread locker. Then move the snap ring to the outer groove.
3. In order to maintain critical balance, the shaft fits tightly in the
rotating endbell. Use an arbor press or drill press to exert steady
pressure to push it through endbell. Before applying pressure,
make sure the press and shaft are aligned. Avoid using a vise
because it is difficult to maintain proper alignment with a vise.
Press through until there is just light pressure against the
snap ring. Too much pressure will damage the bearings.
4. There are flats on the shaft. Align the flats with the set screws,
and tighten. If you wish to use thread locker, use only a
removable type and use sparingly.
Removing the Shaft:
1. Follow procedure as above except REMOVE the snap ring.
2. Separate the stator assembly and rotor assembly. This may
be tight because thread locker sometimes seeps between the
shaft and ball bearing. Press out the old shaft (see #3 above)
then press in the new shaft.
3. There are flats on the shaft. Align the flats with the set screws,
and tighten.
6. Put the rotor and stator assemblies back together and reinstall
the snap ring. If you wish to use thread locker, use only a
removable type and use sparingly.
Brushless motors are almost maintenance free, so minimal
care is required for long life. Keep the motor clean free of dust
and dirt, especially the bearings. Dirty bearings wear quickly.
Lubricate the bearings regularly with light oil. Do not immerse
the motor in water, or solvents. Do not bend the wires excessively
and secure wires to prevent breakage due to fatigue from vibration. Always used balanced propellers to reduce loads on bearings, to reduce noise, and reduce stress on the airframe.
Reading the Chart
The graph represents the HC3514-2900
operating range. Current ratings are noted
on the front of this manual. The suggested
props are not a recommendation for any
specific airframe or flying style. The graph
does give a range of props to work with and
an idea of the current draw. The chart assumes APC Electric series propellers. First,
approximate the operating voltage, 1-1.1
volts per NiXx cell or 3.5 volts per Lithium
cell. As an example we are using an 3 cell
LiPo pack. 3 x 3.56= 10.8V. Follow along
the 10.8V line up the chart. If using a 6X5.5
prop this motor will draw approximately 74A.
This would be acceptable for full throttle
continuous flight on a small high speed
airframe. Note: this motor is designed to
use 2 or 3 cell LiPo. Use of a 4 cell LiPo
(over 12 volts) will void the warranty.
Choosing a power system:
Power system can be chosen based on the type of flying expected of the model and all up weight of the aircraft. Sedate flying
from a hand launch requires 35 watts per pound(W/Lb). Taking off
the ground needs approximately 50W/Lb. Aerobatics and good
climb performance, 75W/Lb. Anything more than 75W/Lb will
result in excellent performance. Based on the weight of the model
and the flying desired, the power require can be calculated. Select the voltage of the battery being used. It is best to use a loaded
voltage of about 98% of nominal. Now, calculate the current required. From the chart, pick a motor at the voltage you intend to
use and find the prop that pull the required current.
Propeller selection:
Use the chart to start with propeller selection. It is a starting
point. If you intend to use different props or battery voltage we
recommend testing several setups and make sure to Verify current draw when testing. Failure to do so may damage the
motor and will void the warranty. Different models use differnt
props. Most sport models will use a prop with a P/D or 0.6-0.8.
Models that are designed to fly at high speed or have other special requirements will use props in the 1.0 P/D range. The highest static thrust will be available from the 0.6 P/D props, but they
have limited top speed. Highest speeds can be attained with 1.0
P/D props, however low speed thrust and acceleration is limited.
Himax motors have a two year limited warranty to the original
owner, excluding gearboxes. All motors are guaranteed to be free
from manufacturing defects within two years of date of purchase.
Not covered under warranty is crash damage, customer abuse,
improper use, or overheating. Note use of 4 cell LiPo would
constitute Improper Use. Warranty claims should be handled
directly with Maxx Products, 815 Oakwood Rd, Unit D, Lake Zurich,
IL 60047. Be sure to include contact information and a description of the problem including which ESC, battery, and prop was
being used. If possible visit www.maxxprod.com to obtain a service form.
Himax motors in need of service should be sent to Maxx
Products, 815 Oakwood Rd, Unit D, Lake Zurich, IL 60047.
Please include a note explaining the problem. Return shipping
for repair estimates must be prepaid.
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