Maxford USA HUGHES H-1 User manual

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HUGHES H-1
INSTRUCTION MANUAL
Shown with optional electric motor, propeller,
and retractable landing gear.
Specifications:*
Wingspan ............................................................................................................... 40 inches
Wing Area ...................................................................................................... 320 sq. inches
Length .................................................................................................................... 33 inches
ARF weight ................................................................................................................. 25 oz.
Flying weight ..................................................................................................... 28 to 31 oz.
Motor (Not included) ................................... Brushless, Outer-Rotor, 277W, 1,280 RPM/V
(Recommended motor: Uranus 28309 or equivalent)
Brushless ESC w/BEC (Not included) ........................ Uranus Brushless 25A or equivalent
Propeller (Not included) ......................................................................................... EP 10×5
Battery (Not included) ................................ 11.1V 1,300 to 2,100 mAh, 20C Li-Po battery
Radio system (Not included) ............................ Minimum of 4 channels with 3 mini servos
Or, if you install the optional retracts ................................. 5 channels with 4 mini servos
(Recommended servos: 3 Maxford USA SG-90 or Hitec HS-65HB, plus 1 Hitec HS-82MG for
retracts, or equivalent)
*(Dimensions and weights are approximate.)

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Congratulations on your acquisition of Maxford USA’s version of the Hughes H-1 from the Golden Age
of Aviation – the 20-year period between the end of World War I and the beginning of World War II.
The H-1 was Hughes Aircraft Company’s first aircraft. Though originally conceived simply for speed, the H-1 had many
new features that influenced the design of high-performance aircraft for years, including …
•Retractable landing gear.
•Gently curving wing fillets between the wing and the fuselage to help
stabilize airflow, reduce drag, and prevent potentially dangerous eddying
and buffeting.
•Rivets and joints made flush with the aircraft’s aluminum skin.
•The ailerons could be drooped 15 degrees when the flaps were fully
extended, improving lift along the full length of the wing for takeoffs
and landings.
With Howard Hughes at the controls in 1935, the H-1 succeeded in breaking
the world land-plane speed record, clocking 352 mph over a specially
instrumented course near Santa Ana, California. Hughes then set a
transcontinental speed record, flying his H-1 at an average speed of 322 mph,
non-stop from Los Angeles to New York City in 1937. The original H-1 was
donated to the Smithsonian National Air and Space Museum in 1975, where it
remains on display in the Golden Age of Flight gallery.
After nearly 2 years in development, this model of the H-1 is smooth and stable at both low and high speeds. True to the
original, all of the rudder, elevator and aileron linkages are fully concealed within the fuselage, giving this model a more
scale-like, streamlined appearance. This Hughes H-1 model also includes a spring-loaded tail wheel, magnetic battery hatch,
scale fixed landing gear plus the option to easily add retractable landing gear, and a new “Max Cowling” fiberglass cowl.
(Developed by Maxford USA for RC airplanes, "Max Cowling” is a new technology to preserve the cowl’s smooth, scale-like
appearance and to make removal and reattachment quick and easy. With this technology, just push and twist, and the cowl is
safely secured with 3 screws and a magnet.)
Enjoy the pride of ownership and the joy of flying this high-quality model of the famous Hughes H-1!
TABLE OF CONTENTS
Important Safety Precautions .................................... 2
Warranty, Liability Waiver, and Return Policy ......... 3
Special Features of this Hughes H-1 model .............. 4
Parts List .................................................................... 4
Power System ............................................................ 5
Tail Group and Canopy .......................................... 6
Aileron Servo and Landing Gear ......................... 10
“Max Cowling” and Propeller .............................. 12
Attach the Wing, and Final Setup ........................ 12
Final Checks Before Flying .................................. 13
IMPORTANT SAFETY PRECAUTIONS
TO PROTECT YOUR MODEL, YOURSELF & OTHERS
1. This product should not be considered a toy, but rather a sophisticated working model that functions much like a full-scale
airplane. Because of its performance capabilities, this product, if not assembled and operated correctly, could cause injury
to you or spectators and damage to property. Maxford USA provides you with a high-quality, thoroughly tested model
airplane kit with assembly instructions. However, the quality and capabilities of your finished model airplane depends on
how you build it, and your safety depends on how you use and fly it. Any testing or flying of this model airplane is done
entirely at your own risk.
2. Assemble the model airplane according to the instructions. Take time to build it STRAIGHT, TRUE and STRONG. We
recommend that you do not alter or modify the model, as doing so may result in an unsafe or unworkable model. In a few
cases the instructions may differ slightly from the photos. In those instances the written instructions should be considered
as correct. If you have any question about the instructions, before you proceed with assembly of this product, contact us at
[phone], Monday through Friday, except national holidays, between 8:30 AM to 5 PM Pacific time. [Continued.]

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3. Install the R/C system and other components in such a way that this model airplane passes all ground safety/range tests and
ensure that all controls operate smoothly and correctly.
4. Check the operation of this model airplane before every flight to ensure that all equipment is still operating correctly and
that the model has remained structurally sound. Also before every flight, check the clevises and other connectors and
replace any found damaged or defective.
5. If you are not an experienced R/C pilot or have not flown this type of model before, we recommend that you get the
assistance of an experienced R/C pilot.
6. Throughout the lifetime of this model, use only the supplied Maxford USA or same-sized motor, electronic speed control,
and a new or well-maintained R/C radio system and recommended Li-Po battery.
7. While this kit has been flight-tested to meet or exceed our rigid performance and reliability standards in normal use, if you
plan to perform any extremely high-stress flying, such as racing or advanced aerobatics, or if you plan to install a larger
motor than included, you (the buyer or user of this product) are solely responsible for taking steps to reinforce the high-
stress points and/or substitute hardware that is more suitable for such increased stresses.
8. LITHIUM BATTERY HANDLING & USAGE: WARNING!! Read the entire instruction sheet included with the battery.
Failure to follow all instructions could result in permanent damage to the battery, its surroundings, and bodily harm! If you
crash this model airplane, check whether the Li-Po battery is damaged. Do NOT use or charge a damaged Li-Po battery.
ONLY use a Li-Po approved charger.
(NEVER use a NiCd/NiMH charger!)
ALWAYS set the charger’s output to match the battery’s
voltage and mAh ratings.
ALWAYS charge through the battery’s “charge” connector.
(NEVER charge through the “discharge” leads.)
ALWAYS charge in a fireproof location.
NEVER place on combustible materials or leave unattended
during charge or discharge.
NEVER charge in excess of 4.2V per cell.
NEVER discharge below 2.5V per cell.
NEVER allow battery temp. to exceed 150° F (65° C).
NEVER charge at currents greater than 1C (for example,
in the case of a 1,300 mAh battery, that’s 1.3 amps).
NEVER trickle charge.
NEVER disassemble or modify pack wiring in any way
or puncture cells.
ALWAYS KEEP OUT OF REACH OF CHILDREN.
9. This model of the Hughes H-1 includes some carbon-fiber reinforced and fiberglass parts. Be warned that carbon-fiber and
fiberglass dust may cause eye, skin and respiratory tract irritation. So, if you grind, drill or sand such parts, always wear
safety goggles, a particle mask and rubber gloves, and never blow into such a part to remove carbon-fiber or fiberglass
dust, as the dust may blow back into your eyes.
WARRANTY, LIABILITY WAIVER, AND RETURN POLICY
Maxford USA guarantees this kit to be free from defects in material and workmanship at the time of purchase. All of our
products have been inspected in our factory and are checked again when shipped from our warehouse.
However, Maxford USA cannot directly control any of the materials you may use nor your final-assembly process. Therefore,
Maxford USA CANNOT in any way guarantee the performance of your finished model airplane. Furthermore, in purchasing this
product, you (the buyer or user of this product) exempt, waive, and relieve Maxford USA from all current or future liability for
any personal injury, property damage, or wrongful death, and if you (the buyer or user of this product) are involved in any claim
or suit, you will not sue Maxford USA or any of its representatives.
If you do not fully accept the above liability and waiver, you may request a return merchandise authorization number (RMA#) as
explained in item 2, below.
If you think there is any shipping damage or missing part(s), please read our after-sales service and return policy as outlined
below.
1. Inspect your order upon delivery for any shipping damage or missing part. If you find a problem you must contact us within
10 days from receipt of your purchase by calling [phone], Monday through Friday, except holidays, between the hours
of 9:30 AM and 5 PM Pacific time. During this telephone conversation, and with your support, we will determine how to
resolve your concern. (Note: Maxford USA Li-Po batteries are sold without warranty and are not eligible for return or
credit.) [Continued.]

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2. To request an RMA#, call [phone], Monday through Friday, except holidays, between the hours of 9:30 AM to
5 PM Pacific time. If we elect to issue you an RMA#, you must clearly mark this RMA# on the outside of the package.
(No return or exchange will be authorized after 10 days from the date of your receipt of the product; any package delivered
to us without a Maxford USA RMA# is subject to being returned to the sender, as received, with return postage payable
upon delivery.) Returned merchandise must be in its original condition as received from Maxford USA, with no assembly
or modification, in the original packing materials, complete with all manuals and accessories. Return shipping and
insurance charges must be prepaid by you, the buyer.
3. Returned merchandise that is accepted by Maxford USA for credit is subject to a 10% to 20% restocking fee (the final
amount will be determined by Maxford USA upon receipt and examination of the returned merchandise).
Return Address:
Maxford USA RC Model Mfg, Inc.
15247 Texaco Avenue
Paramount, CA 90723-3917
(IMPORTANT: If issued by Maxford USA RC Model Mfg, Inc., print the RMA# on the package near the
above address.)
SPECIAL FEATURES OF THIS HUGHES H-1 MODEL
•New “Max Cowling” fiberglass cowl.
•Completely pre-covered & pretrimmed.
•All control surfaces prehinged and most mounting openings predrilled or precut.
•All rudder, elevator and aileron control linkages are fully concealed within the fuselage.
•Scale fixed landing gear – plus the option to easily add retractable landing gear.
•Spring-loaded, steerable tail wheel.
•The battery hatch is secured by rare-earth magnets.
PARTS LIST
1. Items you must supply to complete the Hughes H-1:
•Outer-rotor motor and matching electronic speed control (ESC) with battery eliminator circuit (BEC).
•EP 10x5 propeller.
•3-cell, 1,300 to 2,100 mAh, 20C Li-Po battery.
•Battery charger compatible with the Li-Po battery.
•Electrical connectors with heat-shrink tubing for battery to ESC and ESC to motor.
•Receiver and transmitter with a minimum of 4 channels for aileron, elevator, rudder and throttle
(5 channels if you install the optional retracts).
•3 ea. SG-90, Hitec HS65HB or equivalent mini servos (plus 1 ea. Hitec HS-82MG servo if you use the
optional retracts).
•6-inch servo-wire extension (1 ea. with fixed gear; 2 ea. with optional retracts).
•Thin cyanoacrylate (CA) adhesive and windshield glue.
•Masking tape, Velcro or equivalent adhesive-backed hook-and-loop material, and common hand tools.

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2. Items included in the Hughes H-1 package:
Preformed fixed main landing gear
wires; pushrods with pre-formed Z-
bends; wheels; pre-trimmed
cockpit canopy; empennage
fairings; vertical and horizontal
stabilizers (with pre-hinged
elevator); wing with pre-hinged
ailerons and landing gear mounts
(prepared for either the supplied
scale, fixed landing gear, or easy
installation of the optionally
available retractable landing gear);
“Max Cowling” fiberglass cowl
assembly; motor mount pylon; and
fuselage with preinstalled wing
fairings and wing-bolt blind-nuts.
Items also included but not shown
in this photo: Magnetic battery
hatch;
pull/pull rudder and tail wheel control assembly; tail wheel and aileron linkages; all required control horns; wheel
collars; fixed-landing-gear retainers; preassembled spring-loaded steerable tail wheel; wooden empennage/fairing
reinforcements; self-threading screws (except those supplied with motor and servos); and this illustrated
instruction manual.
HUGHES H-1 ASSEMBLY INSTRUCTIONS
Step 1: Power system.
1. Solder connectors to the motor’s and the ESC’s matching sets of 3 hi-current wires, and solder a polarized
connector to the ESC’s and battery’s red and black leads. If your connectors are not already fully insulated, cover
exposed metal surfaces at each connection with heat-shrink tubing to prevent short circuits. (At this time leave
the motor’s 3 wires NOT connected to the ESC’s 3 wires, do NOT connect the ESC to the battery, and do NOT
attach a propeller to the motor.) Set aside the ESC and the battery.
2. Using the predrilled holes in the motor-mount pylon and 4 screws provided by the motor’s manufacturer, attach
the motor to the front, outside of the motor-mount pylon. Connect the
motor’s 3 wires to the ESC’s 3 wires, plug the ESC’s 3-wire
BEC/throttle connector into the receiver’s throttle channel, connect
your aileron, elevator and rudder servos to the receiver, and check the
motor’s rotation (and center your servos) as follows …
a. If you are using a computer radio, ensure the transmitter’s “end
point adjustments” are set to their normal, full-range settings. Set
the transmitter’s throttle and throttle trim controls to minimum and
center the transmitter’s aileron, elevator and rudder trim controls.
With NO PROPELLER on the motor, switch ON the transmitter.
b. Connect the ESC to the battery and listen for a series of initialization
sounds from the ESC, and the aileron, elevator and rudder servos should travel to their centered positions. Then,
raise the transmitter’s throttle stick approx. halfway up, and the motor should power-up in the clockwise
direction as viewed from the rear of the airplane. If so, proceed to step 3.
c. If the motor powered-up in the counterclockwise (wrong) direction as viewed from the rear of the airplane,
return the throttle control to minimum, disconnect the ESC from the battery, swap either 2 of the 3 ESC to
motor wires, and repeat “a” and “b” above to ensure the motor rotates in the correct direction.