RCU Review: Great Planes Combat Spitfire ARF

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    Contributed by: Greg Covey | Published: October 2007 | Views: 83322 | email icon Email this Article | PDFpdf icon
    Great Planes Combat Spitfire

    Review by: Greg Covey
    Flying Photos: Papa Jeff Ring
    Video Pilot: Lynn Bowerman


    Dealer Info
    Combat Spitfire ARF
    Distributed exclusively by:

    Great Planes Model Distributors
    P.O. Box 9021
    Champaign, IL 61826-9021

    Website: www.greatplanes.com

    Available at your
    Local Hobby Shop


    Many Build Options
    Great ARF value and looks
    Scale Flying Performance
    All Hardware Included
    Perfect Balance when Electric-powered
    Spare Parts Available

    Nose-heavy when glow powered

    Great Planes Combat Spitfire

    RimFire Electric Power Setup

    The Great Planes Combat Spitfire GP/EP ARF is "a sport warbird for everyone!" This is because it can be built up with either glow or electric power. When powered by a glow engine, it is AMA Event 750, Combat Class 2610 legal. This versatile MonoKote-covered, built-up balsa/ply ARF can be flown for sport-scale fun or compete in combat events. The flexible design of the Combat Spitfire also provides a choice of top or bottom aileron servo mounting and optional landing gear included in the almost-ready-to-fly kit.

    2-stroke .25 cu in Glow Setup


    • Wingspan Area: 272 in2 (17.5 dm2)
    • Weight: 40-48 oz (1.13-1.36 kg)
    • Wing Loading: 21-25 oz/ft2 (65-78 g/dm2)
    • Length: 35.5 in (895 mm)
    • Radio Required: 4-channel radio w/4-5 micro servos
    • Glow Engine Required: 2-stroke .25 cu in (4 cc)
    • Electric Motor Requirements: 1450kV out-runner brushless motor; 45A brushless ESC; 11.1V 3200 mAh LiPo battery

    Key Features:

    • High quality, built-up balsa/ply construction, covered in MonoKote film
    • Includes mounting components for either glow or electric power
    • AMA Event 750, Combat Class 2610 legal (when used with recommended glow set-up)
    • One-piece wing with plywood wing joiner
    • 2.25" (57.15mm) diameter white spinner included
    • Pre-painted, fiberglass cowling
    • Ready to fly in only 7-10 hours!

    ARF Contents

    Great Planes includes a fiberglass cowl and lightweight, balsa/ply main structures covered in MonoKote? film. The Spitfire comes already covered with five colors of MonoKote film that represent a typical trim scheme of the World War II Allied fighter. Decals shown are included and die-cut for easy application. You can assemble this model for belly landings or with the fixed wire landing gear provided ? and mount your aileron servos and linkages on the top or bottom of the wing.

    For my review, I'll be using a RimFire brushless electric power system. This is made from a GPMG4600 Great Planes Rimfire 35-30-1450 out-runner brushless motor, GPMM1840 Great Planes Silver Series 45A brushless ESC, and a GPMP0623 ElectriFly 3200mAh (20C) 3-cell LiPo battery.

    The Spitfire requires four strong servos like the HCAM0111 Hobbico CS-12MG Servo with Hi-Speed and Metal Gears.


    The assembly begins by attaching the ailerons to the wing halves with thin CA.

    It is then time to decide what you plan to do with the Spitfire and how you plan to land it. There are servo bays in both the top and the bottom of the wings. If you plan to use the Spitfire for sport flying, you may want to install the optional landing gear and mount the servos on the bottom of the wing. If you plan to use the Spitfire for combat, you may choose to not install the optional landing gear and mount the servos on the top of the wing for smoother belly landings on grass. The assembly is the same for either mounting choice.

    Since I decided that I would be belly landing my Spitfire on grass, I mounted the aileron servos on top of the wing. Simple painting of the servo and control horn can help hide the components in the air. Instead of using the Futaba (FUTM3910) 6" servo extensions, I choose a Hobbico (HCAM2751) Heavy-Duty Y-harness to lengthen the servo leads and join them to a single channel.

    Motor Mounting:

    To install the RimFire Brushless Outrunner motor, you build up the motor mount adapter from laser-cut parts. I used CA to hold it initially together and then reinforced the joints with epoxy. All the parts fit perfectly and the instructions in the manual are very detailed with plenty of photos. Note the built-in cooling system for the electric power version that allows air flow from the firewall out the bottom of the fuselage. The ESC is mounted to a plywood plate that sits right in the air flow.

    Great Planes offers connector adapters to avoid people having to solder on the correct mating size. The item is GPMM3123 for a set of three adapters. As an alternative, I choose to solder the mating connectors that come with the RimFire motor onto the Silver Series ESC after first removing the existing connectors.

    Tail Assembly:

    The tail assembly was straight forward and the instructions had plenty of detail. If you follow the instructions, the split elevator halves assemble quite easily. Note that I routed the antenna wire through the fuselage and out the aft end. A little grey paint helps hide the control horns.

    Battery Tray:

    The inside of the fuselage has a battery tray and a receiver tray glued in place for the electric power version. I used some ty-wraps to secure the receiver instead of the supplied rubber bands. The receiver is also held with servo tape on the bottom.


    The servos mounted without issue and my only deviation from the stock setup was to eliminate the supplied quick links and use Z-bends where the control rods attach to the servo arm. As long as you center the servos electronically first, any offset needed to trim the elevator and rudder can be done on the transmitter. The Z-bends cannot slip in flight.

    Cowl, Prop, and Spinner:

    The cowl was mounted using the masking tape alignment scheme in the manual. It provided excellent alignment. Some thin CA was added to the holes in the fuselage to help harden the wood.

    The stock white spinner backplate and APC 9x6 Sport Propeller fit perfectly on the RimFire prop adapter without any drilling needed. I decided to try the glow prop as it fit without drilling and also added to the rugged look of the Combat Spitfire. If the glow prop proves not to be efficient on the RimFire electric motor, I'll replace it with an APC 9x6 e-prop.

    Note that I added an oval opening in the cowl bottom, per the manual, to help provide cooling air flow. A Dremel tool makes this an easy task.


    The pre-painted canopy was glued in place using RC 56 canopy glue.


    The Spitfire balanced perfectly at the 2-3/8" position behind the LE. This was tested by hand and verified by the Great Planes CG Machine.


    My Great Planes Combat Spitfire was Ready-To-Fly at 39oz (or 2.4lbs) with the 10oz 3-cell ElectriFly 3200mAh (20C) LiPo pack.

    The current draw was only 32 amps for 370 watts. That's a powerful 152w/lb and the power system can handle full throttle for the entire flight!

    Test Flying

    Combat Spitfire Test Flight video.
    CLICK HERE (5meg)

    The Great Planes Combat Spitfire flew fantastic! It flies very fast, which was expected from the clean airframe. Most of the flights were spent around half throttle and we saw no bad tendencies. The winds were 10-15mph and the Spitfire was solid in flight. We performed loops and rolls at only half throttle. The warbird lands fast so it is important to bleed off much of the speed before belly landing on the grass. None of the power system components were hot after the flights which lasted about 12 to 15 minutes.

    Spitfire Mock Combat Video
    CLICK HERE (8meg)

    I made a second video using a regulation streamer, and, our local combat expert, Matt Kirsch, puts the Great Planes Spitfire through some typical combat maneuvers. Matt is also an RCU Moderator.


    The Great Planes Combat Spitfire GP/EP ARF truly is "a sport warbird for everyone!" Although it is only AMA Event 750, Combat Class 2610 legal when powered by a glow engine, the alternative electric power setup allows the Spitfire to be flown for sport-scale fun. My Great Planes Combat Spitfire was Ready-To-Fly at 39oz (or 2.4lbs) with the 10oz 3-cell ElectriFly 3200mAh (20C) LiPo pack. The powerful RimFire motor current draw was only 32 amps for an incredible 370 watts of power!

    Although the Combat Spitfire balances perfectly with the suggested electric power system, it has been reported to be nose heavy with either an O.S. .25 or Thunder Tiger .25 glow engine installed. To properly balance the plane, either cut a little access area just in front of the tail feathers to mount the battery, or add 1.25oz lead weight to the tail. Moving the battery to the tail may be a better option as it doesn't add additional weight to the plane.

    The Great Planes Combat Spitfire is solidly built from wood construction, not foam or plastic. The beautiful Monokote covering scheme, with pre-cut decals, provide true scale appearance without the challenges. It can handle a hard landing without breaking apart and simply flies as great as it looks. The Combat Spitfire is a winner!

    Great Planes Spitfire

    Manufacture Information

    Great Planes Model Distributors
    P.O. Box 9021
    Champaign, IL 61826-9021
    Web: www.greatplanes.com

    distributed exclusively by:
    Great Planes Model Distributors
    P.O. Box 9021; Champaign, IL 61826-9021
    Telephone Contact: 217-398-8970


    Hobbico ElectriStar Select
    Distributed Exclusively by:
    Great Planes Model Distributors
    P.O. Box 9021
    Champaign, IL 61826-9021
    Available at your Local Hobby Shop
    Web: www.hobbico.com

    ZAP Glues On-line at Frank Tiano Enterprises

    Pacer Z-42 Thread Locker
    5-minute Z-poxy
    Pacer POLY ZAP(tm)

    Comments on RCU Review: Great Planes Combat Spitfire ARF

    Posted by: Joem25 on 05/01/2011
    I just got test flew mine, AWSOME. I powered it with an Evolution 36 NT, it took 1 1/4 oz on the tail to get the CG right but it still has a great glide ratio. Using an APC 9x7 prop this thing is a rocket ship. I did not have a radar gun but I think it is running about 120 to 130 MPH and it has a terific roll rate for such small ailerons. One of my new favorite planes.
    Page: 1
    The comments, observations and conclusions made in this review are solely with respect to the particular item the editor reviewed and may not apply generally to similar products by the manufacturer. We cannot be responsible for any manufacturer defects in workmanship or other deficiencies in products like the one featured in the review.

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