RCU Magazine Review - ParkFlyers.com Jump Jet


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    Contributed by: Greg Covey
    Parkflyers R/C Jump Jet

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

    Jump Jet RTF EDF
    Distributed On-line at:

    ParkFlyers R/C
    55 Park Ave South
    Lakewood NJ 08701

    Orders: 1-800-470-8932
    Service: (732)-363-6181
    Support: Parkflyers@aol.com
    Website: www.parkflyers.com


    Complete RTF EDF package
    Flight Battery Included
    Great value and looks
    Easy Assembly
    Spare Parts Available
    Superb Flying Performance

    Transmitter Batteries Not Included
    Flight Simulator Did Not Install
    Receiver-ready Version Needed

    Skill Level:
    Low to Moderate



    Time Required to Build:
    1 to 2 Hours



    Frustration Level:
    No Problems


    Degree of Difficulty Explanation

    ParkFlyers R/C - Jump Jet

    The ParkFlyers R/C Jump Jet is a complete EDF jet package that comes with everything you need to fly except the 8 AA batteries for the transmitter. The included 4-channel 2.4GHz DSM radio system provides solid glitch-free flying. The 3600 Kv brushless motor and 30-amp brushless speed controller provide speeds of over 75mph!

    The package includes a 3-cell 1800mAh LiPo pack with a balancing charger and A/C adapter supply to keep the pack healthy flight after flight. Also included is a complete flight simulator program with USB adapter to plug the 4-channel transmitter into the PC.

    The transmitter is digitally bound to the receiver so multiple jets can be flown together without interference.

    The ParkFlyers R/C Jump Jet was designed with state-of-the-art Cad Cam computer software for the most aerodynamically efficient R/C jet design possible. Modular interlocking design allows easy access to all electronics, and ducted fan unit, for easy repairs and maintenance. Spare parts are also available. The main fuselage canopy features a 90-degree twist release canopy bolt. A special EPO type of foam/plastic construction allows for more durability than regular Styrofoam and the hard rubber nose can absorb most impacts.

    Key Features:

    • Speeds over 75mph!
    • 2.4GHz super-long range radio system included
    • Powerful EDF power system included
    • Flight battery and balance charger included
    • Ready-To-Fly in just minutes!

    Specifications:

    • Wingspan: 32.5"
    • Length: 28.5"
    • Weight: 22.7oz
    • Motor: 3600kv brushless
    • Radio: 4-channel 2.4GHz FM
    • Servos: Two 9g sub-micro
    • Battery: 11.1v 3-cell 1800mAh LiPo with balancing port
    • Range: 5500 feet
    RTF Contents :

    The main fuselage was protected with bubble wrap in a custom box compartment. All the electronics were pre-installed so there is very little assembly required. The epoxy glue and screw driver needed to complete the assembly are even included!

    The transmitter does need 8 AA size batteries and is the only additional thing needed to complete the Jump Jet package. The battery, charger, and A/C adapter require no soldering. Simply follow the instructions in the manual for proper battery pack charging. The LiPo pack balance connector is also E-flite and Great Planes Electrifly compatible.

    The 15-page manual covers everything from safety, assembly, charging, to plane and radio setup and troubleshooting. Additional manuals are included for more details on the 4-channel 2.4GHz radio system, the LiPo balancing charger, and USB cable instructions. A CD is also included that contains the R/C Flight Simulator Software and some flight educational movies. I later discovered that the Flight Simulator would not install on my PC.

    A QC (Quality Control) inspection card provides personal certification of the LiPo cell voltages and all main components of the Jump Jet package.

    Quick Assembly:

    The assembly is very quick. Simply screw in the fins with the supplied screws and screwdriver, glue the nose piece with the supplied epoxy, and press the tail cone in place after removing the backing from the pre-applied double-sided tape.

    The servos, control rods, and linkages are all pre-installed.

    The only thing I did outside the instructions was to trim the aft end of the tail cone black material to meet the inner clear Mylar material. In this manner, none of the air exiting the ducted fan is perturbed.

    Skids:

    The Jump Jet comes with two bottom skids to help protect it on landings. Note the finger holes on the bottom for easy hand-launching.

    Canopy:

    The canopy is easily removed with a 90 degree twist on the quick latch. The battery fits snugly in its custom compartment. You simply turn on the transmitter, plug in the battery, and you are ready to go!

    Ready-To-Fly!

    My Jump Jet was Ready-To-Fly at 22oz. I measured 230 watts at 21 amps on full throttle which provides a strong 167 watts/lb power level.


    The Jump Jet had plenty of power for loops, rolls, and high speed passes. It really performed very well! What surprised me were the slow flying characteristics which will allow an intermediate pilot to have a successful experience Flight times were about 10 minutes with plenty of full throttle passes.

    It took us several iterations to fine tune the clevis trims so that the transmitter trim controls were near center. Once this was done, we could easily launch the Jump Jet ourselves with one hand while the transmitter was in the other. When landing, carry a little power until just before touchdown and you'll slide along the grass just like in the video.

    Download and Watch in Windows Media Player here (19MB)!

    The only minor issue I had was with the transmitter stick gain. Since I am used to adding exponential to soften the stick centers, I needed to adapt to the higher gain of this non-computer radio setup. A receiver-ready version would be a nice option for experienced R/Cers that already have a computer radio and charger.

    Only intermediate flying skills are needed to handle this EDF Jet as it is designed to fly very well and land slower with some low power required until touchdown. Flight times were a solid 10 minutes with mixed aerobatics.

    The ParkFlyers R/C Jump Jet is a complete EDF jet package that comes with everything you need to fly except the 8 AA batteries for the transmitter. The included 4-channel 2.4GHz DSM radio system did provide solid glitch-free flying even when other planes were in the air at my local flying field. The brushless power system is well designed with components that compliment each other.

    The package includes a 3-cell 1800mAh LiPo pack with a balancing charger and A/C adapter supply to keep the pack healthy flight after flight. I was not able to install the flight simulator program on my PC and I do not see it promoted as part of the Jump Jet package so perhaps its inclusion in my kit was a mistake.

    Overall, I think the Jump Jet was well designed and it made for a fun time flying. Once you have experience with a few starter planes, the Jump Jet made be your next choice for a real thrill!

    1/4 Scale J3 Cub ARF





    Jump Jet RTF EDF
    Distributed On-line at:

    Parkflyers R/C
    55 Park Ave South
    Lakewood NJ 08701

    Orders: 1-800-470-8932
    Service: (732)-363-6181
    Support: Parkflyers@aol.com
    Website: www.parkflyers.com




     
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