Phasoar (oz4995)


Phasoar (oz4995) by Scott Christensen from Top Flite 1989 - plan thumbnail

About this Plan

Phasoar. Radio control electric powered glider model, with Astro Flight 035 Cobalt motor shown. Kit no RC-38.

Quote: "Steve, Here are plans for the 'Phasoar', which is a Top Flight 'Wristocrat' HLG with a battery pod added to the bottom of the fuselage. It's pretty easy to see how to make a 'Wristocrat' from this plan as well. These were early HLG and E-power plane designs from the late '80's. Spans 56.25", Electric 3 channel RC glider. Designed by Scott Christensen."

Direct submission to Outerzone.

Update 20/01/2021: Added instructions, thanks to KenBaker.


The PHASOAR 035 from Top Flite Models Inc, utilizes its unique looks and design to deliver electric-powered performance at the flying field! All of the latest technology has been employed in designing this model, starting with the silent, but powerful, ASTRO FLIGHT Cobalt 035 Electric Motor. This motor, with a GRAUPNER 7 x 3 folding propeller unit and a SR 1000 or 'Magnum' 1250 mAh battery pack (6-cell), has rocketed our prototype PHASOARS to 700 feet in 55 seconds! This was done up to five times on a single charge!

Aerodynamically, your PHASOAR has a light, straight-forward and strong airframe. There's no need to disassemble the model to get at the batteries because its single-screw release allows quick access to the battery pack. This allows you to charge batteries while still in the pod or remove them for charging while a second pack is being used. The full-flying stabilator allows the model to be quickly and dynamically trimmed for power-on/power-off flight. The PHASOAR's airfoil allows flying in wind conditions that would ground most of the flat-bottom types and, yet, provides a great thermal-hunting glide. The generous rudder area and the appropriate polyhedral of the wing panels allow quick detection of the core of the smallest thermals for long unpowered flights.

Finally, the PHASOAR is perfectly sized to let you take it most anywhere and enjoy true, high-performance electric flight.

If you are a beginner to the sport of R/C flying, we would urge you to seek and use experienced assistance in constructing and flying this airplane. All model airplane hobbyists should remember that:

Flying this or an other radio-controlled model aircraft is a PRIVILEGE and not a RIGHT and this privilege begins with the utmost safety considerations to others and yourself as well. An R/C model airplane in inexperienced hands has the potential of doing serious personal or property damage. These safety considerations start at the building board by following instructions, seeking competent help when you are confused and avoiding short-cuts..."

Update 20/01/2021: Added kit review from RCM, thanks to KenBaker.

Quote: "RCM Product Review: Phasoar from Top Flite Models.

The Phasoar is a high performance electric powered glider from Top Flite Models. It is designed to use the Astro Flight Cobalt 035 motor and miniature radio control equipment. There are other motors which will fit into the Phasoar's nose, but only the Astro Cobalt 035 provides the high performance climbs to altitude that the Thasoar was,,designeci for.

Looking at the Phasoar from a design point of view, the unclerglung removable battery pod is certainly its most distinctive characteristic. This feature allows access to the battery pack without removing the wing, and also dispenses with the need fbr a removable hatch which could weaken the slim fuselage. All in all, the removable battery pod is a unique design feature worth incorporating into other electric powered models.

From an aerodynamic sense, the Phasoar features an Eppler 205 airfoil, D-tube and capstripped wing construction, and an all moving horizontal stabilizer. The areas and moments are pleasing to the eye (ours, anyway), and if appearance means anything, the Phasoar looks like a well designed high performance aircraft.

Construction: Construction of our Phasoar started with reading the 20 page instruction manual thoroughly. The manual is very detailed, and provides substantial detail on radio equipment selection, battery pack and propeller trade-offs, and electric motor system installation. The quality of electric propulsion information presented was very high and deserves special commendation.

The actual construction proceeded smoothly, aided considerably by Hot Stuff UFO adhesives - thin and medium, and 'Hot Shot' accelerator. As mentioned before, the wing is a D-tube design (1/16 sheeted, upper and lower, from leading edge to main spar), with capstrips from the main spar to the trailing edge. The vertical and horizontal stabilizers are built-up balsa construction.

There were a few minor points to look out for. The installation of the aluminum tubes into the horizontal stab requires care to maintain good alignments, and care is also needed to properly align the horizontal stab trailing edges during assembly.

The removable motor pod is a basic balsa box which attaches to the lower fuselage, retained by wire pins on the front face, and at the rear by a 8/32 nylon bolt. The illustrated plans clearly show the layout of the motor pod, but the written instructions somehow omit any references to front former P-7. Build the pod as per the illustrated plans and 'liberally' interpret the instructions in this area..."

Supplementary file notes



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Phasoar (oz4995) by Scott Christensen from Top Flite 1989 - model pic

  • (oz4995)
    by Scott Christensen
    from Top Flite
    57in span
    Electric Glider R/C Kit
    all formers complete :)
  • Submitted: 01/11/2013
    Filesize: 735KB
    Format: • PDFbitmap
    Credit*: dfritzke

Phasoar (oz4995) by Scott Christensen from Top Flite 1989 - pic 003.jpg
Phasoar (oz4995) by Scott Christensen from Top Flite 1989 - pic 004.jpg
Phasoar (oz4995) by Scott Christensen from Top Flite 1989 - pic 005.jpg
Phasoar (oz4995) by Scott Christensen from Top Flite 1989 - pic 006.jpg
Phasoar (oz4995) by Scott Christensen from Top Flite 1989 - pic 007.jpg
Phasoar (oz4995) by Scott Christensen from Top Flite 1989 - pic 008.jpg

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Download File(s):
  • Phasoar (oz4995)
  • Plan File Filesize: 735KB Filename: Phasoar_electric_oz4995.pdf
  • Supplement Filesize: 8551KB Filename: Phasoar_electric_oz4995_instructions.pdf
  • Supplement Filesize: 1990KB Filename: Phasoar_electric_oz4995_review_RCM.pdf
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