Whisper Motor Glider

The Whisper was designed for the homebuilder. Every component has been optimized to ease the task of the homebuilder, yet the final result is a highly efficient and extremely strong airframe that will provide for many years of trouble free operation.

The aircraft can be built from a "basic package" or from a "fast build package" depending on how many hours the builder wishes to spend on the project. Components not supplied in these packages can be manufactured by the builder or ordered from the factory. All hardware is ordered directly from us by the builder.

The Whisper can be built with a wingspan of 16m (52.5') or 12m (39.4') to suit individual requirements. With the longer wing the aircraft has a glide ratio of 28:1 and a minimum sink rate of 200fpm which makes it a very capable glider. The 21USG fuel tank and the 115MPG cruise speed also make the aircraft capable of very long powered flights. The 4'2" wide cabin allows for very comfortable side by side seating. The aircraft can be built with conventional or nose wheel undercarriage.

The aircraft structure is fiberglass and the wing has been tested to an ultimate load of 10.6g. Engine options are Rotax 912/S, VW2100, Jabiru 2200/3300 and certain auto conversions such as Subaru.

  • Kit Price w/o Engine: ~$9800
  • Plans Price: ~$500
  • Number of Seats: 2
  • Building Materials: Fiberglass and Epoxy resin/A
  • Building Time: ~1000 - 2500 hours
  • Standard Engine: Rotax 912
  • Prop: Woodcomp.
  • Horsepower: 80
  • Wing Span: 52'
  • Wing Area: 162 ft2
  • Empty Weight: 1100 lbs
  • Gross Weight: 1705 lbs
  • Takeoff Distance: 600'
  • Landing Distance: 500'
  • Climb Rate: 700Ft./Min.
  • VNE: 156 MPH
  • Stall Speed: 45 MPH
  • Cruise Speed: 110 MPH
  • Cruise Fuel Consumption: 3.5 GPH
  • Top Speed: 125 MPH
  • Fuel Capacity: 22 GAL
  • Range: 690 Miles
  • Min Sink Speed: 170 Ft/Min at 50 MPH
  • Aspect Ratio: 16
  • Glide Ratio: 1:28 at 65 MPH

  • Contacts:
    Further details can be obtained from the website:, the Facebook page: Whisper Motorglider, or by emailing
    The website has a forum where builders post details of their projects and exchange information.