Home Depot Ultralight: aka "Motor Glider 101"

  • Wing Span: 28' 6"
  • Wing Chord: 5' 0"
  • Gross Wing Area: 142 1/2 sq. ft.
  • Dihedral: 3" from Fuselage to Wing Tip.
  • Tail Span: 6' 6"
  • LOA: 15' 8"
  • Height: 6' 0"
  • Wheel Track: 4' 10" - Center to Center
  • Empty Weight: 254 lbs
  • Gross Weight: Not established, however pilot flew prototype with 5 gallons fuel, pilot weight 225 lbs.
  • Maximum HP: Not Established
  • Prototype Power: (2) Tecumseh 10hp 4 Stroke Engines or (2) 227 Rotax.
  • Fuel Capacity: 5 US Gallons.
  • Endurance: (2) Techunesh engines consume approx. 1 gph.
  • Cruise Speed: 55 mph @ 2600 rpm.
  • Landing Speed: 35 mph.
  • Landing Rollout: 100'
  • Stall Speed: 30 mph
  • Rate of Climb: Slow but steady with (2) 10 hp motors. Will maintain level flight on one engine.

According to designer/ builder Jack Harper the MotorGlider 101 materials were basically purchased from the local "Home Depot," and the design was thought up during watching soap operas when he had nothing else to do." The plane utilizes all wood construction, the covering material is actually "door skins", and the original plane took just over 3 months to design and build.

Power is provided by two 10 HP Tecumseh motors are mounted directly onto two by two's, hollowed out in the center with 1/8 inch plywood on the side. No rubber mounts are used for the engines, but it would be a good idea. Power from the two 10 HP engines was transferred directly to the props, no gear reduction was used. The props for the prototype were homemade and were "whittled out of wood." They were redesigned several times until optimum performance was reached. The wings have a plywood main spar, the ribs are Styrofoam, and 1.7-ounce Dacron sail cloth is used as a covering material. According the Jack he has "over 50 years of experience building planes."

The plane shown here had about 7 hours on it with the last flight made the week prior to the show where it was on display. Jack reports that it fly's along at about 40 to 45 mph. When asked how much the average person would have invested in materials - the reply was "if you go down and buy everything from Home Depot, the average person will have about $1,000 invested in engines and materials. However, the builder will, carve his own props or buy some commercially produced." Of course materials like the 4130 steel tubing, sail cloth, etc will have to be sourced out somewhere else.

For plans and additional information contact:

Jack Harper
16389 Crews RD, Dept: MED
Glen St Mary, FL 32040 USA
Phone: (904) 259-8140

At the time of this writing plans were $50.00
Please tell Jack that you heard about his plans here...Thank You!

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