J1-B Homebuilt Ultralight Aircraft Plans

J1-B Homebuilt Ultralight Aircraft Plans

Not your blurred, crappy photos of plans, THESE plans are freshly scanned from A1 size clear originals into PDF format. These files can be taken on a disk to a plan printing shop and printed out super clear. Also included is a builders manual in PDF, a photo gallery and lots of other useful construction information. No useless disk fillers here.

Full Size Plans for a Human-Piloted Aircraft

J-1B is a single seat tailwheel aircraft with pusher prop. Wings strut-braced, with a 13% thick Clark “Y” airfoil and no flaps. Typical construction in either wood, or wood foam & glass composite. A simple to build airplane. Suitable for engines up to 50 Hp including VW, Rotax and similar.

Specifications (approx. with VW 1600 engine)

• Wingspan: 24 ft 7in
• Wing Chord: 3 ft 3in
• Length: 16 ft 4in
• Height: 4 ft 6 in
• Empty Weight: 390 lbs
• Maximum Weight: 650 lbs
• Maximum Speed, Level Flight: 100 mph
• Cruise speed: 95 mph
• Stall speed: 35 mph
• Take-off Run: 330 ft
• Landing Roll: 165 ft
• Fuel Capacity: 4 gallons
• Nominal Range: 240 miles

Wood or Composite Construction – Basic Tools Only

A simple to build airplane that can be constructed with standard woodworking tools. No welding or specialised aircraft equipment required. The VW 1600 is the most popular engine choice – see our VW Aero Engine Conversion Plans for a companion resource.

File Size: 30mb ZIP file containing PDFs. Instant download after purchase.

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