1103R Mini-Max Ultralight Mini-Kits

Dimensions & Weight

• Wingspan: 25 FT
• Wing Area: 112.5 SQ. FT.
• Length: 16'
• Height: 60"
• Cockpit Width: 22"
• Empty Weight: 240 LBS
• Useful Load: 260 LBS
• Max Gross Weight: 500 LBS
• Wing Loading: 3.82 LBS/SQ. FT.
• Power Loading: 15.35 LBS/HP
• Design Load Factors: +4.4/-2.2
• Fuel Capacity: 5 Gallons

Performance

• Top Speed: 60 MPH
• Cruise Speed: 55 MPH
• Stall Speed (clean): 26 MPH
• Stall Speed (with flaps): 22 MPH
• Climb Rate: 650 FPM
• VNE: 90 MPH
• Takeoff Distance (grass): 150 FT
• Landing Roll (grass): 180 FT

Engine Options

• Hirth F-33
• Polini 202 / 260 / 303
• Simonini Mini 3

Features (Standard / Optional)

• Flaperons: Optional
• Wheel Pants: Optional
• Wing Tips: Optional
• Steel Gear: Optional
• Band Brakes: Optional
• Black-Max Brakes: Optional

Mini-Kits let you stage your 1103R Mini-Max Ultralight build and spread out cost — order the airframe sections you need and move from plans to real airframe progress without buying a full kit all at once.

• Order individual airframe sections (for example wing rib kits and wing assembly kits).
• Choose the material level where offered — raw materials, laser-cut gussets, or prebuilt wing ribs.
• Combine sections over time to complete the airframe at your own pace.

Not included unless listed

Engine, propeller, instruments, avionics, battery, wiring, covering, paint, upholstery, shipping, assembly labor, registration, certification, inspection, and training are not included unless the product page or invoice specifically says so.

Estimated build time depends on the kit level you choose and your experience. Prefab wing ribs and prefab metal parts meaningfully reduce build time.

• Base kit build time: 250-300 Hours
• Prefab quick-build kit build time: 175-225 Hours

This is an amateur-built, wood-and-fabric aircraft designed for hands-on homebuilders. Typical skills:

• Basic woodworking, measuring, and drilling
• Riveting and assembly of metal parts
• Epoxy work and fabric covering
• No welding or advanced machining required for a standard build

Mini-Max USA builder-assist support is available to help you finish.

The 1103R Mini-Max Ultralight is designed as a single-seat Part 103 ultralight candidate. Under FAA Part 103, a legal ultralight needs no pilot license, no medical, and no aircraft registration when the finished aircraft meets the Part 103 limits.

• Single-seat, for recreation or sport use only.
• Empty weight at or below 254 lb (with allowances for floats or a ballistic parachute).
• Top speed 55 knots (about 63 mph) or less; power-off stall speed 24 knots or less.
• Fuel capacity of 5 U.S. gallons or less.

Part 103 also makes the 1103R Mini-Max Ultralight an affordable way to build flight time — low purchase and operating cost for recreational flying and hour building.

Final Part 103 eligibility depends on your finished configuration, weight, and equipment. You are responsible for verifying actual empty weight, speed, stall speed, and fuel capacity before flight. No listing statement is an FAA determination of eligibility.

Most in-stock items ship within 3–5 business days. Full aircraft kits and large or heavy items may ship by motor freight, and transit times vary.

For returns, freight quotes, or questions, review our Refund Policy, see Shipping & Pickup, or contact us.