The two-seat Sky-Walker Sky-Walker 1+1 was popular as an ultralight training aircraft. The airframe exists out of an aluminium-tube construction. The plane is constructed out of alu-tube covered with sailcloth. As powersource the Sky-Walker 1+1 had a four cylinder, horizontal opposed air-cooled Limbach L 1700 EA engine. The L 1700 EA was a perfect engine for the ultralight Skywalker with a continous 56 hp (maximum 60 hp) and a weight of only 73 kg.
The dated Limbach engine of the PH-1U9 was replaced by a Rotax 462 UL CB.
Engine: Rotax 582 UL DCDI
Stall: 32 kt / 37 mph / 60 kmh
Cruise: 43 kt / 50 mph / 80 kmh
VNE: 54 kt / 62 mph / 100 kmh
Empty Weight: 68 kg / 150 lbs
MTOW Weight: 159 kg / 350 lbs
Climb Ratio: 1000 ft/min / 5 m/s
Take-off distance (50ft obstacle): 330 ft / 100 m
Landing distance (50ft obstacle): 490 ft / 150 m