Did you know…
What engines did the first Aerosport Rail have?
Short answer
Two Aerosport-Rockwell LB600 automotive engines of 45 hp (34 kW) each, derated to 25 hp and driving pusher propellers. They were two small two-stroke engines limited to 25 hp (19 kW), mounted on struts behind the seat. The Rail first flew on November 14, 1970.

An ultralight stripped to the essentials
The Aerosport Rail is a minimalist American ultralight designed by Harris Woods and built by Aerosport Inc.. The airframe was little more than a 2-by-5-inch square aluminum tube —the "rail" that gives the aircraft its name— with all-metal wings and a T-tail. The first flight took place on November 14, 1970.
The powerplant
The aircraft carried two small two-stroke engines derated to 25 hp (19 kW), mounted on struts behind the seat, one on each side of the longitudinal axis, driving pusher propellers. These were two Aerosport-Rockwell LB600 automotive engines of 45 hp (34 kW) each, limited to that 25 hp. Each engine had its own 4 US gallon (15 L; 3.3 imp gal) fiberglass fuel tank mounted in front of it.
Plans sold
Between 1970 and 1977, about 175 sets of plans for the Rail were sold.
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