70 lb airplane pulling 4 sq ft of net sieving 1100 cubic meters of air per min for small migrating insects (1/16 inch in length)

Engine = 200 cc 3W with a 3 blade 29 x 10 biela turning at 6500 rpms

fuel consumption = 1.5 gallons per 25 min sampling flight at WOT
Oil mix = 24:1 pennzoil air cooled

Wing loading = 68 oz/sq ft

Net open = 55 mph airspeed
Net closed = 75 mph airspeed

So far, engine is holding up great through multiple sampling flights

Elson