Ken Brock Manufacturing KB-3

First flown in 1983, the KB-3 conforms to Pt 103 as a homebuilt.

The KB-3 was sold in sub-kits. Price may vary with options, but the average is $12,500 in 2001.

Plans
2001 Plans for the Rotax 582-powered KB-3: $125

Engine: 64 hp Rotax 582cc.
Prop: Ground adjustable 60”.
Empty wt. lbs: 250
Max wt. lbs: 600
Rotor blades: 22’ x 7” Brock riveted aluminium, adjustable hub.
Disk area: 380 sq.ft.
Min speed: 18-20 mph.
Cruise: 60 mph.
Top speed: 63 mph.
Range: 100 sm.
Fuel cap: 5 USG.
ROC: 700 fpm.
Service ceiling: 12,000 ft.
Empty wt: 250 lbs.
Useful load: 350 lbs.
Gross wt: 600 lbs.
Width: 5’.
Height: 7’7”.
Length: 11’3”.
Seats: 1.