Comparison Chart: Four Seat Light Aircraft
  Zodiac
CH 640
STOL
CH 801
1975
Cessna 172
1999
Cessna 172R 
1965
CHEROKEE PA28-140
1981
PA-28-161 Warrior II
Engine make/model: Lycoming
0-360
Lycoming
0-360
Lycoming
0-320
Lycoming IO-360-L2A Lycoming O-320-E2A Lycoming O-320-D3G
Horsepower: 180 180 150 160 150 160
Propeller: fixed-pitch fixed-pitch constant-speed fixed-pitch fixed-pitch fixed-pitch
Landing Gear Tri / fixed Tri / fixed Tri / fixed Tri / fixed Tri / fixed Tri / fixed
Wingspan 31 ft. 6 in. 31 ft. 0 in. 35 ft. 10 in. 36 ft. 1 in. 30 ft. 0 in. 35 ft. 0 in.
Length 23 ft. 0 in. 24 ft. 6 in. 26 ft. 11 in. 27 ft. 2 in. 23 ft. 3 in. 23 ft. 8 in.
Wing Area 150 sq.ft. 167 sq.ft. 174 sq.ft. 174 sq.ft. 160 sq.ft. 170 sq.ft.
Cabin Width 46 in. 44 in. 39.5 in. 39.5 in. 42 in. 41.5 in.
Seats 4 4 4 4 4 4
Useful Load 1053 lbs. 1050 lbs. 930 lbs. 857 lbs. 920 lbs. 972 lbs.
Empty Weight 1147 lbs. 1150 lbs. 1370 lbs. 1600 lbs. 1230 lbs. 1353 lbs.
Gross Weight 2200 lbs 2200 lbs. 2300 lbs. 2457 lbs. 2150 lbs. 2325 lbs.
Fuel - standard / extended range 38 / 46 gal. 30 / 60 gal. 38 gal. 53 gal. 48 gal. 48 gal.
Payload* 825 / 777 lbs. 870 / 690 lbs. 702 lbs. 539 lbs. 632 lbs. 684 lbs.
Cruise - 75% 150 mph 106 mph 135 mph 138 mph 132 mph 145 mph
Rate of Climb 950 fpm 720 fpm 645 fpm 720 fpm 660 fpm 710 fpm
Service Ceiling 12,800 ft. 14,000 ft. 13,100 ft. 13,500 ft. 14,300 ft. 14,000 ft.
Stall (flaps down) 47 mph 39 mph 50 mph 54 mph 55 mph 57 mph
Takeoff Roll 990 ft. 390 ft. 865 ft. 945 ft. 800 ft. 975 ft.
Cabin Width 46" 44" 39.5" 39.5" n/a n/a

*Payload: Useful load less full fuel.

Performance figures @ gross weight.
Zodiac CH 640 figures are based on prototype test results and are subject to change and revision.
The above information is for general comparison use only, and may not be accurate.  All figures are subject to change without notice.