Stinson Floatplane W&B and Flight Manual

As determined from my aircraft.

REMOVE
Main Gear Assembly (incl goodyear breaks, pants) -111.0 lbs (arm -1.00) Moment -111

Tail Wheel Ass. (incl spring & maule 8 inch) -17.0 lbs (arm +219.00) Moment -3723

ADD
EDO 44-2425 Floats +303.0 lbs (arm +21.00) Moment +6363
Seaplane Fin Kit +4.0 (arm +218.00) Moment +872

Total Difference 179 lbs.

LIMITATIONS

The following limitations must be observed in the operation of the Stinson Model 108-2 165 hp

Airspeed/mph TIAS
Never Exceed Speed: 128
Maximum Structural Cruising Speed: 102
Maneuvering Speed: 116
Flaps Down Speed: 88

Flight Load Factor
Maximum Positive Load Factor: 3.8g

PERFORMANCE

The following performance figures were obtained during CAA type tests and may be realized under conditions indicated with the airplane and engine in good condition and with average piloting technique. All performance is given for 2235 pounds gross weight, with no wind, and on calm surface water. In using the following data, allowance for actual conditions must be made.

Performance figures for the airplane equipped with the Sensenich fixed-pitch wood propeller are given below.
Performance with the McCauley metal, and the Sensenich two-position propeller installations are equal to or exceeds that given.

Take-off over 50 ft.; 80 mph TIAS - flaps up

 Frankly, unless you have a wind you will likely not get on the step at 4000' in a fully loaded aircraft with 165 hp.

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Copyright © 2003 David P. Miller
Last modified: March 23, 2004