Sportsman STOL Kit (Cessna singles) (20-STOL-25C)

Introductory Price	$1,995.00
Suggested Retail:	$2,409.67
Part Number:	20-STOL-25C
Material:	2024-T3 Alclad Aluminum
Color:	Almost double the lift & increased rate of climb
Thickness:	.025
Replaces OEM Part #:	No reduction in cruise performance
Aircraft Year & Model:	Eliminate the classic stall, Smooth in-flight turbulence, Increase glide ratio from 7:1 to 13:1 (170B) Incease fuel economy, Raise service ceiling , Reduce landing & take off speeds up to 37%

Kit comes complete with installation instructions, STC paperwork, all hardware and parts, landing light lens and standard small droop wing tips.

The kit also has aileron gap seals, and recommends not using flap gap seals with this kit.

Skins are 2424-T3 alcad aluminum, .025 thickness

Skins are installed with Cherry max pull rivets, 91-62

Install time is estimated as 50 labor hours for 1st time installers and 25 for the experienced.

The Sportsman STOL modification itself was originated by Marvin Davis, a lockheed Skunkworks engineer who developed it while studying NASA technical notes pertaining to airfoil stall and spin characteristics from NASA's Langley Research Center. After finalizing his findings through wind tunnel tests, Marvin obtained the rights from Lockheed. Sadly, Mr. Davis passed away before realizing the full potential of this discovery. Enter Marshall Quackenbush. Acquiring the rights from Mr. Davis' widow, Marshall pushed forward with the work to develop on of general aviation's greatest discoveries. Since the kit's inception, it has been installed, sometimes replacing other STOL modifications, on over 3000 airplanes, with customers including the Alaska Fish and Game Department, The Royal Canadian Mounted Police, various law enforcement agencies worldwide, and owners in Australia, Canada, New Zealand, South Africa, South America, England, Mexico, as well as all over the United States.

The Sportsman STOL wing cuff is a state of the art modification designed to increase light plane utility and safety by increasing the wings efficiency and resistance to stalls and spins. The kit includes shallow drooped wing tips that extend approximately two inches forward of the original wing. The Sportsman STOL is not just a lip on the bottom, but is a re-engineered airfoil. The aim of the Sportsman STOL modification is to improve aerodynamics. The Sportsman STOL achieves this by streamlining the impingement point for smoother airflow and less drag. The second benefit is that the airflow remains smooth to a lower airspeed (increased laminar flow) and the stall curve is considerably extended. The Sportsman STOL increases the wing area by about four square feet.

Eligibility List: Cessna singles

150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, 150K, 150L, 150M, A150M
152, A152
170-B
172, 172A, 172L, 172M, N, P&Q, R172K
175, 175A
180, 180A-H, 180J, 180K
182, 182A, 182B, 182C, 182E, 182F, 182G, 182H, 182J, 182K, 182L, 182M, 182P
A185E, A185F
185, 185A-E
206, P206, P206A-E, U206, U206A-G, TP206A-E, TU206A-G, 206 - T206H
210-5, 210-5A

SPECIAL NOTE: Aircraft with ART wing tip extensions can be accomadated with a Bushton cuff kit.
   Add an additonal $175.00 for this kit.

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