MOUNTAIN GOAT STOL™
High Performance Bush Plane and General Aviation Aircraft
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4.  COMPETITIVE AIRCRAFT CLASS COMPARISONS
MOUNTAIN GOAT STOL™ AIRCRAFT in California.
MOUNTAIN GOAT STOL™ AIRCRAFT in California.
SPECIFICATIONS COMPARISONS
MOUNTAIN GOAT STOL™ DATA WITH 26-INCH DIAMETER × 10.5 × 6 GOODYEAR TUNDRA TIRES.


Piper Super Cub™, Aviat A-1B Husky™, and American Champion Scout™ DATA WITH  STANDARD AIRCRAFT TIRES.
  Montagne Aircraft, MOUNTAIN GOAT STOL™ Piper Super Cub™ PA-18-150 Aviat A-1B Husky™ American Champion Scout™
Power Plant: Lycoming IO 360 B2E Lycoming O-320-A2B Lycoming O-360-A1P Lycoming O-360-C1G
Horsepower: 180 hp 150 hp 180 hp 180 hp
Propeller: McCauley FP 76-66 FP 74-56 Hartzell CS 76 in. Hartzell CS 76 in.
Length: 24.3 ft 22.5 ft 22.6 ft 23.0 ft
Height: 6.7 ft 6.7 ft 6.7 ft 9.7 ft
Wing Span: 35.5 ft 35.3 ft 35.5 ft 36.2 ft
Wing Area: 188 sq ft 178.5 sq ft 183 sq ft 180 sq ft
Seats: 2 Tandem 2 Tandem 2 Tandem 2 Tandem
Empty Weight: 1,250 lbs w 4130 Chrome Moly alloy airframe; 1,170 lbs w Titanium airframe 1,062 lbs 1,190 lbs 1,400 lbs
Max Gross Weight: 2,500 lbs 1,750 lbs 2,000 lbs 2,150 lbs
Useful Load 1,250 lbs w 4130 Chrome Moly alloy airframe; 1,330 lbs w Titanium airframe 688 lbs 810 lbs 750 lbs
Payload with full fuel: 830 lbs w 4130 Chrome Moly alloy airframe; 910 lbs w Titanium airframe 472 lbs 498 lbs 540 lbs
Fuel Capacity: 65 US gal. 36 US gal. 52 US gal. 36 US gal.
Usable Fuel: 62 US gal. n/a 50 US gal. 35 US gal.
Baggage Area VOLUME: 32 cu ft 18 cu ft 10 cu ft 10.4 cu ft
Baggage Area, MAXIMUM WEIGHT: 350 lbs w 4130 Chrome Moly alloy airframe; 430 lbs w Titanium airframe 50 lbs 50 lbs 100 lbs
 



Ð.  Competitive data collected from POHs, manufacturer web sites, and industry publication web sites.


Ñ.  Similar non-certified class aircraft not cited include: Avid Aircraft Bandit, Avid Aircraft Champion, Avid Aircraft Magnum, Avid Aircraft Mark IV, Bush Caddy, Cub Crafters Cub, Glassair Sportsman, Kolb Pelican, Murphy Rebel, Rans S6 Coyote, Rans S7 Courier, Sky Star Classic 4, Sky Star Series 5, Sky Star Series 7, Ultravia Pelican, Vans RV Series, Zenith STOL 701, and Zenith STOL 801.


Ç.  Similar certified class aircraft not cited include: American Champion Citabria, American Champion Scout, Cessna 120, Cessna 140, Cessna 170, Cessna 180, Cessna 185, Cessna 195, Maule M4, Maule M5, Piper Super Cub PA-18, Piper Tri-Pacer PA-12, Stinson 108, and Taylorcraft F22.
Montagne MOUNTAIN GOAT STOL™ in California.
Montagne MOUNTAIN GOAT STOL™ in California.
PERFORMANCE COMPARISONS

Note that Mountain Goat STOL™ performance figures are with 26-inch diameter TUNDRA TIRES, while performance figures for the other cited aircraft are with STANDARD AIRCRAFT TIRES. Even with the drag disadvantage prejudicing data against the MOUNTAIN GOAT STOL™ performance figures, MOUNTAIN GOAT STOL™ performance is decisive.

Configuring the other aircraft with 26-inch diameter tundra tires degrades their related performance figures significantly. This is extremely apparent when, at both cruise or climb configurations, at significantly reduced power settings, the MOUNTAIN GOAT STOL™ aircraft readily passes any of the bush fitted, competing aircraft, flying at full power settings.

Note also that mission relevant Mountain Goat STOL™ aircraft figures are given at gross weight ("@gw"), whereas particular cases of data for cited class aircraft comparisons are given at undeclared flying weights.

MOUNTAIN GOAT STOL™ DATA WITH 26-INCH DIAMETER × 10.5 × 6 GOODYEAR TUNDRA TIRES.


Piper Super Cub™, Aviat A-1B Husky™, and American Champion Scout™ DATA WITH  STANDARD AIRCRAFT TIRES.
  Montagne Aircraft, MOUNTAIN GOAT STOL™ Piper Super Cub™ PA-18-150 Aviat A-1B Husky™ American Champion Scout™
Take-off: 50 ft w light load;
300 ft @ gw
200 ft 200 ft 490 ft
Landing: 120 ft @ 1,670 lbs;
275 ft @ gw
350 ft 350 ft 420 ft
Max. X-Wind: 26 mph n/a n/a 20 mph
Rate of climb: 2,200 fpm w light load;
1,200 fpm @ gw
960 fpm @ gw 1,500 fpm 1,075 fpm
Vs0: 32 mph @ 1,900 lbs 43 mph 43 mph 49 mph
Vs1: 50 mph @ 1,900 lbs (flaps reflexed) 47 mph 53 mph 54 mph
Vx: 55 mph 45 mph n/a 61 mph
Vy: 75 mph 75 mph n/a 76 mph
Va: 120 mph n/a n/a 112 mph
75% Cruise: 159 mph @ gw 115 mph 145 mph 130 mph
75% Endurance: 800 sm @ gw 460 sm n/a 351 sm
55% Cruise: n/a n/a n/a 112 mph
55% Endurance: n/a n/a 800 sm 426 sm
 



Ð.  Competitive data collected from POHs, manufacturer web sites, and industry publication web sites.


Ñ.  Similar non-certified class aircraft not cited include: Avid Aircraft Bandit, Avid Aircraft Champion, Avid Aircraft Magnum, Avid Aircraft Mark IV, Bush Caddy, Cub Crafters Cub, Glassair Sportsman, Kolb Pelican, Murphy Rebel, Rans S6 Coyote, Rans S7 Courier, Sky Star Classic 4, Sky Star Series 5, Sky Star Series 7, Ultravia Pelican, Vans RV Series, Zenith STOL 701, and Zenith STOL 801.


Ç.  Similar certified class aircraft not cited include: American Champion Citabria, American Champion Scout, Cessna 120, Cessna 140, Cessna 170, Cessna 180, Cessna 185, Cessna 195, Maule M4, Maule M5, Piper Super Cub PA-18, Piper Tri-Pacer PA-12, Stinson 108, and Taylorcraft F22.