- Kolb Mark III
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Kolb Mark III 
Kolb Mark III Role Ultralight aircraft National origin United States Manufacturer New Kolb Aircraft Status In production Unit cost US$12,814 (M3X, 2010 base price)[1] Variants Precision Tech Fergy The Kolb Mark III is a family of American side-by-side two seater, high wing, strut-braced, pusher configuration, conventional landing gear-equipped ultralight aircraft that is produced in kit form by New Kolb Aircraft of London, Kentucky and intended for amateur construction.[2][3][4][5]
Contents
Design and development
The Mark III's standard engine was originally the 64 hp (48 kW) Rotax 582 engine, but the current engines offered are the 80 hp (60 kW) Rotax 912UL or the 100 hp (75 kW) Rotax 912ULS. In its home country the aircraft is normally licensed in the Experimental - amateur-built category.[2][3][4][5]
The design features a forward fuselage of welded 4130 steel tubing, mated to an aluminum tailboom. The horizontal stabilizer, tail fin and wings are also constructed of riveted aluminum tubing with all flying surfaces covered in doped aircraft fabric. The wings and horizontal tail are quick-folding for storage and ground transport. The original Mark III can be made ready to fly from trailering in eight minutes by one person without the use of tools, while the newer M3X variant is rated at 15 minutes to assemble for flight.[2][3][4][5]
The landing gear is sprung tubing for the main gear, with a steerable sprung tailwheel and the cabin is 45 in (114 cm) in width.[3][4]
Factory options include brakes, Ballistic Recovery Systems airframe parachute and powder coating of the steel parts. The manufacturer describes the aircraft as STOL, with a 200 ft (61 m) take-off run.[1][5]
Operational history
In reviewing the aircraft Andre Cliche said:
“ The Twinstar Mk III is a very clean and aerodynamic design. lt looks fast and flies fast. With standard dual controls, it can be used as a trainer but it is most often used as a cross-country cruiser. It is especially desirable for its folding wings.[3] ” Variants
- Mark III
- Two seats in side-by-side configuration, high wing ultralight, powered by a 50 hp (37 kW) Rotax 503, 64 hp (48 kW) Rotax 582, 74 hp (55 kW) Rotax 618 or 80 hp (60 kW) Rotax 912UL engine. Variously marketed at different times as the Mark III, Twinstar and Mark III Classic.[2][3][4]
- Mark III Xtra
- Two seats in side-by-side configuration, high wing ultralight, powered by a 80 hp (60 kW) Rotax 912UL engine or 100 hp (75 kW) Rotax 912ULS. The Xtra underwent an aerodynamic cleanup by aerodynamicist Barnaby Wainfan. Variously marketed as the Mark III Xtra and the M3X.[5]
Specifications (Mark III)
Data from Kitplanes, Cliche and Purdy[2][3][4]
General characteristics
- Crew: one
- Capacity: one passenger
- Length: 22 ft 6 in (6.86 m)
- Wingspan: 30 ft 0 in (9.14 m)
- Height: 6 ft 2 in (1.88 m)
- Wing area: 160 sq ft (15 m2)
- Empty weight: 450 lb (204 kg)
- Gross weight: 1,000 lb (454 kg)
- Fuel capacity: 10 US gallons (38 litres)
- Powerplant: 1 × Rotax 582 twin cylinder, two-stroke aircraft engine, 64 hp (48 kW)
Performance
- Maximum speed: 85 mph (137 km/h; 74 kn)
- Cruise speed: 75 mph (65 kn; 121 km/h)
- Stall speed: 33 mph (29 kn; 53 km/h)
- Never exceed speed: 90 mph (78 kn; 140 km/h)
- Range: 130 mi (113 nmi; 209 km)
- Rate of climb: 950 ft/min (4.8 m/s)
Avionics
- none
See also
- Related development
- Precision Tech Fergy
- Aircraft of comparable role, configuration and era
- Quad City Challenger II
References
- ^ a b The New Kolb Aircraft (May 2010). "The M3X - Price List". http://www.aerokml.com/index.php?option=com_content&task=view&id=46&Itemid=77. Retrieved 13 May 2010.
- ^ a b c d e Downey, Julia: 1999 Kit Aircraft Directory, Kitplanes, Volume 15, Number 12, December 1998, page 53. Primedia Publications. ISSN 0891-1851
- ^ a b c d e f g Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page B-88. Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4
- ^ a b c d e f Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 188. BAI Communications. ISBN 0-9636409-4-1
- ^ a b c d e The New Kolb Aircraft (May 2010). "The M3X - General Description". http://www.aerokml.com/index.php?option=com_content&task=view&id=45&Itemid=76. Retrieved 13 May 2010.
External links
Kolb Aircraft Aircraft Firefly · Firestar · Flyer · Flyer Super Sport · King Kolbra · Kolbra · Mark III · Mark III Xtra · Pelican · Slingshot · UltrastarCompanies Lists relating to aviation General Aircraft (manufacturers) · Aircraft engines (manufacturers) · Airlines (defunct) · Airports · Civil authorities · Museums · Registration prefixes · Rotorcraft (manufacturers) · TimelineMilitary Accidents/incidents Records Categories:- Kolb aircraft
- United States ultralight aircraft 1990–1999
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