The Boland V-8 was an aircraft engine that was developed by the Boland Brothers for use in their tailless aircraft. Between 1908 and 1914, four versions of this motor were produced ranging in power from 60 hp (45 kW) to 125 hp (93 kW). The Boland motors all used an unusual concentric overhead valve. This arrangement positioned the intake valve in the middle of the exhaust valve. These were actuated by a single push rod and rocker arm.[1][2]
The prototype of this motor first appeared in a Boland aircraft 1908. According to a Boland advertisement from 1911, they claimed that this single original motor powered all of the various iterations of the early Boland aircraft for three years without the need for repair or rebuild[1]
70 HP
Bore: 4 in (101.60 mm), Stroke: 4.5 in (114.30 mm), Displacement: 452.04 cu in (7.41 L), Weight: 255 lb (116 kg)[2]
100 HP
Bore: 4.5 in (114.30 mm), Stroke: 5.5 in (139.70 mm), Displacement: 699.76 cu in (11.47 L), Weight: 325 lb (147 kg)[2]
125 HP
This motor was mentioned in a 1914 Boland advertisement.
Wikimedia Commons has media related to Boland V-8.
^ abcAeronautical Society of America; Aero Club of Pennsylvania (1907). Aeronautics Vol.9-10. Smithsonian Libraries. New York. pp. 60, 102, 158.
^ abcdAngle, Glenn D. (1921). Airplane Engine Encyclopedia. Dayton, Ohio: THE OTTERBEIN PRESS. pp. 99-100.
^Aeronautical Society of America; Aero Club of Pennsylvania (1907). Aeronautics Vol. 7-8. Smithsonian Libraries. New York. pp. 134.
^Aeronautical Society of America; Aero Club of Pennsylvania (1907). Aeronautics Vol. 11-12. Smithsonian Libraries. New York. pp. 174.
^Aircraft. Smithsonian Libraries. New York, Lawson Publishing Company. 1910. pp. 116.{{cite book}}: CS1 maint: others (link)
^Reed Business Information Ltd (1914-10-16). Flight International Magazine 1914-10-16. {{cite book}}: |last= has generic name (help)
April 14, 2024
boland, aircraft, engine, that, developed, boland, brothers, their, tailless, aircraft, between, 1908, 1914, four, versions, this, motor, were, produced, ranging, power, from, boland, motors, used, unusual, concentric, overhead, valve, this, arrangement, posit. The Boland V 8 was an aircraft engine that was developed by the Boland Brothers for use in their tailless aircraft Between 1908 and 1914 four versions of this motor were produced ranging in power from 60 hp 45 kW to 125 hp 93 kW The Boland motors all used an unusual concentric overhead valve This arrangement positioned the intake valve in the middle of the exhaust valve These were actuated by a single push rod and rocker arm 1 2 V 8Boland 60 hp V 8Type Piston aero engineNational origin United StatesManufacturer Boland Airplane and Motor Company Contents 1 Variants 2 Applications 3 Specifications 60 HP 3 1 General characteristics 3 2 Components 3 3 Performance 4 See also 5 ReferencesVariants edit60 HP The prototype of this motor first appeared in a Boland aircraft 1908 According to a Boland advertisement from 1911 they claimed that this single original motor powered all of the various iterations of the early Boland aircraft for three years without the need for repair or rebuild 1 70 HP Bore 4 in 101 60 mm Stroke 4 5 in 114 30 mm Displacement 452 04 cu in 7 41 L Weight 255 lb 116 kg 2 100 HP Bore 4 5 in 114 30 mm Stroke 5 5 in 139 70 mm Displacement 699 76 cu in 11 47 L Weight 325 lb 147 kg 2 125 HP This motor was mentioned in a 1914 Boland advertisement Applications editBoland 1911 Tailless Biplane 60 HP Shieder 1911 aeroplane 60 HP 3 Boland 1911 Conventional Biplane 60 HP 1 Boland 1912 Tailless Biplane 60 HP 4 Spainour 1913 monoplane 60 HP 5 Boland 1914 Monoplane Flying Boat 70 HP 6 Specifications 60 HP editData from Airplane Engine Encyclopedia 2 General characteristics Type 8 cylinder Vee piston engine Bore 4 in 101 60 mm Stroke 4 in 101 60 mm Displacement 402 08 cu in 6 59 L Dry weight 240 lb 110 kg Components Valvetrain Concentric overhead valve Fuel system 1 Schebler carburetor Fuel type Gasoline Cooling system Water Ignition Bosch or Mea high tension magnetosPerformance Power output 60 hp 45 kW at 1 400rpmSee also editRelated lists List of aircraft enginesReferences edit nbsp Wikimedia Commons has media related to Boland V 8 a b c Aeronautical Society of America Aero Club of Pennsylvania 1907 Aeronautics Vol 9 10 Smithsonian Libraries New York pp 60 102 158 a b c d Angle Glenn D 1921 Airplane Engine Encyclopedia Dayton Ohio THE OTTERBEIN PRESS pp 99 100 Aeronautical Society of America Aero Club of Pennsylvania 1907 Aeronautics Vol 7 8 Smithsonian Libraries New York pp 134 Aeronautical Society of America Aero Club of Pennsylvania 1907 Aeronautics Vol 11 12 Smithsonian Libraries New York pp 174 Aircraft Smithsonian Libraries New York Lawson Publishing Company 1910 pp 116 a href Template Cite book html title Template Cite book cite book a CS1 maint others link Reed Business Information Ltd 1914 10 16 Flight International Magazine 1914 10 16 a href Template Cite book html title Template Cite book cite book a last has generic name help Retrieved from https en wikipedia org w index php title Boland V 8 amp oldid 1125784101, wikipedia, wiki, book, books, library,
