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    • ENGINES >
      • ADC Cirrus II
      • ARMSTRONG SIDDELEY >
        • Armstrong Siddeley Genet
        • Armstrong Siddeley Python
        • Armstrong Siddeley Double Mamba
        • Armstrong Siddeley Cheetah
      • Bristol Hercules
      • J.A.P. V4 Engine (1910)
      • Junkers Jumo
      • Kelly and Lewis V8 (1915)
      • PRATT AND WHITNEY >
        • Pratt & Whitney R1340 Wasp
        • Pratt & Whitney R1830 Twin Wasp
        • Pratt & Whitney R2000 Twin Wasp
        • Microturbo Cougar 022 Turbojet
      • ROLLS ROYCE >
        • Rolls Royce Avon
        • Rolls Royce Dart
        • Rolls Royce Derwent
        • Rolls Royce Kestrel
        • Rolls Royce Merlin
        • Rolls Royce Nene
      • SNECMA Atar
      • Warner Scarab
    • COMMONWEALTH AIRCFAFT CORPORATION >
      • CAC Avon Sabre A94-989
      • CAC Boomerang A46-25
      • CAC CA31 Trainer
      • CAC Ceres VH-WOT
      • CAC Wackett A3-22
      • CAC Winjeel A85-418
      • CAC Wirraway A20-10
    • D.A.P / G.A.F. AIRCRAFT >
      • DAP Mk21 Beaufighter
      • DAP Beaufort
      • GAF Jindivik
      • GAF Lincoln
    • Naval / Military >
      • B.E. 2A (Wings Only)
      • Bristol Sycamore
      • Consolidated PBY Catalina
      • Curtiss P-40 Kittyhawk
      • De Havilland DH82A Tiger Moth
      • De Havilland Sea Venom
      • Fairey Firefly
      • Fairey Gannet
      • Gloster Meteor
      • Miles Messenger
    • Commercial Aircraft >
      • Bristol Freighter
      • Douglas DC-2
      • Douglas DC-3
      • Vickers Viscount
    • Other Aircraft >
      • Auster Aiglet
      • BA Swallow II
      • Cessna 310
      • de Havilland Heron
      • de Havilland Gipsy Moth
      • Desoutter II
      • Duigan Replica >
        • The Duigan Family
        • Ready Models
        • The Duigan History
        • The Duigan History 2
        • The Duigan History 3
        • The Duigan History 4
      • Percival Proctor
      • Victa AirTourer 100
  • ONLINE SHOP
    • Apparel
    • MODELS >
      • Model Kits
      • Assembled Models
      • Airfix Quick Build
      • Metal Earth Model Kits
    • Sluban Building Blocks
    • Souvenirs >
      • Pencil Sharpeners
      • Soft Toys
      • Bumper Stickers
      • ANAM Souvenirs
      • Patches
      • Badges
      • Key Rings
    • Airplane Toys
    • Arts and Crafts
    • Childrens Costumes
    • Gliders and Kites
    • R/C Aircraft
    • Books >
      • New Books
      • Pre Loved Books
    • XMAS STOCKING FILLERS >
      • Adult Xmas Packs
      • Kids Xmas Packs
  • Supporting the Museum
    • Our Supporters
  • Getting There
  • Contact the Museum
  • Links
    • Project Wants and Needs

J.A.P V4 (1910)

J.A.P.V4 EngineClick on image for larger version
Image © Jason Burgess 2014
J.A.P. Engines were the products of J A Prestwich Industries in the UK named after its founder J. A . Prestwich, an engineer who formed the company in 1895.

John Prestwich formed the company in his early twenties initially behind his father's house, then expanded to a new plant in Tottenham in 1911 where he became known for the creation of cinematography projectors as well as a line of internal combustion engines used in early aircraft, motorcyles and stationary engines for plant and machinery.

The company produced 240,000 industrial petrol engines during WW2, and in 1945 production was taken over by Villiers Ltd and the company completely absorbed into the Villiers Engineering Company in 1964.

Early aircraft were light and basic, and required a reliable and lightweight engine to power them. JAP motorcycle engines were often used in this application.

A J.A.P. engine was used in AV Roe's 1909 triplane, regarded as the first all-British aircraft, and for a while Prestwich and Roe had a partnership. J A Prestwich would deliver the same engine to the aircraft manufacturer, allowing them to make local modifications - mainly larger venturi tubes for the carburettor, to allow for greater air intake at altitude. 

Our J.A.P. engine is understood to be built in 1910, is of 35 HP, four cylinder, V air cooled configuration, and was used to power one of the early Australian made aircraft, built by Lawrence Marshall in 1911, and flown in 1912.


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TECHNICAL DATA


Cylinders

Bore x Stroke

Swept Volume

Maximum Power

Weight

Carburettor Fuel System



Four Cylinder V Air cooled





35HP




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