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JPX PUL 425

From Wikipedia, the free encyclopedia

JPX PUL 425
Two JPX PUL 425s mounted on a Lazair 2
Type Two-cylinder two-stroke engine
National origin France
Manufacturer JPX
Produced until the early 1990s
A Lazair II two-seat trainer has one of its JPX PUL 425 engines started. Lazairs generally do not have electrical systems and their engines are started by recoil start.

The JPX PUL 425, also called simply the JPX 425, is a French twin-cylinder, horizontally opposed, two-stroke aircraft engine.[1]

The engine was produced only until the company went out of business in the early 1990s. The company was re-formed but the engine remains out of production and unsupported for parts.[1]

Design and development

The engine has two cylinders in a horizontally opposed configuration, with cooling fins on the cylinders. The single ignition system uses a coil and points. Fuel is metered by a single Tillotson butterfly-type carburetor. Starting is by a recoil starter system with electric start as an option.[1]

The 425 has a redline rpm of 4600 and does not use a reduction drive. Its weight of just 38 lb (17 kg) gives the engine a high power-to-weight ratio.[1]

Applications

Specifications (425)

Data from Cliche[1]

General characteristics

Components

  • Fuel system: Tillotson butterfly-type carburetor
  • Oil system: premixed oil and fuel
  • Cooling system: air cooled

Performance

  • Power output: 26 hp (19 kW) at 4600 rpm

See also

References

  1. ^ a b c d e Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-4 Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4


This page was last edited on 11 June 2023, at 03:05
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