Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 06-Apr-2020

Manufacturer Loch Laird Engineering Pty. Ltd, has built this twin-cylinder engine known as Dirk 2-500a, a four-stroke engine for ultralight.

-It has two horizontally-opposed cylinders on an electron block that, by their appearance, look like those of the larger radial engines.

Motor Dirk
"Dirk"

-The engine displaces 514 cc and gives 36 hp of continuous power at 5,200 rpm. and 41 hp at 6,400 rpm, weighing 43 Kgs. (depending on data received). It has double ignition.

-There is a possibility to install gear and also an IHI turbocharger. In this case, the power rises to 57 hp and this is maintained at high altitudes.

Engines of DIRK

Model: 2-500a, 2 cils. boxer

Arquitecture:
Cooling:
Total Displacement: 514 cc
Bore / Stroke:
Power: 41 HP @ 6400 rpm
Weight: 43 Kg

Other details:
Dirk engine

"Dirk engine"

The author of this edition of Aeroengines AtoZ, through Aeroteca, collaborated on Version 2 of this video, which is presented here.

To understand the operation of the connecting rods, the 1929 Continental R 670 single-cylinder engine was chosen.

A demonstration of Version 3, improved at the author's suggestion, is also available on YouTube at a later date. This version shows bronze valve guides, improved valve spring movement, and the split crankshaft counterweights and front bearing balls also move.

The design is from Juan Soler, Sant Cugat, Barcelona

Below we show a flash of version 3

Counting also with the coloboration of JMC of Enginys Mecanics in Mataro, Barcelona