Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 09-Mar-2020

Also known as De-Lassus, name of its creator.

-It is a fixed radial engine with an interesting ball system that replaces the pistons and with no connecting rods.

De-Lassus radial engine
“De-Lassus”

-When the crankshaft is rotating, the balls are introduced successively into the cylinders, acting as pistons.

-There was a more practical design like the LeRhone-De Lassus.

LeRhone-DeLassus cross-section
“LeRhone-DeLassus cross-section”

-This is the version of the bi-rotary radial engine according to the principle contributed by theoretician De-Lassus.

De-Lassus bi-rotary principle
"De-Lassus bi-rotary principle"

Engines of LASSUS

Model: Bi-rotatorio, LeRhone-DeLassus

Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke: x
Power:
Weight:

Other details:
Model: Radial sin pistones

Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke: x
Power:
Weight:

Other details:

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