Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 12-May-2021

According to some information the company was founded in 1928. Other information indicates that it operated between 1936 and 1948 and was called "Poyer Aircraft Engine Co.".

Poyer 3-40
“Poyer 3-40”

Poyer made two models of 3-cylinder radials, both with a displacement of 142 cu. in. The 3-40 gave 40 hp and the 3-50 gave 50 hp. The latter rotating at 2,750 rpm.

At the USNA there is an entry of Poyer engine documentation, in the period 1944-48 with an incomplete reference -? - / 452.8.

-We added a better view of the Poyer 3-40. We now know that the 3-50 is identical to the 3-40 but with the compression ratio increased to 6.5 to 1.

Poyer 3-40, fig. 2
“Poyer 3-40”

Engines of POYER

Model: 3-40

Arquitecture: 3-cylinder Radial
Cooling:
Total Displacement: 142 cu. in.
Bore / Stroke:
Power: 40 HP
Weight:

Other details:
Poyer 3-40, fig. 2

"Poyer 3-40, fig. 2"

Model: 3-50

Arquitecture: 3-cylinder Radial
Cooling:
Total Displacement: 142 cu. in.
Bore / Stroke:
Power: 50 HP @ 2750 rpm
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