Updated: 30-Jan-2020
In 1936, Mr. Boitel (Aquiles F. Boitel) created in his facilities an engine for light aircraft, based on information from the Hungarian Sklenar (see).
"Boitel-Soleil"
-With 5 radial cylinders, its power was between 50 and 70 hp at 1,900 rpm.
"Boitel-Soleil, frontal"
"Boitel-Soleil, lateral"
-There was a Botali Diesel 8-cylinder that gave 118 hp at 2,000 rpm in 1937.
"Boitel-Soleil radial 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