Updated: 30-Nov--0001
They started in the year 1928 as Beaver State Motor Co. to become Aero Motors a year later (1929). Both from the same state Oregon.
They built the 8-cylinder radial Aerobat 15 hp engine with a total displacement of 326 cu in.
"Aerobat radial engine"
"Radial Aerobat"
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