Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 09-Oct-2018

Rotary radial engine composed of small individual engines in which the gears of each of its crankshafts engage with a fixed central one, in such a way that it is as if they run around it.

Filtz engine
"Filtz engine"

-Of course, the rotation of the main engine is slower, but the power is the sum of all the small engines.

-It is the same as the Breton principle, with 6 cylinders and giving 60 CV. It did not prosper because of vibrations and failures.

From Appendix 11: Factory owned by Mr. Filtz Sr. and sons, engineers with their office known as A & M, in Neuilly-sur-Seine.

Filtz engine front and rear view
“Filtz engine front and rear view”

-The engine was a fixed radial with 6 cylinders giving 60 CV at 1,200 rpm.

-Two better pictures of the engine that appears above.

Filtz de 60 CV front view

Filtz de 60 CV rear view
“Filtz giving 60 CV”

-In fact they are the same photos, but separated and enlarged.

Filtz rotativo?
“Filtz rotary?” (PiP-Flu)

Engines of FILTZ

Model: 6 cyl. radial

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

Other details:
Model: 6 cyl. rotary

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