Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 04-Oct-2025

In a publication by the Danmarks Tekniske Museum Arbog, an aircraft, also on display at the museum, appears with a 7-cylinder radial engine built by Viggo Jensen, an employee of the Christiansen company, which also built the aircraft that mounted it, a type of Bleriot.

Christiansen Aircraft with Viggo Engine
“Christiansen with Viggo”

From Appendix 9: The engine referred to in the main text, of this brand, of which only an illustration of the aircraft that installed it is offered, has now been photographed by Evzen V., who kindly offers it to us.

Viggo Jensen's 7-cylinder Radial
“Viggo Jensen's 7-cylinder Radial”

Semi-rear view of Viggo Jensen's engine
“Semi-rear view of Viggo Jensen”

Engines of VIGGO JENSEN

Model: 7 cyl. radial

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