Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 27-Feb-2019

These engines are designed and built by HCI Aviation. They are two fixed radial engines intended for home-builders as an alternative to current engines that are not suitable for reproducing classic-scale aircraft, as it is difficult to locate Kinner, Viale, LeBlond, etc. HCI makes a 5 cylinder and a 7 cylinder.

HCI 5-cylinder engine
“HCI 5-cylinder engine”

-The five-cylinder gives 75 hp at 2,150 rpm. with 180 cu. in. of displacement. It is the R-180 model. It has electronic ignition without breakers or distributor. The fuel-injection control is electronic too.

HCI 7-cylinder engine
“HCI 7-cylinder engine"

-The seven-cylinder engine is the R-220 model that gives 123 hp at 2,500 rpm with a total displacement of 220 cu. in. Ignition and injection are equal to the 5 cylinder model.

-It has an optional starter and alternator.

Engines of HCI

Model: R-180, radial 5 cyl.

Arquitecture: 5-cylinder Radial
Cooling:
Total Displacement: 180 cu. in.
Bore / Stroke:
Power: 75 HP @ 2150 rpm
Weight:

Other details:
HCI five-cylinder engine

"HCI five-cylinder engine"

Model: R-220, radial 7 cyl.

Arquitecture: 7-cylinder Radial
Cooling:
Total Displacement: 220 cu. in.
Bore / Stroke:
Power: 123 HP @ 2500 rpm
Weight:

Other details:
HCI seven-cylinder engine

"HCI seven-cylinder 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