Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 27-Jun-2018

ACE (American Cirrus Eng. Inc.)

(USA)


ACE (American Cirrus Eng. Inc.) engine specifications

This company was based in Belleville, New Jersey.

-In the year 1928 they were building a radial engine with 7 cylinders giving 140 hp. (Later this engine would be known as Jacobs LA-1).

-In 1929 they were building British Cirrus engines under license for the US market. Especially the four-cylinder ones. These engines with four upright cylinders gave 95 hp.

ACE Cirrus 95 HP
“ACE Cirrus 95 hp”

-The MkIII (1929) that gave 90 hp had inverted cylinders. The supercharged version gave 110 hp.

ACE Hi-Drive
“ACE Hi-Drive”

-The MkIII Hi-Drive from 1931, also gave 95 hp.

-As from 1929 this company was known as ACE “AirCraft Engine Corp.”.

Engines of ACE (American Cirrus Eng. Inc.)

Model: ACE - MkIII Hi-Drive

Arquitecture: 4-cylinder In-line
Cooling:
Total Displacement:
Bore / Stroke:
Power: 95 HP @ rpm
Weight:

Other details:

The MkIII Hi-Drive from 1931, also gave 95 hp.

ACE Hi-Drive

"ACE Hi-Drive"

Model: ACE- Cirrus MKIII

Arquitecture: 4-cylinder In-line
Cooling:
Total Displacement:
Bore / Stroke:
Power: 90 / 110 HP @ rpm
Weight:

Other details:

The MkIII (1929) of 90 hp had inverted cylinders.
The supercharged version would give 110 hp.

ACE Cirrus 95 HP

"ACE Cirrus 95 HP"

Model: Jacobs LA-1

Arquitecture: 7-cylinder Radial
Cooling:
Total Displacement:
Bore / Stroke:
Power: 140 HP @ rpm
Weight:

Other details:

In the year 1928 they started to build this engine. (Later it would be known as Jacobs LA-1).

ACE LA-1

"ACE LA-1"

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