These shaft-drive cars had a rather unusual double rear axle,[clarification needed] while the engines were built by Aster.
Crankpins and main journals were held in the webs by tapers and a shallow nut, giving the effect of an undercut crankshaft.
The crankshaft was drilled for a pressure oil feed to the crankpins, an advanced feature for this time, but the pistons and gudgeon pins were still lubricated by splash.
They were replaced in the catalogue with new 1500 cc and 2-liter models with an odd arrangement of a three-speed gearbox augmented by two-speed gears in the back axle, for a total of six speeds forward.
[3] After the war, Ariès attempted a comeback, briefly producing moped engines under the name ABG.