Dynamo identification

[Parazine]

I don't recognise the dynamo.
On the DEL the end casting that has the dynamo housing is one-piece aluminium.
The one in your picture seems to be two parts, the brushes carrier and distributor mounting.
May well be equivalent however.

There are two variants of CAV DEL; the short armature and the long armature. Both of these were 4 pole machines with the half-charge resistor built into the field winding.

The short armature dates from the first coil engines of 1928 to December 1929. The end casing was fabricated as shown in the picture and the armature shaft is shorter than later versions. The picture shows a short armature CAV DEL.

The DEL long armature dynamo featured an end casing cast in one piece, with a longer armature and one piece field casing. This machine gradually morphed into the Lucas C35A, which was a two pole dynamo fitted from 1931 onwards.