DB603 superchager - Luftwaffe and Allied Air Forces Discussion Forum

N.Ishigaki · #1 27th July 2006, 14:42

1. Several sources states DB603G attached larger & more efficient supercharger than DB603A. However, figures on datasheets of these engines present similar dimensions. I suppose the difference were impeller size and rotation, could it be true? Then, I hope experts show these values.

2. Which supercharger was attached to DB605AS and DB605D? Some sources states DB603A supercharger and others states DB603G's...

George Hopp · #2 27th July 2006, 19:02

The supercharger of the DB 603A was used in the DB 605AS and 605D engines. The DB 603G never went into production, but as I recall, it was as you said, a higher engine compression ratio for the engine and a higher rotation speed for the supercharger. But, I will check on that.
All the best,
George

N.Ishigaki · #3 28th July 2006, 14:29

Thanks George!

Kurfürst · #4 29th July 2006, 14:28

Quote:

Originally Posted by George Hopp

The supercharger of the DB 603A was used in the DB 605AS and 605D engines.

All the best,
George

Are you sure, George, in just about any publication I read it was the supercharger of the 603G (same case in the DB 603E which went into prod instead of the 603G).

A DB datasheet from Oct 1943 states of the 605D (obviously in development) states it's alike the DB 605A, '...jedoch mit größeren Lader in Ausführung wie DB 603 G...'.