You know it's a good kill when...

[IvanK]

Originally Posted by Robo.

Oh yeah TomcatViP, got it now, and thanks for the info, makes sense!

Regarding the auto mode as we talk about it - it would be worth testing if the revs increase above 5500m automatically:

''The devices for the automatic regulations of the revs
hitherto used will be modified by Messerschmitt and VDM as quickly as
possible so that the short period increase in revs to 2600 for the
DB 601 A and 2800 for the DB 601 N permissable above the full pressure
height can also be made by the automatic device.''

The maximum permitted RPM for DB 601A-1 was 2400, which could be exceeded for short period of time above 5500m - up to 2600RPM.

Here is the original source document to that statement Robo. This is an allied translation of a an original German source document. The exact provenance of this document is unknown, though it came to me by way of Schwarzeman. The document provides some interesting other details. The hand written date is I guess the only real point of debate.




On the subject of the ideal AUTO RPM versus ATA (Below FTH) Relationship I think we can deduce from various RAE test documents, A set BF109T pilots notes (DB601n though) that the most likely relationship would be.

1.4ATA/2600 (DB601N) .... 2400 DB601Aa
1.3ATA/2400
1.23ATA/2300
1.15ATA/2200
2000RPM min governed valued (now confirmed for DB601 from RLM docs).
Remembering of course that the actual determinant of RPM is throttle position

One further point is that in game a Static runup at 1.3ATA will only get you 2000RPM. You should be able to get 2300RPM at zero forward speed.

With these values in mind the Sim needs a little tweaking. Easily done from an instrumentation/animation point of view but the power output would need to reflect these values as well.