109 e4 performance

[Robo.]

Originally Posted by Kwiatek

I wonder how supercharger control - variable hydraulic speed or 2 postion could affect on performacne. Surly speed curve for hydraulic is smooth without power lost between gears but other hand it could casue some lost.

That's not what I wrote . I said the V15a's engine was lacking 45PS (nothing to do with the supercharger) and the actual curve had to be calculated for guaranteed engine output. A different supercharger control would only make a difference between 2200 and 4800m, not down on the deck. The only problems mentioned (except major issue with the engine performance) was lack of manifold exhaust covers and rough finish of the engine cover.

Originally Posted by Kwiatek

So i think speed for 109 E-3 with 1-minute emergency power depend of radiator settings ( 1/4 open or close) and type of engine Db601 A or DB601Aa was in range 485-500 km/h.

And I agree. The Aa should behave slightly different down low and the EN rating was different, too. That's why I am asking if we really have (or suppose to have) a Aa 601 or A version.

Can you guys put a chart together with exact information (all rated ata settings, rpm, rad setting...) for both DB 601A and DB 601Aa with aproximate guestimated max TAS at the sea level?