109 prop pitch (rpm) and the supercharger

[Crumpp]

He didn't say explicitly it was non standard, but that was the main reason he described it in his book. And the main reason we quote that part in here. I am sure that even you can see that.

Well, the only quotes I can find do not say a thing about non-standard or varying rpm.

They only talk about managing pitch.

[ACE-OF-ACES]

Originally Posted by Crumpp

Well, the only quotes I can find do not say a thing about non-standard or varying rpm.

They only talk about managing pitch.

Actully that is not correct..

Steinhilper talks about varying the pitch of the prop to increase the RPM of the engine..

Originally Posted by Ulrich Steinhilper

When we flew at that height, the engine only just gave enough pull and we constantly changed the propeller pitch and RPM to improve the performance. With a flat pitch we could increase the RPM of the engine and get more pressure from the super-charger. Then, by changing the pitch to a coarser setting, we could make up some speed.

Hope that helps! S!