RPM flight dynamic question

[lawdawg]

Why does aircraft bounce when changing RPM in flight sim?
That drives me nutz and I do not understand. Some do it...some don't.

[Thoe6969]

Why does aircraft bounce when changing RPM in flight sim?
That drives me nutz and I do not understand. Some do it...some don't. Mine don't do it when reducing by throttle,but prop pitch does.

[fliger747]

My Wild Az Guess? FS may be stuck with some primitive fixed pitch paramaters. Certainly the development of CHT seems mainly linked to RPM, which for a constant speed prop is the height of goofiness. By changing the RPM of a constant speed prop you are changing it's rotational momentum, so perhaps the sim is responding to that. My experience with real planes? should be a pretty small effect if preceptable at all. I hadn't noticed this, particulat aircraft?

Sparks or any ACES guys have any insight on some of this stuff?

Cheers: T.

[lawdawg]

Thanks for the replys.
I notice this when bumping down the RPM on the Beaver for example. SOmetimes I use the default one (which has the described behavior).
Sometimes I'll use the Aerosoft version, to which the RPM shift does not make the plane bounce.
I can't think of the others I noticed that exhibit the bounce.