Unless you have a fairly catastrophic mechanical failure, such as a seizure, it is unlikely that a fixed-pitch prop will actually stop. Therefore a windmilling prop is a better simulation. Not sure about a VP prop, however. I imagine a loss of oil pressure associated with engine failure will mean it goes to the coarse stop under spring pressure and there's nothing you can do about it (this of course depends upon the way the CSU system is organised).
You can practice in a fixed pitch prop by going up to altitude, pulling the mixture and reducing airspeed until the prop stops. You can compare RoD with that with a windmilling prop. Make sure you have sufficient height left to restart and/or a suitable landing place in mind should it fail to restart.
Last edited by eyeinthesky; 18th Jul 2004 at 15:09.