Well I have no compulsion to use High Idle as you put it...All I was trying to do was point out that you and Darrian were saying something completely different than what had been said earlier and I was trying to figure out which of you is correct. Thanks for the explantion.

Thank you very much sir! :)This is just what I was looking for. I was going crazy with myTwin Otter taxing out of control.beta_min = 15.2 //Minimum blade pitch angle for constant speed prop, (degrees)This cleaned up everything nicely.