I was gonna ask when the last time you had your props serviced... with such a new plane, it should be covered under warranty. 

 

 

However, I wouldn't tell them you've been doing loops and "Watch This!" maneuvers with friends aboard.

 

 

Just keep that to yourself.

Hey Tim..... Are you SURE the seals on the Scotch were not broken before the vibrations happened? Wait a minute....that would of helped smoooth out the flight!

Glad you got it figured out! Happy flying

What did you set VNE to?

I posted a response in the B200 forum which may be able to assist with b1900 handling:

http://www.avsim.com/topic/388523-list-of-outstanding-issuesbugs-b200-edition/?p=3290739

"Very Old thread, but thought I might add what might be a solution/workaround. Re dutch rolling at higher FL, I found keeping your indicated airspeed not within 10 knots of the barber poll gives you a smooth ride at any FL. ( Tested upto FL290 so far - pressurization issues beyond that ).



this applies to the decent also. I know some SOPs recommend barber pole to 10,000 then 250 and below. but I can manage a comfortable 1,500fpm descent TRQ's between 1200-1400 ft/lbs and RPM's 1700. reducing TRQ gradually as you get into thicker air.



I hope this helps anyone out there frustrated with the yaw and rolling.



btw: for those experiencing right hand RPM fluctuations on climb I find turning the prop sync off and manually syncing the props help once stabilized for a few minutes - prop sync back on."