Skylane wrote:I figured that was the Clampets(Beverly Hillbillies) Beaver. Looks a lot like they're stuff off that old truck Jethro was driving.

Well doggies! Now that you mention it, it sure enough does.

shorton wrote:.......the islander suffers from the same thing, Asyncronous vibration from the engines not running in sync. The sound waves go from one side of your head to the other like WAWAWAWAWAWAWAWAWAWAWAWAWAWAWA till your ears fall off.
..............

Isn't it up to the pilot to synch the props? Or for some reason are the Islander's props unsync-able (as in the "unsynch-able" titanic) ?

once flew the Alai mountains into Dushanbe riding in an AN-24 "Coke" twin turboprop. The guy never could sinc the props and the thing shook the whole way. Not WaaWaaWaa but Shudder Shudder Shudder ...

Looking out the window you could see a safety pin holding the left cowling together...

http://www.backcountrypilot.org/gallery ... =38&pos=37
(it wasn't the Hindu Kush - wrote that wrong)

I have a thousand hours in EP-3s (4 eng turbo prop) and about 1500 hours in a King Air 200. I have learned to hear the prop synch rather than look at the gauges. Heck they are mis-calibrated most of the time anyway. Sometimes I get a plane that just won't synch up and hold it. After a few minutes the waves start again...waayyyyeeooooo....waayyyyeeooooo. Sometimes I would mis-synch them on a long transit back to base to put the aircrew in the back asleep...or if my Navigator was pissing me off or whining, I could make the coffee splatter out of his cup!

In the 737, if you get the N1 RPMs off by more than about 1 or 2 %, you get the same annoying vibrations and noises. Of course on long hauls, I usually do it for a while to put the peeps to sleep. Then the lovely girls have time to come up and talk!

zero.one.victor wrote: Isn't it up to the pilot to synch the props? Or for some reason are the Islander's props unsync-able (as in the "unsynch-able" titanic) ?

The Islander syncs up just fine!!!!

Gump

Plenty of time in Twin Otters and it's the same thing if you don't get them synched. The WAWA is just because the guy isn't listening to them. Even with a fas wheel it's best to listen instead of look.
That'll get annoying as hell though.