Structural failure due to harmonic vibration

Dudley Henriques wrote in
:

Bertie the Bunyip wrote:
Dudley Henriques wrote in
:

Bertie the Bunyip wrote:

We didn't have much trouble with the T-6 and students. When we
finally got the T-28A at Willie (after they machined the crank)
there were several wings bent which would have broken off and
crashed if plastic. I like metal wings.
I like wood ones!


Bertie

I once saw two Sumo wrestlers that I assume were hired by Bellanca,
jumping up and down on the wing tips of a Viking at one of the show
sites where I was performing. If I remember right, it was Bobby
Bishop or Debbie Gary who was demonstrating the Viking at that time.
VERY impressive....and a very strong airplane!



Yes, lovely airplane, though someone did pull one apart doing
aerobatics as I recall. It was someone who had a reputation for
knowing what he was doing, too, not someone who just decided to roll
one one day.

I always thought the little LeBlond powered Junior would be a nice
little thing to have, or even the later Crusairs. Such a pretty
airplane..


Bertie



I've flown the old Cruisair. Real nice airplane and I always thought
ahead of it's time.


well, when you look at the competition, no contest. Same engine as a
108-1 and a good thirty knots faster. Also, that wing is so elegant
looking I just now it has to do exactly what you ask with two finger
control.
I've seen a lot of them for sale recently for very small money, but I#ve
already got too many toys!


Bertie