"Bill D" wrote in message
...
On Monday, February 25, 2013 5:04:31 PM UTC-7, Dan Marotta wrote:

Way back when, I tried the "benign spiral" in my LS-6a. I found it to be

dynamically unstable in pitch and, after a few cycles without touching
the

stick, it was ready to loop or break Vne.

Did you use full dive brakes?

To tell the truth, I don't recall - probably not. I think I used the
published (in Soaring) procedure but I don't remember if it called for full
dive brakes.