In his original post he said "benign spiral"...

My Mosquito had terminal velocity limiting trailing edge brakes.
My ASW-19 did a lovely benign spiral.
My LS-6a was divergent in pitch and would quickly go out of control
without positive inputs.

Haven't tried it in my LAK-17a... Must remember to give it a try at the
end of my next flight!

On 4/8/2015 9:04 AM, JJ Sinclair wrote:
Hmmmmmm, The spiral dive is exactly what you don't want! Think about it, your in the soup, cranked over holding your spiral and the airspeed keeps building. What do you do? Pull back to slow it down, right? There is a name for that situation, its called a dead-man-spiral.
I'm for pulling the spoilers, trim for 65 and turn loose. Try it next time you have extra altitude. I once logged something like 30 minutes in my H-301 Libelle (spoilers closed), she never went over 45 degrees and I hadn't touched anything for 30 minutes.
JJ

--
Dan Marotta