On May 30, 3:50*pm, Robert Moore wrote:
The Boeing 707, and perhaps others, trimmed in this same fashion.
Trim...Relax....Trim some more...Relax...Do it again.......

I'm not familiar with the 707 systems, but a friend of mine flew the
DC-9 and told me it had the same jackscrew trim arrangement as the
short wing pipers (scaled up of course) so I would expect it might
behave the same way. Anyone who has actually flow the DC-9 care to
comment?

Michael