On 1/14/2021 1:43 PM, John Galloway wrote:
...

Another huge advantage, is they don't have that all-flying tail, which
was quickly designed out of the Nimbus line, for good reason.

The late models DG100G, LS1F and Grob built Std Cirruses have conventional tailplanes. Earlier variants of those 3, and the ASW 15 have all flying tailplanes.


OK, but what is so bad about the all-flying tail? I know some models
had a reputation for no "feel" in the pitch control. Others less so.
Is it the all-flying tail, or some details of its design? Where the
hinge is placed along the chord of that tail would make a big
difference, no? And spring trim added to the system would make it
behave better when hands-off?

For example, Dick Johnson was regularly flying a Nimbus 2 IIRC, when he
did the flight test of the original Janus (both with all-flying tails).
He commented that "The well-balanced, all-movable horizontal tail (on
the Janus) provided good longitudinal stability at all speeds and was a
great improvement over the smaller poorly balanced Nimbus and Std.
Cirrus tails. It did, however, cause the longitudinal control to be
fairly sensitive to control stick position."