Chris,
Excellent Analysis.
Since the 320 has got to be the most individually modified kit plane, could
you be more specific about details of the elevator system in the 320 used
for comparison:
1. Was the elevator bell crank arm 4" (original design) or 3" (popular mod)
as this affects stick forces and movement distances?
2. Since the spring trim system was used, was the trim
the original crucifix and spring system or was the Reichel
trim wheel with stronger springs used?. This has some effect on trim
rigidity and stick forces for elevator movement away from the trimmed
position. You did mention that trim tabs could alter certain results (even
the tab sizes used by builders may be quite different).
3. Was the bob weight installed? Recently some builders
claimed that they did not install the bob weight that was designed to
increase stick forces under increased aircraft loading.
Considering these variables, what implications might they have with respect
to observations/conclusions made in your report?
Thanks,
Scott Krueger
In a message dated 4/22/2014 6:58:47 A.M. Central Daylight Time,
troneill@charter.net writes:
On Apr 21, 2014, at 10:43 AM, Chris Zavatson wrote:
Last year after I posted the results of some MKII stability
testing, it was suggested the same exercise be repeated with the
original tail. Dan Meyer offered up his beautiful 320 to be
instrumented and used in repeating the same series of tests wth the
small tail. He did a great job following the maneuver definitions and
flight cards which produced some very nice data.
Chris Zavatson
N91CZ
360std