On Tue, 11 Feb 2020 13:59:39 -0800, Bob Kuykendall wrote:

On Monday, February 10, 2020 at 1:00:42 PM UTC-8, Martin Gregorie wrote:

If the OP fits an ASW-20, he'll also fit an ASW-19 or a Centraire
Pegase.

The 19 and 20 used the same fuselage moulds....

As a caution, there's a lot more to cockpit ergonomics than the fuselage
shape. The detail design of the cockpit, including the location of the
wing and undercarriage anchors and control stick mechanism, can have a
substantial effect on the effective anthropometric range. I know that
the Centrair products started off as licensed copies of the AS gliders,
but their design remained relatively static while Schleicher was
continually incorporating minor changes.

As a general rule, the later versions of any particular type are often
better than the earlier ones, as they tend to accumulate minor
improvements that make more cockpit volume available.


Sure, but I've enough time on a Peg 90 and ASW-20 to know that those two
cockpits are very similar. The ventilation difference is easily missed
unless you know about it. The only really noticeable change is that none
of the original 20s, i.e. not the B and C models) had a lifting panel,
while every Pegase I've seen had it fitted as standard. So did many
(most?) of the so-called 'F' model ASW-20s, which were license-built by
Centraire before they fitted a nice unflapped wing to the same fuselage
and called the result a Pegase 101. Incremental changes: the Peg 101s
originally had Hotelliers inside a tiny access hatch same as the 19 and
20 while the Peg 90 is entirely self-connecting.

If you look at the Pegase fuselage sides at about mid-chord under the
wings, and preferably at a shallow angle so you can see reflections
highlighting surface waviness, its quite easy to see where the ASW 19/20
NACA-style ventilation inlets used to be. I was told they'd modified the
moulds to do that: sounds reasonable since that would save finishing work
on each fuselage.


--
Martin | martin at
Gregorie | gregorie dot org