Hello Mark,
I sure hope the Plastic Trainer -19
is working for you.
If you want, send me a PM and I'll measure
the Curtiss, but you'll need to do a lot of interpreting.
I've been studying my Curtiss pusher reference,
and the Cox model is a very loose version of
a "headless" Model E.
The type on the top wing should actually say
"BEACHEY". Lincoln Beachey invented the headless
configuration by hitting a fence. He had a paid
contract for a demonstration flight, so he flew anyway.
Even the Wright Brothers thought it was a good idea
and produced the "Wright Headless Baby".
There are a lot of things that will be problematic
if you build a Cox replica.. The wing to upright strut
connections will need some serious thought. Cox
just molded a socket into the wing edges and plugged
in plastic sticks. That would be hard to replicate
with Balsa.
I suspect that Cox may have had trouble getting
the Curtiss to behave. The configuration of the tail is
very different from any real Curtiss that I can find
and the Cox design is much more complicated than
basic mechanics require.
I'm thinking that what I need to do is draw an
archive drawing of the Cox and let people make
their own decisions.
I think it's dishonest to present a design online
that isn't fully flight tested so that will need to
wait until later.
Cheers! - K.