Paul and Jean, Scaling the 3Dm  surface model is a single
 command operation
 if you are scaling  to the same scale.I looked up a few Piaggio
 designs and
 found the listed airfoil as a NACA 23012 at the root and a 4412 at
 the tip
 on both the main wing and the stabilizer and a NACA M-12 on their P7
 series.  You may want to leave the wing scaled down less than the
 fusaloge.          Hopefully the DXF files will have the airfoil
 elements plotted with
 the flap amd aleiron % of chord, if not the ordinates can be
 downloaded. I
 search      ae.illinois.edu canard airfoils     and use the reverse
 directory to find out what is used on airframes of similar
 designs, then the
 main list for the ordinates.  Personally I like the Harry Riblett
 airfoilson the main wing, and Rontz on the canard.

         Have you got any idea what prop clearance you need at
 the rotation
 point on take off.  I am thinking at the stall angle of attack of the
 canard  something like 8" clearance.  It is not as much angle as
 it seems
 since the incidece on the canard has 3 degrees more incidence  The
 full size
 version has five blade props so you will likely need a minimum of
 threeblades with one RH and one LH to get the disk diameter scaled

 down to a
 workable size.
        We will need to know if the CNC foam cutting shop wants
 the airframe
 sliced into workable size pieces or would want it as a complete
 solid that
 he can devide up at his location.  As I remember the depth of the
 machineaccomodates 20" deep sections and the width and length are

 something like 5
 feet by 20 feet
          When you start looking for Glass cloth you might want
 to call
 Steve Thayer at  thayercraft.com in High Point NC.  I get 73 inch
 wide from
 him which reduces the number of seams. He has 3 million yards on
 hand and
 probably that much more lost to the inventory system. They ride
 bicycles to
 check stock quantities. He is building a Cozy and flies a Cessna 175

 george grimes

Do you guys have a shop picked out for making the mold Bucks?  The cnc
machine I use is
able to cut 20" deep x 80" x 18ft long, longer if the mold can be put on an
angle [depending
on the o/a width of the buck but upwards of 20ft would be possible]. I'm in
the process of
getting a 5 axis head [head/head style] designed and built for it, should
make building
molds/bucks that much easier over my current 3 axis system.

Interestingly enough, I've actually designed my own 'Piaggio' type aircraft
but have never built
it to date. I'll send some pics of the model later today.

Jarrett Johnson



Jarrett,      You are the shop we are hoping to have do this project, The
compound curve stuff in particular and likely the wings parts as well
depending on budget.


george grimes