This is
the second version of the Clipper. Both were sold as Kit T-7.
The first version, which had a single dihedral joint has in
later years been called the Mark 1,
and
this version which has polyhedral has been called the Mark 2. As
near as I can determine, the first version was sold for one year,
1937, and then the
polyhedral
version
replaced it in 1938. The "Mark II" has a slightly shorter
cowling, side stringers on the fuselage, and a completely different
spar structure in the wing.
I was able
to find an original Mark II kit still complete in it's original
packaging and based the plans on that kit. The airfoil
transitions go from undercambered
at the
root to symmetrical at the tip. The only way to produce accurate
ribs was to scan the original die cut parts as the ribs were not
included on the
Comet
plans. I set up the ribs with feet so the wing can be built on
the plans, and drew the parts to include a transition to 1 degree of
washout from
the
polyhedral joint to the tip.
Plan
Span 71.8 inches AR 7.59 t/c ~8.75% at root, 7.5% at
dihedral break, 4.75% at tip rib
Wing Plan Area 678.6 4.713 sq feet
Horizontal Tailplane area 163.9
Min. Wt at 8 oz. 37.7 oz.
Min Wt at 10 oz. 47.1 oz.
Weight of prototype with 2200 mah battery is XX ounces.
The
plans are detailed with building notes and show every part. Plans
are $25 plus postage. Laser cut partial kits
are available for $80 plus postage.
Strip wood and sheet balsa will need to be added. Postage is
only charged
once for orders for
both plans and parts.
To
allow
me to quote the cost of postage please contact me
at jeaton@afes.com with your
address and I will calculate the actual postage.
A detail of the plans for the Clipper