Era Model Service
Quality Plan Sets for Radio Control Aircraft
Carl Goldberg's 1938 Comet Clipper
The lite-ply pivot plate.
The completed outer elevator hinge with a balsa retainer at the end of the pin.
tail assembly was made removable on the prototype, but it can just be
glued on the mounting plate on the fuselage after covering. The
first step was to put he fin in place on the stabilizer and some
1/16 balsa was glued between the middle and rear spars, laminated and
formed to fit against upper the stabilizer sheeting. A lite-ply
part was glued in placed next to the middle fin spar and the fin was
removed from the stabilizer. A hole was drilled and a 4-40
nut plate was installed. A 4-40 machine screw was inserted from
the top and used to make an impression on the stabilizer top
sheeting to es as a guide for drilling through the
stabilizer. The balsa block sitting on top of the stabilizer in
this photo was fitted in between the stabilizer sheeting, centered on
the hole impression. Note the grain is vertical to resist the
compression from the machine screw.
balsa locating dowel was installed in the aft portion of the stabilzer
sheeting, extending into the balsa tail blocks at the end of the
fuselage. A hole has been drilled through the stabilizer sheeting
and the machine screw is installed, extending down through a
lite-ply plate. See the next photo.
Leading edge clamping. Titebond III was used for this join.
A view of the pins and blocks used for the rudder
hingeing. Making the tail removable required some modificatin of
the lower fin ribs that rest on the stabilizer in the area below and
aft of the rudder..
A balsa block was
installed to fair the front edge of the stabilizer mount. Not on
Goldberg's original plan.
II Building Photos and Notes
Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18
Index Page John Eaton's