Construction Manual
www.oldschoolmodels.com
Page 3
German
Sunday Fighter
Heinschmitt
• Pushrods (two 5” for ailerons, two 20” for elevator & rudder,
one 10” for throttle if glow/gas powered)
• Clevises for the pushrods (8 if electric, 10 if glow).
• 2 - 3.5” diameter wheels.
We suggest Du-Bro’s # 350V vintage style wheels.
• 1 - tailwheel assembly
• Covering - 2-3 rolls
Additional Required Building Tools and Adhesives
• Drill & assorted drill bits
• Hobby knife and new, sharp blades
• Sandpaper: coarse (80 or 100 grit) & medium (150-200 grit)
• Pencil or pen
• Ruler
• String (two 18” lengths)
• T-Pins
• Waxed paper
• Building board
• Adhesives of your choice. We recommend thin and medium
CA (cyanoacrylate) viscosities, 15 or 30 minute epoxy, and
canopy glue
• Epoxy brushes and mixing sticks
• Thread-locking compound
Before Starting Assembly
Closely inspect the supplied laser cut parts for damage. If you find
any damaged or missing parts, contact us immediately.
When removing the laser cut parts from their sheets, you’ll notice
the parts are held in place by several small “tabs”. These tabs
are uncut pieces of wood and can sometimes make it difficult to
remove a part. Rather than breaking and/or splintering the wood
by forcing out the part, we recommend removing any laser cut
parts from their sheets by using a hobby knife with a new, sharp
blade. A quick cut of the tab will allow the piece to be removed
with no damage. Sand any tab remainders flush with the part so
there will be no problem aligning them later.
It’s best to not remove parts from their sheets until they are needed.
Refer to Appendix A of this manual as a reference to what all the
laser cut parts look like and are called.
For each step, we highly recommend that you dry fit the parts in
each step first. Lightly sand as needed to ensure a good fit. Once
you’re satisfied with the fit, then and only then, glue the parts in
position.
IT IS VERY IMPORTANT THAT YOU ASSEMBLE THIS KIT
IN THE ORDER DESCRIBED. SKIPPING FORWARD IN
THE STEPS COULD LEAVE YOU WITHOUT THE PROPER
LENGTHS OF WOOD TO FINISH THE KIT.
WE’VE INCLUDED ENOUGH WOOD TO EASILY COMPLETE
THIS KIT, BUT YOU MUST TAKE CARE TO PROPERLY
MEASURE AND NOT WASTE WOOD WHEN CUTTING.
Closely inspect the supplied laser cut parts for damage. If you
find any damaged or missing parts, contact us immediately.
A FEW THOUGHTS
BEFORE YOU START.
The Sunday Fighter series is inspired by a
design penned by Ken Willard in the March
1974 issue of American Aircraft Modeler. His
were smaller with .049 power, based on the
Ace Foam Wings available at the time.
In his words, “There’s a bit Fokker, or a
Heinkel or maybe even a touch of early
Messerschmitt in this one. So let’s name this
one the Heimschmitt.”
We’ve enlarged his original for .25 sized
powerplants or for equivalent electric with
typical 3S 2200mAh LiPo packs that you
probably already have on-hand.
Ken never intended for these to be anything
other than a design that is a blast to fly on the
weekends, flying for fun, and even competing
with them in club fun-fly events.
We’re very much in-line with this way of
thinking. We see our version of the Sunday
Fighter as “stand way off and squint at it
with only one eye” scale. If you like, it can be
made to resemble several different designs
with simple color scheme modifications. Or if
you’re a bit more inspired, it’s a blank canvas
where you can use your imagination to modify
it into the biplane you’d like.
One last thing. Please, please, please resist
the urge to overpower these bipes. Yes, the
airframe can stand-up to a lot of abuse, but
these are NOT 3D machines. Vintage designs
like these should NEVER be seen hovering,
flying inverted for long periods of time, or
anything related to pylon or IMAC flying.
Just have fun cruising, barnstorming, or
pretending you’re taking on the Red Baron in
a mock dog-fight!
