Standard J-1 Manual - Macca's Vintage Aerodrome

The complete airframe before covering
The Model
We have chosen the scale of 1:5 rendering a
model size that i easy to fly but also relatively easy
to transport. Both the upper and the lower wing
panels can be removed as an assembly, for
transportation which gives relatively limited
requirement for transportation size.
The finished model is painted in 1918 livery
and further detailing can be made as per
documentation.
Specification:
Wingspan: 263 cm 105.2"
Length: 160 cm 63.8"
Weight: 6200 g 13lb. 9oz.
Wing surface: 162 dm² 2511 sq”
Wing load: 38 g/dm² 13 oz/sq’
Engine 2-cycle .80 - 1.20
Engine 4-cycle 1.20-1.50
Covering and finish
The model is covered and painted from the
factory. When you have made changes in the fire
wall and adapted the dummy engine to fit in line
with the engine, you will have to cover the open
wood areas with fuel proof paint.
Installation of engine.
We recommend that you don't overpower this
model. It will fly happily with a 1.20 standard 4stroke
engine. Our prototype was tried out with a
Saito 1.20, 4-stroke engine, which gave more than
ample thrust. The engine bearers have been
adjusted for this size of engine.
The engine is mounted upright justifying the
need for adequate cooling.
1. Drill the holes in the engine plywood
bearers and fasten the engine with blind nuts on
the underside of the plywood. Place the engine as
close to the front as possible. The propeller should
be approx 1/8" / 3mm) it front of the nose cowl.
2. Drill the holes from the tank to the
carburator, pressure tap and the filling cap.
3. Install the engine and connect the throttle
servo.
4. Make cut outs in the dummy engine block
so that this will fit in line with your engine. This
"surgery" is executed by removing a little at the
time and checking. When you are satisfied with
the fit and openings, screw the dummy engine on
to the engine mounts using 2 screws and washers.
Make the additional necessary cut out in the top
engine cowling.
5. Reinstall the engine cowl using 4 #2 sheet
metal screws.
The Saito 1.20 is
nicely blending
into the dummy
engine
Standard J1 ARF 7