Micron Wings Sopwith Pup Manual
Sopwith Pup (Build Instructions)
Specifications
Wingspan: 38cm
Length: 29cm
Flying Weight: 46grams
Channels: 3 (Rudder Elevator Throttle)
Suggested Receiver: 4Ch Micro
Motor: 7mm Geared Motor
Airframe Kit
(Included Contents)
* Airframe Covering Parts (balsa)
* Airframe Skeleton (hardwood)
* Carbon pushrods
* Wheels and rubber tyre rings
* Fine sand paper
* Control linkages
* Decals
Needed to Complete
* Thick CA Glue
* Micro Phillips Head Screwdriver
* Long nose fine pliers
* Hobby Knife
* Ruler
* Household Pins
* Hobby Masking or Other Tape
* Tweezers
* Small Screwdriver
* Felt pen
* Patience
* Keen Eyesight
* Steady Hands
* Receiver Transmitter Charger Battery
* Motor and Propeller
(see instructions for suggested RC gear setup)
Battery Options
The Nanotech 300mah 1S battery is
recommended for best balance.
If using the Nanotech 160mah or similar
battery, you will also need to add some
ballast to the nose.
Before You Start
This airframe has been designed to fit together easily with all components precision drilled and
CNC cut from high quality balsa and paulownia wood. However, you will be working with very
small components, so you will need patience and keen eyesight. We recommend working in a very
well lit area and taking a break between stages to rest the eyes and hands. Most of all, take your
time, enjoy the building experience and you will be proud of what you have produced in the end.
First, refer to this and the following pages to ensure that you have all the required airframe
components in your kit.
Decal Stickers
Airframe Wooden Parts
Additional Parts
Before starting you may wish to lightly sand
down all the flat surfaces of the parts if you
want to have a smooth finish. It’s easier to
do this initially, especially in areas such as
the wings where ribs will get in the way of
sanding when complete.
When removing parts from the sheets, identify where the cut line is sectioned and cut that part
with a sharp pointed hobby knife. The parts should be able to be removed easily. Never twist or
bend the parts back and forth to remove them as this will damage the parts. Instead cut around
the parts as necessary to easily remove them.
Glue together the control system mount as shown below. Allow this part of the frame to dry
before gluing in place the X shape piece on the front.
Construct the circular mounting frame and screw in the control system mount. This is temporary
and just holds everything in place while the rest of the frame is being constructed and is drying.
Your frame will look like the image on the left. Now it’s time to glue in place the C shaped part
and make the frame look like the image on the right. Once again note the orientation of the
control system mount when gluing in the C shaped piece.
Slot in without gluing, one of the 4 parts you set aside earlier to hold this C shaped part square
while drying.
Set these 4 parts aside for the next step
Note Orientation –The two cut out for lugs are at the bottom.
Screw in screws temporarily
Screw in from this side
Then glue in place the rear most part with the two protrusions each side. Once again use the 4
braces put aside earlier to hold this square while drying. Then go ahead and glue those 4 parts in
place.
We are now ready to start work on the fuselage. Identify and cut out the parts shown. Then glue
them in place as shown in the image. Allow time for each part to dry before gluing the next.
Longer one to top
Keep the middle hole underneath clear of glue when
gluing on the top supports. The bottom hardwood
formers slot into there.
Ensure that the second hole in from either side is clear of glue as another
part needs to slot in there in the next step.
These lugs are closer to the top at the end
which glues too the balsa.
Attach the part you have just made to the hardwood frame. Ensure all parts are glued at 90
degrees angles. Set aside to dry.
Score or crease the side panels as shown here (do not cut). Then gently bend them to about 10
degrees. You can also cut out the elongated pushrod slots at this point.
Do not glue the sides together at
the back. The tail skid will be
inserted in here later.
Glue the sides of the fuselage on
but be sure to leave these parts
open to be glued onto the frame
later when attaching the top and
bottom plates.
Score and bend
Note the orientation of this part when gluing on the rear
fuselage frame to make sure you glue these two pieces
together the correct way.
Use a sharp hobby knife to cut out these panels. Then bend the bottom plate where shown.
Glue on the bottom plate. Glue down the sides to meet flush and tape with modelling tape if
needed. The perforated section of this plate will later be cut out to form the hatch cover.
Note that the plate should NOT be glued at the front or back here.
Before gluing in place the top plate, wet it with some water and slightly bend it as shown. Allow to
dry before gluing in place.
Cut panels out
Score and bend
Score and bend the tail piece up to match the body line.
Attach the tail skid. Look from the back and make any adjustments to the body alignment while
gluing.
Also cut out the bottom hatch plate. Some scrap wood can be used to glue across the hatch on
the inside surface to strengthen it.
Glue in two magnets into the holes as shown here. Ensure that you test the magnets to make
sure they will attract correctly to close the hatch. Also glue on the front hatch lugs. These may
need to be sanded or the holes in the hardwood frame cleaned out and scraped to allow the lugs
to insert easily. Also sand the edges a little.
Next remove the parts below to make the cowl. Be careful to remove the parts with the stepped
edges in one piece as shown here. These pieces are used as a template to position the other cowl
pieces before being cut away later. Start by gluing in the magnets as shown.
Glue the parts in place as shown below. Note that the first ring you put on will be lower than the
second one. This is to allow for the balsa sheet to wrap around and sit flush.
When gluing on the balsa sheets look for the positioning lugs on the hardwood frame which are
used as a starting and finishing point to wrap the balsa from.
Finally, cut away the positioning pieces and sand the cowl to smooth the edges.
Magnets
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