Pegasus Models PHASAR User manual

Pegasus Models Phasar
By Algy Yates 1
Pegasus Models – PHASAR
The Phasar is not intended to be a 1st model to fly or build. This is your opportunity to build a
very individual model. I can quite honestly say that you will not see another exactly the same
as yours. You will have the pleasure of constructing your own airframe, with the opportunity
to incorporating your own ideas / modifications and, best of all, colour scheme.
Disclaimer
I take no responsibility for the airworthiness or safety of your model.
Note also that radio controlled aircraft are not toys and should be treated with respect, only
being operated by competent pilots or under the supervision of a competent pilot.
This write up is to show you the sequence I used during my build and modifications I carried
out to allow the use of a CRRC Pro GF26i V2 petrol engine. That said they might be of help,
by acting as a guide to anyone building this aircraft. The main areas I have changed are the
nose, with the engine inverted and larger, and secondly the incorporation of a swept carbon
undercarriage.

Pegasus Models Phasar
By Algy Yates 2
About the kit.
The kit consists of veneered foam components, CNC milled sheet Ply and Balsa strip,
Vacuum Formed parts and there is a basic hardware pack.
What you will need to get.
Glues: PVA, 5min Epoxy, 1Hr Epoxy, Cyno, Cyno Kicker and Laminating Epoxy.
Extra Hardware needed: 3 ¼” spinner, 3” wheels, collets, petrol bung, control rods, covering
& fuel proofer.
Radio Gear: 5 x high torque servos (preferably Digital) for the control surfaces, 1 x standard
servo for the throttle, high capacity receiver battery, ignition battery (petrol engine aircraft
only) and a electronic cut-off switch for the ignition (petrol engine aircraft only).
Additional Tools: Other than the normal modelling tools, incidence meter (recommended) and
basic jig (ply board as seen in accompanying photographs is recommended).
Getting started.
You will note that in each section that I have included: a picture, recommended an adhesive
and listed the new wooden parts needed.
1) Join the front and rear sheet
section of the fuselage sides. Do
this by taping the outside of the
joint making sure the top line is
true. Then flex back the joint,
apply the glue, lay the assembly
flat on your board and weigh it
down.
Balsa Parts 1 & 2
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 3
2) Use Part #7 to mark both
inside faces of the fuselage
sides, to show “Wing Key” slots
and servo cable access hole.
Make sure you make a Port &
Starboard (STBD).
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Nil
3) Mark the inside faces using
the ½ scale plan for the
dimensions. Noting which side
the strip is glued.
Allow 2 ¼” for Part #5.
Trim Part #4 to fit between the
“Wing Keys”.
Balsa Parts 5
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Nil
4) Build up the frames using ¼”
x ¼” (Part #3), strip (Part #6)
and Sheet Parts #4 & 5.
Pin or weigh down on a flat
board and leave to dry.
Balsa Parts 3,4,5&6
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 4
5) Glue on doublers (Part #7),
you may need to sand the
framework flat first. Ensure the
doubler is inline with the top
and front of the outer balsa skin.
Weigh down until fully dry.
Then cut out the Wing Key slots
in the outer skin.
Balsa Parts Nil
Lite Ply Parts 7
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
6) Once you are sure the
assembly is thoroughly dry align
the top and front edges and
clamp the sides together. Now
sand the bottom edge to make
both sides match closely.
When your happy, de-clamp and
cut out the servo lead cutouts.
Balsa Parts Nil
Late Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Nil
Sorry No Picture
7) Mark up the frames (Parts # 8
& 11) to ensure the top spacers
(Part #10 & 12) are aligned with
the top & bottom of the tongues
on the frames. Ensure a close fit
to the “Wing Keys”.
When your happy glue the
spacers into position. Note they
are glued edge one.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts 8,10,11 &12
Other Components Nil
Recommended Glue 5 Min Epoxy

Pegasus Models Phasar
By Algy Yates 5
8) Put a layer of tape over the
top “Wing Key” to protect it
while you sand the spacers flush
with the “Keys”.
Now glue on the remaining parts
(#9 & 10), be very sparing with
the glue, you can add fillets later,
but it is very hard to remove glue
from inside the “Key Ways”.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts 9 & 10
Other Components Nil
Recommended Glue PVA
9) Mark the centre line of the
“Wing Keys” on to the “Wing
Boxes” and a mark 15mm in
from the ends of the tongues.
Mark the centre of the captive nut
packers (#15). Glue them in place
so that the outer edges are lined
up with the 15mm mark and they
a centred on the key centre line.
Balsa Parts Nil
Lite Ply Parts 15
Beach Ply Parts Nil
Other Components Nil
Recommend Glue PVA
10) Drill the “Wing Boxes” with
the “Wing Keys” in place, using
a 6mm drill bit and drill
perpendicularly right through.
Now remove the “Keys” and drill
the packers and that side of the
box only, to 8.5mm.
Insert the “Keys” before
hammering in the captive nuts.
Note: The Port keys are ahead of
the STBD ones.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nuts
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 6
11) Mark the C/L and thrust line
(60mm up from the base) onto
the “Engine Bulkhead” (#16).
Now you can mark the positions
of your engine mount fixing
screws. Drill the holes and fit the
captive nuts. Much easier to do
now!
Note: You can see how close the
CRRC26 mountings are to the
edge.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts 16
Other Components Nuts
Recommended Glue Nil
12) Make sure you have all the
Wing Boxes the right way up and
the right way round, before
gluing them and the Bulkhead
into position. Ensure that
everything is square as there isn’t
any side thrust on this aircraft.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue 1Hr Epoxy
13) Cut the triangular balsa
Bulkhead reinforcing strips
(#17), relieving them around the
captive nuts and ensuring a
close fit. Take care not to get
glue inside the captive nuts; a
trick here is to put a small piece
of tape over the back of the nuts.
Balsa Parts 17
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue 5 Min
Epoxy

Pegasus Models Phasar
By Algy Yates 7
Wing & Tail Construction
14) Place the Wing Key into the
Wing Boxes (ensure the Port ones
are ahead of the STBD ones and
that they are all the right way up)
and fit the bolts.
Use the Lite Ply Root Ribs (#69)
and mark the position that the foam
core should come to.
Balsa Parts Nil
Lite Ply Parts 69
Beach Ply Parts 13 & 14
Other Components Nil
Recommended Glue Nil
15) Ensure the Wing Keys fit
correctly into the wing panels, trim
core as required.
Put tape over the top of the key slots
and bolt the Keys together.
Now apply epoxy to the slots and the
Keys. Slide the Keys into the wing
panels and weigh both wings down
(top surface down) on a flat bench
and check the lines on the Keys are
aligned with the foam cores.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue 1Hr Epoxy
16) Once the Keys are fully cured,
unbolt the assemblies.
Glue in place the Leading (#65)
and Trailing Edges (#64) and allow
to dry before sanding roughly to
shape.
Balsa Parts 64 & 65
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 8
17) Fit the inner Trailing Edge
Core (#63), ensuring its aligned
with the wing root and the top
surface.
This will make fairing any
differences easier.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components 63
Recommended Glue PVA
18) Cut a section of trailing
edge strip (#67).
Fit the Balsa trailing edge strip
to the inner Trailing Edge Core.
Balsa Parts 67
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
19) While the root end is drying
fit the tip blocks (#68) and cut
off (& retain) the small piece for
the aileron.
Balsa Parts 68
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 9
20) Let the wing components
dry thoroughly.
Move to the ailerons and fit the
trailing edge balsa strip (#67).
This needs to dry fully before
fitting the aileron leading edge
or you could end up with a
warped aileron (not good).
Balsa Parts 67
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
21) Put some packing tape on the side of
the fuselage and cut out holes for the Wing
Key. Cut the Root Ribs (#69) to remove
the sections for the Wing Keys.
Only work on one wing at a time. Mix up
some Laminating Epoxy with some Micro
Balloon and apply to the wing root and
roughly fit the Root Rib then fit the key
into the fuselage and fit a bolt into each
key.
Make sure all look well and close fitting
before leave it to dry, and then repeat for
the other side.
Balsa Parts Nil
Lite Ply Parts 69
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Laminating Resin
22) Glue a piece of scrap 1/8”
Balsa to the exposed foam at the
end of the inner trailing edge
section.
Balsa Parts Scrap
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 10
23) Mark and cut out the lower
surface of the wing to accept the
servo boxes.
Try to make the surfaces as
smooth as possible.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Nil
24) Build up the servo boxes
from the Balsa (Parts #70, 71 &
72) using cyno or PVA. When
dry you should cut a hole for the
servo cables and check your
chosen servo fits.
Once happy glue into place with
boxes in place with PVA.
Balsa Parts 70,71&72
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
25) Sand the wing to shape and
fill using light weight filler.
Take your time when sanding
the Wing Keys to ensure that
you do not sand the veneer
away, a tip here is to apply
masking tape each side of the
Keys to protect the veneer.
Then apply the glass bandage
using laminating resin.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components 74
Recommended Glue Resin

Pegasus Models Phasar
By Algy Yates 11
26) Cut out an area centred on
the expected servo output, to
accept a Balsa Block.
Taper the block to ensure a close
fit without distorting the aileron
skin.
Glue the blocks in with PVA,
use enough so that a good joint
is guaranteed and wipe of the
excess with a damp cloth.
Balsa Parts Block
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
27) Glue the aileron leading
(#66) edge in place, make sure
you do not distort the foam
cored section.
Allow it to fully dry.
Balsa Parts 66
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
28) Fit hard wood blocks (1/4”
Square Bass) to fit the servo
cover plate to. This method
gives good support for the cover
plate and is an alternative to the
method shown on the plan.
Note: To set the block in the
thickness of the cover.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components 73
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 12
29) Glue a scrap piece of 1/8”
balsa sheet to the inner end of
the aileron.
Then using a piece of 1/16”
sheet to set the gap tape the
aileron in position on the wing.
Balsa Parts Scrap
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
30) Mark the position that the
tip of the aileron core needs to
be cut, using the wing as a
guide. At the same time mark
the aileron in line with the servo
output.
Balsa Parts 3,4,5&6
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
31) Cut off the excess core and
glue on the retained scrap
section of tip block.
Then mark the centre line on the
leading edge, also a line 2mm
forward of the joint with the
core, this will be your hinge
line.
Balsa Parts Scrap
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 13
32) Drill the hole to take a bolt
through horn. Make sure that
this hole is perpendicular to the
aileron cord line.
Now plane and sand the aileron
hinge to a “V” shape and sand
the rest smooth.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Nil
33) Ensure your servo Cover
Plate is a good fit.
Note: The one used here is made
from 1/8” Lite Ply
Balsa Parts Nil
Lite Ply Parts 1/8”
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Nil
34) Build up the Cover Plate to
accept your servo and ensure the
servo arm has free movement.
A tip: Drill the holes for the
mounting screws and screw in
the screws, once happy remove
the screws and toughen up the
holes using thin Cyno.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue As Req’d

Pegasus Models Phasar
By Algy Yates 14
35) Take the two tail plane
halves (#42), place them top
side down on a flat surface and
check that the roots are vertical
and fit well, sand as required.
Glue the two sides together with
5min Epoxy, ensuing the top of
the tail plane is flat by weighting
it down.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components 42
Recommended Glue 5 Min
Epoxy
36) Glue the Tail Leading Edge
(#44) and Hinge Strip (#43) onto
the horizontal stabiliser using
PVA and hold in place with
tape.
Balsa Parts 43&44
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
37) Cut out a section of the
elevator foam core (#45) to suit
a balsa block for the bolt
through horn, in a similar way to
the ailerons. Glue the blocks in
place with PVA.
Note. Or for a Ply insert (#50) if
using the Kit supplied Horns,
glued in with 5min Epoxy.
Balsa Parts Block
Lite Ply Parts Nil
Beach Ply Parts 50
Other Components 45
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 15
38) Glue the Elevator Hinge
Strip (#46) and Trailing Edge
(#47) into position and hold
using tape.
Once dry sand the elevators and
stabiliser strips to conform to
the upper and lower surfaces.
Balsa Parts 46&47
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
39) Cap the inner end of the
elevators with scrap 1/8th Balsa
sheet.
When dry sand to conform to
elevator surfaces.
Balsa Parts Scrap
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
40) Tape the elevators into
place on the Stabiliser and then
glue on the Tips (#49).
Again, once dry sand to conform
to surfaces, but leave the tape in
place along the hinge line.
Tip: Put some shiny packing
tape in the hinge join at the tip
so the elevator will not get glued
onto the Stabiliser.
Balsa Parts 3,4,5&6
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 16
Back to the Fuselage.
41) Cut two pieces of ¼”
Square Balsa (#3) to fit between
the fuselage sides just behind the
fuselage doublers, and glue into
position.
Balsa Parts 3
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
42) Glue into position the Tail
Plane Seats (#36).
When dry pull in the rear of the
fuselage temporarily and tape
together, this is to allow the
Seats to be shaped to allow the
Tail Unit to sit correctly and
incidences to be checked.
Balsa Parts 36
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
43) A basic check of the
Wing, Tail and Fire Wall
incidences can be checked
now, if you have an
incidence meter.
The tail incidence will also
be checked prior to final
fixing.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Nil
Wing, Tail and Engine Bulkhead should all read 0Deg.

Pegasus Models Phasar
By Algy Yates 17
44) At this point it is worth
setting up the rear end to take
your elevator servos. They need
to be staggered to fit.
Use Lit Ply for the servo screws
to screw into. Check that it all
fits together and adjust now as
necessary.
Balsa Parts Nil
Lite Ply Parts Scraps
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
45) If you have a fuselage jig
now is the time to get it.
If you don’t well you can use a
ply board like the one in the
photograph and draw a centre
line and fix rectangles of thin
ply, or very carefully build
without a jig at all.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue Nil
46) With the fuselage inverted
glue one of the truncated
triangular strip (#18) to the rear
of each longeron.
Note: The angle cut at the front
of each (#18) is to allow a
strong joint later.
Balsa Parts 18
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 18
47) Shown is the rudder servo
mount used, made up from 1/8th
Lite Ply and ¼” Square Balsa.
Balsa Parts ¼”Sqr
Lite Ply Parts 1/8th
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
48) Make a plate to fit into the
gap between the Wing Keys to
mount the receiver and its
battery on.
Then glue it and the rudder
servo mount in place.
Balsa Parts Nil
Lite Ply Parts 1/8th
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
49) Cut and fit the rear hatch
beam (#24) level with the rear of
the rudder servo mount.
Balsa Parts 24
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA

Pegasus Models Phasar
By Algy Yates 19
50) Fit the cross beams, made
from ¼” Square, at the mid-
fuselage point.
Ensure the fuselage is flexed
equally on each side. This is
where the jig really helps.
Balsa Parts 3
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
51) Ensure that both sides at the
tail end of the fuselage match
and glue together using PVA.
Then chamfer the triangular
section to accept the tail wheel
assembly mounting plate.
Note: This is if you are using the
SIG tail wheel assembly, refer to
normal instruction if you wish to
use the original set up.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA
52) Make up a tail wheel
assembly mounting plate from
3/32” ply and 1/8th x ¼” spruce.
See the assembly in the photo
next to the original brackets.
Balsa Parts 3,4,5&6
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue 5 Min
Epoxy

Pegasus Models Phasar
By Algy Yates 20
53) Cut a channel to accept the
tail wheel mounting plate and
glue the plate in position with
1Hr Epoxy (as it tends to be
less brittle).
Chamfer the sides to match the
triangular section.
Note: Run some thin Cyno into
the holes for the mounting
screws.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue 1Hr
Epoxy
54) Now using a long straight
edge calculate the position the
closed loop wires will exit the
fuselage.
Once marked drill (or burn holes
using wire) and fit plastic tubes
to act as fairleads.
Balsa Parts Nil
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Tube
Recommended Glue PVA
55) Sheet in rear fuselage using
Balsa Sheet (#25), cross grain,
up to the beam fitted at step 49.
Balsa Parts 25
Lite Ply Parts Nil
Beach Ply Parts Nil
Other Components Nil
Recommended Glue PVA