Hangar 9 Hangar 9 P-51 Mustang ARF User manual

Keleo Creations Page 1 of 6
53875 NW Our Ln.
Gales Creek, Or. 97117
503-359-5318
Installation Manual
Hangar 9, 1.5 P-51
Tools required:
1. Dremel®tool with ½-inch sanding drum
2. Covering Iron
3. X-acto®knife
4. Paper for template, pencil
5. Drill with 7/32-inch bit
6. Permatex®Ultra Copper Silicone
Step 1
Mount the engine into the fuselage with the supplied header pipe installed on the engine making
sure that the engine prop thrust drive plate is extended beyond the front end of the fuselage by
1/8-inch. Now measure from the front of the fuse to the header pipe on both sides, retain the
measurements and be sure to use them later on their prospective sides. Now take a shroud and
position it on the fuselage ¼-inch up from the opening of the cowl and 2 3/8-
inches from the front of the
fuselage. Trace around the shroud as shown in the picture. Now take the shroud and install it back
onto the stacks and measure from the front of shroud to the stack inlet, this measurement plus the
2 3/8 should equal the number you previously got from measurement taken earlier above. If these
numbers are not equal then you need to make adjustments to the tracing on the fuselage so that the
numbers are equal. This step is important to get correct as it positions the stacks so that the header
pipe and the stack inlet line-up to each other.
You will need to follow this step carefully and
make sure everything is absolutely correct
before cutting the fuselage. Think this through
and understand what you are doing before you
cut! As they say measure twice and cut once.
If you use the supplied spinner you will notice
that it has a deep dish on its backside, in order
for you to make this work on this install you
will need to make a spacer that will make-up
the difference you need to get the correct
spacing for it.

Keleo Creations Page 2 of 6
53875 NW Our Ln.
Gales Creek, Or. 97117
503-359-5318
Step 2
Remove UltraCote® where stack will be placed.
With an X-acto® knife, carefully cut and remove
the UltraCote® by cutting the line you traced in
the previous step.
You may need to iron the UltraCote® in this area
first for better results.
Step 3
It is best to remove the engine for this step and
leave it out until instructed to bolt it back into the
fuselage.
After the UltraCote® is removed from the area
where the stack is to be installed, removed the
wood to make an opening into which the stack will
be installed.
Using a Dremel® tool with a ½-inch sanding
drum, carefully sand everything out within the
area of the UltraCote® cut-out. If you did this
properly, you will have a hole the shape of the
shroud with a plywood floor in the bottom.

Keleo Creations Page 3 of 6
53875 NW Our Ln.
Gales Creek, Or. 97117
503-359-5318
Step 4
Make the hole in the fuse for the inlet pipe on the
stacks.
To do this, lay the stacks with the shroud onto the
hole you just cut with the inlet pipe sticking up so
you ca
n see where to make your marks for the hole
in the engine compartment.
Make this hole with the Dremel® tool (it doesn’t
have to be perfect).
Step 5
When you are done with both sides as described in
all the previous steps, you should have two holes,
as shown and you should have cut out both
openings in the side of the fuselage for the stacks.
Now the opening for the exhaust stacks in the side
of the fuselage should be framed in where there
are unneeded openings. The opening should be
coated with epoxy for fuel proofing.
Silver paint can also be applied to the edge of the
openings for a better finish.

Keleo Creations Page 4 of 6
53875 NW Our Ln.
Gales Creek, Or. 97117
503-359-5318
Step 6
Make a template for drilling two holes (each side)
in the fuselage where the exhaust system will be
mounted. You need two templates.
1. One for the right side of the fuselage
using the right stacks, and,
2. One for the left side using the left
stacks.
Make a note on each to indicate FRONT for
proper positioning into the cut-out in the fuselage.
Remove the stacks from the shroud and trace
around the shroud. Fit the stacks back into the
shroud and position over the tracing using a square
to get it directly over the tracing.
With the stacks and shroud positioned exactly over
the trace, scribe around the stand-
offs to make two
circles on the trace.
Step 7
Make a dot exactly in the center of the two circles.
This will be where you drill when the template is
installed into the fuselage.
They will not interchange!
Cut around the outside perimeter of your trace and
place into the correct cut-out in the fuselage.

Keleo Creations Page 5 of 6
53875 NW Our Ln.
Gales Creek, Or. 97117
503-359-5318
Step 8
Position the template into the correct hole in the
fuselage (right template into the right side of the
fuselage; left template into the left side of the
fuselage). Note FRONT.
Position your drill bit over the dot in the center of
each hole. These holes hold the exhaust stacks in
place.
If needed, these holes can be enlarged later;
however, a washer will be needed on the bolt.
Bolt the stacks into their respective positions.
Please note that the stack should be placed into
the hole of the fuselage with the shroud, but the
shroud should not be screwed to the stacks
until
after they are inserted into the fuselage.
View from inside of the engine compartment when
you are done installing the stacks.

Keleo Creations Page 6 of 6
53875 NW Our Ln.
Gales Creek, Or. 97117
503-359-5318
Step 9
Reinstall the engine and slip the tubing over the
stack inlets.
Install the header pipe system to the stacks and
engine.
Your exhaust kit may come with aluminum flex
tubing, if this is the case then use Ultra Copper
Gasket Maker for the final assembly for sealing
the tubing to the header pipe and exhaust inlets,
this can be purchased at your local auto parts store.
Also for
glow engines you will notice two pressure
nipples, one is for fuel pressure and the other is for
draining the system of excess fuel when fueling.
Side view of the finished install.
Be sure to do regular maintenance checks on your
exhaust system, this is a must for trouble free
flying.
You may have a different engine that what is
shown here, but everything is basically the same
from engine to engine.
I hope my instructions were clear and helpful and
you have lots of fun with this product.
Happy flying.