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Composite-ARF Extra 330L (2.6m span)
may need a little bending of the headers.
All new kits shipped from mid-2004 will have this CNC
milled plywood bulkhead and silicone bumpers included in
the kit. Alternatively you can download a full-size template
of it from our website.
The bulkhead should be fitted about 110mm (4.25") behind
the back of the fibreglass sleeves for the main landing gear,
glued in with slow epoxy and milled-fibre, and reinforced
with glassfibre tape.
Important Note: If using internal tuned-pipes or mini-pipes,
C-ARF recommend that you keep the headers at least
6mm (1/4") away from the fibreglass sleeves for the main
undercarriage legs, and 10mm (3/8") away from the mould-
ed cockpit floor to prevent any heat damage.
Cooling Slots: Whichever exhaust system you choose,
don't forget to cut out the 2 slots in the bottom of the fuse-
lage to let the warm air from the exhaust system escape
from the fuselage. These slots should be about 35mm
(1.5") wide and 125mm (5") long, and it is best if you make
nice rounded corners to reduce any chance of tearing in the
composite skin. For the mini-pipe installation the front of
these slots should start about 25mm in front of the back end
of the mini-pipes, as shown. When cutting the slots leave
about 30mm (1.25") between the slots so that you don't cut
through the jointing tape used in manufacture.
Please call your Composite-ARF Rep. or email us at:
techsupport@composite-arf.com, if you need any addition-
al help with the motor and mini-pipe installation.
techsupport@composite-arf.com
(above) A view of the plywood
bulkhead and silicone supports for
the MTW #DT75K mini-pipes.
(below) Completed DA-100 and
mini-pipe installation, with the igni-
tion unit on a foam rubber pad,
secured onto the motor dome
with 3 small cable ties.
(above) A view of the cooling slots
for the MTW mini-pipes, and the
cut-outs for the exhaust outlets.
(left) A general view of the com-
pleted DA-100 and mini-pipe
installation.
(Shulman 2000 scheme)
27
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