Firewall Setup - Pipistrel Sinus Build Manual

Firewall setup

The fuselage comes already marked with hole locations and diameters. It is recommended, that
you drill the holes on an as-per basis, and not all at once. Futhermore, check the cabin heating
valve position to ensure that it doesn't interfere with the electrical panel, that mounts on the aft
side of the firewall. Lastly, be sure to mount encapsulated nutserts into the firewall to hold items
like the electrical assembly in place. NOTE: Additional diagrams with all necessary hole
dimensions can be found in Appendix 8, 9 and 10.
The oil tank bracket is rotated clockwise, as viewed from the cockpit, a few degrees. It's
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to be mounted with four M5x16 hex bolts
The lower left electrical panel mounting cap screw is intended to protrude through the
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firewall and to be used as a hose clamp mount for the fuel return line. Therefore, the cap
screw for that location is longer (M5 x 24) than the other three mounting screws (M5 x
16).
The bottom hole for the engine mount should be approximately 42mm from the bottom
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surface of the fuselage. You can use this hole as a reference and then use the mount to
find the other hole locations.
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