T-27 Tucano 20cc 1.2 2022
16
Engine cowling installation
The engine cowling is supplied in 2 parts (upper and lower). The parts fit perfectly with each other and on the
fuselage, providing correct alignment according to the center between the mounting holes of the engine
mounts and the angles of the firewall, for both gasoline/glow engines and electric motors. Using the spinner
rear plate (2 ½”)
positioned on the engine prop washer, position the lower part of the engine cowling to center
the spinner rear plate with the circumference formed by the cowling, leaving a space of 1 to 2 mm between the
rear plate of the spinner and the cowling so that they do not touch in any position.
To fix the cowling to the fuselage, apply epoxy glue to 4 10mm hard wood cubes and glue them to the inside
of the fuselage, in order to make a solid fixing point where the fixing screws will be inserted. Do the same for
the attachment points on the underside of the cowling or use screws with self-locking nuts to ensure
attachment even with high levels of vibration. With the correct alignment of the set, definitively screw the
cowling parts together and in the fuselage using washers to increase the contact area with the cowling parts,
avoiding cracks due to vibration. The screws to be inserted in the wooden cubes must be locked with a drop of
medium CA glue or epoxy glue to reinforce the locking and guarantee greater strength.
The horizontal and vertical alignment of the spinner rear plate and the front of the cowling must be equal,
parallel and centered.
Above: up (left) and down (right) engine cowling installation in correct alignment.
