Skyranger Nynja, Build Manual

Page: 88 / 278

88
Nynja Build Manual 1.4d
Figure 102 rudder horn fixing.
g) Next insert the horn into position and check the alignment of the rivet holes.
h) Ease the holes with a 4mm drill or reamer if necessary to ensure all rivets fit.
Check for excessive tightness or looseness of the securing bolts if
alignment is not easy.
If the holes are well out, it may be necessary to file away some material
from the central part of the horn, where it presses against the rudder
leading edge tube, to allow it to be positioned slightly further forwards.
i) Rivet the horn in position with 4mm diameter steel rivets.
Take care to ensure that the head of the rivet gun is flat in relation to
the horn. If your gun is too wide the fabric will prevent this and the rivets
will not seat correctly
– get a narrower gun if this is the case.
j)
Finally tighten the bolts, remembering to use a small dab of threadlock. Don’t
get it on the covering!
Figure 103 Nynja rudder (note: trim tab not required)