Skyranger Nynja, Руководство по сборке

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136
Nynja Build Manual 1.4d
manual version recommended insertion of tip battens before the wing fabric is fitted
to the frame, as insertion of the batten after fitting and tensioning can lead to
significant tension and friction in the batten pocket and possibility of bursting the
pocket.
However using this method care must be taken to avoid knocking the leading edge
against the batten in its pocket during frame insertion
– which can then damage the
batten pocket.
An alternative is to reduce the camber of the batten before fitting. It can then be fitted
at the same time as the other upper surface battens.
Batten shape can be adjusted by gripping the batten firmly at each end whilst holding
it upside down, then whilst kneeling, draw the batten across the extended knee whilst
applying downwards pressure. Repeat whilst applying increasing pressure as
required to flatten the camber
.
Fig 163 normal and flattened battens
The above picture shows camber reduced for the tip batten compared to its starting
shape. Camber has been reduced along its length. The forward section is hardest to
flatten and may need considerable pressure.
Using a straight edge as shown below a guide for max depth of camber you are
aiming for is 100mm from top of straight edge and middle of batten
Due to the tip batten having less camber than the
others it causes the overall length to increase. This
means it sticks just out of the end of the pocket. A
cosmetic enhancement can be made by cutting the
batten at the rear end by 10mm. Carefully cut
around the circumference so as to cut the tube and
not destroy the plastic batten end. Remove the end
piece with the plastic end then cut across the
Figure 164
– measuring depth of peak camber
remaining metal ‘collar’ to release the plastic end. Clean up the end of the batten with
a file and re insert the plastic end. Align it to match the tip insert (90 degrees to
camber) and fix in place by centre punching the side of the tube.