Flylight Nynja Build, Руководство пользователя

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b) avoid friction between two moving metal parts, such as the stick and its
supporting bracket
c) avoid contact between parts of different materials, especially stainless-steel
and aluminium
The final point above is primarily to prevent the hard steel wearing through the soft
aluminium due to vibration, rather than for electrolytic reasons, as the bolt passing
through both materials will still complete the electrical connection.
Saddle washers
Normally they are shown on the drawings and photos.
Generally they are used between two crossed tubes or between a tube and a flat
bracket.
Take care not to overtighten bolts which pass through plastic saddle washers as you
may cause them to split.
Bolts
Important: all bolts should bear on their unthreaded lengths, not on the threaded
portions.
It is also important that nuts are not screwed on so far as to become „threadbound‟ by
reaching the limit of the threaded portion. You can use an extra washer or two to
adjust the effective length and prevent this where required.
Turn nuts, not bolts whenever possible, when tightening, as this may damage the
plating and encourage corrosion. Washers are only needed under nuts to allow them
to be turned, whereas bolt heads should not be turned.
Do not over-tighten bolts, avoid deformation of tubes or brackets.
IMPORTANT: tubes must not be visibly deformed.
Figure 10 Left - WRONG
– squashed tube, thread in tube. Right – RIGHT – tube still round,
thread stops in washer(s).
Figure 10 bolt tightening.
Every wing nut has to be fastened by a security ring
or aviation „nappy pin‟.
Nyloc nuts should be used only once.
When cutting bolts short, a minimum of two threads should protrude from the nut.