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Take care with Interceptor 400
I have just finished built several Interceptor 400 kits up for
other pilots, but I still got caught out by this little problem.
For some unfathomable reason, the flybar
paddles on this helicopter do NOT screw on to the end of the
flybar at all. They are fixed by the single grub screw
that is usually a fail safe on most other fly bars
Equally there is no flat on the flybar itself
for this to key to, so unless you make very sure that is
tightened down and thread locked really securely, these paddles
can fly off on spool up.
That is exactly what happened to me on one of
the aircrafts maiden flights. It had just about reached the
point of lift off when there was a very loud bang, luckily from
the OTHER side of my garden, and the heli of course vibrated all
over the place. Luckily the good old DX6i Throttle Hold
switch worked as advertised and killed the motor instantly,
avoiding any other damage occurring.
I didn't even notice what had happened on the
helicopter, it was only when I walked across the garden that I
realised what had happened.
MORAL here - use a small file to grind a small
flat on each end of the flybar, and make sure your grub screw is
using it when you tighten it down finally. You may find
that you need to make this more of a groove so that you are able
to adjust the pitch of the paddles when setting it all up.