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tip applies only to the Interceptor 400 !!!
am very often asked by people on the HeliGuy Int400 Forum about what
upgrades are needed with a brand new Interceptor 400 purchased as a kit or
part assembled kit.
know you may be asking why do you need to do anything, but the facts are
that the kits have not caught up with knowledge learned from building a
great many of these fine helicopters.
are the few things you REALLY SHOULD DO to avoid problems later on...
- Stopping the unwanted and dangerous tail gearbox rotation.
two of the longer 21 mm screws, plus 2mm nuts to go with them, and use
these to fit the tail gear box assembly to the boom. The original
bolts are about 18mm, and only just go through the plastic of the other
side, which means the tail gearbox is not fitted tightly enough and
will, quite quickly, shear off the small plastic locating lug, leaving
the tail gearbox to rotate on the boom quite easily. Use the
longer nuts and then put nuts on the other side and tighten
- Avoid a common problem where one of the tail blades can easily fly off
longer bolts to replace the bolts that hold the tail blades onto the
tail blade grips, and again, nuts to go with them. These should
NOT be tightened up fully, but should allow the tail blade to drop under
its own weight, so when the bolt is tightened up enough to allow that,
add a nut and use THREAD LOCK ON IT. This modification will avoid
a common problem where one of the tail blades can easily fly off, which
is dangerous to anyone around (you included) and will cause a crash.
- Lipo type and positioning
lot of people assume that the lipo battery should lie down on its widest
side on the battery tray. THAT IS WRONG. The INT400 has the lipo
standing up on its thinner side, so that it butts up against the cross
member in front of the motor. The best way to secure it is to use Velcro
on the battery tray and lipo. The best battery to use that fit the tray
are 11.1V, 2200 Mah 25C but they MUST be no longer than 103 mm or
the canopy will not fit
hope that this information will ensure that your new Interceptor 400
will go together and fly well and safely