ChopperAddict's Hints & Tips

   

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      SAFETY  - Take care with Interceptor 400 Flybar paddles
  
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.

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