Model Forum / Radio Controlled / Helicopters / May 2007

Bill,

There's no advantage one way or the other.  The rotor will fly just as well
with the flybar above as it will with the flybar below.  The reason for
there being different designs is the same for there being different brands
of cars on the road.  It's just someone else's idea of how to make things
work.

Push come to shove, many of us can give you all kinds of reasons why one
design "might" be preferable to the other under a given set of circumstances
but 98% of that will simply be personal opinion and none of it will make any
difference to you as a newbie!

Generally speaking, most folks tend to recommend you buy whatever happens to
be the most popular in your area.  That way, the folks most likely to help
you are also familiar with your machine.  Beyond that, just get what you
want and don't worry about it.  Also, don't be afraid to ask questions.  You
won't be asking anything that hasn't been asked before, like the question
you just asked!  ;-)

Good luck,
Steve R.

There are none.

There must be a reason for

Looks and possibly manufacturing ease. That's it.

Is one system more stable than the

No, so neither:-)

In most cases a fly bar below the Main Rotor Blades places them at a greater
distance from any part of the helicopter. This reduces the chance of the
blades striking the helicopter in a hard landing or extreme 3D move. Flight
performance will be the same.

Bill Kehm schrieb:

Hi,
If you have a moving-flybar-system you don´t need the pitch compensator
any more. The response is more direct and possibly a greater pitch range
 can be achieved. (see Henseleit helicopters for more) In this case the
flybar is below the main rotor.

Tom