I'm building a Hobby Club Danny 3 m RES sailplane, which is one of the pod
and boom style of fuses, a la the Bubble Dancer, Topaz, Ava, etc, etc. I'm
debating whether to install the rudder/elevator pushrods inside or outside
of the boom. The pushrods I have are .070 carbon fiber from CST. I've done
some research and it seems that either method is used to good effect. The
only other pod/boom airplane I've assembled is an XP-4 DLG and I did put
the pushrods on the outside as suggested by the instructions. Of course an
XP-4 boom has a LOT smaller diameter than a Danny boom.
It seems that putting the pushrods on the outside will be:
- easier to build
- easier to support the pushrod all along the run
- straighter run
- ugly, ugly, ugly
- the preferred method of Dr. Drela
Pushrods on the outside
- cleaner aerodynamically
- aesthetically more pleasing
I've heard of a CA/cotton ball method of supporting the pushrods in the
boom, which sounds a little crazy, but easy if it works.
Anyway, I'd appreciate any advice...
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