Model Forum / Radio Controlled / Air Models / August 2004

Hiya Reg,

I'm currenctly building a Hog Bipe (we'll about to start again as
nights are drawing in) and have done the fus and the top of the top
wing. I'm about to start doing the underside. This, according to the
instructions  is what gives the wing it's anti-twist. So if you want a
stronger wing go for it. Doing the top was easy because I could glue
with ca from the underside. Not sure yet how I'm going to fix the
bottom, may be a mix of white glue and pin it back and front with
ca. How will  you do yours?

Yep know what you mean about the wet. Might have to fit floats if it
keeps on.  The grass is so heavey and wet getting airbourne is a
real challenge!

Mind you don't slip on those wet slopes.

Nick

Howdy Reg,

I’m relatively new to this forum game  but I’ve read one or two of your
postings over the last few weeks and I’ve come to the conclusion that you’re
a man after my own heart. – I could be wrong mind you!  Flown most types of
models but if forced to choose just one, the fan at the front would have to
go and we’d settle for the slopes. Right?

Now my two pen’orth about whether to full ‘D’ or not to full ‘D’ - - Most of
Ben Buckle’s models go back to the pre-radio days or at least to when single
channel was King.  (rudder only - operated by an escarpment) – These models
had, for all intense and purposes, only one flying speed.

When multi-channel came on the scene and we had the luxury of rudder and
elevator, wings started to ‘Clap Hands’.  This was overcome by substituting
that flimsy top main-spar for a top and bottom spar with a connecting balsa
web. – Then another phenomena raised its head  ‘The Tuck Under’  It was
found that when some models got a fair head of speed, as in a shallow dive,
the dive would start to steepen up and the elevator would not be powerful
enough to pull the model out of the dive. It took a while for some of us to
realise that this was caused by the wings twisting at the tips – In came the
‘Full D’box section

So Reg, my advice for what’s it worth when building one of these open
structured wings, is, - go for the full D section – plus a touch of carbon;
resin; foam and anything else you can get away with –

There is of course two alternatives if you want to stick to with the
original design::

1) Don’t plug the elevator servo because I know you can’t resist those
high-speed low passes. -  2) Buy a bike and have a bash at free flying – a
lot cheaper on radio gear  but it plays hell with the lungs .

Good Luck with it –

Ivan

.....

Reg