These indoor kite posts once appeared in the site blog page - that's the
one you enter via the 'what's new!' site navigation link. The latest posts come first. Just scroll
down and stop at any heading that appeals :-)
MBK Indoor A-Frame Kite
A-Frame In Frame
With the Indoor A-Frame instructions completed and decoration applied, the kite was ready for it's in-flight camera shoot...
MBK Indoor A-Frame
First of all, there was a problem to sort out. Somehow I managed to end
up with considerably less dihedral in the horizontal spar than the
previous prototype. Would it fly OK with just 20 degrees instead of 30?
It only took a couple of short tows around the living-room to answer
that question. Ooops - the kite flew with an excessive amount of
tail-swishing. That just would not do.
It was a delicate operation,
but after a few minutes I managed to increase the dihedral. The spar was
loosened from the sail in the middle and some snips made with the
scissors. Then tape was re-applied to hold in the correct amount of
dihedral. A short tow up then resulted in steady flight up near the
ceiling. Whew! No time was wasted getting out to the veranda to take
photos of the a-frame in flight.
Successfully photographing a small
indoor kite in-flight on just a meter (3 feet) of thread takes a number
of attempts. Particularly under an open veranda which is not a
completely still-air environment! Motion-blur and the kite in caught in
unusual attitudes eliminate many of the shots from consideration.
Back in the house, a little more flying was done to confirm that all was well with the design. No problems!
On this site, there's more kite-making info than you can poke a stick at :-) Want to know the most convenient way of using it all?
The Big MBK E-book Bundle is a collection of downloads — printable PDF files which provide step-by-step instructions for many kites large and small.
Every kite in every MBK series.
A-Frame #2 Does Well
Whoever coined the saying KISS (Keep It Simple Stupid) could have been talking about kite-making, for sure...
The second prototype of the ... simple ... Indoor A-Frame kite passed all the tests with (ahem) flying colors! On it's first foray around the house, the small light-weight kite floated up steadily. Weaving slightly at times but certainly not 'wagging the tail' like the first prototype.
With a little more walking speed the thread rose to about 50 degrees - and would have clearly stayed there if there had been more room to walk around. Great! What a relief. I'm still getting over that fan-kite experience ;-)
Using the ticking living-room clock as a timer, the a-frame kite was able to stay in the air for almost 10 seconds over the standard course. 9 seconds would have been enough.
Flying over a circular path was not quite as straightforward as with the superbly stable delta and canard. But the a-frame managed to stay up for several circuits, albeit with some swishing around on 1 meter (3 feet) of thread.
Finally, and quite importantly, came the speed test. It took a few tries to pop the gust reading of the wind meter over 6kph, as I held it in my towing hand. But there it was - 6.7kph and not a scratch on the kite. OK, more accurately, no bent or over-stressed paper spars :-)
So it's on with the free online instructions now. And there's just one more Indoor Series design to go before I make a start on the e-book Making Indoor Kites.
... And it didn't take long either, this design being such a straightforward build.
The first few test flights around the house were promising. Very promising, since the Indoor A-Frame looks like being one of the slowest fliers of the lot. However, this first effort had a small shortcoming...
Whereas the fan kite flew like a dog, the a-frame wagged it's tail like one ;-) But all was not lost - a fair dose of extra dihedral should help greatly. Also, by re-designing all the spars it should be possible to concentrate the weight a bit closer to the center. It all helps.
These small indoor kites can be quite sensitive to the exact position of the towing point.
At first the a-frame seemed unwilling to climb near the middle of it's speed range. So the towing point was shifted back 1.5cm, which meant shifting the horizontal spar back as well. That proved to be too much, causing the nose to rear up suddenly and the main spars to bend. Too draggy! Then, without touching the spar again, a shift of just 0.5cm forward had the kite soaring around more comfortably. However, there were not many chances to go high since the directional stability was inadequate. That wagging tail!
Another build will be underway shortly, with the sail dimensions altered to match the new horizontal spar position. Also all the spar dimensions will be tweaked to add strength and reduce weight in all the right places. I'm hoping for a stronger and more stable kite next time...
The story or stories above document actual flying experiences.
My write-ups are definitely warts-and-all since things don't always go totally as planned. However, half the fun of kiting is anticipating the perfect flight. When it happens, it's magic!
As mentioned earlier, there's more kite-making info here than you can poke a stick at :-)
Want to know the most convenient way of using it all?
The Big MBK E-book Bundle is a collection of downloads —printable PDF files which provide step-by-step instructions for many kites large and small.
Every kite in every MBK series.