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As we've said many times, if the wind is too
light to kite, do a forward launch. But experienced launchers like the
occasional challenge and this no exception. The details of the launch are
covered in Chapter 15 although no mention was made of the motor assist
technique. That wasn't perfected at publish time. Without the motor assist
technique, this is much, much easier to do on a clutched unit since the prop
doesn't spin and with an easy-to-inflate wing. After all, it takes x mph of
airflow to get the wing to come up and, without wind, you've got to generate
it all regardless of technique. This method simply reduces the airflow
requirement a bit since you get to stay on the A's all the way through the
process.
At some point in the past I was told that doing a reverse launch in zero
wind was impossible. Poppycock! I'd done it before. All I needed now was
proof.
The first time doing it for the camera was at Fly By Ranch with John Good
recording. But, before I could launch, the slightest breeze came up. Even
though though I made it and the 1/2 mph wind was directly accross, the
camera angle didn't make that clear. It was not proof positive.
Several months later another opportunaty arose. In Jim Jackson's back
yard there was no wind whatsoever. Wayne Mitchler and I set it up with smoke
in a location where you could clearly see what the smoke was doing as I
passed perpendicular the camera. Using Wayn'e easy-to-inflate Vitamin, it
worked as advertised.
When we set it up there was absolutely nothing moving and the smoke was
going straight up. Just before I strapped on the motor it leaned over. That
was good and bad. It was oozing mostly across but was slightly tailwind.
That would make the launch much harder but would also provide
incontrovertible evidence. You'd be able to see the smoke as I went past
perpendicular to the camera.
Thankfully, the launch worked. Click on the video to see. |
Tailwind
Launch
 YouTube
video of the
cross-armed method mentioned in Chapter 15 (advanced ground handling).
It's
is a great way to handle light or no wind reverse inflations. As always it's much better to do a forward launch in such conditions,
but this technique can be handy if you're hooked in and the wind changes.
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