Interesting.  We're still wondering/researching if to do CW and CCW on =20
opposing sides, or all one direction.  But situation duly noted.

We've started the quad-rotor project, which is simply dubbed "QuaRC" =20
for now cause no one has yet been creative enough to come up with an =20
acronym that would rhyme with "orange" (my requirement).

The website has been updated with some of this... =20
http://www.veisystems.com/nose/

In other news, we have video of the PnP in basic X-Y testing... =20
http://www.youtube.com/watch?v=3DWz9RjazuPbY

Cheers,
-Neil.



Quoting RussellMc <apptechnz@gmail.com>:

>> Since my time has been tight (to finish the software), the kids have
>> started project number two -- a UAV quad-copter.
>
> FYI - here's a comment from someone I know whose group built a Quad
> copter before they were all the rage. Left hand threads do have their
> place - as do wired nuts, tabbed lock washers and more. :
>
> "For xxx, we thought it prudent to cage the rotors, in case the motors
> overspeeded.  That was never an issue that I know about, though I
> wasn't very involved in the project (I think I would have heard about
> an overspeed cato, though).
>
> One thing that didn't occur to anyone was to get left handed threads
> for the Jesus nuts of the counter-rotating rotors.  Fortunately that
> flight test was tethered, and out on Nate's balcony.  When the nut
> departed and the rotor took flight, it bounced off the balcony ceiling
> before it did anything else.  That dumped most of its kinetic energy,
> and when it sailed out into the apartment complex courtyard, it didn't
> get far.  They found it a few minutes later down by the pool.  The
> vehicle just thumped back down onto the table when the rotor departed.
>  We suspected the software overspeed controller had kicked in on the
> departure motor, but with no telemetry, there was no way to be sure."
>
>
>           R
> --
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