David VanHorn wrote:
>
> >
> >The original motor (the blue one, which is now disconnected) didn't make a
> >single noise, and the wings deal with most of the wind noise, but the gears
> >on the larger motor do tend to make an annoying fuzz. Maybe I should try and
> >get better gears, made of metal.
>
> Belt drive would be the quietest option.
> Plastic gears, like nylon, are rather quiet.
> Metal gears can be quiet, but only if very well ($$) made.


A decent sized DC motor, say 3" x 5" will
spin that up. Direct drive, no need for gears.
If you get a 24v servomotor from a scrapyard
it should even have an encoder attached for
speed control, or data sync.


> >Of course I considered a disk, but I don't think the 1/8" axis and its 1/2"
> >ball bearings would have lasted long with the added weight.

I think it is more innovative without the
disc. It is transparent so the light seems to
some from thin air. JMHO :o)
-Roman

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