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Ned spent a fair amount of time fiddling with the problem. I suggest you contact him, or Explo exhibit services. The one additional thought I have, is that there are some rough service sealed refrigeration compressor cooling fan motors with replaceable fan blades that may fit your design specs.
C
Sent from Charlie's iPad
Berkeley, CA
Mobile 510-499-8086
Skypein: (510) 984-3543
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Exploratorium
3601 Lyon St.
San Francisco, CA 94123
On Nov 23, 2011, at 7:54 AM, Kim Hunter <[log in to unmask]> wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
>
>
>
> We have an exhibit that uses a 24 volt fan to blow sandblasting sand
> into dunes, channels, and other landforms. The fan is housed within the
> sandscape itself, and over time, the fan becomes gunked with the
> sandblasting sand (which is actually a fine-grained glass) and burns
> out. Does anyone know of a fan that would achieve the same results but
> not burn out, or does anyone know of a sand that behaves as nicely as
> the sandblasting sand but wont gunk up the fan?
>
> --Kim
>
>
>
> Kim Hunter
>
> Senior Director, Exhibit Development
>
> Orlando Science Center
>
> 407/514-2061
>
> [log in to unmask]
>
>
>
> Inspire Science Learning for Life
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
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