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Here's a bit of a review about commercially available VDG's:
http://www.waynesthisandthat.com/vandegraaff.htm

I just refurbished our (homebuilt) generator, and it's about the same size.
We get pretty good performance out of it, definitely a good size.  We can
get 5" sparks to the wand, and I have yet to see a demo we can't perform.
Any larger, and it's physically hard to move and accidental sparks get more
painful.

Anybody have any unique tricks or demos they like to share?

Earl
----
Earl Stirling
Swiss Army Knife
e x p l  O  r a t o r i u m
3601 Lyon St
San Francisco CA 94123
+1.415.353.0401


On Fri, Jun 5, 2009 at 1:55 PM, Robert Schmitt <[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.
>
> *****************************************************************************
>
> Hello everyone,
>
> We just purchases a large Van de Graaff from Sargent-Welch (
> http://sargentwelch.com/large-van-de-graaff-generator/p/IG0038102/) made
> by Science First. I've worked very little with Van de Graaff's in the past
> and I am uncertain as to how the performace of this model matches up with
> others. What are your thoughts on this model if you have used it before?
> Would we be better off returning it and seeking a different model? Any input
> would be very helpful!
>
> Thank you,
> Robert
>
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