On Sep 3, 2011, at 7:24 AM, Dominic Pflaum wrote: > Another idea may be to counteract gravity by filling the balloons with a > certain amount of helium.
They had a partial helium mix ... it's not as easy as I thought to make them neutrally buoyant and they only stay that way for about 2 hours. For various reasons, most of the documentation was shot *after* they had lost some lift ... -------- Dan Wilcox danomatika.com robotcowboy.com
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