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RE: Life of Birds (vertical running)
"Steepness" may not have been the primary problem. I would guess that
traction would be the most challenging aspect of negotiating a dune, and the
aerodyanamic properties of the forelimb (when beated against the air) may
have helped in this respect. I can recall from my childhood days the
difficulty of trying to run up sand dunes at the beach without sinking into
It also depends on which side of the sand dune your going up. The 'back'
side is a lot 'looser' then the front side, or it can also have a much
Been there, done that, played and drove on it, both on my ATC and 4 X 4.
Tracy L. Ford
P. O. Box 1171
Poway Ca 92074