Drunk with power...er beer.
Join Date: May 2010
Location: Vancouver, BC, Canada
Mentioned: 8 Post(s)
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If you draw a line from your center of mass - which is usually just behind the belly button -- through the center of the board, that'll give you the vector at which the board is pushing against the Earth. Assuming you're balanced of course. If you just lean over while standing still, you'll just fall over. The amount of lean should just balance the "centrifugal force" so that you stay on your board through the turn. Angling the board is an additional complication. It doesn't affect center of mass or the angle of the vector, but it does affect whether or not your board is able to hold you in the turn. Put the board too flat and you'll slide out.
Of course there are things you can do to affect your center of mass. For instance, sticking your arms out in front of you will shift your center of mass forward, requiring more lean. Squatting will shift your center of mass back.
Coffee is your friend. Everyone else is an acquaintance.