http://www.geocities.com/z_design_studio/
heres a gearing calculator..makes it much easier <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='
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u can get 1-3mph more then gear wise from momentum..but it will go down after a while <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt='
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