<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>Hi Keay</DIV>
<DIV>I'm no engineer, but I think it's all compression load going upwind due to the standing rigging, and maybe a little shear pushing aft if the mast is forward going downwind, but not enough to make the step dance around.<BR>The load of the halyard turning blocks (assuming they are anchored to the base plate like on the good ship Pariah) are also pulling the base plate aft, but the backstay and boom would push the mast step forward going upwind and counterbalance that</DIV>
<DIV>Also-through bolting would make a new head knocker down below, and may also interfere with where the top of the compression post sits.</DIV>
<DIV>All this from a guy who has never taken an engineering class, and last took anymath or physics in high school (but I have seen a lot of stuff break or not break on boats)</DIV>
<DIV>Mike Kennedy</DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Keay Edwards <keay@keay3.net><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> tuna@myfleet.org<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Mon, March 5, 2012 9:40:30 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [Santana 22] Thoughts about mast step.<BR></FONT><BR>Hola folks,<BR><BR>Major geek question. Any one have any cogent thoughts on the lateral forces applied to the mast step on the Santana 22? I am curious if the mast base plate needs to be through bolted to the underside of the support beam.<BR><BR>I heard somewhere that the force for every 1 lb applied to forward motion of the boat there are 4 lbs applied laterally. This is close hauled. <BR><BR>On further reflection the ratio of 1 to 4 might be for an unstayed mast.<BR><BR>Thanks,<BR><BR>Keay<BR>_______________________________________________<BR>Tuna mailing list<BR><A href="mailto:Tuna@myfleet.org"
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