Re: [Cal_Boats] Cal 28 flushdeck Displacement 6,000 v. Actual 8099 lbs

Not on the same scale (get it?), but I have weighed my hobie cat with bathroom scales by putting a 2x4 under the opposite hull while weighing the other, to minimize weight transfer, then swapped sides and added the two values. I came within a pound or two of the system they had at the regatta. I made sure I was on a flat hard surface. John Courter Strider From: Chris Campbell <cl… [at] charterinternet.com> To: Ca… [at] yahoogroups.com Sent: Thursday, February 1, 2007 9:26:20 AM Subject: Re: [Cal_Boats] Cal 28 flushdeck Displacement 6,000 v. Actual 8099 lbs Elwers, George A. wrote: If you put the trailer tire on the board 1/5 of the way between the angle and the 2x2 on the scale, Does it matter that the tire is not really a point load, but kinda smushes out on the board? Is the 1/5 point measured to center of tire footprint? And some bathroom scales get inaccurate (under-read) when they're on a compressible surface like a carpet. Does thawed, slightly muddy ground have a similar effect? At first this sounded hopelessly engineer-geeky but once I figured out that it involved a simple fulcrum it made more sense. Sounds like it's worth trying. Maybe I should try it while the ground is frozen, except that somebody might figure that anybody out under a boat trailer in this weather is nuts or criminal or both, and call the cops. "Really, officer, this is an engineering project." Chris Campbell Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com