That is correct for one sphere, but a bunch of spheres piled on eachother will allow room for even less resin. At any rate your CG will be lower with lead shot than steel shot. I wonder if it would be better to put the resin in first and let the lead shot sink into it? Brian M15 #421 ----- Original Message ---- From: htmills@bright.net To: For and about Montgomery Sailboats <montgomery_boats@mailman.xmission.com> Sent: Friday, February 10, 2006 4:17:54 PM Subject: RE: M_Boats: Re: Epoxy pricing & sources Out of curiosity, I compared the volume of a sphere to that of a cube (that circumscribes the sphere) and the difference is even greater than I expected. The sphere fills up just over half of the cube (52%). Of course, those interstices would be filled w/ resin, but since the density of resin is so much less than lead.... Tod M17 #408 BuscaBrisas <=== sporting factory-installed lead ballast, thankfully. -----Original Message----- From: montgomery_boats-bounces+htmills=bright.net@mailman.xmission.com [mailto:montgomery_boats-bounces+htmills=bright.net@mailman.xmission.com] On Behalf Of Brian Gilbert Sent: Friday, February 10, 2006 2:43 PM To: montgomery_boats@mailman.xmission.com Subject: M_Boats: Re: Epoxy pricing & sources I hope I don't offend.... I know this is semi-commercial, but I've used these guys several times, they do a great job. Have you ever heard of Raka? The sell a 1 1/2 gallon epoxy kit for $87. It's a tiny company, but the folks there are very helpful and friendly, they ship quick, and it's a good product- certainly as good as West. The resin is a very low-blush formula. But be warned, it does get really hot if mixed in quantity, like more than three "pumps" worth... ALWAYS BUY THE PUMPS! www.raka.com I've no connection with them, just passing along info. Oh, and installing lead... you might get a slightly lower CG if you had some solid blocks or fist-sized chunks of lead that could be bedded in a mix of shot and epoxy. But then again, I'm only an armchair ballast-installer Best BG -- Brian Gilbert Marine Media Author, Fix It and Sail (423)876-1016 3404 Hartford Drive Chattanooga, TN 37415 www.sailingsmall.com on 2/10/06 11:33 AM, montgomery_boats-request@mailman.xmission.com at montgomery_boats-request@mailman.xmission.com wrote:
Epxoy runs close to $115/gallon. Polyester is only $23. I will build a "dam" along the bottom edge of the holes in the keel that will be above the level that I am going to install the lead.
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