All the blocks are through bolted with backups. Steve DeLange
-----Original Message----- From: "Sneddon, Keith" <[EMAIL PROTECTED]> Subj: RE: catalina27-talk: Traveler sheeting Date: Thu Sep 13, 2007 1:06 pm Size: 13K To: <[email protected]> Very wrong. The tension in the line is the tension in the line everywhere. The Harken Web site has some good data on block loads vs. line turning angles. The load on that block is almost 3/4 that on the traveler to boom blocks. Your line should be the weak link, and if that block isnt through bolted with backup plates, it is a potential disaster. http://www.harken.com/charts/blockloadvangle.php Keith Sneddon Chief Engineer (Normally I delete this stuff). Mechanized Systems Defense Systems Ph: 631-630-4092 Fax: 631-630-4244 Cell: 516-313-7420 e-mail:[EMAIL PROTECTED] From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, September 13, 2007 1:52 PM To: [email protected] Subject: Re: catalina27-talk: Traveler sheeting I'm no engineer, but I would think it is. Its only purpose is as a turning block. It doesn't have the same pressures as the ones between the boom and traveler. I had the original curved track traveler so I re-aligned my mainsheet control to the traveler car. Now that I have the straight track travaler (Garhauer; fantastic!), I don't need to keep it there but I still do. You should seriously consider adding a boom vang. The midboom doesn't hold the boom down quite as good as the end-boom. Your sail shape will be much better with a vang. Bob -------------- Original message -------------- From: "Joe McCary" <[EMAIL PROTECTED]> As they say a picture is worth a million words (hey I am a photographer so I tend to inflate the value of a photo a bit). The image I am referring to is: http://www.delanges.com/Catalina_27/images/Traveler_2.JPG Its from Steveâs website and shows his mid boom traveler. My rig will be slightly different, with double ended sheeting. The folks at Catalina Direct suggested I run the sheet from the edge of the cabin top (near the handrail) forward to a spinnaker block on a spring then at a 45° to the first blocks on the boom and so on. In the image above, while just single sided, he runs his sheet to the mast then down through a turning block then to a deck organizer then to the cleet. My question to Steve was, it appears the block closest to the mast is held in position by a small stainless strap with just 2 sheet metal screws instead of a full through bolted bail on the boom, is this strong enough? Joe McCary Aeolus II West River, MD [EMAIL PROTECTED]  From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, September 13, 2007 12:28 PM To: [email protected] Subject: RE: catalina27-talk: Cruiseair on C27-alternative method Joe, you should have a boom vang running at 45* from the boom to near mast base. Running the mainsheet across this same area then makes sense, plus eliminating one block from the whole setup. I think you can see what I mean from pictures on my out-of-date website: mywebpages.comcast.net/sailrmann Bob Mann Windcatcher '85 #5928
