Giles: Ok here is an engineer's approach. The cabin on an M-17 has an estimated air vol of 170 cubic ft (12.75 lbs of air), of which 21% is oxygen (2.6#), and the balance is nitrogen. If we add two lbs of dry ice (CO2) which melts into a heavier gas, the CO2 displaces 16 cubic ft of air out the hatch and settles to the bottom. If we run a small fan and mix the remaining three gases (2.4# of O2, 9.1#of N2, 2.0# of CO2) we get an oxygen content of 17.8% which is too low for human consumption. All of this is theoretical and doesnt consider the fact that the CO2 is released over a long period of time and some will be swept away by air blowing into the cabin. Still, I'd be carefull and might add some ventilation. At the plant where I worked, the operators oveheated a rotating feeder and jammed it. The maintenance manager had a great idea, cool it down by packing the cavity with dry ice. He sent two mechanics into town in the company station waggon to pick up 100# of dry ice. As they were returning to the mill, it started to rain and they ROLLED UP THE WINDOWS. They had splitting headackes and we had to send them to first aid, then home. We were lucky the drive was short. Something to think about. Fair winds Don -----Original Message----- From: montgomery_boats-request@mailman.xmission.com [mailto:montgomery_boats-request@mailman.xmission.com] Sent: Thursday, November 06, 2003 6:49 PM To: montgomery_boats@mailman.xmission.com Subject: montgomery_boats Digest, Vol 9, Issue 18 Send montgomery_boats mailing list submissions to montgomery_boats@mailman.xmission.com To subscribe or unsubscribe via the World Wide Web, visit http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats or, via email, send a message with subject or body 'help' to montgomery_boats-request@mailman.xmission.com You can reach the person managing the list at montgomery_boats-owner@mailman.xmission.com When replying, please edit your Subject line so it is more specific than "Re: Contents of montgomery_boats digest..." Today's Topics: 1. Dry Ice for a small freezer (Ludlow, Don) 2. Re: New Old M-17 (Bill Sylvester) 3. RE: Dry Ice for a small freezer (Morris, Giles) 4. Re: 14.1 volts charging (bownez@juno.com) 5. Re: Re: New Old M-17 (Larry Yake) 6. Re: Re: New Old M-17 (Bill Sylvester) ---------------------------------------------------------------------- Message: 1 Date: Thu, 6 Nov 2003 15:44:47 -0600 From: "Ludlow, Don" <LudlowD@BEK.com> Subject: M_Boats: Dry Ice for a small freezer To: "'montgomery_boats@mailman.xmission.com'" <montgomery_boats@mailman.xmission.com> Message-ID: <6BA6B6935520D31195940000C91B62C5020DE71D@mobnt1.bek.com> Content-Type: text/plain; charset="iso-8859-1" Re: Dry Ice - I don't know about the impact of dry ice on the FRP hull but I would assume that enough insulation would solve the problem. A word of caution though, dry ice is frozen carbon dioxide (that horrible greenhouse gas only released by US industry which is destroying the planet)As the dry ice melts (sublimes) it turns into CO2 gas and fills the interior of the boat, displacing oxygen. This can kill you. Re: mast rail - I saw a picture of a Potter 14 with a handrail around the mast. Looks cool and probably wouldn't get in the way of rigging the mast. You would have to route the jib sheets in a way that they would not hang-up on the handrail. Re: Floatation rings - pool noodles sound great. I use them for bumpers, cut in 2 ft lengths with a line through the hole (plastic washers hold the line) red matches my stripe. I'll check Walmart for the big ones. Re: Lift of my M-15. Doug, thanks for the response. I may try the bow and mid cleats for a trial lift but with the mast up, I'm thinking that special lift eyes may be the answer. I agree that straps would wedge between the hull and trailer bunks but would use them if I went under the boat while she was lifted. Fair winds - Don Ludlow -----Original Message----- From: montgomery_boats-request@mailman.xmission.com [mailto:montgomery_boats-request@mailman.xmission.com] Sent: Thursday, November 06, 2003 3:26 PM To: montgomery_boats@mailman.xmission.com Subject: montgomery_boats Digest, Vol 9, Issue 17 Send montgomery_boats mailing list submissions to montgomery_boats@mailman.xmission.com To subscribe or unsubscribe via the World Wide Web, visit http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats or, via email, send a message with subject or body 'help' to montgomery_boats-request@mailman.xmission.com You can reach the person managing the list at montgomery_boats-owner@mailman.xmission.com When replying, please edit your Subject line so it is more specific than "Re: Contents of montgomery_boats digest..." Today's Topics: 1. mast hand rail (MC Carpenter) 2. fiberglass and dry ice (MC Carpenter) 3. floatation ring (MC Carpenter) 4. Re: floatation ring (Howard Audsley) 5. Re: floatation ring (Rachel) 6. RE: gel battery (Smith, Tom) 7. Re: floatation ring (The Tentmakers) 8. Re: floatation ring (Mark Escovedo) ---------------------------------------------------------------------- Message: 1 Date: Wed, 5 Nov 2003 23:55:51 -0500 From: "MC Carpenter" <southisland2@earthlink.net> Subject: M_Boats: mast hand rail To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Message-ID: <000701c3a422$441695c0$cb154bab@D60D0Q21> Content-Type: text/plain; charset="iso-8859-1" seen today in San Diego, a short small handrail about nine inches high on the deck and 3/4 of the way around the mast (( curved around the front -bow- to both sides but not on the stern side )). safety plus - not only to hold on to but also to tie lines. do you think something like that would get in the way of stepping the mast ------------------------------ Message: 2 Date: Thu, 6 Nov 2003 00:39:03 -0500 From: "MC Carpenter" <southisland2@earthlink.net> Subject: M_Boats: fiberglass and dry ice To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Message-ID: <000b01c3a428$59808d70$e81c4bab@D60D0Q21> Content-Type: text/plain; charset="iso-8859-1" does any one know if using dry ice near on or on the fiber hull will cause and damage to the structural integrity to the resin fiberglass hull, If I was to build in a small freezer. ------------------------------ Message: 3 Date: Thu, 6 Nov 2003 00:58:55 -0500 From: "MC Carpenter" <southisland2@earthlink.net> Subject: M_Boats: floatation ring To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Message-ID: <000701c3a42b$132ef7a0$e81c4bab@D60D0Q21> Content-Type: text/plain; charset="iso-8859-1" does any know who or where I can get the floatation ring that fits around the boat like the one that is shown on the Walker Bay Boats, I called the company and the girl that answered said it only comes with the dinghy they sell. ------------------------------ Message: 4 Date: Thu, 06 Nov 2003 05:32:52 -0600 From: Howard Audsley <haudsley@tranquility.net> Subject: Re: M_Boats: floatation ring To: Montgomery Boats List <montgomery_boats@lists.xmission.com> Message-ID: <BBCF8D84.4134%haudsley@tranquility.net> Content-Type: text/plain; charset="US-ASCII" The "poor mans" version of this is to make your own out of a set of those hollow center boat bumpers. Pick the size you want. Just string them together like popcorn at Christmas. You can use eye bolts along the gunnels to hold them up. They float and act as bumpers to hold the hard dingy off the mothership. Howaard On 11/5/03 11:58 PM, "MC Carpenter" <southisland2@earthlink.net> wrote:
does any know who or where I can get the floatation ring that fits around the boat like the one that is shown on the Walker Bay Boats, I called the company and the girl that answered said it only comes with the dinghy they sell.
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
------------------------------ Message: 5 Date: Thu, 6 Nov 2003 08:12:10 -0800 From: Rachel <penokee@cheqnet.net> Subject: Re: M_Boats: floatation ring To: For and about Montgomery Sailboats <montgomery_boats@mailman.xmission.com> Message-ID: <F999CBBB-1073-11D8-B326-0003938281E0@cheqnet.net> Content-Type: text/plain; charset=US-ASCII; format=flowed Hi, I checked into this for my 7' Fatty Knees dinghy also. IIRC, the first place I checked (Add-a-Bouy?) didn't make them anymore or was out of business. Then I got a link for another place, that I can't remember, but that had a name that had something to do with "doggie." I let that go because it was going to be prohibitively expensive ($400? $700? it was so expensive I immediately put it out of mind). I also considered the fender idea that Howard describes, but I don't have that many small fenders, so it had the disadvantage of being a bit on the pricey side - unless you already have all the fenders and need a place to store them ;-) They're also slightly heavy. That idea still lurks as an option though. The idea I'm working on now (still in progress) involves two large "pool noodles" -- the brightly-colored foam tubes kids play with. This spring Wal-Mart had some extra-fat ones for $5 apiece. I bought a couple and immediately rigged them up temporarily, just to try them out, one just under each gunwale the length of the boat. They're hollow, so you can run ropes through the middle. The added flotation was amazing. As in, you could just about stand on the gunwales without tipping the dinghy or filling it with water. The next thing I did was buy a couple of feet of clear hose and cut it into ~6" lengths, which I jam fit into all the ends, to reinforce them. At this point you could use them as is, with perhaps one strap-eye mounted below the middle section, to keep them from riding up. I haven't gotten this far yet. Since I have some Sunbrella-type scraps, I'm considering sewing some sleeves for them which would incorporate a couple of tie down points. We'll see. This project is going hand-in-hand with the one where I'm just adding a smaller gunwale pad for everyday use. I envision the noodles for snorkeling and/or heavy loads in rough weather. Were you thinking of this for your M-15 or for a dinghy? FWIW --- Rachel Former owner, M-17 #334 Former owner, M-15 #517 Currently cruising on Westsail 32 #412 On Thursday, November 6, 2003, at 03:32 AM, Howard Audsley wrote:
The "poor mans" version of this is to make your own out of a set of those hollow center boat bumpers. Pick the size you want. Just string them together like popcorn at Christmas. You can use eye bolts along the gunnels to hold them up. They float and act as bumpers to hold the hard dingy off the mothership.
------------------------------ Message: 6 Date: Thu, 6 Nov 2003 08:23:18 -0800 From: "Smith, Tom" <Tom.Smith@itron.com> Subject: RE: M_Boats: gel battery To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Message-ID: <E15906480B361D4BAA27ADC6EDCAB9EE16DA7F@spokane-mx3.itron.com> Content-Type: text/plain; charset="iso-8859-1" I don't have the magazine in front of me right now, but I think in this month's issue of Sail, on the things that work page, someone talks about using one of those emergency starting units as a boat battery. Sorry for the lack of info and context on this, but for those without charging systems and just short term use requirements, this might be of interest. t Tom Smith & Jane Van Winkle Sandpoint, Idaho M15-345, Chukar M17-064, Unnamed -----Original Message----- From: Harvey Wilson [mailto:HarveyWilson@compuserve.com] Sent: Wednesday, November 05, 2003 7:54 PM To: For and about Montgomery Sailboats Subject: M_Boats: gel battery Hi.. The Optimas come in 3 varieties...red is starting batteries, the blue is the deep discharge (house batt) Can't remember what the yellow is...maybe a combination?? Do a Google search on Optima and you'll find their website and more info then you want to know about batteries. Oh yes...you _DO_ have a good idea of what your current drain is, (hopefully) ?? I've only used West Marines little gel cell, and charge it after everyuse. Harvey/Ga M-17 Stargazer #294 _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats This message was scanned for viruses!! ------------------------------ Message: 7 Date: Thu, 06 Nov 2003 10:25:40 -0700 From: "The Tentmakers" <the_tentmakers@hotmail.com> Subject: Re: M_Boats: floatation ring To: montgomery_boats@mailman.xmission.com Message-ID: <Law10-F118s8FSA4Ale000453d8@hotmail.com> Content-Type: text/plain; charset="us-ascii" An HTML attachment was scrubbed... URL: http://mailman.xmission.com/cgi-bin/mailman/private/montgomery_boats/attachm ents/20031106/95f4b4e6/attachment-0001.html ------------------------------ Message: 8 Date: Thu, 6 Nov 2003 13:25:20 -0800 From: "Mark Escovedo" <m_escovedo@msn.com> Subject: Re: M_Boats: floatation ring To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Message-ID: <BAY3-DAV55tZu9IVdRO0007fb63@hotmail.com> Content-Type: text/plain; charset="iso-8859-1" If it's added buoyancy your trying to achieve you may want to look at the inflatable bags that are installed on the "OPTIMIST" sailing dinghy. They are installed forward of the midship thwart along the inside rail of the boat. Granted the OPTIMIST is a tiny boat but maybe you could double up the number of bags. They are collapsible so when you're not using them they can be deflated to give you more interior space. I'm not sure who makes the bags but they should be no problem to locate. the INTERNATIONAL OPTIMIST is the largest one design sailboat class in the world. Good Luck Mark Escovedo 'Chunky Dory" M17 F/D #103 ----- Original Message ----- From: Rachel To: For and about Montgomery Sailboats Sent: Thursday, November 06, 2003 8:12 AM Subject: Re: M_Boats: floatation ring Hi, I checked into this for my 7' Fatty Knees dinghy also. IIRC, the first place I checked (Add-a-Bouy?) didn't make them anymore or was out of business. Then I got a link for another place, that I can't remember, but that had a name that had something to do with "doggie." I let that go because it was going to be prohibitively expensive ($400? $700? it was so expensive I immediately put it out of mind). I also considered the fender idea that Howard describes, but I don't have that many small fenders, so it had the disadvantage of being a bit on the pricey side - unless you already have all the fenders and need a place to store them ;-) They're also slightly heavy. That idea still lurks as an option though. The idea I'm working on now (still in progress) involves two large "pool noodles" -- the brightly-colored foam tubes kids play with. This spring Wal-Mart had some extra-fat ones for $5 apiece. I bought a couple and immediately rigged them up temporarily, just to try them out, one just under each gunwale the length of the boat. They're hollow, so you can run ropes through the middle. The added flotation was amazing. As in, you could just about stand on the gunwales without tipping the dinghy or filling it with water. The next thing I did was buy a couple of feet of clear hose and cut it into ~6" lengths, which I jam fit into all the ends, to reinforce them. At this point you could use them as is, with perhaps one strap-eye mounted below the middle section, to keep them from riding up. I haven't gotten this far yet. Since I have some Sunbrella-type scraps, I'm considering sewing some sleeves for them which would incorporate a couple of tie down points. We'll see. This project is going hand-in-hand with the one where I'm just adding a smaller gunwale pad for everyday use. I envision the noodles for snorkeling and/or heavy loads in rough weather. Were you thinking of this for your M-15 or for a dinghy? FWIW --- Rachel Former owner, M-17 #334 Former owner, M-15 #517 Currently cruising on Westsail 32 #412 On Thursday, November 6, 2003, at 03:32 AM, Howard Audsley wrote:
The "poor mans" version of this is to make your own out of a set of those hollow center boat bumpers. Pick the size you want. Just string them together like popcorn at Christmas. You can use eye bolts along the gunnels to hold them up. They float and act as bumpers to hold the hard dingy off the mothership.
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats