Re: M_Boats: proper boom placement
Thom: with the sliding gooseneck you need to have a line that keeps the 'mast end' of the boom from rising. you also need a vang to keep the boom from rising when off the wind. the vang is also used when going to weather based on the conditions and your preferences in adjusting sail shape. be sure to review the information shared by JudyB ... i agree with all she said (yes, it is true that as sail become older than five or so years need to be replaced even if not heavy used). a sail original to your boat is way past replacement date. :: Dave Scobie -------------------------------------------- On Tue, 3/11/14, Thom Loftus <thom_loftus@yahoo.com> wrote: Subject: Re: M_Boats: proper boom placement To: "W David Scobie" <wdscobie@yahoo.com> Date: Tuesday, March 11, 2014, 7:04 PM Hi Dave.Not sure who made my mainsail, but I'll check.Is it safe to say that the boom should sit wherever it wants to naturally sit on the mast when the sail is fully raised? I guess I'm also wondering if a boom vang is sufficient for keeping downward tension on the boom, or if you advise also rigging some kind of downhaul from the bottom of the gooseneck to the deck (i.e. some means of locking the gooseneck in place).Thanks,Thom From: W David Scobie <wdscobie@yahoo.com> To: Thom Loftus <thom_loftus@yahoo.com> Sent: Tuesday, March 11, 2014 2:36 PM Subject: Re: M_Boats: proper boom placement Thom: was your main made by McKibben (sic)? my M15's ('84) and my M17's ('83) mains were/are McK sails. both set the aft end of the boom low (good for hitting heads). when i talked to Harry Pattison, with E/P sailmakers, about this his guess (besides the sails being old and blow out) is McK cut the sails this way to gain a few extra square feet of sail area. when Harry made the new main for my M15 it was cut so the boom was 'flat'. i had Harry re-cut the foot of my M17's blown out old main to be loose foot and set the boom flat. :: Dave Scobie -------------------------------------------- On Tue, 3/11/14, Thom Loftus <thom_loftus@yahoo.com> wrote: Hi Dave.1987. The main is older I think, but in good shape. The previous owner didn't sail much and there's no indication that it's blown out. From: W David Scobie <wdscobie@yahoo.com> Sent: Tuesday, March 11, 2014 2:26 PM Thom: what year is your M15? how old is the main? :: Dave Scobie -------------------------------------------- On Tue, 3/11/14, Thom Loftus <thom_loftus@yahoo.com> wrote: Hello All. I've recently replaced the mast on my M15 and have noticed that when my mainsail is hoisted as far as it will go up the mast, and the luff is relatively taught, that the end of the boom droops at a downward angel from the gooseneck when the topping lift is eased. It's almost as if the foot of my mainsail is cut at an angle, but I can't confirm that at the moment. In looking at pictures online, it is difficult to tell if this is the way the boom is supposed to sit, or if there is something wrong with my rig. I have not yet installed a boom vang and I don't actually know how high off of the deck the boom should sit at the gooseneck. I have no cunningham rigged and to keep the boom from inching up in the mast, I usually tie it to the deck from a loop in the gooseneck. Can anyone enlighten me as to how hight off the deck my boom should sit and whether or not the boom should angle down as it moves aft? Thanks Thom
Hi Mboaters, We topped 60 degrees yesterday so I was able to get one of the marina shop guys with a moisture meter out to check my deck under the tabernacle that I have thought had issues. The meter confirms that a local area under the tabernacle is wet and some of the photos of the cabin ceiling (https://picasaweb.google.com/110938325409185510143/M23) show the result of the deck being mushy and putting loads on the end of the bulkhead/boards under the tabernacle. This also caused the cracks and depression in the cabin floor. This has been going on for some time but I can see signs it was getting worse as time went on. So the deck is due for a facelift and some solid replacement of core under the tabernacle. Not a big area. I will have the shop at the marina do this as I have too many other boat projects ongoing to tackle this one as well. I will try and take some photos of the repair for anyone interested. Look for spring! Robbin M-23
Hi Robbin - is that some epoxy filler in the deck core already in the photo? I am going to remove my tabernacle and install a mast plate organizer. I think I'll oversize the deck holes when I take it off and inject the area with epoxy to try and seal out any water getting into the balsa core there. I think I'm ok, mine cabin top feels & sounds solid. Thanks for sharing, hope all goes well. Just finished installing a new Garilick motor mount like Sean has. I backed it up with a large stainless plate. It works great, I really like it. Also, just finished putting my 3rd coat of West Marine clear epoxy (207 hardener) barrier coat on the rudder today. I just ordered a new set of sails, should be ready in about four weeks. Getting closer every day to the maiden voyage! Todd Bradley M-23 #86 -----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of Robbin Roddewig Sent: Wednesday, March 12, 2014 6:49 PM To: montgomery_boats@mailman.xmission.com Subject: M_Boats: Deck repairs Hi Mboaters, We topped 60 degrees yesterday so I was able to get one of the marina shop guys with a moisture meter out to check my deck under the tabernacle that I have thought had issues. The meter confirms that a local area under the tabernacle is wet and some of the photos of the cabin ceiling (https://picasaweb.google.com/110938325409185510143/M23) show the result of the deck being mushy and putting loads on the end of the bulkhead/boards under the tabernacle. This also caused the cracks and depression in the cabin floor. This has been going on for some time but I can see signs it was getting worse as time went on. So the deck is due for a facelift and some solid replacement of core under the tabernacle. Not a big area. I will have the shop at the marina do this as I have too many other boat projects ongoing to tackle this one as well. I will try and take some photos of the repair for anyone interested. Look for spring! Robbin M-23
Hi Todd, yes it is good to avoid leaks that saturate balsa core. No epoxy filler in the deck that I know of. I am pretty sure Jerry M told me they put balsa core in the whole cabin top. Looking at the set up the loads from the mast are not meant to be transferred to the keel via a compression post but more spread by the cabin top to the bulkhead. This was not clear until I took apart the three boards that I would have called the compression post. It does not go to the keel nor does the floor it rests on. There is a gap (was a gap, not on mine anymore). I will have a better idea when they open up the top of the deck but it looks like the board just punctured a hole in what ever is in the core now after breaking through the ceiling. As I peel back layers it becomes more obvious what was happening. But the water intrusion has been going on before I got the boat and it was not until last summer when I was sleeping on the boat and it was raining that I noticed the tabernacle area leaking. Kept wondering what the small puddles were on the cabin floor now and then :) The Garilick mount seems to work well for me. I had to space it off the transom with a couple of spacer boards but it works fine! Glad you have yours all set! There is a lot to maintaining a boat made over 30 years ago! But they sail really nice! And supposedly they are fast. May race mine this summer if I can get it all set. I have new sails as of last season and it made a really nice difference. I know that there are camps but I love the convenience of the furling head sail. And safety of not going forward. Hope you are on the water soon! Thanks Robbin On 3/13/2014 12:05 AM, Todd Bradley wrote:
Hi Robbin - is that some epoxy filler in the deck core already in the photo? I am going to remove my tabernacle and install a mast plate organizer. I think I'll oversize the deck holes when I take it off and inject the area with epoxy to try and seal out any water getting into the balsa core there. I think I'm ok, mine cabin top feels & sounds solid. Thanks for sharing, hope all goes well.
Just finished installing a new Garilick motor mount like Sean has. I backed it up with a large stainless plate. It works great, I really like it.
Also, just finished putting my 3rd coat of West Marine clear epoxy (207 hardener) barrier coat on the rudder today.
I just ordered a new set of sails, should be ready in about four weeks.
Getting closer every day to the maiden voyage!
Todd Bradley
M-23 #86
-----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of Robbin Roddewig Sent: Wednesday, March 12, 2014 6:49 PM To: montgomery_boats@mailman.xmission.com Subject: M_Boats: Deck repairs
Hi Mboaters, We topped 60 degrees yesterday so I was able to get one of the marina shop guys with a moisture meter out to check my deck under the tabernacle that I have thought had issues. The meter confirms that a local area under the tabernacle is wet and some of the photos of the cabin ceiling (https://picasaweb.google.com/110938325409185510143/M23) show the result of the deck being mushy and putting loads on the end of the bulkhead/boards under the tabernacle. This also caused the cracks and depression in the cabin floor. This has been going on for some time but I can see signs it was getting worse as time went on. So the deck is due for a facelift and some solid replacement of core under the tabernacle. Not a big area. I will have the shop at the marina do this as I have too many other boat projects ongoing to tackle this one as well. I will try and take some photos of the repair for anyone interested.
Look for spring!
Robbin M-23
Robbin - oh yea, you have the Garlick motor mount too. Happy with yours? .....next project is to take the toe-rail off and re-bed that baby like you have done. I get a lot of leaking there. I have had my cabin top covered because I'm remaking some of the teak and with the front deck exposed, the rain runs down under the tarp and leaks in through the toe rail screw holes. And even in a light rain, I get quite a bit of water accumulation on my port side berth. Todd Bradley M-23 #86 -----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of Robbin Roddewig Sent: Wednesday, March 12, 2014 6:49 PM To: montgomery_boats@mailman.xmission.com Subject: M_Boats: Deck repairs Hi Mboaters, We topped 60 degrees yesterday so I was able to get one of the marina shop guys with a moisture meter out to check my deck under the tabernacle that I have thought had issues. The meter confirms that a local area under the tabernacle is wet and some of the photos of the cabin ceiling (https://picasaweb.google.com/110938325409185510143/M23) show the result of the deck being mushy and putting loads on the end of the bulkhead/boards under the tabernacle. This also caused the cracks and depression in the cabin floor. This has been going on for some time but I can see signs it was getting worse as time went on. So the deck is due for a facelift and some solid replacement of core under the tabernacle. Not a big area. I will have the shop at the marina do this as I have too many other boat projects ongoing to tackle this one as well. I will try and take some photos of the repair for anyone interested. Look for spring! Robbin M-23
participants (3)
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Robbin Roddewig -
Todd Bradley -
W David Scobie