Re: M_Boats: montgomery_boats Digest, Vol 195, Issue 19
Re-Mast Failure, Thanks for the information, Will be calling Dwyer on Tuesday, Any thoughts on using SS tangs riveted to the mast as opposed the original hole and bolt method? Thanks again, Kevin ________________________________ From: montgomery_boats <montgomery_boats-bounces@mailman.xmission.com> on behalf of montgomery_boats-request@mailman.xmission.com <montgomery_boats-request@mailman.xmission.com> Sent: Sunday, May 26, 2019 1:00 PM To: montgomery_boats@mailman.xmission.com Subject: montgomery_boats Digest, Vol 195, Issue 19 Send montgomery_boats mailing list submissions to montgomery_boats@mailman.xmission.com To subscribe or unsubscribe via the World Wide Web, visit https://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. M-17 Mast Failure (Kevin Sandwick) 2. Re: M-17 Mast Failure (Dave Scobie) 3. Re: M-17 Mast Failure (John Schinnerer) 4. Re: M-17 Mast Failure (Thomas Buzzi) ---------------------------------------------------------------------- Message: 1 Date: Sun, 26 May 2019 01:27:39 +0000 From: Kevin Sandwick <ksandwick@hotmail.com> To: "montgomery_boats@mailman.xmission.com" <montgomery_boats@mailman.xmission.com> Subject: M_Boats: M-17 Mast Failure Message-ID: <DM6PR16MB32579D72AA9B2C0144678059AA1C0@DM6PR16MB3257.namprd16.prod.outlook.com> Content-Type: text/plain; charset="iso-8859-1" I had a catastrophic mast failure today. In my analysis I believe there were three factors. 1- Oversized bolt hole at the spreaders 2- Loose inner stays 3- Strong gust in an already brisk wind. The mast parted right where the spreader bolt goes through the mast. After cleaning up the chaos at the deck I was able to get to shore and survey the carnage. My question at this point is, What is the mast section/profile. Looking at Dwyer Mast there are many to choose from. Is there a particular supplier for Montgomery masts? It is too early in the season to give up the game so I am going to try and get back on the water as soon as I can. Thanks in advance for any information. Kevin Nauti-Cal Hull #400 ------------------------------ Message: 2 Date: Sat, 25 May 2019 18:40:44 -0700 From: Dave Scobie <scoobscobie@gmail.com> To: For and about Montgomery Sailboats <montgomery_boats@mailman.xmission.com> Subject: Re: M_Boats: M-17 Mast Failure Message-ID: <CAGjBOA4FyDzoBKVK3i4yn_Z2iNg5Duo_8dR1j4guVy7oqC5xJw@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Kevin. Glad you weren't hurt! Boats can be fixed. Closest.mast match is a Dwyer DM-6 :: Dave Scobie :: M6'8" #650 :: SV SWALLOW - sv-swallow.com :: former owner M17 #375 SWEET PEA - m17-375.com :: former owner M15 #288 SCRED - www.freewebs.com/m15-named-scred/<http://www.freewebs.com/m15-named-scred/> On Sat, May 25, 2019, 6:28 PM Kevin Sandwick <ksandwick@hotmail.com> wrote:
I had a catastrophic mast failure today. In my analysis I believe there were three factors. 1- Oversized bolt hole at the spreaders 2- Loose inner stays 3- Strong gust in an already brisk wind.
The mast parted right where the spreader bolt goes through the mast. After cleaning up the chaos at the deck I was able to get to shore and survey the carnage. My question at this point is, What is the mast section/profile. Looking at Dwyer Mast there are many to choose from. Is there a particular supplier for Montgomery masts? It is too early in the season to give up the game so I am going to try and get back on the water as soon as I can. Thanks in advance for any information. Kevin Nauti-Cal Hull #400
------------------------------ Message: 3 Date: Sat, 25 May 2019 22:24:35 -0700 From: John Schinnerer <john@eco-living.net> To: montgomery_boats@mailman.xmission.com Subject: Re: M_Boats: M-17 Mast Failure Message-ID: <bafad372-d509-9a2f-82bb-06e2f6c490b5@eco-living.net> Content-Type: text/plain; charset=utf-8; format=flowed Ouch!! Major bummer, sad to hear this. And ditto Dave, glad you are OK, our masts & connected stuff are plenty big to be dangerous when they break. Someone else here recently got a mast from Dwyer and IIRC was sent their hinged base plate instead of the SS tabernacle normally used on Montys...so if you order from them be sure to specify the right step hardware. Best wishes for getting back on the water sooner than later... John On 5/25/19 6:27 PM, Kevin Sandwick wrote:
I had a catastrophic mast failure today. In my analysis I believe there were three factors. 1- Oversized bolt hole at the spreaders 2- Loose inner stays 3- Strong gust in an already brisk wind.
The mast parted right where the spreader bolt goes through the mast. After cleaning up the chaos at the deck I was able to get to shore and survey the carnage. My question at this point is, What is the mast section/profile. Looking at Dwyer Mast there are many to choose from. Is there a particular supplier for Montgomery masts? It is too early in the season to give up the game so I am going to try and get back on the water as soon as I can. Thanks in advance for any information. Kevin Nauti-Cal Hull #400
-- John Schinnerer - M.A., Whole Systems Design -------------------------------------------- - Eco-Living - Whole Systems Design Services People - Place - Learning - Integration john@eco-living.net - 510.982.1334 http://eco-living.net http://sociocracyconsulting.com ------------------------------ Message: 4 Date: Sun, 26 May 2019 09:51:12 -0500 From: Thomas Buzzi <thomaspbuzzi@gmail.com> To: For and about Montgomery Sailboats <montgomery_boats@mailman.xmission.com> Subject: Re: M_Boats: M-17 Mast Failure Message-ID: <CA+TbpAV0ZChvmwPK_PGEueVB7hq6ZfQMaOt9W89uz3ko8-=NHw@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Did crevice corrosion due to electrolysis play any part in weakening your mast at the spreaders? Stainless Steel bolt, tangs, etc. and aluminum contact. Lost a mast on a 20footer once off the coast of Florida. Thank goodness for the "iron jenny". I was out in the Gulf Stream drifting north at about 3 knots, away from my home port. Fair winds, Tom Buzzi On Sat, May 25, 2019 at 8:28 PM Kevin Sandwick <ksandwick@hotmail.com> wrote:
I had a catastrophic mast failure today. In my analysis I believe there were three factors. 1- Oversized bolt hole at the spreaders 2- Loose inner stays 3- Strong gust in an already brisk wind.
The mast parted right where the spreader bolt goes through the mast. After cleaning up the chaos at the deck I was able to get to shore and survey the carnage. My question at this point is, What is the mast section/profile. Looking at Dwyer Mast there are many to choose from. Is there a particular supplier for Montgomery masts? It is too early in the season to give up the game so I am going to try and get back on the water as soon as I can. Thanks in advance for any information. Kevin Nauti-Cal Hull #400
------------------------------ Subject: Digest Footer _______________________________________________ montgomery_boats mailing list montgomery_boats@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats Remember, there is no privacy on the Internet! ------------------------------ End of montgomery_boats Digest, Vol 195, Issue 19 *************************************************
Kevin. Tangs need to move or you are likely to bend the upper swage fittings on the shrouds as you raise/lower the mast. If the mast folded at the spreaders wondering about the mast wall being dimpled from prior damage or to much tightening of the bolt securing the spreaders. Did the bolt have a compression post? Incorrect tuning is also a possibility. If the mast got out of line of itself - fold away. So few of Jerry's rigs have failed, excluding hitting trees, I'd not think the hardware installation is the cause of the accident. :: Dave Scobie :: M6'8" #650 :: SV SWALLOW - sv-swallow.com :: former owner M17 #375 SWEET PEA - m17-375.com :: former owner M15 #288 SCRED - www.freewebs.com/m15-named-scred/ On Sun, May 26, 2019, 2:15 PM Kevin Sandwick <ksandwick@hotmail.com> wrote:
Re-Mast Failure, Thanks for the information, Will be calling Dwyer on Tuesday, Any thoughts on using SS tangs riveted to the mast as opposed the original hole and bolt method? Thanks again, Kevin ________________________________ Kevin.
Glad you weren't hurt! Boats can be fixed.
Closest mast match is a Dwyer DM-6
:: Dave Scobie :: M6'8" #650 :: SV SWALLOW - sv-swallow.com :: former owner M17 #375 SWEET PEA - m17-375.com :: former owner M15 #288 SCRED - www.freewebs.com/m15-named-scred/< http://www.freewebs.com/m15-named-scred/>
On Sat, May 25, 2019, 6:28 PM Kevin Sandwick <ksandwick@hotmail.com> wrote:
I had a catastrophic mast failure today. In my analysis I believe there were three factors. 1- Oversized bolt hole at the spreaders 2- Loose inner stays 3- Strong gust in an already brisk wind.
The mast parted right where the spreader bolt goes through the mast. After cleaning up the chaos at the deck I was able to get to shore and survey the carnage. My question at this point is, What is the mast section/profile. Looking at Dwyer Mast there are many to choose from. Is there a particular supplier for Montgomery masts? It is too early in the season to give up the game so I am going to try and get back on the water as soon as I can. Thanks in advance for any information. Kevin Nauti-Cal Hull #400
participants (2)
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Dave Scobie -
Kevin Sandwick