Carbon Fiber Mast Cracks

Carbon Fiber Mast Cracks

Postby BAADS » Mon Mar 19, 2018 3:12 pm

We at BAADS in San Francisco got a Freedom 21 donated. We subsequently found deep cracks in the mast at the holes where the halyards enter the mast, looks like the cracking occurs along the drilled holes at the top of the fittings, both sides. Fix advice is all over the map, from a $7K total sleeve to just a carbon fiber and epoxy patch. Have read Sponberg's document. We're looking for advice from anyone who's seen this issue and has made an affordable and safe fix. Do these look fatal if un-repaired? Will mast eventually snap under load? Is a simple patch adequate? Thanks for your help!
Attachments
Freedom 21 Mast Cracks.pdf
Here are 3 close-ups of the cracks that concern us.
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Last edited by BAADS on Tue Mar 20, 2018 7:21 pm, edited 1 time in total.
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Re: Carbon Fiber Mast Cracks

Postby Goose13 » Tue Mar 20, 2018 5:39 pm

I'll be sailing the Bay all next week, I owned a F21 from 2008-2013, I would be happy to stop by and look at it for an hour. I'm no expert but I can compare it to the boat I use to own and see if the cracking is really and issue. Just let me know when and where. I'll be coming out of Vallejo on Saturday 25MAR18 and heading back around the 1st, I just need a slip to pull into since my F33 will be my only form of transportation.
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Re: Carbon Fiber Mast Cracks

Postby BAADS » Tue Mar 20, 2018 7:20 pm

Thanks Goose13. The boat is at South Beach Marina at the SBYC/BAADS dinghy dock, across from the guest slips, and is right under the hoist. I can meet you the 25th. We will need my gate key to access the dinghy dock. I'm heading up to Reno the 26th in the morning for a couple of weeks. Did you see the photos in the PDF? These are the cracks that concerned us and the carbon fiber expert at Spaulding Marine the most. Others say not a big deal to grind out and patch. Lots of small compression cracks appear all the way up our mast and may just be cosmetic gel coat cracks. There is another F21 just up the dock from us, she has the same compression cracks all the way up. -Eric Roberts, BAADS
Attachments
Freedom Mast Repairs (Spondberg).pdf
This is a great document on the crack fix.
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Re: Carbon Fiber Mast Cracks

Postby Goose13 » Tue Mar 20, 2018 8:29 pm

I'll meet you there on the 25th. I'll let you know if I get delayed for weather.
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Re: Carbon Fiber Mast Cracks

Postby BAADS » Sat Mar 24, 2018 9:00 pm

One more close-up of our starboard side mast crack. Seems to penetrate at least half way through the laminate layers. Port side crack is longer, thinner, but when you stick a finger in the halyard hole and feel the inside of the mast, you can feel that it goes all the way through.
Attachments
_DSC0157_sm.jpg
Micro shot of crack on starboard side halyard guide box.
_DSC0157_sm.jpg (33.46 KiB) Viewed 631 times
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Re: Carbon Fiber Mast Cracks

Postby Goose13 » Sat Mar 24, 2018 11:11 pm

Is the Mast unstepped? I was delayed today after loosing my clew line on my main mast in San Pablo bay not sure what time I will arrive tomorrow since it is a sail boat but I'm hoping for mid afternoon. We will be spending the night in the South Beach Harbor. I'll be the blue double masted Freedom.
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Re: Carbon Fiber Mast Cracks

Postby BAADS » Sun Mar 25, 2018 11:34 am

Ok will look for you this afternoon. The mast is still stepped. I have a gate key to the dinghy dock where she's tied.
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Re: Carbon Fiber Mast Cracks

Postby BAADS » Sun Mar 25, 2018 7:02 pm

Sorry I missed you today Goose13, I went down looking a few times. It is perfectly OK for you to tie up briefly to the SBYC/BAADS dinghy dock at the north end of the marina and take a look on your way out. -Eric, BAADS
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Re: Carbon Fiber Mast Cracks

Postby Goose13 » Mon Mar 26, 2018 11:01 pm

Eric, I was delayed longer than I thought. I just arrived in Berkley late this afternoon. If you would like I could sail in tomorrow late afternoon and spend the night in South Beach Marina. Let me know, I'll check the Forum tomorrow morning. Doug
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Re: Carbon Fiber Mast Cracks

Postby BAADS » Tue Mar 27, 2018 8:33 pm

No problem Doug, we have a bunch of folks, including an engineer, who have or will look at it, we should be able to come up with a fix. We'll post our findings!!
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