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#91
General National 12 chat / Re: Jib halyard failure
Last post by grazz - 04 Sep 2024, 08:52Hi Philip
Glad you've been enjoying the 12.
National 12 jib haylards would normally be wire with a dyneema or twisted strand rope tail. We use wire haylards on carbon masts also. The wire usually has a long loop in it allowing it to pull through the slot in the side of the mast.
Can you post a photo of your set up - a photo of the sheave at front of the mast and the the slot and whatever the cleat / fixing system is at the based of the mast. That should help us work out the problem
Happy sailing
Graham
Glad you've been enjoying the 12.
National 12 jib haylards would normally be wire with a dyneema or twisted strand rope tail. We use wire haylards on carbon masts also. The wire usually has a long loop in it allowing it to pull through the slot in the side of the mast.
Can you post a photo of your set up - a photo of the sheave at front of the mast and the the slot and whatever the cleat / fixing system is at the based of the mast. That should help us work out the problem
Happy sailing
Graham
#92
General National 12 chat / Jib halyard failure
Last post by Philip Wherry - 01 Sep 2024, 07:35Having fun learning the art of N12 sailing in no. 3454, Jammy Dodger (Nigel Waller Final Chapter), which I purchased earlier this year.
Unfortunately, I'm also having some problems with chafing on the jib halyard... The previous owner had renewed it recently so it was in good condition, but it failed at or around the halyard block after . No harm done, save for the race result, but I suspect there is a systematic issue I need to fix.
I'd really appreciate others' thoughts on possible causes and/or solutions so we can get back on the water. A few ideas / questions to start with:
- The dyneema halyard that failed seemed quite small (3mm). Is that normal N12 spec for a carbon mast?
- I see wire N12 jib halyards for sale on P&B, which I imagine would be more resistant to chafe, but I can't see it working with the mast design (the halyard emerges from a small slot on the side of the mast just above the gate, which is just big enough to admit a small loop of rope to attach to the tensioner. I'm assuming therefore the wire halyards are for aluminum masts (as on e.g. a 420). Is that right?
- I inspected and replaced the halyard block and all looked fine there. No obvious sharp edges and it ran nicely. However, there did seem to be some kind of carbon sheave on the inside of the mast at the position of the block. I've no idea as to its purpose (sidewards support to the block, maybe?), but it seemed to have some play in it and may be the offending part. My next plan is to try to inspect with an endoscope, but in the meantime, does anyone know what this might be from a design point of view and/or how to fix it. Obviously I want to avoid buying a new mast!
Thank you!
Philip
#3454 Jammy Dodger
Unfortunately, I'm also having some problems with chafing on the jib halyard... The previous owner had renewed it recently so it was in good condition, but it failed at or around the halyard block after . No harm done, save for the race result, but I suspect there is a systematic issue I need to fix.
I'd really appreciate others' thoughts on possible causes and/or solutions so we can get back on the water. A few ideas / questions to start with:
- The dyneema halyard that failed seemed quite small (3mm). Is that normal N12 spec for a carbon mast?
- I see wire N12 jib halyards for sale on P&B, which I imagine would be more resistant to chafe, but I can't see it working with the mast design (the halyard emerges from a small slot on the side of the mast just above the gate, which is just big enough to admit a small loop of rope to attach to the tensioner. I'm assuming therefore the wire halyards are for aluminum masts (as on e.g. a 420). Is that right?
- I inspected and replaced the halyard block and all looked fine there. No obvious sharp edges and it ran nicely. However, there did seem to be some kind of carbon sheave on the inside of the mast at the position of the block. I've no idea as to its purpose (sidewards support to the block, maybe?), but it seemed to have some play in it and may be the offending part. My next plan is to try to inspect with an endoscope, but in the meantime, does anyone know what this might be from a design point of view and/or how to fix it. Obviously I want to avoid buying a new mast!
Thank you!
Philip
#3454 Jammy Dodger
#93
Boats / Re: N1762 Caribbean Queen
Last post by edwillett - 30 Aug 2024, 04:40For sale on FB Market place August 2024. Located near Nottingham.
Advert states
"Beautiful wooden classic sailing boat
With sails
Single axle trailer
Buoys
Rigging"
Advert states
"Beautiful wooden classic sailing boat
With sails
Single axle trailer
Buoys
Rigging"
#94
Boats / Re: N2889 American Pie
Last post by edwillett - 30 Aug 2024, 08:11Spotted by Nigel May in Ellesmere, August 2024, serving out retirement as a"planter"!
#95
Boats / Re: N3288 Made to Measure
Last post by edwillett - 30 Aug 2024, 08:08Offered for "free" in April 2024 as per the photograph...sadly a follow up post in August 2024 noted "Unfortunately I am going to have to scrap the hull of 3288 due to complete delamination of the hull. If anyone is interested in any of the parts or fittings get in touch. Have complete alloy rig and two sets of average sails rudders, etc"
#96
General National 12 chat / Re: Burton week Photos
Last post by 3513SL - 27 Aug 2024, 08:07Photos of the Burton Cup & Tuesday's racing taken by Pavel Kricka are available to view & buy here:
https://pavelkrickaphotography.shootproof.com/gallery/Burtonweek2024/home
https://pavelkrickaphotography.shootproof.com/gallery/Burtonweek2024/home
#97
Boats / Re: N1012 Caprice
Last post by edwillett - 27 Aug 2024, 09:53Further pictures from the advert
#98
Boats / Re: N1012 Caprice
Last post by edwillett - 27 Aug 2024, 09:52Advertised on FB Marketplace August 2024.
Advert reads as follows - "National 12 1012 from 1951. For complete restoration. Clinker mahogany. Built by Jack Holt. Needs new timbers and some planks plus fastenings, deck etc. Original cotton sails, mast (has woodworm). 2x booms. Centreboard, rudder. Includes letter about the boat from Jack himself. Collect from near Grafham Water. Dry stored last 30 years. Message me for more photos etc".
Advert reads as follows - "National 12 1012 from 1951. For complete restoration. Clinker mahogany. Built by Jack Holt. Needs new timbers and some planks plus fastenings, deck etc. Original cotton sails, mast (has woodworm). 2x booms. Centreboard, rudder. Includes letter about the boat from Jack himself. Collect from near Grafham Water. Dry stored last 30 years. Message me for more photos etc".
#99
General National 12 chat / Burton week Photos
Last post by NTOACertification - 26 Aug 2024, 07:43MY BURTON WEEK PHOTOS ARE BEING UPLOADED TO FLICKR T ALBUMS.
https://flic.kr/s/aHBqjBEzj5
https://flic.kr/s/aHBqjBEHKf
HON CERTIFICATION OFFICER KB
https://flic.kr/s/aHBqjBEzj5
https://flic.kr/s/aHBqjBEHKf
HON CERTIFICATION OFFICER KB
#100
Boats / Re: N2571 Lazy Bones 2
Last post by lazybones2 - 25 Aug 2024, 10:08Stored on her side in a garage in Gloucestershire for at least 25 years, pulled out and trailed to Felixstowe in 2021. Just finished repainting and repairing the gelcoat, Hoping to have her launched sometime in September.