Devotti Single Hander |
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jeffers
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Joined: 29 Mar 04 Location: United Kingdom Online Status: Offline Posts: 3048 |
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Topic: Devotti Single HanderPosted: 14 Sep 09 at 11:51am |
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We have a guy at Hunts who has a white painted carbon mast on his boat. It did look odd to start with, the problem is that makes him stand out from the rest of the fleet so he cannot push the start as he is too easy to identify! Like me in my light blue Laser I suppose..... |
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Paul
---------------------- D-Zero GBR 74 |
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rodney
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Joined: 26 Feb 09 Location: United Kingdom Online Status: Offline Posts: 915 |
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Posted: 14 Sep 09 at 1:13pm |
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Apologies for failing to do my morning postings as intended but I am still suffering the effects from last nights party which caused me to have a late start! Painted carbon masts have some benefits and have been used in the Finn class for many years - turnturtle, you are right that they are cool as black masts can get very hot in the sun (one of the first D-One customers is from Dubai and with temperatures there it's almost a necessity) - the other benefit is that the paint protects the mast from UV degradation which can be a serious problem with carbon. The downside is that the paint increases the weight of the mast! More later! Rodney |
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matbard
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Joined: 07 Jul 09 Location: Italy Online Status: Offline Posts: 46 |
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Posted: 14 Sep 09 at 2:22pm |
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I'd like to add another technical question. I'm going to put some dyneema racing sheets on the D-One. To your knowledge, is right to have a tapered genny sheet or better having a standard single-braid on it? The stock genny sheet on the D-One is about 13 meters in lenght with a diameter of 6mm. |
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- Matteo Barducci
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sten
Far too distracted from work
Joined: 07 Mar 05 Location: United Kingdom Online Status: Offline Posts: 208 |
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Posted: 14 Sep 09 at 2:27pm |
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I had a Finn mast that I sanded 1/2kg of paint off, carbon mast manufacture has improved alot scince and the clear finish mast became fashionable to show the quality lay up, mast builders used to stick and sand to get the required bend numbers then fill and paint over to make it look nice. the disadvantage is small in speed until you get rolled by the boat next to you then the smallest difference is everything. best to have the same colour mast as everyone else unless you want to be easily identified as ocs |
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matbard
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Joined: 07 Jul 09 Location: Italy Online Status: Offline Posts: 46 |
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Posted: 14 Sep 09 at 2:43pm |
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How much I must taper the sheets? I tought about 2 meters per side, or better the standard 1/3 1/3 1/3 (1/3 tapered, 1/3 stock, 1/3 tapered)? |
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- Matteo Barducci
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sten
Far too distracted from work
Joined: 07 Mar 05 Location: United Kingdom Online Status: Offline Posts: 208 |
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Posted: 14 Sep 09 at 3:03pm |
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it was a nice glossy finish and quite a lot of filler to make it fair. I was quite happy to get it down to minimum weight even though it wasn't so pritty anymore. tapered sheets are better, especially in light winds and less likely to catch on anything. as for amount rig you boat oversheet the kite and you can taper from the blocks. I would doubt you will be soaking much,the D1 didn't need much wind to get going when I sailed it, there has to be almost no wind before no kite works better. |
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matbard
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Joined: 07 Jul 09 Location: Italy Online Status: Offline Posts: 46 |
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Posted: 14 Sep 09 at 6:38pm |
Interesting point: some people prefer tieing the tails to the clew, others prefer the bull-hitch method and tie the ends together using a fishermans knot... What is your choice and why? Stan, Am I wrong or I saw some Finns with even a tapered mainsheet? |
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- Matteo Barducci
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alstorer
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Joined: 02 Aug 07 Location: Cambridge Online Status: Offline Posts: 2899 |
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Posted: 14 Sep 09 at 7:17pm |
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Doesn't matter where the knot is when you realise that helm's managed to get the forestay "outside" the "windward" sheet when putting the tension on... again.
Ahem Anyway, I know there's people with tapered mainsheets on B14s. I also know of one helm who ditched her gucci machine tapered one in favour of one that wasn't as slippery as hell. Tapered jib and spinnaker sheets are also prevalent and worth maybe 0.345 seconds/hour. Our spinny sheet isn't fully tapered, however it is attached by a short (maybe 8-10cm?) section of core which has been pulled out of the centre, and the two sides stiched together to form a small loop. Nice and low profile, which is essential with a forestay. On the D-one, you've not got that issue, but why would you want big bulky knots out on the kite? |
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Al |
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tickler
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Joined: 03 Jun 07 Location: Tunstead Milton Online Status: Offline Posts: 895 |
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Posted: 14 Sep 09 at 7:50pm |
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John Claridge when building Magnum Moth masts found that when giving alloy masts their pre anodising acid dip, if he left them in longer it thinned the wall thickness. We have the top of one here, it broke off when the boat blew over. It is very thin and light. We replaced it with a fibreglass windsurfer mast, it seemed to work. I also have a Goldspar mast.......any chance of gold comming back into fashion?
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matbard
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Joined: 07 Jul 09 Location: Italy Online Status: Offline Posts: 46 |
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Posted: 19 Sep 09 at 11:06pm |
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Today no wind at the club, so I had time to take some pics of my baby. I forgot to bring my DSLR with me, so I have to shoot them with my iPhone:
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- Matteo Barducci
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