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Oinks View Drop Down
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Joined: 24 Oct 14
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Posts: 267 		Post Options Post Options   Quote Oinks Quote  Post ReplyReply Direct Link To This Post Topic: Dodgy knee friendly single handers
    Posted: 24 Dec 19 at 9:04pm
Challenger trimaran?
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Sam.Spoons View Drop Down
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Joined: 07 Mar 12
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Posts: 3401 		Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 7:21pm
Originally posted by tink

Probably the most of topic thread ever... but still really interesting and positive.

I'm a fan of 'thread creep' these things are a bit like a conversation in the clubhouse bar after sailing, nowt wrong with them wandering off the subject a bit.  Embarrassed
Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"
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Sam.Spoons View Drop Down
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Joined: 07 Mar 12
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Posts: 3401 		Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 7:07pm
Originally posted by JimC

Originally posted by Sam.Spoons

I was going to paint mine white but was told the recommended white two pack is not UV resistant

Titanium dioxide - standard white paint pigment - is a standard ingredient in suncreens, and International claim their topside paints are specially formulated for high UV protection. I would be very interested to hear the justification from whoever told you that...


Also somewhere else, facebook I think in the dinghy advice or Blaze group but not found it yet.

edit :- it was Pete Jary in my Jun 19th thread on the Dinghy and boat advice group, can't seem to link to it..... this might get you there  https://www.facebook.com/groups/DinghyAndBoatAdvice/permalink/2365825226796474/

FWIW Jim, you agreed with me that car paint would work  Thumbs Up


Edited by Sam.Spoons - 24 Dec 19 at 7:17pm
Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"
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tink View Drop Down
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Really should get out more


Joined: 23 Jan 16
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Posts: 789 		Post Options Post Options   Quote tink Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 6:15pm
Probably the most of topic thread ever... but still really interesting and positive.

If you’re ever up in Harrtlepool you can drop in on the Huntsman Titanium Dioxide plant. You can also pop in in the Able oil rig recycling plant. 
Tink
https://tinkboats.com

http://proasail.blogspot.com
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JimC View Drop Down
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Joined: 17 May 04
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Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 6:07pm
Originally posted by Sam.Spoons

I was going to paint mine white but was told the recommended white two pack is not UV resistant

Titanium dioxide - standard white paint pigment - is a standard ingredient in suncreens, and International claim their topside paints are specially formulated for high UV protection. I would be very interested to hear the justification from whoever told you that...
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Sam.Spoons View Drop Down
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Posts: 3401 		Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 5:18pm
I was going to paint mine white but was told the recommended white two pack is not UV resistant and you still need to varnish on top which seemed a bit of a waste of time and money.....

I haven't got around to it yet but will investigate car paints and rattle cans before I spend £70+ for the 'proper'stuff.


Edited by Sam.Spoons - 24 Dec 19 at 5:19pm
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tink View Drop Down
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Joined: 23 Jan 16
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Posts: 789 		Post Options Post Options   Quote tink Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 5:05pm
Originally posted by ian.r.mcdonald

My Osprey tin mast is still competitive inland against the carbon.

And not having to fret about varnishing against UV is good.

But perhaps the option of carbon repair rather alloy replacement may keep some older boats away from insurance write off?

Don’t get me started, white pigment or paint them white. The dark side that is marketing has decided the must look carbon 
Tink
https://tinkboats.com

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tink View Drop Down
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Joined: 23 Jan 16
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Posts: 789 		Post Options Post Options   Quote tink Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 5:00pm
Originally posted by zeon

Originally posted by Sam.Spoons

Why bother going from a parallel tin mast to a tapered one? It will certainly make the boat more manageable in a blow but they'll all need new sails too as the curve will be different. Might as well go for a carbon stick straight away.

When I was considering a Streaker I found an article where the current or recent National champion sad (something to the effect of) "we all know the Streaker is 'difficult' offwind in a blow" so I decided not to buy one. If they had a carbon rig I may reconsider.

WRT carbon booms, they hurt a lot less if you get it by one and that's enough to convince me of their value.

After talking to a long term streaker sailor and class committee member I believe there is quite a lot of opposition to the change to a tapered mast . Even though the choice is a tapered mast or no masts at all ! Sailors can be a strange lot lol 

Re changing to carbon masts, there is one very good reason for not changing and that is cost. I know from looking into it with my class a couple of years ago. A that time a aliminium m1 tapered mast was @800 while a superspars carbon mast was about twice that . That’s a lot of money to spend lose less than two pounds in weight and when the only proformance advantage only happens in extreme conditions when I wouldnt be sailing anyway . On the other hand I did buy a carbon boom at that time  Smile

The advantages of carbon on unstayed masts are undeniable. To my mind the advantages on stayed masts are less clear cut, especially  if you factor in the extra cost. 

There is a Topic all about the how the Streaker mast which  I think is a new class of mast: the barely stayed mast. The shrouds are very slack. 
Tink
https://tinkboats.com

http://proasail.blogspot.com
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Cirrus View Drop Down
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Joined: 29 Oct 15
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Posts: 590 		Post Options Post Options   Quote Cirrus Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 4:44pm
Some Blaze sailors prefer the M7 and it doesn't seem slower ....

Totally true and several National and Inland championships have been won by alloy masts against carbon since they were introduced about a decade ago .... including this year.  There is a weight advantage for carbon but overall you would not know which is likely to prevail in any particular event in advance.  The standard North sail sits very well on both options
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Sam.Spoons View Drop Down
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Joined: 07 Mar 12
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Posts: 3401 		Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 24 Dec 19 at 2:34pm
Originally posted by zeon

It’s no where near as clear cut as that with the British moth .


The carbon mast is roughly half the weight of the M7, I weighed mine with rigging and calculated the weight of the wire to get back to the mast weight. With shrouds, forestay and halyard the M7 weighs 7.8kg, the Carbon, 5.3kg.

Originally posted by 423zero

I have no difficulty stepping a Enterprise mast on my own, presumably a carbon mast wouldn't make much difference to me, other than capsize weight.

Weight aloft does make a difference even when upright but I think the performance advantages are mostly that it's more forgiving rather than actually faster. I have no difficulty stepping the M7 but stepping the carbon mast is very noticeably easier.

Originally posted by ian.r.mcdonald

My Osprey tin mast is still competitive inland against the carbon. 

And not having to fret about varnishing against UV is good. 

But perhaps the option of carbon repair rather alloy replacement may keep some older boats away from insurance write off?

Some Blaze sailors prefer the M7 and it doesn't seem slower than the carbon stick. I agree about varnishing too.
Spice 346 "Flat Broke"
Blaze 671 "supersonic soap dish"
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