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GRF's rig school

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G.R.F. View Drop Down
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    Posted: 22 Nov 09 at 8:12pm
Since when has it been polite, you rude boys, to discuss someone in the third person when he's obviously here reading it?

Isn't it time someone turned off the dorm lights..



MB more like Miss Piggy..
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Post Options Post Options   Quote Merlinboy Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 8:14pm
My ex- girlfriend looked like Miss Piggy!  Hanging!
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Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 8:57pm
Originally posted by Peaky

Originally posted by G.R.F.


I've also noticed that sail makers and mast makers dont seem to be shall
we say acting enitrely in concert with each other...
So, in short there's a hell of a lot of trial and error going on, and lots of
not entirely efficient rigs. imvho.

What ever else you all think, that part is definately true. Look how many iterations of sails and masts the RS100 has been through.  Hardly seems scientific, even if the end result does work.  It is suprising that there isn't a company that makes masts and sails as an integrated rig supplier.

Wavelength for Contenders?

Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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Chris 249 View Drop Down
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Post Options Post Options   Quote Chris 249 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 9:12pm
Grumpf, my point was about your general remarks, like the following....

"Why dinghy sails are what can we say without being too rude.... lets say they are in transition. ..... I've also noticed that sail makers and mast makers dont seem to be shall we say acting enitrely in concert with each other. No windsurf sail maker
would undertake a new sail without having the bend curve of the mast
described well before he started. Whereas you guys seem to alternate.
And it takes ages, look at the RS100, look at Mike Lyons and his Halo
project it's taking aeons, why? because more often than not neither one
nor the other seem to know what is trying to be achieved in advance.......lots of
not entirely efficient rigs. imvho. ...... where the sail is developed taking windsurf
knowledge on board the rig does tend to look a whole lot better than
where it isn't."

That stuff above, where you are (wrongly) claiming that boat sailors don't try to match mast and sail curve from the start, is where I was contradicting you.

One point that seems to be significant is there doesn't seem to be much evidence that boards have increased their course-racing speed any more than boats have. When the original Windsurfer came out, is was about as quick as a Moth. Now the fastest boards around a course are probably a tad quicker over 8 knots than a Moth, and miles slower in light stuff.  Sure, boards are good in high winds but that is intrinsic in the concept and the fact that many are designed only for high winds, unlike dinghies. And the boards can be pretty user-unfriendly, as we all know from the number of highly-stressed FW masts that snap. So are boats really behind in development?

The basic point is that boat and board designers and sailors deserve respect, not contempt.


Edited by Chris 249
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G.R.F. View Drop Down
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Post Options Post Options   Quote G.R.F. Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 9:22pm
The fact is Chris

Rig makers for windsurfers deliver both the mast and the sail.

I've yet to come across integrated supply of sail and mast from the same
supplier in dinghy world.

And yes I do hold it in contempt, it serves no-ones good purpose, I'm
sure if Mr Devoti, or RS could go to one builder, tell them what they want.

Describe the intended helm weight range and the wind range of the craft
and just order it up, life would be a whole lot more easy for those of us
here who seem to spend an inordinate amount of time waiting for boats
they like.

And even if they have built a sail for a particular mast, the chances of the
sail builder getting it right the 2nd time (And I'm speaking from bitter
experience here of a well known sail brand that should do better)are slim.

Now you may have it better down there with all that forced convict labour,
but up here, it aint happening and any time soon.

Oh and boards v boats? No-ones been driving development since the
Olympic Decision.

Had we not had the credit crunch when we did, I'd had a wild idea of
turning up at the Longboard worlds on a wand controlled foiling
longboard and a guy ready to build it in Weymouth.

Now lets see, had that worked, simply with the 9.5 sail on a foiling long
board, v a Moth with its 8m? I know where I'd put my money.

Edited by G.R.F.
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Post Options Post Options   Quote Stuart O Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 10:13pm

Lots of what GRF saying is accurate to windsurfers. What we must remember is that on the whole a dinghy sail and mast has to operate in a large window. We cannot go back ashore and change the rig and sail because the conditions have changed. Thus compromises are made in both the sail and mast. Those compromises often show up as GRF implies as inefficiences.

GRF dinghy sailors do understand mast bend...the examples here made of the Finns....but we forget about the top laser sailors going thru 100s of top sections to find the one they 'like'

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Post Options Post Options   Quote Mikey 14778 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 10:57pm
GRF (and some of the rest of you),

Without wanting to get tangled up in your increasingly heated argument, can I just observe that it is a fact of
life that if anyone ever suggests that something is not as good as something else, somebody else will leap to
its defence. Usually quite forcefully. Accusations of negativity and other stuff will fly around, and everyone
involved will get pi**ed off by the unreasonable behaviour of the other side.

Personally I am quite happy to accept that masts and sails are not as well made or matched as they might be,
and I suspect that this is true for a majority of dinghies. I would love to know more about the science
surrounding this topic.

If you guys can stick to filling in the details regarding how masts could (in your opinion) be improved rather
than just pointing out how cr*p certain rigs are, maybe I might learn something and maybe a few less people
would be chewing the carpet right now

Edited by Mikey 14778
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G.R.F. View Drop Down
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Post Options Post Options   Quote G.R.F. Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 11:21pm


Well without wishing to rub to much salt in the wound, but this set up is
coming along well...

Correct me if I'm wrong, but isn't that an unstayed rig, loaded and not
distorted, so maybe it is possible..

But then they are involving more of their 'target market' in the design
process, not talking down to us from some Ivory Tower in Southern
Europe whilst virtual bullsh*tting us locally using our own forum, then,
trying to character assassinate anyone who would point out the errors of
their ways...

Now I have no especial love for LDC, but they are at least listening, and
they are at least considering beach launching light folk.

Edited by G.R.F.
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 11:34pm
G.R.F I thought the RS100 had shrouds but no forestay. The shrouds would
stop the mast bending forwards.
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G.R.F. View Drop Down
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Post Options Post Options   Quote G.R.F. Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 09 at 11:38pm
Well I've no idea what they're finally going to settle with, they had two boats
the time I went, one had a forestay the other didn't.

Difficult to tell from the picture, but I can't see any obvious stays there..

Maybe it's the angle..

Where did the spreaders go?

I literally only noticed it a short time ago, all the other shots seem to have
boats with spreaders and shrouds.. But this shot?


Edited by G.R.F.
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