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A new class of dinghy?

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JimC View Drop Down
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    Posted: 06 Oct 18 at 7:41am
Spence was a genius... How the hell he managed to get something so boat shaped with such limiting constraints like a constant chine angle is beyond me...
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Sam.Spoons View Drop Down
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Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 18 at 7:32am
Since I'm not likely ever to get the chance to sail one I will refrain from commenting except to say it does look better than PDR
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Post Options Post Options   Quote RossV Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 18 at 10:57pm
Originally posted by Sam.Spoons

TBF I wasn't being entirely serious. TBH there are probably a few boats that could achieve 1 and 3 but none that I can think of that could achieve 1 and 2 with any reasonable degree of success in the same design...... I suspect all three are not possible in the same boat, and definitely not if you add :- 4, rewarding to sail.....
Was it Storer that designed the Goat Island Skiff? I always thought that looked promising

John Spencer's Firebug does, partly because it sets 50% more sail than other 8 footers aimed at juniors. It may not be the ultimate answer but I can confidently atest to the fact that an 8 footer does plane and that carrying 85kg.

https://youtu.be/t66qxBDaD4A

This (southern) winter we have built two at our club with boys from local high schools.
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Sam.Spoons View Drop Down
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Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 18 at 10:09pm
TBF I wasn't being entirely serious. TBH there are probably a few boats that could achieve 1 and 3 but none that I can think of that could achieve 1 and 2 with any reasonable degree of success in the same design...... I suspect all three are not possible in the same boat, and definitely not if you add :- 4, rewarding to sail.....

Was it Storer that designed the Goat Island Skiff? I always thought that looked promising
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Post Options Post Options   Quote RossV Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 18 at 8:57pm
Sam Spoons, thank you for that. Have you tried sailing one?

An old bloke arrived at our club with the brand new Pdracer he had built for his grand kids. He wanted somebody to try it out before he presented it to them. I was the bunny who was deputised. It was the absolute worst design I have experienced in 60 years of dinghy sailing.

The mast was so heavy that the boat rolled like a demented pendulum. It had that strange rig with which Storer designed the PDR - a luff down to the forward tank blocking a large sector of visibility completely and the fixed rudder meant you had to drag the thing out into waist deep water before you could install it.

Storer used to sail at our club "before my time" and I am very interested in his later designs including Beth and Viola but neither meets the storage criteria I identified and both require scarf joints which would test a novice. A PDR with the lug rig and a pivoting or dagger rudder might be a different experience but for now I am very doubtful about the original version.
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Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 18 at 2:01pm
Such a boat already exists https://www.pdracer.com
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Post Options Post Options   Quote RossV Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 18 at 1:50pm
An interesting thread. Many of the clubs in my part of the world are in dire straits - Kids do a year or two in Optimists and move on to something else before they achieve competence leaving a declining fleet and aging leadership group.

The need that dinghy sailing has above all others is to engage people in sailing and to keep them. Instead of dreaming up marginally faster and trickier boats we need boats that address the needs of people who live in flats and are worried about launching their careers, or their childrens'.

To address those 'customer' needs we need boats which are (1) short enough to stand on their transoms in the garage and leave space for a car (2) have adequate performance, ie plane carrying an adult and (3) allow young people to build their boats and thus write on their skinny CVs "sport = sailing, hobby = boat building - I sail the boat I built."

To quote one of our local house builders, "If a kid finishes his boat and wants an apprenticeship, send him to me..." That kind of affirmation will keep people interested long enough to take on the identity of sailor and once they identify as sailors, they will stay sailors.
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Post Options Post Options   Quote Daniel Holman Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 18 at 5:55am
Prepregs are widely used out of autoclave ie under normal vac. Some systems cure at 65 deg making the demands on tooling and heating quite low, ie almost democratising pre preg!
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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: 04 Oct 18 at 12:21am
Originally posted by H2

KazRob - disagree about "in our life times". I am 45 so have at least 30 years more sailing in front of me. Wind the world back 30 years.....quite a bit has changed so I am fairly sure that it will be possible in the foreseeable future.

On the other hand, if we go back that 30 years we see that there were already plenty of carbon/Nomex hulls around, and that still seems to be pretty leading-edge today. I've got a carbon/kevlar windsurfer from '82/3 in my shed.  So in some respects there hasn't been much change in that time.
  
Apparently there are some developments that will make pre-preg easier to use without an autoclave, but even if that occurs one wonders how big a change it will be. Carbon composite will still probably be vulnerable to knocks and bangs.

Arguably there's a diminishing return in materials technology. The Tasar, for example, is already pretty light and if you take 12kg out of it you gain a few yards downwind in marginal planing conditions, but it's not as if it transforms the boat. In cats we were fervent followers of the lightweight school until we got a cheap old Hobie 20 and now a Formula 18 and we find that concept of tougher, cheaper hulls is actually quite attractive.



Edited by Chris 249 - 04 Oct 18 at 12:32am
sailcraftblog.wordpress.com

The history and design of the racing dinghy.
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Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 03 Oct 18 at 7:23pm
Originally posted by Daniel Holman



Blimey, another one who could benefit from a slice of rump and a knob snog.
You offering?

You were lucky I didn't really kick off and mention the shoebox int gutter.

Edited by iGRF - 03 Oct 18 at 7:24pm
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