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Fastest dinghy?
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Lucy Lee View Drop Down
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Posts: 276 		Post Options Post Options   Quote Lucy Lee Quote  Post ReplyReply Direct Link To This Post Topic: Fastest dinghy?
    Posted: 30 Sep 04 at 3:16pm
Well now, Weymouth Speed Week  is coming up very soon. Apparently it costs about £50 to enter for the day so if anyone can get the day off...
Fly Cherub!
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Doctor Clifford View Drop Down
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two hulls good, one hull bad !!!!!
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Granite View Drop Down
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Posts: 476 		Post Options Post Options   Quote Granite Quote  Post ReplyReply Direct Link To This Post Posted: 30 Sep 04 at 1:30pm

The foiling Moths could probably have a good go at it
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Matt Jackson View Drop Down
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Posts: 962 		Post Options Post Options   Quote Matt Jackson Quote  Post ReplyReply Direct Link To This Post Posted: 30 Sep 04 at 12:21pm

Originally posted by JimC

...could mean that the boats capable of the highest top speed are not what you might expect. My guess would be that Cherubs and 29ers have got to be in the frame.

Not that you're biased at all Jim

Laser 203001, Harrier (H+) 36
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Phil eltringham View Drop Down
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Posts: 1105 		Post Options Post Options   Quote Phil eltringham Quote  Post ReplyReply Direct Link To This Post Posted: 30 Sep 04 at 10:38am

I think you are right, its the same reason why windsurfers held a lot of speed records not that long ago.  It was simply because they could go out in far windier conditions than a dinghy and so despite being less efficient could reach higher speeds. 

Also on the plane with the asymmetric up the speed differences will not be too large, suffice to say that all of the classes you mentioned have probably hit the better side of 25 knots but keeping that held over a 500m course is unlikely.  

It would be quite cool to have in a boat test, problem is you cant draw a comparrison unless every test is done in the same conditions and I doubt that people like RS and Laser will have done full speed polar plots for their designs, let alone make them public. 

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JimC View Drop Down
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Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 30 Sep 04 at 10:09am
I know of no boats that have been timed properly over a 500m course, which is what counts. Lots of people make lots of noise, mostly based around rough estimates or maybe peak speeds under GPS.

The very fastest boats are going to be those that combine modern hull shapes and very light weight with moderate sail area, because dinghies are not efficient enough to achieve high wind speed/boat speed ratios, so its going to take a fair bit of wind. If you've got very big rags you just aren't going to be able to carry anough apparent to get a decent speed in 25knots plus.

That could mean that the boats capable of the highest top speed are not what you might expect. My guess would be that Cherubs and 29ers have got to be in the frame. I reckon that the sails on the 14s and 49er are just too big for really high speed in a lot of wind, no matter how fast they are in the moderate stuff.

My guesstimate is that a 500m average figure in the low 20s ought to be achievable fairly readily, but I don't know how much higher. Its so dependant on wind and wave condtions though.
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AlanWT View Drop Down
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Posts: 1 		Post Options Post Options   Quote AlanWT Quote  Post ReplyReply Direct Link To This Post Posted: 30 Sep 04 at 9:05am

Just been reading an old book about dinghy racing, and it refers to a Jollyboat being timed at over 17 knots at (I think) Edgbaston Reservoir in the '50s or '60s.

Timed outright speed isn't something that appears in modern boat reviews, but I'm sure that the modern style of lightweight dinghies with their high power to weight ratios must be able to beat that figure.

Anyone know for sure? - what is the fastest current or recent production monohull dinghy?

Could be a bit of fun to be had finding out!

Alan
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