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Sailing Speed Record

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Iain C View Drop Down
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Post Options Post Options   Quote Iain C Quote  Post ReplyReply Direct Link To This Post Topic: Sailing Speed Record
    Posted: 08 May 07 at 11:49am

Andy

Simon and I thought we'd cracked 32 knots in the Daemon the other day.  It felt INCREDIBLY quick, and it was blowing it's nuts off, and we were two "heavy winds optimised" sailors sailing a boat designed for Olympic girls.  So in order to make sure it was not a spike, we screamed back uphill again, and popped the kite for a second run.  We nudged the speed 0.5 of a knot higher.  It felt just so goddam quick.  We really had convinced ourselves we'd done it, until we realised that the GPS was set to km/h, not knots.  We suddenly flet a bit daft as from convincing ourselves we'd done it, we realised hust how far of the mark we really were.

31 knots is stupidly fast.  The Avon Seariders I drive with a 60hp outboard on the back will not do anything like 31 knots, 1 up, in flat water, with a clean hull and me fiddling about with the trim to the nth degree whilst hiding behind the binnacle to keep the drag down.  It will manage low 20s.  If you are chasing a quick boat at that speed it seems gobsmacking just how hard you seem to have to push the RIB to keep up.

Don't get me wrong, 20knots is ber-luddy fast, I've done that in a Cherub and have the GPS track to prove it.  To then be overtaken by something else doing 11 knots more just seems ridiculous!! Sorry!!! 

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andy_cherub View Drop Down
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Post Options Post Options   Quote andy_cherub Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 07 at 12:02pm

Iain, believe me, or dont - im not that fussed. Its a personal record - I no longer have the speed track, but like I said - I want to beat it again! For that ill prob use the new velocitk jobby and get all the plots. When I did it the big 30ft ribs at weymouth were trying to chase me and the OD was watching in ore!! It felt fast, it felt SO fast I cant explain!! & I know even without looking at the GPS when sailing I havent ever gone that fast before in my life - nor have I come close to it since. & yes - it was in knots!  

But if you can get a windsurfer to do around 40 knots again and again, why cant a flat boat, sailed flat in dead flat water do it  its ok Iain, you will soon get some fast speeds in you new machine! As I hope to aswell!

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Post Options Post Options   Quote combat wombat Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 07 at 1:41pm

31 knots must be a spike.  Open 60's occasionally get close to that (current Ecover record is around 32 knots).  Only big cats and tri's will consistently record speeds in the 30's.  Volvo 70's could spike speeds like that in the Southern Ocean but cannot reliably average it.  Even ORMA 60's have to have water ballast, canting rigs and curved lifting foils to reliably reach the 30's.

Dinghies aren't the best weapons for top speeds, they are too draggy and heavy to max out any records.  It is incredibly difficult to reach over 20 (49ers rarely reach it) and beyond that it becomes exponentially harder to get quicker due to the law of diminishing returns and all that. 

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Post Options Post Options   Quote Scooby_simon Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 07 at 2:16pm
Originally posted by turnturtle

Originally posted by combat wombat

It is incredibly difficult to reach over 20

totally agree!

 

Agreed; I can get plenty of plots around the 18 or 19 mark, faster than they gets difficult; Might see what I get this next week at the F16 Nations cup as it looks like it will be windy ! (but we are doing uphill/downhill only ! )

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JimC View Drop Down
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 07 at 10:42pm
The best weapon for max speed in a dinghy was probably a 97 rules Cherub. The 2005 rigs IMHO are too big and too low aspect ratio for max speed. Round the track vmg is an entirely diferent affair with quite different requirements.
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NickA View Drop Down
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Post Options Post Options   Quote NickA Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 07 at 11:22pm

Don't know about the fortrex and velocitek, but my pda based gps has a settable sample rate.  Set to 10s intervals you get plenty lower speeds than when set to 1s intervals. 

Those speed records are averaged over quite long periods.  (50knots over 500m = 0.27nm => 19.4s).

I don't disbelieve Andy, just presume he didn't sustain it for very long (no inuendo intended, honest )



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andy_cherub View Drop Down
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Post Options Post Options   Quote andy_cherub Quote  Post ReplyReply Direct Link To This Post Posted: 09 May 07 at 2:17pm

HI NickA - When the GPS was mounted on the boat on the odd look over it was reading a steady 28,29 odd knots - so the 31 was the max and most likely not a constant! But what was constant was the sheer F**kin speed!!

Yes, the boat was a 97 rules twin wire beast! with a fairly flat kite & like Jim said, in general a 97 rules cherub was SO fast in the strong stuff, espec one designed for it!!

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Post Options Post Options   Quote Black no sugar Quote  Post ReplyReply Direct Link To This Post Posted: 09 May 07 at 2:46pm

LOL LOL LOL LOL LOL

 

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andy_cherub View Drop Down
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Post Options Post Options   Quote andy_cherub Quote  Post ReplyReply Direct Link To This Post Posted: 09 May 07 at 2:54pm

HAHA!

Like I said dude, i really dont care if you dont believe me or not - next time it happens (I SOOO hope it does) Ill have the full gps track, and hopefully on video too!

For the mean time - WOOO 12ft skiff sailing cant be beaten!! & mate, since being back in plymouth havent even capsized!!  must not be trying hard enough!!

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Post Options Post Options   Quote aardvark_issues Quote  Post ReplyReply Direct Link To This Post Posted: 09 May 07 at 3:35pm
Originally posted by andy_cherub

Yes, the boat was a 97 rules twin wire beast! with a fairly flat kite & like Jim said, in general a 97 rules cherub was SO fast in the strong stuff, espec one designed for it!!



Why did you sell it then? Like going slower do you?
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