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    Posted: 20 Aug 07 at 6:11pm

My answer to k_kirk would probably be, "much higher number", since its a boat designed for 2.  Being a hairy boat will capsise a lot in strong winds and will not sail at all well in light winds since the hull was designed for planning.

This might be an appropriate time to start a thread on the relative performance factors of length, weight, sail area and gennaker - so that's what I'll do.

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Post Options Post Options   Quote k_kirk Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 07 at 5:51pm
Originally posted by JimC

New numbers are issued every spring.

If a boat isn't being sailed in its standard config, eg singlehanded, then yes, a different PY number should be allocated. With the Mirror,and maybe some other classes, this happens often enough for there to be an official PY number for the alternate config.

Thanks for that information. So that means all 2007 and Q1/08 results will define the way PY will shift (if at all) from Spring 08. Understood.

standard vs solo PY. I was looking at the RYA csv file earlier tonight and saw this for the Laser Pico for instance. There is a separate listing but it specifies main only in solo config so PY is almost the same. Anyways, 29erXX is not even there in standard config let alone solo.

For what its worth, if 29erXX PY is 850 sailed in standard config with 140kg between crew & helm, what would you reckon the PY would be sailed solo with 90kg lard on the wire?

Thanks for all the information.


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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 07 at 4:34pm
Originally posted by Scooby_simon

  So you can also get a PY dropping for a boat if the skill level in the fleet is low. 

It *might* happen, but the clubs are supposed to allow for that.

New numbers are issued every spring.

If a boat isn't being sailed in its standard config, eg singlehanded, then yes, a different PY number should be allocated. With the Mirror,and maybe some other classes, this happens often enough for there to be an official PY number for the alternate config.


Edited by JimC
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Post Options Post Options   Quote k_kirk Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 07 at 3:54pm
Thanks for that clarification. I understand well now. How often are the numbers updated then? Once or twice a year?
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Post Options Post Options   Quote Scooby_simon Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 07 at 2:42pm

Originally posted by k_kirk


On this note, would the PY change if a boat meant for two is being solo'ed? In other words is PY based on the theoretical speed of a particular boat at its optimum crew weight & number or is it speed + a certain element of handicap recognizing the challenge? Thanks for educating me on this point. Cheers.

 

PY is based on returns madfe by clubs.  If you get a boat that wins everything, it's PY will get faster, if you get a boat coming last in everything it's PY will get slower.  PY measures the performance of the boat and includes the performance of those sailing the boat.  So you can also get a PY dropping for a boat if the skill level in the fleet is low. 

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Post Options Post Options   Quote k_kirk Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 07 at 2:29pm
Originally posted by 29er397

When i sailed the XX (prototype i believe, but essentially the same boat) it seemed very quick upwind and down. But i really doubt it was faster than the RS800. Just from my own opinion i reckon 850 is a realistic figure. Although, i havn't seen any provisional PY's anywhere.


I have seen it recorded with a PY of 850 in a number of recent events. Ie http://rutlandsc.co.uk/results/2007/040207_TigerTrophy.htm . Anyone know if this is now the official number for the 29erXX?

On this note, would the PY change if a boat meant for two is being solo'ed? In other words is PY based on the theoretical speed of a particular boat at its optimum crew weight & number or is it speed + a certain element of handicap recognizing the challenge? Thanks for educating me on this point. Cheers.
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Post Options Post Options   Quote Granite Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jun 07 at 1:23pm
Originally posted by 29er397


Isn't Phil trying to collate results from last years SSR GP to formulate a more reasonable handicap for the 05 rules boats?




Yup,

I am trying to get some numbers down so that these sorts of arguments can be answered with figures rather than just guesses.

The more results I have the better so if you know anyone who might have race results including timings for races that include Cherub's then please let me know.

What I have so far shows closer to 900 than 975 for 05 boats but with massive variation between boats and between races.

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Post Options Post Options   Quote 29er397 Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jun 07 at 1:05pm

975 spot on? not sure myself. closer to 900 would be better. Or perhaps a split handicap for 2005 rules/old rules boats. Most of the older boats have been converted in to 97 rules rigs by now, if not, 2005 rules. Going by the boats that were at last years nats?

Having sailed a normal 29er against a 2005 rules cherb in various places in various conditions i reckon it should be around 910, comparing speed etc around the course. It is a bit slower than the 9er upwind due to water line length etc, but downwind the cherub makes up its losses and a bit more.

Isn't Phil trying to collate results from last years SSR GP to formulate a more reasonable handicap for the 05 rules boats?

When i sailed the XX (prototype i believe, but essentially the same boat) it seemed very quick upwind and down. But i really doubt it was faster than the RS800. Just from my own opinion i reckon 850 is a realistic figure. Although, i havn't seen any provisional PY's anywhere.

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Post Options Post Options   Quote Merlinboy Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 07 at 10:04pm
i think the cherub handicap is about spot on.
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Post Options Post Options   Quote I luv Wight Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 07 at 9:49pm
Originally posted by Jack Sparrow


You were / are never shy of pronouncing you 6 Cherub Nationals Wins and using that to PR yourself and company Andy...


I haven't for ages, but thanks for mentioning it!

But yes, Cherubs are still very slow in a drift, and there have been too few boats built recently ( which is my fault I suppose ), which makes the PY returns slow to catch up with the real speed increase of the new boats.

What I meant about PR is that each class seemed to say that their class was the fastest, nicest, and best, with no objective comparative reporting.

Edited by I luv Wight

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