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Scooby_simon View Drop Down
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    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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Posts: 172 		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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JimC View Drop Down
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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.


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k_kirk View Drop Down
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Posts: 172 		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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Posts: 1502 		Post Options Post Options   Quote redback Quote  Post ReplyReply Direct Link To This Post 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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