Thank you Gentlemen,
Thats just what I wanted to hear I'll use the KISS and the "May adjust by one second"
Dave Vinnell
sailwave@yahoogroups.com wrote:
<
< Hi Mike
< Let's just say that it was developed by a mathematician 
<
< The reason for the formula is obviously valid but whilst the solution to the problem is no doubt
< very sound (I am not a mathematician) it is a minor issue when we look at the bigger shortcomings of
< the overall PY scheme.
<
< Suggest you keep this one under your hat & hope the fast boat sailors in your club don't get sight
< of it
<
<
< Regards
< Ralph
<
<
<
< -----Original Message-----
< From: Mike Croker [mailto:mdcroker@which.net]
< Sent: 10 June 2005 09:26
< To: sailwave@yahoogroups.com
< Subject: Re: [sailwave] Average Lap Racing
<
<
< 'Blimey Dave, hadn't spotted this one before! Where do they dream them
< up from?
<
< Surely:
<
< * if a boat with the same PN does fewer laps it's been sailed badly
< o or worse than the one that does more - if we accept the PN
< handicapping concept
< o or the conditions didn't suit it (in the case of different
< types of boat with the same PN)
< * the only reason a boat with the same PN does more laps yet ends up
< with a worse corrected average lap time is that the wind died on
< it's last lap (typical evening race)
< * equally for races starting before noon the wind could have risen
<
< As this got as far as the PY manual I clearly have misunderstood this
< one - anyone close to the RYA Technical Committee care to enlighten me 
<
< Mike Croker
< Lancing SC
< West Sussex
<
<
<
···
< davenow@eircom.net wrote:
<
< >Good Morning All,
< >I'm scoring a Multihull event with a single handicap fleet.
< >The fast boats will do 3 to 4 laps of the course and the slower ones 2 to 3.
< >I've used the laps on sailwave before and it all works well. But any suggeations of an easy way to
< implement the adjustment as recommended in the RYA document on Average Lap Racing shown below, or
< will I have to just do it by hand.
< >Regards
< >Dave Vinnell
< >Galway Bay sailing Club
< >
< >"When boats with the same PN complete different numbers of laps, those sailing fewer laps may have
< average times less than those sailing more laps. In such a case the �Same PN Adjustment� shown below
< should be applied. The adjustment increases proportionally the times of those boats sailing fewer
< laps.
< >
< >The same PN Adjustment should be applied if a boat�s corrected time is greater than others with the
< same PN which have completed fewer laps. The adjustment is applied only to the group of boats with
< that PN. Boats completing one lap fewer than the leading boat in the group will have their Corrected
< Times adjusted thus:
< >
< >Modified Time = Corrected Time x Multiplier
< >
< >Multiplier = Slowest x (Fastest Laps -1)
< >
< >About-to-Finish Time x Fastest Laps
< >
< >where:
< >
< >Fastest Laps is Actual Laps completed by the fastest boat in the group
< >
< >Slowest is the Elapsed Time of the slowest boat, in the group, to
< >
< >complete Fastest Laps
< >
< >
< >
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