Allocating PY Numbers

   Should race management teams stick to recomended RYA PY's for boats for 

which they have no previous data at their club?

For example, should a boat with a 3 blade fixed prop be given the 2% 

allowance suggested by the RYA over a boat of the same design (but not a 

strict one design) or be forced to give time to the boat with the 2 bladed 

prop to make working out the results easier for therace control?

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Paul Wells Send Private Message Find Member's Posts Visit Member's Homepage Newbie Joined: 02 Mar 07 Location: Cowes, United Kingdom Online Status: Offline Posts: 2	Post Options Post Reply Quote Paul Wells Report Post Quote Reply Topic: Allocating PY Numbers Posted: 01 Jun 07 at 11:14am
	Should race management teams stick to recomended RYA PY's for boats for which they have no previous data at their club? For example, should a boat with a 3 blade fixed prop be given the 2% allowance suggested by the RYA over a boat of the same design (but not a strict one design) or be forced to give time to the boat with the 2 bladed prop to make working out the results easier for therace control?
	I work to sail!

craiggo Send Private Message Find Member's Posts Really should get out more Joined: 01 Apr 04 Location: United Kingdom Online Status: Offline Posts: 1810	Post Options Post Reply Quote craiggo Report Post Quote Reply Posted: 01 Jun 07 at 5:59pm
	Paul, I've had similar thoughts on this one for a while now, but since I found the Byron system, I have just insisted that members get a Byron number. http://byronsoftware.org Simply get your members to fill in all the details and they will be sent back a number for their boat FREE. The system uses a bit of maths and the primary PY numbers to determine the numbers for a given set of measurements. Over the winter I trialled both the Byron numbers against PY including following the RYA specimen race methods and by the end of the series the numbers I had were pretty much the same as the Byron numbers. Pretty much all of the cruiser racing clubs on the Bristol Channel are now using Byron. Give it a go ! Paul

Paul Wells Send Private Message Find Member's Posts Visit Member's Homepage Newbie Joined: 02 Mar 07 Location: Cowes, United Kingdom Online Status: Offline Posts: 2	Post Options Post Reply Quote Paul Wells Report Post Quote Reply Posted: 04 Jun 07 at 1:16pm
	Hi Craiggo Thanks for that will take a look. Paul
	I work to sail!