Thank you all for your answers to my questions yesterday.
The one that is still stumping me is how to make our PHRF
time-on-time
handicapping work.
Does anyone have a file with Custom rating that I could look at to
figure out what I'm doing wrong?
Can you give me any hints for why I'm having trouble getting the e=
and r= formulae to be consistent? (Besides having problems with
algebra, I mean.) Is it necessary to have them consistent in order
to
get the corrected-time to come out?
My formulae (from PHRF-Lake Ontario) are
c = e * ( 685.411 / ( 514.411 + r))
e = c * (r + 514.411) / 685.411
r = (685.411 * e / c ) - 514.411
Thanks again,
Louise Mallory
Kingston Yacht Club
Havent kept up with all the latest versions but I had a problem withversion 38 doing time on time until i figured out that you dont but in the C= part of the formula >>>just the right hand side of the equation
George F. Goodall
1986 Catalina 30 TRBS
“Frantic”
georgeg305@cox.net
···
----- Original Message -----
From:
louisekyc
To: sailwave@yahoogroups.com
Sent: Tuesday, July 16, 2002 10:45 AM
Subject: [sailwave] Custom rating - any examples?
` Thank you all for your answers to my questions yesterday.
The one that is still stumping me is how to make our PHRF
time-on-time
handicapping work.
Does anyone have a file with Custom rating that I could look at to
figure out what I’m doing wrong?
Can you give me any hints for why I’m having trouble getting the e=
and r= formulae to be consistent? (Besides having problems with
algebra, I mean.) Is it necessary to have them consistent in order
to
get the corrected-time to come out?
My formulae (from PHRF-Lake Ontario) are
c = e * ( 685.411 / ( 514.411 + r))
e = c * (r + 514.411) / 685.411
r = (685.411 * e / c ) - 514.411
Thanks again,
Louise Mallory
Kingston Yacht Club
`
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c = e * ( 685.411 / ( 514.411 + r))
e = c * (r + 514.411) / 685.411
r = (685.411 * e / c ) - 514.411
Wouldn't r be:-
r = (685.411*e - 514.411*c)/c
Send me the series (the .blw file) if you're still having trouble...
CJ
www.sailwave.com
colin@sailwave.com
···
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