Just a little exercise I did with some recent results of a club race.
"Sail to your PHRF #"
According to PHRF;
J-92 PHRF = 111 Pearson 26 PHRF 222
J-92 in light air 3600/(111+600) = 5.06kts PHRF's predicted average speed for light air
P-26 in light air 3600/(222+600) = 4.37kts PHRF's predicted average speed for light air
kt = knots; ktm = nautical miles
J-92 covered 4.5ktm in 2 hrs & 7 minutes or 2.17 hrs
4.5/2.17 = averaging 2.125 kts
P-26 covered 4.5 ktm in 2 hrs & 21 minutes
4.5/2.35hrs averaging 1.914 kts
J-92 5.06 - 2.12 = 3.04 ( predicted speed - actual speed)
P-26 4.37 - 1.91 = 2.46 ( predicted speed - actual speed)
The Pearson 26 sailed closer to what PHRF predicted he should sail in light air then the J-92.
Therefor the P-26 wins !!!!!
Roy
Note:
For medium air replace 600 with 550
For heavy air replace 600 with 480
neither boat sailed even close to what PHRF predicts.
This posting should probably be under Racing ....
"Sail to your PHRF #"
According to PHRF;
J-92 PHRF = 111 Pearson 26 PHRF 222
J-92 in light air 3600/(111+600) = 5.06kts PHRF's predicted average speed for light air
P-26 in light air 3600/(222+600) = 4.37kts PHRF's predicted average speed for light air
kt = knots; ktm = nautical miles
J-92 covered 4.5ktm in 2 hrs & 7 minutes or 2.17 hrs
4.5/2.17 = averaging 2.125 kts
P-26 covered 4.5 ktm in 2 hrs & 21 minutes
4.5/2.35hrs averaging 1.914 kts
J-92 5.06 - 2.12 = 3.04 ( predicted speed - actual speed)
P-26 4.37 - 1.91 = 2.46 ( predicted speed - actual speed)
The Pearson 26 sailed closer to what PHRF predicted he should sail in light air then the J-92.
Therefor the P-26 wins !!!!!
Roy
Note:
For medium air replace 600 with 550
For heavy air replace 600 with 480
neither boat sailed even close to what PHRF predicts.
This posting should probably be under Racing ....