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Forums28
Topics3,983
Posts19,061
Members1,018
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Most Online238 Feb 9th, 2024
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Re: Class Rules & #1 Genoa Size Limits
[Re: zeppo]
#11341
03/15/11 07:06 PM
03/15/11 07:06 PM
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Joined: May 2007
Posts: 2,668 Portsmouth, RI
Rhapsody #348
OP
Past J/30 Class President
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OP
Past J/30 Class President
Joined: May 2007
Posts: 2,668
Portsmouth, RI
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From the Class Rules. These are the only specified dimensions in paragraphs 5.12.2.2, 5.12.2.3 and 5.12.2.4. The luff and foot are implied by geometry. Para 5.10.2 has the measurement band on the outer end of the boom at 13 feet. Refer to the ISAF Sail Measurement Guide on how to interpret. Mid Point Leach to Luff 2621mm which converts to 8 Ft 7.2 in Leach 12395mm which converts to 40 Ft 8.0 in Max Headboard Extended from Mast 158mm which converts to 6.2 in If you look at the J/30 Mast drawing at the bottom of the J/30 Specifications the distance between the upper and lower measurement band on the mast (P dimension) is 11582mm which converts to 38 ft
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Re: Class Rules & #1 Genoa Size Limits
[Re: Rhapsody #348]
#11375
03/23/11 07:43 AM
03/23/11 07:43 AM
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Joined: Jan 2010
Posts: 45 Key West, & Charlotte, NC
lumpy
Senior Member
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Senior Member
Joined: Jan 2010
Posts: 45
Key West, & Charlotte, NC
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There certainly has been a lot of discussion with regard to the J-30 ODR modifications to keep the boat relevant with regard to improved technology in sail materials, and to be more competitive in PHRF. Does anyone remember when you could go to any number of sailmakers and they would list J-30 in their pricing packages for ODR sails? I have noticed that the J-30 has been dropped from virtually all the sailmaker websites that list OD boats, the sole exception is Doyle. Should that tell us something? With the exception of 2 or 3 areas which around the country J-30 ODR seems to have greatly diminished. Of the 500 or so J-30s built how many race PHRF on a routine basis vs ODR? If you are sailboat racer you want to win; racing in a configuration(ODR) that generates rating penalty certainly doesn't help. Should we consider modifying the ODR to align to PHRF (155%, J length pole& spinnaker, sail materials?) Early on the ODR rule has a 170% as the Genoa, it was changed to a 163%, we have modified the materials for the head sails from Dacron to laminates. Should we consider moving the ODR to adapt to PHRF? It could enhance the participation in PHRF and J-30 one design racing.
LUMPY
Scott Davis Night Nurse #363
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Re: Class Rules & #1 Genoa Size Limits
[Re: NaturalHigh]
#11383
03/24/11 06:50 AM
03/24/11 06:50 AM
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Joined: Jan 2010
Posts: 45 Key West, & Charlotte, NC
lumpy
Senior Member
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Senior Member
Joined: Jan 2010
Posts: 45
Key West, & Charlotte, NC
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The #1 used to be a 170 and was changed to the 163. Theoretically that made the boat slower. Asymmetricals will theoretically make the boat faster. I am suggesting that the class rules should be looked at to reflect the reality of what configurations people are using, and not make the ODR irrelevant to the majority of J-30 owners. This could help increase participation in J-30 racing.
Scott Davis Night Nurse #363
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Re: Class Rules & #1 Genoa Size Limits
[Re: Rhapsody #348]
#11385
03/24/11 09:06 AM
03/24/11 09:06 AM
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Joined: Apr 2007
Posts: 493 Chicago, Il. USA
D. Bartley
Governor at Large
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Governor at Large
Joined: Apr 2007
Posts: 493
Chicago, Il. USA
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Lumpy,
If the class were to adopt PHRF standards... allow any material in any sail, use J length pole and chute, make the #1 a 155, would you have any more J/30s coming out to race in Charlotte, or Key West? Would you travel to Annapolis, New Orleans, Long Island Sound, or Narraganset bay for the North Americans?
Dennis Bartley Planxty, s/n 23994 hull 205
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Re: Class Rules & #1 Genoa Size Limits
[Re: Rhapsody #348]
#11391
03/24/11 11:32 AM
03/24/11 11:32 AM
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Joined: Apr 2007
Posts: 493 Chicago, Il. USA
D. Bartley
Governor at Large
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Governor at Large
Joined: Apr 2007
Posts: 493
Chicago, Il. USA
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Many years ago (when there still was a J/30 Class in the Chicago NOOD), one of the guys from Detroit brought his boat down. He only had a Kevlar 155, but we agreed that he'd sail level with the rest of us. I believe this was still before the class allowed kevlar, so we had a mylar class legal sail. My observation was that in a straight line, he was probably just as fast as we were, but accelerating out of a tack, we were a tad better off. If memory serves, winds were 12-15ish, reasonably flat water.
Dennis Bartley Planxty, s/n 23994 hull 205
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