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Forums28
Topics3,984
Posts19,069
Members1,019
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Most Online238 Feb 9th, 2024
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Re: Rudder Modifications
#2741
03/31/02 12:04 PM
03/31/02 12:04 PM
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Joined: Mar 2001
Posts: 24 Montague,PE,Canada,C0A 1R0
Clive Johnston
Senior Member
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Senior Member
Joined: Mar 2001
Posts: 24
Montague,PE,Canada,C0A 1R0
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I modified my rudder a few years ago. When I first got the boat I couldn`t believe the weatherhelm especially on a reach.I cut a piece out of the front top section just above the water line and reglassed the section. This put the leading edge of rudder just even with the front of the hinge pins.Doing this made the top section of rudder look a bit narrow, so i built up the slanted section on the upper aft section of rudder and it now appears to be the same shape as origional except for the leading edge below the pintles being forward,If you can send me a fax number I could send you a diagram.No other J30 here but of the 4 J29`s, only one has the balanced rudder.The helm is much better now. Regards,Clive Johnston.
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Re: Rudder Modifications
#2742
04/01/02 01:13 PM
04/01/02 01:13 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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Ahh,
Rather than cut up your rudder, (which decreases the value of the boat) why not trim the sails to decrease weather helm. A J/30 with the right combination of sail trim, sail area and crew weight, does not have excessive weather helm and can be sailed flat in most (but not all) conditions.
Don't modify your rudder - trim the sails.
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Re: Rudder Modifications
#2743
04/01/02 07:39 PM
04/01/02 07:39 PM
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Joined: Feb 2010
Posts: 24 Ventura, CA
Pangea
Senior Member
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Senior Member
Joined: Feb 2010
Posts: 24
Ventura, CA
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Weather helm is not the issue, it is the heavy helm that is the problem. I have a near nuetral helm going to weather, but broad reaching in even moderate swells is a two handed job. And I plan on modifying an "extra" rudder to maintain the class value Originally posted by Dr. Sailtrim: Ahh,
Rather than cut up your rudder, (which decreases the value of the boat) why not trim the sails to decrease weather helm. A J/30 with the right combination of sail trim, sail area and crew weight, does not have excessive weather helm and can be sailed flat in most (but not all) conditions.
Don't modify your rudder - trim the sails.
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Re: Rudder Modifications
#2746
04/08/02 11:23 AM
04/08/02 11:23 AM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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This weekend, during a 15 mile race, we had winds of 15-20 on a beam reach. We put up the 100% blade and un-reefed main. The blade was barber-hauled to a pad eye on the rail. Only two abord. We were making steady 7.5's with 8 knots not uncommon. No heavy helm.
Don't modify your rudder - trim the sails.
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Re: Rudder Modifications
#2747
04/08/02 02:00 PM
04/08/02 02:00 PM
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Joined: Mar 2000
Posts: 173 Arnold, MD
Joe Ruzzi
Senior Member
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Senior Member
Joined: Mar 2000
Posts: 173
Arnold, MD
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While I agree with some of your post, I don't think it's the whole story. By definition, the J/30 has an unbalanced rudder. Sail trim can _help_ the situation, but it cannot take care of it entirely. If you were racing one-design on the Chesapeake Bay, I can guarantee you that in 15-20 kts true, about three-fourths of the fleet would be flying their 163% genoa, a couple of folks would have their kevlar blade up, and maybe one person would be sailing their 140%. The helm would be loaded up significantly, no ifs, ands or buts! I do think that if one were to re-design the J/30's rudder with a more modern design, it would move the center of resistance closer to the axis of the pintles. This is what J/Boats has done with their newer designs, like the J/80.
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