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Joined: Oct 2012
Posts: 5
J
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Hi all,

I just bought #189 and am looking for a main to replace the one that probably came with the boat. I found a J29 main that still might be for sale. Just wondering if there are any potential issues. I think mine has slugs in the mast and a bolt rope in the boom. Has anybody else used a J29 main on a 30?

Jeff

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Joined: Oct 2009
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I have. It must have had a short hoist though because the J29FR main has a larger hoist than the J/30 by 6 inches or so I believe.

Joined: Apr 2000
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J/30 P = 38' (distance between bands at top of mast and goose neck)
J/29 Masthead P = 38.8'
J/29 Fractional P = 35'

J/30 E = 13' (distance between bands on the boom)
J/29 Masthead E = 12'
J/29 Fractional E = 13'

Masthead luff will be too long, foot too short. Fractional luff will be too short though the foot is just right

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J
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Very helpful - thanks guys

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Past J/30 Class President
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Jeff - depending how soon you want a main, you may want to wait for the off season as some people will probably sell J/30 sails. It is very likely I will sell my J/30 race main if I decide buy a new one for the NAs next July. I'm just starting to get quotes from sail makers now.

Joined: Oct 2009
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Originally Posted by Bob Rutsch
J/30 P = 38' (distance between bands at top of mast and goose neck)
J/29 Masthead P = 38.8'
J/29 Fractional P = 35'

J/30 E = 13' (distance between bands on the boom)
J/29 Masthead E = 12'
J/29 Fractional E = 13'

Masthead luff will be too long, foot too short. Fractional luff will be too short though the foot is just right

Your P values are mixed up. J/29 fractional has a larger hoist than the masthead version.
J/29FR = 38.8
J/29MH = 35.0

The fractional main is the one you want as it will require less modification (6" off the hoist).

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J
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Originally Posted by NaturalHigh
Originally Posted by Bob Rutsch
J/30 P = 38' (distance between bands at top of mast and goose neck)
J/29 Masthead P = 38.8'
J/29 Fractional P = 35'

J/30 E = 13' (distance between bands on the boom)
J/29 Masthead E = 12'
J/29 Fractional E = 13'

Masthead luff will be too long, foot too short. Fractional luff will be too short though the foot is just right

Your P values are mixed up. J/29 fractional has a larger hoist than the masthead version.
J/29FR = 38.8
J/29MH = 35.0

The fractional main is the one you want as it will require less modification (6" off the hoist).


The main I was looking at was from a masthead, so sounds like I should wait to see what folks want to sell after the nationals.

Joined: Apr 2000
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Sorry about the mixup, here's the source:
J/29 Specs


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