I have a Prindle 18-2 hull with no mast or sails. It is unlikely I will find a P18-2 mast here in Hawaii, but there is one P19 mast that I know of, so I have a few questions:
1) It seems they are the same cross-section because the mast bases are the same for both boats at Murrays.com. Is it possible to shorten a P19 mast so that it will fit a P18-2?
2) If I cut off the appropriate amount at the top of the P19 mast do I need to reposition the hounds for the P18-2?
3) Would the cut down P19 mast weigh the same as a true P18-2 mast?
4) Anyone ever done this before?
Wicked questions eh?
Thanks
Barry
Is it possible to shorten a P19 mast so it can be used on a P18-2?
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Posted: Apr 27, 2011 - 05:01 PM
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Posted: Apr 27, 2011 - 06:00 PM
Sounds iffy, but the critical measurement would be the height of the mast hound (so shrouds fit), and overall height (so main will hook). If you can get the measurement for a 18-2 mast you can figure out if you can get the same height with the 19 mast by trimming either/both ends of the extrusion.
It looks like the mast head casting and the mast hound factory parts are the same for the two masts, so it looks like you have a chance.
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Damon Linkous
1992 Hobie 18
Memphis, TN
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Posted: Apr 27, 2011 - 08:43 PM
If you can find a P18 mast, it will fit perfectly.
Thats because the P18-2 is a P18 on symetrical
hulls instead of the slab side assymetrical hulls.
The P18 rig was transferred in its entirety to the new
hulls creating the P18-2. -
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Posted: Apr 27, 2011 - 09:08 PM
Really? Are you certain of that, because I have seen some posts somewhere agreeing, and others disagreeing. But still its hard to find them here in Hawaii.
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barrylay
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Posted: Apr 28, 2011 - 06:24 AM
I am certain. The only difference was the addition
of the 4-way jib traveller adjustment system.
Go to the Performance Catamarans Website,
view the manual for the P18 and then look at
the manual for the P18-2/P19. They even used
the same pictures. -
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Posted: Apr 28, 2011 - 06:44 PM
NAAAA the 18-2 does not have assymetrical hulls but has centerbaords like a P19. I "think" it did have 4way jib cars. Take a pic of the mast ball /step and post it. I'll do likewise for a P19. I think you could shorten the p19 mast - off the top, and make it work. The 18-2 was a real preformer but had less hull vol then the 19 and it carried less sail. -
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Posted: Apr 28, 2011 - 07:58 PM
As far as the mast goes, all Prindle and Nacra masts of that era were the same cross section, just make sure you cut it straight!
D.
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Dave Bonin
1981 Nacra 5.2 "Lucile"
1986 Nacra 5.7 "Belle"
Winnipeg, Manitoba, Canada
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Posted: Apr 29, 2011 - 04:16 AM
The P18 mast is a perfect fit for the P18-2. I have done this swap when I owned both boats. The P19 mast is the same extrusion and can be cut down to fit. Make sure to measure the location of the mast hound and cut material from both top and bottom if necessary. Drill the rivets, remove the castings, cut square and replace both castings. Use lots of silicone caulking on the castings to reseal the mast.
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