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 Catalina 25 Specific Forum
 Difference in wing keels?		  New Topic  Topic Locked
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gop711
1st Mate

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Armenia
83 Posts
Initially Posted - 05/31/2005 :  16:31:20  Show Profile
Could someone explain the differences between an older wing keel, the ones made from 1978-1988 and a newer ones?

In looking at the draft of wing keel as compared to a swing keel, it would appear that there is only about 2" difference in the draft with the keel up on the swing version. If that is the case, would they both be about the same to get on and off a trailer?

Thanks
Greg
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 05/31/2005 :  18:49:04  Show Profile  Visit Frank Hopper's Homepage
When you have a swing you need a couple of inches clearance down to the support board on your trailer. This allows the long keel to float on nicely. You then lower the keel onto the support for trailering. I believe two different wing conversions have mentioned the wing fit on the swing trailer with no adjustments, (after all the wing needs to sit on the support and it does not lower). As for getting it off the trailer, I would guess the angle of the ramp has a lot to do with how soon the wing floats free of the support.
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Dave Laux
Captain

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318 Posts
Response Posted - 05/31/2005 :  19:35:10  Show Profile
We have been trailering one for 5 yrs with no problems. It s about as easy to launch as any shallow keel boat. Dave
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Ben
Master Marine Consultant

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USA
1234 Posts
Response Posted - 05/31/2005 :  20:35:39  Show Profile
I can't really comment on differences between wing keels. I didn't really have to modify my swing keel trailer when I had the wing keel retrofit done. All I had to do was put a long wood block on the swing keel tray. The block is sort of wedge shaped, to allow the keel to rest flat (or flatter) than just a straight piece of wood.

Getting the boat of the trailer is no big deal. Getting it on last season was a bear with the cross breeze. I'm going to build keel guides before I haul out next.
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lcharlot
Master Marine Consultant

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Antigua and Barbuda
1301 Posts
Response Posted - 06/01/2005 :  08:28:45  Show Profile
I think the "OEM" keel for the '86-'87 Mk. III and '88-'90 Mk. IV sticks down a couple of inches further than the "swing-to-wing" conversion keel you see on some Mk. I's and Mk. II's. It's hard to say for sure without having example boats of each kind available and putting them onto the same trailer for comparison. I kept my old trailer that had originally been built for a swing keel 25 (#1205) when I bought my new Mk. IV (#5857). When I first tried to put the new boat on the old trailer, the keel wings hit the cross-members about 1/2 way up. I had to raise the forward rollers 4" and the rear rollers 2". I have since replaced both cross members with new ones cut to the proper shape for the wing keel, which allowed me to lower the roller bunks back to their original positions.
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ronrryan
Admiral

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USA
561 Posts
Response Posted - 06/01/2005 :  22:02:48  Show Profile
As to your initial question, in the earlier years, my impression from data on the site here, is that there were no factory wing keels, they are all retrofits. Then in the late eighties the factory manufactured wing keels appeared. These late models have headroom, due to a dropped floor. Possibly they have a completely different method of keel attachment, similar to a fin keel, I dont know about that, only knowledgeable owners could tell you. The keel rerofit on the early models, according to photographs on this site, SEEM to vary slightly from install-to-install from the nominal keel depth of 2'10" quoted in the CD literature. Fair winds, ron srsk Orion SW FL
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gop711
1st Mate

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Armenia
83 Posts
Response Posted - 06/02/2005 :  08:47:24  Show Profile
Thanks for your replies.

Greg
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.