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 Setting up a trailer for a C25 SK		  New Topic  Topic Locked
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LakeFall
1st Mate

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USA
37 Posts
Initially Posted - 10/25/2017 :  09:17:04  Show Profile
I just bought a boat from one of the guys here on the forum. I found a like-new trailer several months ago that was made for another brand of 25' swing keel. How should I go about re-rigging this trailer? Can it be done with the trailer in the water and boat floating over it? If so, can someone with a trailered SK give me the dimension from the center of the two axles to the bow stop? That would at least help me get the right weight distribution. Could I also get the dimension from the center of the axles to the keel support crossmember? I suppose I could pay a yard to do this but where is the fun in that?!

dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 10/25/2017 :  10:09:22  Show Profile
On my C-25 fin keel trailer, the swing keel came to rest on top of the rear axle, so I would think that on a swing keel trailer, where the boat is lower to the frame but in a similar position front-to-back, it might be a few inches farther back. Bear in mind, however, that the keel does flair out slightly at the bottom, so more of the keel's weight will be at or behind the rear axle, so you do not want it to be too far back. Check the photo galleries for pictures of a swing keel on the trailer.
DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
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Stinkpotter
Master Marine Consultant

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Djibouti
9013 Posts
Response Posted - 10/25/2017 :  10:12:52  Show Profile
I have no answers for you--just want to make sure you're aware (as you probably are) that the keel should be lowered onto the support after the boat is loaded onto the trailer. The hull should never be supported by the swing keel. So the keel support should be positioned so as the boat is loaded, the raised keel doesn't contact it. Just checking--this can be "life-or-death" for a swing-keeler.
Dave Bristle
Association "Port Captain" for Mystic/Stonington CT
PO of 1985 C-25 SR/FK #5032 Passage, USCG "sixpack" (expired),
Now on Eastern 27 $+!nkp*+ Sarge
Edited by - Stinkpotter on 10/25/2017 10:17:01
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 10/25/2017 :  10:31:40  Show Profile
You did not mention whether the trailer has rollers or bunks. That might make a difference. In another picture that I saw in the gallery, the front of the swing keel was about a foot in front of the forward axle. You need to remember also that the keel weighs about 1,500 lbs.
Make sure the bow is snug into the bow stop and the keel is at least 3" above the keel support board before you start to lower it.
I had pads on my trailer and found it necessary to secure the middle of a 3/8" x 50' line to the winch stand, run each half back to the genoa winches and winch them very tight to keep the boat from sliding backward as we came out of the water. It did help and took some of the load off of the bow eye.
Good luck with your project.
DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
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LakeFall
1st Mate

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USA
37 Posts
Response Posted - 10/25/2017 :  10:40:14  Show Profile
quote:
Originally posted by dmpilc

You did not mention whether the trailer has rollers or bunks. That might make a difference. In another picture that I saw in the gallery, the front of the swing keel was about a foot in front of the forward axle. You need to remember also that the keel weighs about 1,500 lbs.
Make sure the bow is snug into the bow stop and the keel is at least 3" above the keel support board before you start to lower it.
I had pads on my trailer and found it necessary to secure the middle of a 3/8" x 50' line to the winch stand, run each half back to the genoa winches and winch them very tight to keep the boat from sliding backward as we came out of the water. It did help and took some of the load off of the bow eye.
Good luck with your project.


It is a bunk trailer. Im not sure what the "curve" of the bunks should be. I guess the higher the bunk the better (to keep weight of hull off keel).
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WesAllen
Navigator

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USA
222 Posts
Response Posted - 10/25/2017 :  11:07:21  Show Profile
My trailer was made by Loadmaster for a C25. I measure 157 inches from the bow eye to the center of front axle. I don't rely on the bow eye to hold the boat. I use a 2 inch strap across the bow and rear to hold the boat and stiffen the trailer. Tows very well. I trailer it from Michigan to Cape Coral, Fl. every year. Float on bunks and keel drops about an inch after loaded. Wish it was little more but works as is. Hope this helps.

Wes
Wesley Allen
"Breaking Wind"
1982 C-25 SR/TR/SK #2773
Hemlock, MI
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LakeFall
1st Mate

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USA
37 Posts
Response Posted - 10/25/2017 :  11:38:23  Show Profile
quote:
Originally posted by WesAllen

My trailer was made by Loadmaster for a C25. I measure 157 inches from the bow eye to the center of front axle. I don't rely on the bow eye to hold the boat. I use a 2 inch strap across the bow and rear to hold the boat and stiffen the trailer. Tows very well. I trailer it from Michigan to Cape Coral, Fl. every year. Float on bunks and keel drops about an inch after loaded. Wish it was little more but works as is. Hope this helps.

Wes

This is extremely helpful, thank you. Would you also be able to tell me the dimension behind the center of the axles to the end of the bunk? I have 64" and not sure if that is enough support.
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islander
Master Marine Consultant

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USA
3992 Posts
Response Posted - 10/25/2017 :  12:37:42  Show Profile
Best way is to have the boat in slings. Then the boat can be lowered or lifted as needed to make your adjustments to the bunks etc. Avoids headaches and costly mistakes.
Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


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WesAllen
Navigator

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USA
222 Posts
Response Posted - 10/25/2017 :  19:45:05  Show Profile

I will try and get a picture with some measurements for you.
Wesley Allen
"Breaking Wind"
1982 C-25 SR/TR/SK #2773
Hemlock, MI
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Dave5041
Former Mainsheet Editor

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USA
3754 Posts
Response Posted - 10/26/2017 :  12:49:05  Show Profile
The crossmember support was immediately aft of the rear axle on my old trailer. A variety of other trailer pics are in my Pearl's Bits and Pieces album, but no dimensions.

Dave B. aboard Pearl
1982 TR/SK/Trad. #3399
Lake Erie/Florida Panhandle
Edited by - Dave5041 on 10/26/2017 12:55:35
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WesAllen
Navigator

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USA
222 Posts
Response Posted - 10/27/2017 :  12:28:00  Show Profile
Here are some pics of my bunks. Just tell me where to measure.


Click to View Full Sized Image
Wesley Allen
"Breaking Wind"
1982 C-25 SR/TR/SK #2773
Hemlock, MI
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Akenumber
Navigator

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USA
247 Posts
Response Posted - 11/10/2017 :  18:25:32  Show Profile
I know this is slightly different, but I bought a what ever trailer for my fin keel .. it was highly adjustable and i made it work. It took a lot of trips in and out of the ramp with micro adjustments and great success. It is heavily marked for future use. Available for future use.
Ken
San Diego
84 C25 SR/FK 4116
The KRAKEN
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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.