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Catalina/Capri 25/250 Sailor's Forums

Catalina 250 Specific Forum

How to put my 250 on jack stands

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gerardolau
1st Mate

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78 Posts

Initially Posted - 08/31/2015 : 19:50:29

Hello, can anyone help me with suggestions or a video would be great on how to remove my boat off its trailer? Need to service the trailer and bottom paint my boat. I need to put it on jack stands but im having my doubts on how to do it..
Thanks

Thanks
Gerardo
1995 C250 WB
#115

mdidomenico
1st Mate

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71 Posts

Response Posted - 09/01/2015 : 05:29:43

on youtube there is a video from "tips from a shipwright" that shows pulling a boat of a trailer in his backyard. he doesn't use a catalina, it's a power boat, but the theory is the same

gerardolau
1st Mate

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78 Posts

Response Posted - 09/02/2015 : 19:45:05

Yep, seen that video but the catalina is way heavier and jack stands do not pull up the boat.. I dont know i mean. I might make a hole throught the boat if I apply too much pressure.. I guess i mean I dunno.. Hasnt anybody done this? Or you get it done at a marina with a crane?

Thanks
Gerardo
1995 C250 WB
#115

delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts

Response Posted - 09/03/2015 : 10:16:29

I've lifted my boat on jacks before to paint under the pads, but never gotten it completely off the trailer. The front and midships lift went reasonably well, but the rears scared me. The fiberglass started groaning and creaking in ways that didn't encourage me to continue. I managed to soda blast under them to get the old paint off, but I didn't even bother trying to paint any of the pad points. Fortunately the paint I chose has enough anti-growth that the 6 pad points have barely any growth on them even after several years in the water.

I think what you want to do could be done if you slowly blocked the hull up with jacks with a custom built cradle to hold it in the same place you'd sling it from, but it'd have to be wide enough to accommodate the width of the trailer, and now you're getting into lever arm calculations to make sure your cradle is strong enough when it's spanning the entire hull. Every time I think about this I talk myself back out of it.

The other method would be to move the trailer out in increments so you could jack up the boat along it's centerline leaving room for the tires to move forward while the blocking clears the trailer below. I've seen a YouTube video on how to do this method, but with a much smaller boat.

If you do decide to do this, please take lots of pictures!

David
C-250 Mainsheet Editor

Sirius Lepak
1997 C-250 WK TR #271 --Seattle area Port Captain --

gerardolau
1st Mate

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78 Posts

Response Posted - 09/04/2015 : 18:21:47

Thanks for the advise. Im thinkin of using a cradle in the front of the boat, wide enough to pull out the trailer and a couple of hydraulic jacks to lift the rear., If I see it too risky i will not continue. The trailer needs maintenance as well, brakes, wheels, etc.. It is also not so good for the boat to be sittin on the trailer for so long without moving.. Tires go flat..
I will jack it up with seven stands, one in the front, four in the mid section and two at the aft.. Plus the swing keel will have wood blocks to sit on.. Someone at catalina direct told me the swing keel or keel usually carries 60-80% of the boats weight when its off its trailer the rest is done by the jacks.. So, wish me luck..
I will try to videotape it and let you know..

Thanks
Gerardo
1995 C250 WB
#115

gerardolau
1st Mate

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78 Posts

Response Posted - 09/04/2015 : 18:29:59

The other method would be to move the trailer out in increments so you could jack up the boat along it's centerline leaving room for the tires to move forward while the blocking clears the trailer below. I've seen a YouTube video on how to do this method, but with a much smaller boat.

*** I thought of doing this, but do u think the fiberglass mid section along the centerline of the boat is strong enough to stand the pressure of the jack and to be able to be lifted?
By the way its a Centerboard** not swing keel with waterballast system

Thanks
Gerardo
1995 C250 WB
#115

Stinkpotter
Master Marine Consultant

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Djibouti
9076 Posts

Response Posted - 09/06/2015 : 12:20:08

quote:
Originally posted by gerardolau

...Someone at catalina direct told me the swing keel or keel usually carries 60-80% of the boats weight when its off its trailer the rest is done by the jacks..

I am suspicious the Catalina Direct person thought you were talking about a C-25 (because of the term "swing keel"), and if so, was even more wrong. The best way to damage a C-25 is to set it down on the raised swing keel so the keel is supporting any of the hull's weight. It is the fin or wing keel that supports most of the boat's weight. And I seriously doubt the C-250's 100# centerboard is intended to support any of the hull's weight on a trailer or cradle.

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

gerardolau
1st Mate

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78 Posts

Response Posted - 10/04/2015 : 08:01:26

Ok guys this past friday I removed the trailer off from the boat.. It was a pretty easy manuever actually.. Or easier than what I thought it would be. U just have to have the right material to do it.. I will write a new topic with pics for the interested..

Thanks
Gerardo
1995 C250 WB
#115

moserd
Navigator

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USA
149 Posts

Response Posted - 10/05/2015 : 09:31:34

In the past (8 years ago) when I needed to paint the boat my dealer arranged four boat stands, two under the stern and two about at the keel (WK) and we dropped the trailer bunks on ONE side at a time to paint under the bunks. I wish I had photographed the placement; though I had and am still looking. It worked great but when I recently repainted my boat I didn't have the nerve to support the boat without his help (he has since retired) so just did not paint under the bunks.

Don Moser

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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.