SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > Welcome to Sailnet > Introduce Yourself > How Can I Lift My 21-Foot Sailboat Off Its Trailer?
 Not a Member? 

Introduce Yourself Welcome to the Sailnet.com - The world's largest online sailing community! Tell us about yourself so we can get to know you.


Thread: How Can I Lift My 21-Foot Sailboat Off Its Trailer? Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
09-01-2012 05:23 PM
fryewe
Re: How Can I Lift My 21-Foot Sailboat Off Its Trailer?

Marc:

Try this--
First inflate your tires to max pressure.
Then raise the boat with the tongue jack and block up the bow of the boat.
Lower the tongue jack. That will lower the trailer and put the boat on the blocks. Lower the forward end of the trailer to the maximum extent you can using the tongue jack (raising the stern of the boat as high as possible while on the trailer). Note that this will pivot the boat about the point it is resting on the forward blocks so you need to ensure it is stable and side supports are adequate. At this point block up the stern. Finally raise the tongue jack to the halfway raised position (this lowers the trailer out from under the stern and puts the stern on the blocks) and deflate your tires to lower the trailer overall a couple of inches. Pull the trailer out from under the boat.

You will need to install angled supports (boat stands preferred) as you do this to keep the boat from tipping if you are blocking with a single stack. If you block with two stacks (one on each side of the boat with a spanning beam) you may be able to fashion a vee on the beam at its centerpoint to hold the boat stable laterally.

If you can gain access for the work you want to do simply by raising the boat and leaving the trailer in place you can use the tongue jack to alternately raise and lower the bow and stern to work on either end of the underhull if you only need a few inches clearance to work.
08-31-2012 01:59 PM
knothead
Re: How Can I Lift My 21-Foot Sailboat Off Its Trailer?

Quote:
Originally Posted by FishDragon View Post
Hi - Newbie Sailor Here...

I have a 1972 MacGreggor Venture 21 currently in a slip - but come mid-October, I'm going to put it on its trailer for the winter. As I want to work on the keel over the winter (it has a swing-keel), I'm wondering if anyone can tell me how I might be able to lift it off the trailer and put it on blocks (by myself). Because I'm not wealthy, I'm hoping there's a way I can use wood beams and jacks, or SOMETHING to accomplish this.

Thank you in advance for any advice, information or suggestions.
Marc
Marc, you will need a bottle jack, an assortment of wood blocks. 4x4s 6x6s etc. And some stands. At least four. Two per side. Three per side is better.

What you do is jack up the boat and block the keel, fore and aft, just behind the crossbeams or axles of the trailer. Brace the boat with stands until the trailer is free. You will have to adjust the stands up as you jack the boat. Be sure to keep the boat from leaning to one side or the other. Then move the trailer up until the next cross beam is up against the blocks.
Then repeat. Block the boat on the other side of the beam or axle and move the trailer as far as you can.
After repeating this a few times, you boat will be sitting on blocks and supported by stands.
It's a simple process. Just be careful.
I've done this on fairly large boats working by myself.
08-31-2012 01:47 PM
therapy23
Re: How Can I Lift My 21-Foot Sailboat Off Its Trailer?

I have used a large oak tree, two slings and a automotive chain hoist.
08-31-2012 04:04 AM
rgscpat
Re: How Can I Lift My 21-Foot Sailboat Off Its Trailer?

A technique that I like:
Find a friend who has a fixed-keel sailboat about the same size as your swing keel boat.
Borrow your friend's big tall keelboat trailer to temporarily haul out your boat. It helps if the keelboat trailer has adjustable-height support pads.
Now you should be able to lower your swing centerboard/keel at least most of the way.
And you don't have to pay hundreds of dollars to put your boat in a boatyard hoist or brave the dangers of a do-it-yourself lifting frame.
08-30-2012 11:17 PM
SlowButSteady
Re: How Can I Lift My 21-Foot Sailboat Off Its Trailer?

A Venture 21 only displaces 1200 pounds. Rigging up some sort of frame and lifting it with a come-a-long should be easy enough, if you know what you're doing; and there's the rub. If you have to ask, you probably don't know how to rig such a set-up. In your case it is probably best to find a friend (e.g., a mechanical engineer, or some-such) who can help you in person. Following someone's instructions over the InterNet is bound to get you into trouble (as in CRUSHED) in an endeavor like this.
08-30-2012 10:28 PM
FishDragon
How Can I Lift My 21-Foot Sailboat Off Its Trailer?

Hi - Newbie Sailor Here...

I have a 1972 MacGreggor Venture 21 currently in a slip - but come mid-October, I'm going to put it on its trailer for the winter. As I want to work on the keel over the winter (it has a swing-keel), I'm wondering if anyone can tell me how I might be able to lift it off the trailer and put it on blocks (by myself). Because I'm not wealthy, I'm hoping there's a way I can use wood beams and jacks, or SOMETHING to accomplish this.

Thank you in advance for any advice, information or suggestions.
Marc

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 04:01 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.