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Thread: Hydraulic Boat Jacks

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    Iliketobuild's Avatar
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    Iliketobuild's Tools

    Hydraulic Boat Jacks

    I'm in the process of completing a 31' Lake Michigan cruiser made of 5086 marine grade aluminum. It has been an excellent journey so far requiring numerous extra tools that I had to make for the fabrication. One necessity (if you don't have a large crane) is some method of lifting the boat so the trailer can be moved into place for fitting. Since I wanted to build a custom trailer I decided I needed to build the jacks to lift the boat. Commercial jacks are quite expensive, and rightly so, there is a lot of work and expense to make them. I figured I could fabricate a set which was a compilation of the best commercial designs. The pictures below are the jacks I built. I've substantially increased the thickness and size of some of the members to make them sturdier. The main post is 3 1/2" X 3 1/2" steel tube, 1/4" wall. The bases are 3/4" steel plate. The hydraulic jack boxes are 1/4 steel tig welded for strength. The rollers which ride along the support posts are 1 1/2" steel with bronze oilite bushings inside for bearings. Each jack is equipped with an 8 ton long stroke hydraulic jack from Northern Tool. The jacks have worked flawlessly, easily picking up a 7,000 boat like it wasn't even there. I had the jack assemblies hot dip galvanized to make them weather resistant in case they had to be left outside. All in, I built them for about a third of the cost of commercial models.

    Hydraulic Boat Jacks-20151207_105210.jpg


    Hydraulic Boat Jacks-20151207_120503.jpg

  2. The Following 5 Users Say Thank You to Iliketobuild For This Useful Post:

    Frank S (08-14-2018), Jon (12-15-2015), kbalch (12-15-2015), Paul Jones (12-15-2015), rossbotics (08-16-2018)

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    kbalch's Avatar
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    Those jacks look great! Really well-made and obviously up to the task. We'll get them added to the site shortly.

    As a boat homebuilder, you might be interested in perusing our companion site BoatBuilds.net - lots of great projects and ideas in there…

    Have you got a website for the project? I'd love to follow along with your progress.

    Ken

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    Iliketobuild's Avatar
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    Iliketobuild's Tools
    Ken, not sure if the last message was sent. I don't have a website but I do have lots of build pictures. Am going to be installing the windows and electrical work this spring.

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    Jon
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    Was going to mention BoatBuilds.net too. Three boat tools posted today; well done sir!

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    Thanks Iliketobuild! We've added your Hydraulic Boat Jack to our Jacks and Lifts category, as well as to your builder page: Iliketobuild's Homemade Tools. Your receipt:


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    Mr. Ililetobuild do you have the plans of your jack for sale? Iím interested.


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  8. The Following User Says Thank You to Ironman777 For This Useful Post:

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