Flipping boat stand

[jusfloatin]

Good day to all.
I am just getting the grarage set up for my winter project, it is a 1959 Thunderhawk Sr. The boat requires a considerable amount of work on both the bottom and the top.
I was thinking of fabricating a boat stand that could flip the the boat 360 if needed. I was thinking of something like a engine stand except 2 of them connected together. With one attached to the bow and one to the transom.

My only concerns is where the bow loop/d-ring is would it be able to support the weight, I would remove the d-ring and make something more suited to my needs. The boat does have wood glassed in where the ring is to support the d-ring.
Bottom line I guess is would I rip the front of the boat out if I was to do this.
I would be supporting the boat once flipped by the usual way with wood supports.
Thanks to all and have a good one.

 

[i386]

Re: Flipping boat stand

I flipped mine by attaching a chain hoist to a stainless steel eye bolt installed where the bow eye goes and a loop of rope passed through the drain hole tied in a figure 8 knot. Mine's a 15 footer. I guess it really depends on the size of the boat.

 

[tashasdaddy]

Re: Flipping boat stand

don't suggest it. people have been coming up with ways. i think QC, came up with a pretty good system.

 

[TheWoodCrafter]

Re: Flipping boat stand

Here is how Oops did his and how I did mine.
http://forums.iboats.com/showthread.php?t=250239&highlight=flip+hull

 

[jusfloatin]

Re: Flipping boat stand

Thanks WC
I have been watching that thread for some time and it is responsible for this project being undertakin in the first place.
My idea was and is so that it could be flipped with by two people or even just one person. I would be hooking to the same spots as what Ooops did except the boat would be hard mounted to the stands.

i386 It is a 16' boat with wings and red lights.

 

[i386]

Re: Flipping boat stand

I guess I did it pretty much the same way Oops! did.

http://forums.iboats.com/showthread.php?t=177052&page=4

I was able to do this pretty easily by myself. Boat restoration is expensive enough so I didn't want to spend any money on building something I would have no use for after I was done.

 

[109jb]

Re: Flipping boat stand

They do it all the time on car restorations. I have a 1970 Ford Mustang on a rotisserie in my barn right now. The one I have I built myself, but you can buy them too. Don't have a picture of mine handy, but this one will give you the idea. I can turn my car with by myself all I want and when properly set up it will stay at any angle.

 

[jusfloatin]

Re: Flipping boat stand

109jb That is close to what I have in mind except for the wheels as I would be happy just to have it flip.

 

[Mark42]

Re: Flipping boat stand

Two large loops of rope around the boat and hanging from pulley's mounted to the ceiling should let you rotate the boat by pulling the rope loops. As the rope travels in a circle, the boat should rotate, kind of like cloths in a dryer. May have to clamp/attach the rope to the hull at one point to keep the rope from slipping around the hull, or just wrap the loop around the boat once before it goes back up to the ceiling. The weight of the boat will cause the rope to squeeze the hull and not slip around it.

Hang the pullies by two come-alongs or block and tackle to lift the boat off the stands/trailer. Once in the air, one person should be able to rotate it easily.

Don't forget to spread the load across the ceiling joists. Attaching 2x10's to the joists with lag bolts will help spread the load across multiple joists.

 

[109jb]

Re: Flipping boat stand

109jb That is close to what I have in mind except for the wheels as I would be happy just to have it flip.

For car restoration they are great because they allow positioning at any angle for grinding, cutting, welding, etc. I rotate the car I'm restoring quite often. However, in thinking about it, is there really a need to rotate a boat that often?? I don't really see any reason that a boat restoration would require the type of frequent rotation that a car does. I can see needing the boat upside down for working on the bottom, and right side up for for everything else, but I can't see that it needs to be anywhere in-between, and it wouldn't need to be done all that often. If planned right, it may only need to be upside down once. Seems like it would be easier to use the other methods for a one time flip.

As for your question about the strength of the bow eye and transom mounts, I can say that they "should" be strong enough. On most boats the bow and transom eyes can be used for lifting the boat. This of course depends on the integrity of the reinforcement of the hull in these areas. If the transom, or the wood reinforcement behind the bow eye are rotted, then all bets are off.