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 Post subject: Hoisting
PostPosted: Thu May 21, 2020 4:35 pm 
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Site Rank - Deck Hand

Joined: Sun Mar 29, 2020 5:25 pm
Posts: 1
Hello everyone,

I just bought my Tandem Island this year to use at my house. I am storing it in my barn on the floor that faces the lake I live on currently. The problem is that when it is sitting on the floor, installing and removing the cart before and after the lake can be a little awkward. I would like to get it off the floor and hoist it. The problem is the barn has no power. Has anyone lifted a TI using mechanical hoists? What kind of hoist was it? I have seen mechanical hoists that advertise 125lb capacity for kyacks. Think I could use 2 with no problems to the TI?


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 Post subject: Re: Hoisting
PostPosted: Fri May 22, 2020 9:06 am 
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Joined: Tue May 27, 2003 12:44 pm
Posts: 15026
Location: Oceanside, California
You could do it with a trailer winch. That could run to sets of 2 :1 or 3:1 purchase.

My garage hoist, for a smaller kayak (Maui), is 3:1 and I easily hoist that weigh by hand.

This hoist keeps the boat inverted and places the carrying loads on the cockpit side rails just as though on the truck roof rack. This is ideal.

The Hoist: Two overhead pulleys are attached to heavy duty lag hooks threaded into joists. It's a double line system that has two 3:1 purchase blocks below. It has lines passed through scuppers and a pair of dowel cross members (these could be stronger or be of another material), but this works for my Maui. The hoist lines feed to the wall and then down to a pair of cam cleats. I also tie this off for security.

(Drawing / details at the bottom of the post)

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Image
I pull the line through the scuppers (The tail of line hanging down allows me to easily pass the line down through the scuppers and then pull the loops through) and then pass the cross members through the loops. I have also added two "humps" of tape to mark and keep the dowel centered. No knots to tie... just two cross members passed through the loops.

Image
I then simply hoist the kayak up off the roof rack. The load is balanced and stable.
The dowels are what I had on hand and could be stronger, but they worked for proof of concept.

Image

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The double line system is easier to rig and allows you to pull the lines down when setting up to hoist and adjust height independent of the opposite end while hoisting. I had these triple blocks, but note that doubles there is all that is needed.

Image

Boats without single / centered scuppers aft might have to use a beam setup to split the line to both (cart) scuppers.[/quote][/quote]

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Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)


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 Post subject: Re: Hoisting
PostPosted: Fri May 22, 2020 9:07 am 
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Joined: Tue May 27, 2003 12:44 pm
Posts: 15026
Location: Oceanside, California
For the Island, you could get trailer cradles mounted on 2x4s to better support the hull if deck side up.

_________________
Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)


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 Post subject: Re: Hoisting
PostPosted: Sat May 23, 2020 9:00 am 
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Site Rank - Old Salt

Joined: Sun Apr 26, 2015 3:13 pm
Posts: 656
Dirtin wrote:
Hello everyone,

I just bought my Tandem Island this year to use at my house. I am storing it in my barn on the floor that faces the lake I live on currently. The problem is that when it is sitting on the floor, installing and removing the cart before and after the lake can be a little awkward. I would like to get it off the floor and hoist it. The problem is the barn has no power. Has anyone lifted a TI using mechanical hoists? What kind of hoist was it? I have seen mechanical hoists that advertise 125lb capacity for kyacks. Think I could use 2 with no problems to the TI?


I use a pair of these hoists. They're rated for 600 pounds each. You need to come up with your own straps but straps can be found online.


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 Post subject: Re: Hoisting
PostPosted: Fri May 29, 2020 7:55 pm 
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Joined: Fri May 29, 2020 7:35 pm
Posts: 2
I use a pair of these hoists. They're rated for 600 pounds each. You need to come up with your own straps but straps can be found online.[/quote]


I’m a noobie. Can you attach some pics? Thanks


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 Post subject: Re: Hoisting
PostPosted: Sun May 31, 2020 5:23 am 
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Joined: Sun Apr 26, 2015 3:13 pm
Posts: 656
Sparty wrote:
I’m a noobie. Can you attach some pics? Thanks

Sure, I'll try to take some photos today.

It's not difficult. You simply securely hang a hoist on a ceiling or other beam spaced at each end of the TI where you wish to attach the straps. When you hang the hoist, be sure to use a method that will safely support considerably more than the weight of the TI. This will be dependant upon where you install them. They must be very secure. Attach only to a sturdy metal or wood beam capable of holding at least 500 lbs.

Then, while the TI is on the trailer, vehicle, ground, whatever, you attach a sturdy strap, of whatever kind you prefer, to the hoist. I suggest these straps at a length of 12' with an end hardware selection changed to Safety S-Hooks (see the Ratchet Strap End Hardware selection section), but you can select whatever strap works best for you. Ensure that each strap is capable of holding at least 500 lbs. for extra safety.

Then, in the case of these specific hoists, you alternately raise each end a few feet at a time until the TI is at the height you want. The hoist will self-lock and hold the TI until you release them. To lower, simply lower each end a few feet at a time.

Of course, anything heavy suspended in the air requires safety considerations should something go wrong. When I hang my TI for the winter, I also suspend it with additional straps. This will prevent it from falling should the hoist or any single strap fail. I used these straps at a length of 12' (adjustable) for additional support, but you can spec any strap that works for your specific application. This also helps distribute the weight so you don't get any hull deformation. Wide straps work best.

Edit - Photos as promised:
Image
Image


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