Lifting 5.4 Tornado off trailer

Bigmuz7 · 26 January 2011, 18:20

I want to sort out the rollers on my trailer and want to lift the boat off, and place it in the corner of my shop whilst I undertake repairs, currently the tubes are flat, theres only a central jockey on her and a YAM 75, I have loads of webbing straps, about 5" wide I can put under the hull and plenty of power to lift her off, should I pump up the tubes first ?, or will they deform too much ... or would it put too much strain on the edges of the hull when I lift if I didnt ?

Worst case I could push it off, but that involves faffing about with loads of protection on the concrete floor .. I dont have any lifting spreader bars or anything, but plenty of height , so the straps wont be pulled together when the load comes on.

What do you guys think ?

Vandad · 26 January 2011, 18:29

This rib should not be too heavy to push, I did push my Humber 5m on the floor once! What you should do is to put a carpet (buy some thick carpets before pushing the boat) and then you can even move the boat in your shop easily without damaging the hull.

I would not inflate the tubes...

Jizm · 26 January 2011, 18:31

Why not build acouple of wooden trestles/bunks to put her on while she's off the trailer?

C-NUMB · 26 January 2011, 18:47

I had some time a go a similar problem, to get the SR of the trailer.
I built this" http://rib.net/forum/showthread.php?...ghlight=cradle ", did not take long time. Can be used again case needed.

I used only the trailer winch and elbow grease to get here of the trailer and on to the "cradle". Fastened the stern with a rope and "dragged "the trailer away to keep it in position on the cradle when sliding down from the trailer. With one or two helping hand don't think rope is needed.

Would keep air in the tubes, guess the hull is stiffer that way?

Mollers · 26 January 2011, 18:55

I used to lift the 6.5m off with of 5t ratchet straps and a trolley jack under the planing pad.

martini · 26 January 2011, 19:03

Quote:

Originally Posted by Mollers

I used to lift the 6.5m off with of 5t ratchet straps and a trolley jack under the planing pad.

Lol where there's a will there's a way

Mollers · 26 January 2011, 19:04

Quote:

Originally Posted by martini

Lol where there's a will there's a way

Cornish stylie.

ribraff · 26 January 2011, 20:17

Can you not use the winch and put it down on to some tyres? Pull the strap right out, around the axle and back up to the bow eye and winch away. If the rollers are OK you can drop it on to some tyres, it's easiest to have the trailer on the tow hitch if possible.

Bigmuz7 · 26 January 2011, 22:05

Quote:

Originally Posted by ribraff

If the rollers are OK you can drop it on to some tyres, it's easiest to have the trailer on the tow hitch if possible.

Thats the problem its the rollers , or their retaining washers that are the problem, I only just got it back on last time

Quote:

Originally Posted by Mollers

I used to lift the 6.5m off with of 5t ratchet straps and a trolley jack under the planing pad.

Arr.... I hope thy Agric shed builder factored in a 6m RIB when designing the roof/support loading

Dont worry chaps It'll come off one way or t'other, just didnt want to crush the hull at a weak point at the sides

, dont think theres that much weight in it anyway but it aint a new boat, and the glass might be a bit more brittle at the edges

Mollers · 26 January 2011, 22:07

Quote:

Originally Posted by Bigmuz7

Arr.... I hope thy Agric shed builder factored in a 6m RIB when designing the roof/support loading

Snow loading I think they call it.

ashbypower · 26 January 2011, 22:09

Why not rig the straps with a spreader, to reduce the angle fron the flange and lifting point on whatever your lifting with.. leave the tubes deflated ,

Pikey Dave · 26 January 2011, 23:10

I have a couple of eyebolts set into the concrete floor behind the boat, to get the boat off the trailer I attach ratchet straps to the towing eyes on the stern & to the eyebolts & slowly pull the trailer out from under the boat. As the trailer pulls forward I chock up the hull on timbers behind the trailer. Getting the boat back on is basically a reversal of the operation. Use the winch to pull the trailer back under, removing the chocks as you go. Simples!!

9D280 · 27 January 2011, 09:50

Quote:

Originally Posted by ribraff

Can you not use the winch and put it down on to some tyres?

Wot I did.

Granted my hull at the time was covered in a 4" thick multiple layers of antifoul (slight exaggeration, but you get the picture!

) so I wasnlt too concerned about what it landed on. Next time I would use carpet. (A/F now removed & it's all shiny & polished)

On a more helpful note, there will be a point where the whole trailer will tip back, at which point you put the capet / tyres / foam / whatever under the transom, and that is the time to get a couple of tyres / blocks of wood under the hull to stop it tipping. Then as described in the previous posts.

To get it back on, the first bit is a pain, as you need to either lift the bow onto the rollers or lift the hitch to drop the rollers to the bow. Then use one hand to hold the trailer nose up, winch with the other (no real winch load at this point). Once you can't turn the winch with one hand above your head (!

) the riollers should have properly engaged with the hull, and you may find the weight of the trailer will flatten it out and lift the bow clear of the ground. Then it's a simpkle case of winching with due caution.

Spreader bar - I built one from wood for my open trailer to prevent the sides getting bent in when I carried stuff that needed weird ratchet strap angles. Bit of sizeable timber, and use a couple of ply offcuts to create "jaws" to locate the spreader on the stap.

bosun · 27 January 2011, 18:48

We tip ribs off on to car tyres all the time,just put three or four tyres in a row,tip the trailer up so that the bottom of the transom sits in the furthest one then give the boat a shove and keeping the trailer lifted pay the winch strap out as she slides off,if the rollers are shot then get a couple of guys to lift her as you pull the trailer out,put the rest of the tyres in place as you go,most of the weight is in the engine anyway.
I can do this to a 5m humber with a 70 on my own so its more to do with technique than strength.
Important to keep the winch strap on and pay it out slowly or it will go with a rush and then you can hurt yourself.

Dr Doof · 28 January 2011, 22:47

Seen this on ebay earlier.

Don't know if it would be any good for what you want to do?
http://cgi.ebay.co.uk/Rib-Boat-Stand...#ht_500wt_1156