Crane/Lift for Re-engining on the Hard

[ShinyShoe]

How does the new engine get delivered?

 

[Old Bumbulum]

Oh, well. He should wait until he gets launched again, methinks.

So how do I change the shaft and prop? And how does a crane get a better (any at all) access to the boat on a wobbly pontoon (30 tons of crane???) than on the hard?

 

[Old Bumbulum]

One of our club members put a new engine in his boat today using the gantry that we use for moving the boats. He used a cheap ratchet hoist ( from ebay) to lift the engine off the truck with the hoist suspented off the cross beam & got the engine over the guardrail onto the side deck. then re positioned the gantry & swung the engine down the hatch.
Scaffold towers ( hired)each side with a couple of scaffold poles across etc.If you hook it over a scaffold pole with a piece of chain you can slide it sideways( metal to metal) to get it to the hatchway having lifted it up alongside the boat. To stop the pole bending strutit with a bit of 4*2 with a fork cut in it. I buy scaffold poles( thick walled) for about £1 per ft so a 20 ft one would add £20 if you cannot beg one for a day.
You really only need the tower one side . The other side could be 2 short poles fitted as an "A" with a swivel clip & another clip to hold the horizontal one ---or 2 bits of 4*2 bolted & lashed

Hoist

This is the way I'm thinking now - thanks.

 

[Boathook]

My marina has no crane and the local hire company wants £300 to remove the old engine and same again to put in the new one - using a monstrous 20ton crane.
I'm struggling to find anything like a mini crane and spider cranes seem very scarce around here . (Lowestoft area)

It only needs to get 160Kg 4m up amd not as much as 3m across...anyone got any bright ideas?

Using the boom is not really an option due to the layout of the boat.

Why isn't the boom an option? I did many years ago see some pictures of an engine being lifted out by use of a boom and it had to be done in stages with the e fine resting on planks whilst pulleys etc were put in different positions.

 

[LittleSister]

A quick Google search suggests there are several Lowestoft firms offering Hiabs. That would presumably be rather cheaper than a 30 ton crane.

 

[Daverw]

Often a crane or hiab can cost about the same, in my day job we do lifts all the time. Trying to arrange a quick local lift is hard even when you know people as many are not able to just pop around unless owner drivers which seem to be few nowadays.

 

[Iliade]

I made a wooden A-frame to lift my ~120kg launch onto (& off) the roof of my T5. Cost about £100... V2 used the legs of said A-frame to make a ramp up which to pull the dinghy. Both worked fine.

I would use the A-frame to secure a longitudinal beam to mimic a boom to allow sliding the motor fore and aft.

Bought A-frames tend to have wheels.

search eBay for old garage kit but I expect you need just too much height for cheap used kit.

 

[DownWest]

Why isn't the boom an option?.

Cos Old Bumb says not. In his shoes I might use a wooden pole with 'gaff jaws' to go against the mast, as a boom subtitute. Then double up the halyards and use the ratchet winch. Then easy to swing out over the rail and down.

 

[dgadee]

So how do I change the shaft and prop? And how does a crane get a better (any at all) access to the boat on a wobbly pontoon (30 tons of crane???) than on the hard?

Ha! You didn't say you needed to do a re-shaft. Some might say that you should have put more thought into all of this before you were lifted, rather the complaining about the quality of advice you are getting after the event. Planning, planning, planning ...

You could have had the engines lifted out and in from a trailer beside the lift (as I did) at a more functional marina and then gone back to your more problematic one. If a friend towed you over and back you would only have had the cost of the other marina's crane/boat lift.