Electric hoists. Can anybody give advice?

[classic33]

 

[slowmotion]

Still in the denial phase then

Any chance of you running your psychiatric qualifications past @User????

 

[slowmotion]

You did get a bit of a grilling there, and I'm afraid I've got a few more questions. 1.8Kn per m2 is almost the same of a general purpose builders scaffolding. I'd be interested to hear how you calculated your joists could carry that as an additional load? I'm not doubting the accuracy, just curious. The one possible useful piece of information I may be able to offer, is a scaffold tube supported at one end only extended to it's maximum 750mm can support a gin wheel capable of carrying 50Kg.

Suppose the hoist imposes a mid-span load of 150 kg on the scaffold pole. The reaction at each end is 75 kg. The party wall takes the load at one end, and the two legs of the A frame take the other 75kg. Let's assume that that there is only one leg, and that it sits at the mid-span of the joist. That's ultra conservative. The joist is C24 45mm by 95mm spanning 1.5 metres. Bending stress-wise, the joist is twice as strong as it needs to be. Let me put it in a common sense way. Will a 2 by 4 spanning five feet take your weight in the middle?

 

[slowmotion]

I suppose so. The only thing that regularly goes in and out of our loft is the Xmas decos. And it's very accessible and I had the floor done for loading. I'm not sure I know what's up there now.

A pitiful tale......

 

[slowmotion]

Polite cough.......anybody know anything about electric hoists? Analysing my fragile mental state might be fun, but I have stuff to move vertically.

 

[slowmotion]

[QUOTE 4920602, member: 76"]Just give it a couple of weeks, until @Drago has completed his transformation and he will nip round and simply toss the 250kgs into the loft hatch [/QUOTE]
He won't need to. His recommendation for lightweight nuclear warheads will make his task far easier.

 

[classic33]

Polite cough.......anybody know anything about electric hoists? Analysing my fragile mental state might be fun, but I have stuff to move vertically.

Mains or battery voltage?

 

[slowmotion]

Mains or battery voltage?

There's a 30 amp, 230 volt ring main up there. It'll be easy enough to extend . I liked the look of the Silverline hoist that you linked to. It looks quite compact and isn't too heavy, only 10kg or so. That should make installation pretty straightforward.

 

[classic33]

There's a 30 amp, 230 volt ring main up there. It'll be easy enough to extend . I liked the look of the Silverline hoist that you linked to. It looks quite compact and isn't too heavy, only 10kg or so. That should make installation pretty straightforward.

You've got your lifting slings?

 

[slowmotion]

You've got your lifting slings?

Slings are a bit of a pain. I'm thinking of knocking up a "lift car" made from two pieces of 18mm MDF (say 650mm square) connected by four lengths of M10 studding, about a metre tall. The top piece of MDF will have an eyebolt to take the electric hoist hook.

 

[SteCenturion]

No advice .....

but my mate Tony Blair is really interested !

 

[classic33]

Slings are a bit of a pain. I'm thinking of knocking up a "lift car" made from two pieces of 18mm MDF (say 650mm square) connected by four lengths of M10 studding, about a metre tall. The top piece of MDF will have an eyebolt to take the electric hoist hook.

Connect the four rods and use them. They'll transfer the weight to the lower plate better than a single lifting point.

Or
http://www.instructables.com/id/Garage-Attic-Electric-Hoist/

 

[slowmotion]

Connect the four rods and use them. They'll transfer the weight to the lower plate better than a single lifting point.

http://www.instructables.com/id/Garage-Attic-Electric-Hoist/

Great article! I always go for the belt and braces approach to stuff that doesn't really matter. I'm not trying to win The America's Cup!

 

[classic33]

Found one of the thumbscrews!

How do you plan on getting the control down and then storing after use?

 

[classic33]

[QUOTE 4920696, member: 76"]Would it be easier and safer to dig a cellar and just push them down a ramp?[/QUOTE]
He'd have to get them back up the ramp though!