Vehicle Recovery - Call the experts...

[AdamW]

Seeing as they are using a crane that size to lift an empty net, does make you wonder about the wisdom of the Hiab operator in the original photos!

say that you find the flicker from CRT's extremely uncomfortable

Damn, I wish I had thought of that a few months back when I was having my "workstation assessment". You can get all kinds of goodies if you complain of back pain or RSI. If only CRTs weren't so damn reliable, or if they became obsolete within a couple of years like the PC itself.

my "boss" (the one who write the cheques) is a snivelling little s**t anyway, also about 5 years my junior

Hehe, I am sure people have referred to me in the same manner before! I have found through my various roles that asking people 30 years your senior to do something isn't so hard because it is obvious who has the experience and knowledge. But if you combine a small difference in age with a large difference in intelligence, things can get aggravating.

Let's just hope your snivelling colleague doesn't post on DIYnot and makes the connection.

 

[pipme]

The crane, rear mounted with stabilisers deployed, illustrates what D&J was saying ... fair old lever twixt cab / engine and rearmost axle, and working on centre line .. I wonder how much weight would lift front wheels with this configuration ?
P

 

[david and julie]

Correct pipme, top marks.

Technically speaking the final truck lifting the tanks may not be exactly right, although they are so light it wouldn't matter.

If you look at the hook the chains are at an actute angle, quite straight if you like. This angle is called the choking angle and around 120 deg is the most it should be. The reason is that if this was a heavy lift it would try to crush the load inwards before it lifted, it also effects the SWL of the slings.

The way round it on solid loads would be longer slings or move them towards the centre which can't be done here.

I would say the reason they are using such a big truck is because of the distance down to the water. Unlike a crane, which can lift and lower the hook independantly, a Hiab hook is fixed. I would guess thay have kept the slings as short as possible so the load will come of the floor and reach the water.

BTW, are they fish tanks?

 

[2scoops0406]

Let's just hope your snivelling colleague doesn't post on DIYnot and makes the connection.

Make a connection, that'd be a first !!

 

[pipme]

Ok, if connection not twixt his boot and Edwardino's posterior !!

 

[pipme]

The fishy source of pix :-
http://www.ghsteelheaders.com/net_pen_project.htm

I would look at the 4 chain set up, having equal chain lengths and included angles, diagonally as a pair, draw or calc the vector forces then halve them for forces on the separate sling pairs.
We would have used 90° included angle as a general rule of thumb in engineering thus equalling crush and lift ... but it does require common sense and thinking on the feet ... good fun guessing the center of gravity, then seeing how far out it was !!

 

[chambsesf]

What happened to the original link? I can't access it.

 

[kendor]

no access to page 1?

 

[chambsesf]

no access to page 1?

Yes, but when I click on the link, I get some page in a foreign language and no pictures.

 

[kendor]

you're right it's gone! Wonder when DIYNOT will give a facility for uploading pics to their site?

 

[mildmanneredjanitor]

When they start charging for subscription to pay for the high bandwidth and data storage charges!

 

[kendor]

put me down for half a dozen pics
can i have them High Res?

 

[mildmanneredjanitor]

Try here instead: http://zattevrienden.realroot.be/depanneren.htm

I think they may have thrown a towel over the link...

 

[pipme]

How in #### did you find that MMJ ?

 

[mildmanneredjanitor]

How in #### did you find that MMJ ?

After I posted it on another forum

and was told that it had been done before.... on another thread

So, no, I'm not fluent in any other language than lageranian

P.S. I like your sig!