NTDWM thought it may be of intrest to someone
http://www.migweb.co.uk/forums/items-sale/481837-8-ton-engine-crane-sale.html
Matty

unbelieveable! I was going to sell mine soon but its not even worth selling at that price!

Would have grabbed it if it wasnt in the deep south

Nottingham is in the deep south??


Er i dont think so, im in Crawley near Gatwick, 20 miles from brighton


That is deep ish south

£40 for a damaged one - could be a bargan for someone, but with no pic's of it or the damage it would make me think twice before buying....

quote:

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Originally posted by steve m
Nottingham is in the deep south??

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rather deceptive calling it an 8 tonne crane when it isnt as well. My piston is probably rated around that, but the crane is 500-1500kgs depending on how much you extand the arm.

^^ spot on - obviously this guy never did any physics at school
here's my 'back of the fag packet' calc....



if the crane is rated at 2 tonne, the ram at 8 tonne - say the ram acts ~500mm from the main pivot

so 8 tonne ram at 500mm, which needs to be greater than 2 tonne at a distance X (i.e. the distance from the hook to the main pivot)

8 * 0.5 > 2 * X

8 * 0.5 / 2 > X

so the max. value of X would be 2m to lift 2 tonne and thats without any saftey factors



[Edited on 19/10/2011 by mcerd1]