[TowerTalk] Maasdam "Powr Pull"

[Jon Pearl - W4ABC]

Hi Rick.

I drive an $800,000 fire dept. ladder tower for a living and carry one 
of these amongst a whole hose of extrication equipment: 
http://specialserviceandsupply.com/Prod-C3.html

It's very much a precision piece of work and rated at 3 tons. "With a 
two part line the C-3C Heavy Duty Rescue Come-A-Long’s 5/16” diameter 
aircraft cable provides a full 7 ½ feet of lift on a 3 ton load with a 
handle pull of 105 lbs..."

Hand operated units with much more load capacity than this are usually 
in the chain hoist category.




73,


Jon Pearl - W4ABC
www.w4abc.com



On 9/23/2011 7:48 PM, Rick Karlquist wrote:
> A question for you come along experts.
>
> I saw some come alongs at the Chinese tool store (you know the one)
> that claimed to pull some huge weight like 8 tons.  Assuming
> the user applies 40 lbs, this is a 400:1 mechanical advantage,
> not counting friction.  This is hard to believe.  Is this
> true of these or even the American equivalents?  Or is this
> specsmanship where it moves an 8 ton boat onto a trailer
> or something like that?
>
> Rick N6RK
>
>