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Posted to rec.crafts.metalworking
J. Clarke
 
Posts: n/a
Default Heavy quick release mechanism???

TJH wrote:

OK, perhaps this might sound strange, but I'd like to drop a car from a
crane.

I'm thinking about doing a project for a high school senior class to
show the violence of an auto crash (educational for prom week) at
roughly 30-45mph. In order to do this, I'd hoist an auto by a crane up
say 40 - 50 feet, and then drop it to the ground. But, to do this, I
need some type of quick release mechanism, because the crane owner
isn't going to risk damaging his equipment by free-falling the cable.

I've thought about using heavy duty strap webbing with a quick release
buckles, but I'm not sure if they would support the weight. The release
has another problem - how do I do it from the ground? Ideally, I would
have some sort of remote controlled release, but wireless? Wired?
Mechanical? Cheap and easy is the challenge as well.

If any have any suggestions, I'd love to hear them.


I've already given a serious response, but quite honestly the country boy in
me wants to hoist it on a piece of rope and get out my target rifle and
peck away at it with .22 long rifle until the rope gives way.

Never be allowed to do that these days though.

--
--John
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(was jclarke at eye bee em dot net)