"Capt. Mooron" wrote

| So you've never seen one. It is at 25% and less when the
| boom is extended out. Here's a pic of one my little Canuck
| friend.
| http://www.jcwhitney.com/autoparts/P...lay/s-10101/p-
| 1498/c-10101

Sorry.. got an error message on that link


can't you cut & paste?

http://www.jcwhitney.com/autoparts/P...1/p-1498/c-101
01

look at the first one. Closely.



|
| Only the bridge? You have any idea what a bridge weighss?
| And the gear is at about 5%, I'd say.

Lifting the bridge / Lifting the boom - Geared rams / Solid Vang ...
hang a
boat off the end of the ramp and see if it still lifts.


Yes, it will.




Maybe you should google for serious excavators... drag lines used to
do
really heavy lifting...


Serious drag lines/cranes (stick cranes) use a 'topping lift', so to
speak.


| need more?
|
| Sure... the examples you provided so far hasn't done
| anything to convince me
| that the capacity of a lifting device secured to a
| location less than 25% of
| the span of the boom can lift as much as one located at
| the end of the boom.


Well, duh, any 7th grade student knows that.

You wrote;
"Capt. Mooron" wrote

how many
lifting devices utilize a support located under the boom at less
than 25% of
the boom length? NONE!


And I gave you some examples to prove your statement false.




| How about a diving board?

Dopey!! ... put Bob at the end of a diving board and

it would break.



Now put a block and tackle [1ton] to the
end of the diving board and you should be able to lift it level..
even with
Bob on it.

better use a 5 ton.


Is there any body here who is smart & good looking?

Yes ,Jax

CM


Oiy!


Scotty