"dave" wrote: looking to buy a used hyd cylinder on ebay (or some similar
source) for use in a home-brewed tilt trailer. have a couple amateur
hydraulic questions: (clip)
^^^^^^^^^^^^^^^^^^
The answers you have received are all correct, but your questions indicate
that you don't know enough about the basics to even consider such a project.
Without understanding the engineering, you could look at other trailers all
day and not absorb the important design criteria.

Things that could go wrong:
1.) You could start the project and never finish it.
2.) You could wind up with a trailer that doesn't work, or doesn't work
very well.
3.) You could wind up with a trailer that breaks with the load raised, and
kills someone.
4.) You could wind up paying someone to unscramble your mess, and spend
more than the cost of a ready-made trailer.


if there's no label or tag on a given cylinder, how do you tell by looking
at the cylinder if it's SINGLE acting or DOUBLE acting? also

"all other things being equal", how does one tell what weight, say, a
given cylider can LIFT, straight up? for sake of discussion let's assume
load to be lifted has perfect "zero friction" bearings guiding it. I
assume the answer has a lot to do with size of the cylinder *piston*, and
amount of pressure pump puts out "to" the cylinder ? but what's the
formula?

also, can -ALL- hydraulic cylinders be operated 'in any orientation'? eg:
with cyl body horizontal, vertical, or at any angle anywhere between the
two?

for application in a tiltbed trailer, I assume a cylinder that's bigger
and with a LONGER stroke mounted, say, closer to the hitch, would
be -vastly- better than having a shorter cylinder with an even bigger bore
mounted closer to the axle (so it had a shorter stroke). that be correct,
then?

in same appplication, bubba here also guesses designing a tilt-trailer to
employ very nearly the FULL stroke of the cyl is better that making it
use, say, only half the stroke, correct?

and is there a way for a guy to some sort of 'intermediate throttle body'
or something so that a single-acting cylinder can be made to perform
'double-acting functions'?

thanks for educating me, guys :-)

toolie

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