hey guys,I've been trying to keep up with your progress,you're doing
great ,wanted to offer a little "real world" experience with the
hydralic cylinder idea.I own equipment and have wrestled with more
than a few hyd cyl in my time.The problem is rust.Even full of hyd
oil, water in a hydralic system vaporizes and can cause damage to the
cylinder bores.Maybe a sleeve of 316 or better grade stainless steel
could help.I realize that will probably(but not definately) rule out
using the piston that came with the cylinder,but you would have to
change the seal setup anyway,perhaps ceramic piston rings as used in
the hi-perf auto market?I'm not trying to discourage(quite the
opposite) but I cant see a chromed hyd cyl holding up to steam for
long without some mods like these.There are alot of impressive Hi
density plastics out there that have potential for sleeve material,and
that is what alot of the seals are made of in the newer hyd cyls,so
they will take the stress. Ive been rigging things out of scrap for a
lotta years,and with a little thinking and fiddleing it usually
works,despite what "they" say,lol. Keep up the good work,I'll try to
On Mar 3, 3:47 pm, "..." <offonoffoffon...@gmail.com
> > That's very interesting. More details? Size, resistance, material,
> > pricing?
> I don't have many details to give. working hydraulic cylinders capable of
> containing well over our working pressure are on ebay for cheap, and would
> be even cheaper at a scrap yard. these can be found in large diameters
> with long stroke lengths, which is suited for steam (low rpm, long powerful
> strokes). for instance, two cylinders with pistons for $50:http://cgi.ebay.com/2-Prince-Hyd-Hydraulic-Cylinders-Bore-3-Stroke-16.
> new seals, rings and gaskets would be needed. I dont know what the
> requirements for them would be.
> it would be best to wait for something with corrosion resistance. I dont
> know what their usual use is, but cylinders hard chromed on the inside are
> available. pulp mills have serious corrosion problems, and technology to
> match. Without that, a carbon steel cylinder and piston could be
> electrolessley nickle plated and maintain tolerances for $300-$400 with an
> at home kit. there may be cheaper alternatives.
> The piston would need to be bolted to a heavy chasis with a flywheel, which
> could be fabricated by an amature.http://www.istockphoto.com/file_thumbview_approve/2568700/2/istockpho.