Sweet.
Let me know if you come across a good value variable displacement pump or motor.
I'm not having an easy time finding those on surplus center and they're well-suited to vehicle applications.
Proportional/servo valves as well, likewise.


On Tue, May 14, 2013 at 10:36 AM, Hol Gaskill <hol@gaskill.com> wrote:
Just throwing out a few ingredients for cost estimation purposes.

HYDRAULIC POWER
Complete Hyraulic power unit $299
http://www.northerntool.com/shop/tools/product_200329758_200329758?cm_ven=natural&cm_cat=netconcepts&cm_pla=Google&cm_ite=https%3A%2F%2Fwww.google.com%2F%26

vs

11GPM 3000PSI hydraulic pump - $90, would need a motor and coupling, or a clutch/gearing to use power from an engine
http://www.amazon.com/Hydraulic-Gear-Pump-2-Stage-Brand/dp/B009OXYYS8/


Hydraulic motor $125
http://www.amazon.com/Chief-Hydraulic-Replacement-Char-Lynn-Diameter/dp/B00C2TMBZY/

1.5" bore, 10" stroke - $50
http://www.amazon.com/Mighty-Double-Acting-Hydraulic-Cylinder/dp/B00BGZ9VNU

2.5" bore 14" stroke - $60
http://www.amazon.com/Mighty-Double-Acting-Hydraulic-Cylinder/dp/B009LQIXJ4/

this doesn't include valves - there are manual and solenoid easily available but I would like to also develop a standard servo-actuated ball valve
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