MmmmHmmm…
On Tue, May 14, 2013 at 4:15 PM, Hol Gaskill <hol(a)gaskill.com> wrote:
dude
http://sfbay.craigslist.org/eby/cto/3788876652.html
May 14, 2013 03:44:31 PM, di.franco(a)aya.yale.edu wrote:
I'm still figuring it out as I play with options.
I'd spend up to $10k if I can figure out how
to make something I'd
actually want to drive regularly. Don't think I'd
need to go over $5k
though even with pretty fancy hydraulics. My sense so far anyway, assuming
very economical frame and ancillaries. hydraulicinnovations.com's chopper
was around $3k I think off the top of my head.
I'm also trying to modularize the thinking somewhat so cost / performance
can scale up / down, somewhat similar to wikispeed.
>On Tue, May 14, 2013 at 3:39 PM, Hol
Gaskill hol(a)gaskill.com> wrote:
>how much are you looking to spend on this project overall?
May 14, 2013 11:27:08 AM,
di.franco(a)aya.yale.edu wrote:
I've seen small displacement ones
amounting to about 13 HP sustained
capacity for a couple hundred. That's enough for highway speeds, barely,
with good aerodynamics.
Would like to find something capable of 40
GPM at around 2000 PSI, 3K RPM
for pump, 1500 RPM for motor, very roughly, to be in the same ballpark as a
mid-performance car.
>On Tue, May 14, 2013 at 11:23
AM, Hol Gaskill hol(a)gaskill.com> wrote:
>what is a good price for one of those
and what prices have you seen so
far? will it be prohibitively expensive?
May 14, 2013 10:40:38 AM,
di.franco(a)aya.yale.edu wrote:
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(a)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=n…
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/B00…
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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