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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