Apples and oranges here Mark. Anti-lock Braking Systems work off hyd
pressure.
You are looking at probably a 1000 psi or more hyd pressure pump. Might
be
good for getting your landing gear up and down but I doubt it.
Probably low volume low HP.
Paul Lamar
Auto Anti lock systems are supplied pressure from your foot and the
master
cylinder, they just modulate that pressure to keep the wheel from
skidding.
Same with large aircraft anti-skid.
It should be considered more of a solenoid valve than a pump. I suppose
there could be a hyd pump, but it would take a significant amount of
time to
achieve pressure if it was the size that would fit under a car hood, and
would take a boatload of current.
Several friends and I are looking into the GM electric smog pumps. About
$100 new from what I can tell; on most vehicles with LS-1 engines.
Of course we want them so our cars can pass emissions :)
Mike Harrington
The only way you can modulate hyd pressure to the brake cylinders
is to bypass some of it back to the master cylinder reservoir.
This bypassed fluid must be replenished at high pressure somehow
when needed or your foot will slowly sink to the floor.
I does not take a large pump as we are talking about a very small volume
of fluid.
I am open to hearing about another way of doing it.
Paul Lamar
Maybe newer ABS units do this. Older ones (90's) simply switch pressure on
and off rapidly to clasp and release the brake very quickly.
No return line to the MC.
Mike Harrington
I don't think so Mike. You cannot switch pressure off. You must
allow fluid to escape to a low pressure reservoir. The reason
this is so is because of deflection in the hyd lines and
the brake calipers. The wheel must unlock.
Read my book on Race Car Braking Systems
published about 30 years ago by Steve Smith Autosports.
May be out of print. Steve Smith himself was a student
of mine.
http://www.ssapubl.com/
Paul Lamar
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