http://www.solenoidcity.com/solenoid/tubular/s-70-300p2.htm

http://www.h2wtech.com/highdcbrushless.htm
Ask this company to design you an Absolutely DC Linear Motor, with a
tuned stroke velocity, meaning that the electromagnets will not reach
their full field strength until they are 1/5th of the distance each
magnet would travel.  After that, make sure that they know that the
stroke length is more than 8 feet.


1200 Watts, using 3 phase 240VAC produces 1107 Lbs of force.  Every
time I add more windings, I can reduce the voltage considerable using
DC, over AC.  Every metal they use has more time to magnetize, than it
ever could with AC at 60Hz, hysteresis, and reluctance involved.  If
they knew that the stroke was 2 seconds long, they could design a
device that uses 1/4 of a second interval, and wouldn't move at the
same peak velocity, but the peak force produced in pounds could easily
be doubled, or even potentially quadupled.  You can lift a car with a
relatively small amount of voltage and current, but you will be waiting

for the magnet to actually magnetize.  If I half the magnetization
rate, then I can double the power in force by doubling the number of
magnetic lines present.  The only real way to do that, and require less

power for more force in a ratio, of power to force, is double the
number of windings, and double the amount of time the coil is on.
Changing the wire diameter could cause the coil to require a higher
voltage to establish the same number of ampere turns, and increasing
the wire diameter to compensate for that would require a larger
magnetic core to wind on, with a larger space and volume set asside for

the coils.  The mechanical force is gained.


When you start looking at a very low RPM, that is around 1 to 0.25,
most ferromagnetic metals have the time that they need to reach their
maximum.  As long as that happens, it really changes everything.  It's
never too slow when you are using a flywheel somewhere, that is
actually moving at a high RPM, and smoothing out the linear motion.


Faster, is never better with magnetic motors.  The metal can help
allot.


This magnet can lift over 360 Lbs, and the input power is 72 watts.
Solenoids are not allowed to clamp, lifting magnets always do.  The
difference is relatively small.
http://www.solenoidcity.com/electromagnet/e-40-300p2.htm


http://www.solenoidcity.com/electromagnet/E-40-300p1.htm


http://www.solenoidcity.com/electromagnet/e-40-300p2.htm


So, if the linear motor is using 1200 Watts to produce 1107 Lbs of
force, and I took 1107lbs/360lbs I get 3.075, now I take 3.075*72Watts
and get 221.4, that tells me how many watts I would need to lift the
same amount of weight using three of those DC magnets.  The difference
is, that when you turn on that DC magnet, you leave it on, and so you
don't notice if it takes 1/2 second, or 1/4 second to reach that full
potential.  Eventually, it really does work out that a solenoid can be
designed as the soul member of an over unity device.  The engine that
drives the generator. 


Dre, cross post like everyone else!