Mostly Permanent Magnet Motor with minimal Input Power

[tim123]

Hi Luc, I've been trying to figure out what's buildable, and I've added a spec for a prototype here:
http://www.overunity.com/13673/tims-magnet-piston-engine-design/msg366365/#msg366365

It's not too big. It's a bit of a hybrid between yours and my ideas - in that it could use 2 permanent magnets, but it has the fixed central core for added push. It should still be OU enough to prove the concept (about 50-100x ?).

I was also thinking - if the shaft in my design was magnetic - as in yours - it should contribute to the force - as it does in your design. I was thinking it would just interfere with the bearings, but PTFE sliding bearings would be ok.

:-)
Tim

[gotoluc]

Thank you Tim, I'll have a look

Luc

[telecom]

Hi Luc,
was very excited looking at your videos - great work!
Just want to point out that in order to generate 1 w of energy you should be able to lift weight of 10 kg by 1 centimeter at 1 second,
or 1 kg by 1 cm 10 times per second, or 250 grams at 1 cm 40 times per second!
But generally speaking, in order to achieve this you need a) - much bigger magnets, b) - much smaller travel of the coil.
According to my calculations the magnet ( the source of the energy) should have the pull of about 400 kg, and the travel about
.5 cm. With your setup this doesn't appear to be practical since magnets will be fighting each other (IMHO).

[Khwartz]

Hi telecom! Nice to see I am not alone to advise for outpower measurement by weight lifting: kg/s against the gravity; it is for me most undisputable way to demonstrate any O.U. What do you think?
Cheer.

[telecom]

Yes, this appears to be the simplest way. After all, this is what Watt was using
to determine 1HP - 75kg x M/sec.
In our case, we want the mechanical work of magnet attraction (repulsion) to exceed
wattage of the solenoid. The OU can come from the pumping action by engaging
magnets at certain frequency - the higher, the bigger mechanical output per second.. But still, the magnet should be quite big - 400 kg pull +. Also, the travel should be
quite small, within 1/4 of an inch to optimize the magnetic force, which drops
parabolically with the distance.
What do you think, guys?