Mostly Permanent Magnet Motor with minimal Input Power

[Khwartz]

A cap with a set value(uf) and set voltage,will have X amount of energy(joules).After running the test,IF there is any voltage left in the cap,you simply calculate the joules of energy left in the cap,and subtract that from the amount you started with in the cap befor running the experiment.This is a very accurate way of seeing how much energy you used in the test.

[Khwartz]

Where will you get a cap with an exact value - they all within at least 10 %

I understand you now: as you had the false datum that caps can be only 10 % maximum of precision, sure if the overunity gain is below 1.1 we won't see it. But what if the COP is already > 1.1 ? If you obtain 1.3 for example, haven't you proved your o.u.?

Then, the truth it is that you can get caps or make them up to 0.5 % (mica) and 1 % (glass)

Regards,
Didier

[Khwartz]

Hi everyone,

I'm working on building a Super Tandem version of the Mostly Magnet Motor

Here is a video update of the building process

Link to video: https://www.youtube.com/watch?v=XhDnqw_le88

Luc

Very Clear explanations, Luc, thanks for the video

[Khwartz]

Here is the video on winding the first coil and what it looks like when finished.

I checked the DC resistance of each bifilar stands and they are 1.3 Ohm each. The coil winding program had calculated 2.7 Ohms as a single coil, so we are right on track. I don't have my Inductance meter with me but will have it on Thursday.

Link to video: https://www.youtube.com/watch?v=ULds78-fDoQ

Luc

Agree with telecom: Great craftsmanship! Luc

[tinman]

Dear Brad, there are 3 distincts concepts here:

1. "Shaft torque",

2. "Rotor torque",

3. "Moment", or just "torque",

and as more we differenciate the concepts more we allow us to be accurate and so not leading to misinterpretations, so wastes of time, good to clear up the differences in between. So,

• "Shaft torque" is about twisting the axis,

• "Rotor torque" is about the reaction of the fluid against the rotation of the rotor (like for helicopters rotors),

•  "Moment" is "the rotational force times meter" reduced to the center of rotation when there is rotation of course (which is on the axis necessarily). This moment corresponds to "torque" when nothing is specified.

So yes, indeed, your way to measure the "torque" (definition 3) is absolutely correct but not your way to interpret it. YOU DO NOT MEASURE "TORQUE" BY YOUR READING ON YOUR PONY-BRAKE, YOU ONLY MEASURE THE "ROTATIONAL FORCE" (or "TANGENTIAL FORCE") AT A SPECIFIC RADIUS.

To get the "torque", or "moment", YOU DO NEED THEN TO MULTIPLY IT BY THE LENGH IN METERS. (To have directly the reading on the pony-brake you would need to set a 1 meter radius disk, not just been 1:1 with the radius of the rotor ^_^).

For more details about these concepts see for example:

http://books.google.fr/books?id=FiEapaNgjLcC&pg=PA423&lpg=PA423&dq=%22rotor+torque%22+definition&source=bl&ots=NIXpY_U_yw&sig=JH7FFM3jvQLjFDj6Z2aMOnjEfjY&hl=fr&sa=X&ei=wmj9U5z5LoHtaL7fgtAO&ved=0CCsQ6AEwBzgK


http://www.physicsforums.com/showthread.php?t=571073

Otherwise, still your idea of torque measurements and comparisons looks to me most relevant in the case of the Luc's MMM

Regards,
Didier.

Didier
It's a prony brake(dynamometer),not pony brake,and i never used one in my video. A prony brake is used to messure power and torque to get the horse power. Like i  said,i was getting the static torque force of the rotor in the motor,as Luc was getting from his MMM.