The Bedini's Magnetic Gate test
By Phil Bright
created on September 27th, 1999 - JLN Labs - Last update September 27th, 1999

Enjoyed your recent Ohsaka Principle piece ( with a nice anthology of other permanent magnet phenomenon). TOMI looks interesting. As a retired Electrical Engineer my research has typically been in the areas of scalar waves, long line pulses, inductance, resonance, etc. I just can’t resist reporting results of several magnet experiments after reading your article, however.

My experiments and conclusions with the Hamel spinner are like those of Jean-Louis Naudin. No problem getting spin with a verity of disk and magnetic gate combinations. No combination of distance and angle adjustment on a ridged fixture will maintain spin. Until someone mechanically nutates the gate (presumably with active feedback) and measures the energy required to nutate and shows net Energy gain vs. the spun momentum energy; this will remain an interesting magnet top.

I would like to share more specific results and thoughts on Magnetic gate compression experiments. This set of tests was inspired by JLN Labs work in 1997; part of which you link in the Ohsaka article.

Basic experiments: Determine the Energy produced when a projectile magnet (PM) is passed through an all North magnetic gate. Determine the Energy required (if any) to position the PM at the trigger point where it is sucked through the gate on its own.

Projectile kinetic energy measured as follows: A slick coated 10" long paper tube ¼"+ diameter is positioned at the exact center of a magnetic gate and set level horizontally at about 9" above the horizontal reference, with the ejection end of the barrel at the edge of the gate. The projectile magnet (PM) is very slowly pushed into the tube till it popes through the gate like a slow speed bullet. The impact point from the trigger point in the barrel is recorded on a piece of aluminum foil in the bottom of a shallow catch box. From here is it basic physics to find the energy imparted on the projectile. Coefficient of friction problems are nearly eliminated and air resistance is presumed small but was not calculated. This turned out to be a highly repeatable test. Flight time is known from the height of the projectile above the horizontal reference . Average velocity is calculated and Energy is ½ Mass x V squared.

Now the energy needed to get the PM to the trigger point: Indeed it takes energy to push that PM to the trigger point.; which is a very definite repeatable snap action distance into the magnet gate. The tube and gate unit are set dead vertical and the PM is dropped from the top of the tube via a needle quickly withdrawn from the side of the paper tube. The PM bounces up and oscillates like it was on a spring until there is just enough vertical height; then it pops through with a lot of velocity. Again, very repeatable drop height. energy E = M*g*d

These are the results:

RING1 is 2" ID x ¾ " long medium strength ceramic magnet ring. RING2 is 3" ID x 2" long strong ceramic magnet ring. Projectile magnets PM1 and PM2 are polished centerless ground ¼" diameter by 13/4" long Alnico 5 magnets; mass of 14 grams. (PM2 slightly demagnetized to get some variation). Each table data point was repeated 3 separate times. (Avg. used)

Data is in millijoules

 RING2 RING1 input output Ratio O/I input output Ratio O/I PM1 32.7 28.7 88% 8.2 6.82 83% PM2 25.6 22.5 88% 5.89 4.88 83%

Conclusions: Takes more energy to push the PM into the trigger point than is imparted when it snaps through the gate. A strong field seems a little more efficient and PM strength not a big factor. There seems to be no magic in this gate utilizing a projectile magnet squeezed through the field.

This is just an example of a hard scientific method experiment to look at one of many magnetic "gee whizzes" that I see reported. My further thoughts and experiments on this involved shielding the input side magnetic repulsion (e.g. input Energy) of the PM prior to when it reaches the trigger point. Its a pretty efficient system (88%) as a starting point, but no luck with counter magnets or iron shielding so far.

Phil Bright