Motor Generators

[Turion]

I just tried it with magnets that are 1/2” cubes. Adding a second cube with a piece of plastic DID still increase the reading, so that guy WAS wrong.

https://youtu.be/7ups7EDhCNk

[BroMikey]

These are awful small to begin with but the problem is if you go any bigger your neutralizing magnets might be to weak. I see what they mean about a longer magnet does not give double increase or even 1/4 stronger, more like 10% with the gap. $7.50 x 48 = $300
https://www.magnet4less.com/n52-neod...are-earth-disc

[Turion]

Just for fun I did the following experiment. I stuck a 1” by 1” by 1/2” magnet on a metal plate and measured the Teslas. Then I put a thin piece of plastic on it, added a second magnet of the same size, and measured again. Then I put a small magnet between two of the big magnets and measured a third time.

Adding the second magnet INCREASED my reading, which kinda disproves the statement I found on the internet about stacking magnets, even WITH the plastic “air gap”. Putting the smaller magnet in there DECREASED the reading significantly, probably enough to account for the voltage differences between the two machines. Since I did not use the EXACT same magnets as in the generator, and had one magnet stuck to a piece of steel so it wouldn’t “jump up and bite me” I can’t be positive, but chances are good I have found ONE reason the output of the two machines are different.

https://youtu.be/PqHpf1wR4jI

EDIT: Oops, he said it would increase until thickness = diameter. I need to add one more magnet and see what happens. After lunch of course!

[Turion]

A gauss meter gives me all the info I need without doing a pull test. Want to build a machine that will run your house for sure and will probably get you killed sometime during its construction as well as bankrupting your family? Here are the magnets for YOU. 1,000 pounds pull force. They also have some that are 1,200 pounds pull force, but 1,000 is a nice round number.

https://www.magnet4less.com/strong-m...strial-magnets

[BroMikey]

Magnetic pull force measurements

[BroMikey]

Magnets are not very strong

[BroMikey]

Magnet video's warning

[BroMikey]

Remember that the existing 3/4 by 3/4 magnets have a pull strength of 57 lbs, and there are two of them back to back, but that does NOT double your pull strength. Per the internet:
"As more magnets are stacked together, the strength will increase until the length of the stack is equal to the diameter. After this point, any further magnets added will provide a negligible increase in performance."


So current pull strength is about 57 lbs.
The plan is build a new rotor, and put in 3/4 x 2 inch magnets that have a pull strength of 79 pounds or a 72% increase. This is the cheapest option. It lets me use EVERYTHING I have except spacers and current rotor and rotor magnets.

Or go with 1" diameter magnets by 2" that have 180 lbs of pull strength or 316% increase in pull strength. There are also some 3/4" diameter by 3" magnets and some 1" by 3"' magnets, but those are so dangerous I do not want to get NEAR them. And who needs 300 lbs of pull force anyway. I wouldn't even know where to begin to figure out the size of the cores to go along with magnets that strong to take advantage of all that flux, or how much wire to wind around it. Maybe a couple 11 lb. spools. Who wants to build THAT machine!!! $$$$$$$$

Wow that is good stuff, I am learning fast DOC. It is your money but you don't want to go over 1- 1-1/4 "

Here is your picture of the day

[Turion]

Remember that the existing 3/4 by 3/4 magnets have a pull strength of 57 lbs, and there are two of them back to back, but that does NOT double your pull strength. Per the internet:
"As more magnets are stacked together, the strength will increase until the length of the stack is equal to the diameter. After this point, any further magnets added will provide a negligible increase in performance."


So current pull strength is about 57 lbs.
The plan is build a new rotor, and put in 3/4 x 2 inch magnets that have a pull strength of 79 pounds or a 72% increase. This is the cheapest option. It lets me use EVERYTHING I have except spacers and current rotor and rotor magnets.

Or go with 1" diameter magnets by 2" that have 180 lbs of pull strength or 316% increase in pull strength. There are also some 3/4" diameter by 3" magnets and some 1" by 3"' magnets, but those are so dangerous I do not want to get NEAR them. And who needs 300 lbs of pull force anyway. I wouldn't even know where to begin to figure out the size of the cores to go along with magnets that strong to take advantage of all that flux, or how much wire to wind around it. Maybe a couple 11 lb. spools. Who wants to build THAT machine!!! $$$$$$$$

[BroMikey]

The gauss reading on the new machine is not even 50% of what it is on the old one.

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That is exciting news for your coils. Can't the rotor holes be enlarged? You found your answer, that's awesome Dave. I'll bet you were in shock.

[Turion]

I don’t have enough data to come to an informed conclusion, and really no way to get that data without disassembling a rotor or two. But here is what I know. The gauss reading on my old machine is FAR, FAR greater than on my new machine. On the old machine there are two 3/4 x 3/4 magnets stuck nearly back to back. A thin piece of the rotor about 1/32” thick separates them. On the new machine, there are also two 3/4 x 3/4 stuck nearly back to back but this time there is a 5/8 x 1/4” thick magnet between them. The gauss reading on the new machine is not even 50% of what it is on the old one. In both cases I stuck the same iron bolt on the rotor magnet and measured at the end of the bolt.

[BroMikey]

[BroMikey]

$3.45 per pound for copper at the scrap yard so it looks like $100 box to me from here

[Turion]

In case you thought I was kidding about the number of coils that have “died”’on the bench since I started working on this generator stuff. Many $1,000 worth. Boxes are 31” long by 21”’deep by 11” high x2195C966F-29E8-4528-B8FD-BCAACAA71585.jpeg

[Turion]

All my coils are wound on a bobbin that has a 3 1/2" flange. A 3/4 arbor hole. A traverse Length of 3" and a 1" barrel.
3 strands of 1,000 feet #23 AWG

Cores are 3/4 diameter by 3 1/2 long

https://youtu.be/Iy16_dbVuJ0