Fisher and Paykel Bedini motor?

[ashtweth]

Hi Guys, Kiwi thanks a lot for that info, it will help us document this Bedini angle, i saw that now Bedini is using Tesla's impulse circuity with another generator type of coil, check out EFTV part 7 to see, perhaps this can be adopted for it in the generator coils like Ren said.

Ash

[ray stewart]

regarding drive curcuit

i have 3 f&p machines and want to use them as stepper moters to drive a wheal but carnt find a suitable circuit to drive them i also want to test the cop of them before doing any mods any links to these ?
thanks

[Electrotek]

i have 3 f&p machines and want to use them as stepper moters to drive a wheal but carnt find a suitable circuit to drive them i also want to test the cop of them before doing any mods any links to these ?
thanks

Here's a site which shows how to build one type of controller:

Make your own cnc controller

[ren]

love that site mate Very cool.

Motor kindly donated by Ash

Guess what, I found one on the side of the road the next day Now I have two! I will discuss some driving options and the standard configs soon.

[ray stewart]

3 phase

now i have been thinking these motors are just three phase permant magnet moters magnets being the roter windings the stator
i think i can drive them directly form a 3 phase power supply anyone with opions on this??
further as the windings are around a iron core aranged in horseshoue configered magnet operating moter with bedine recovery circuit will not give much if any recouery as most of the energy is used to produce torque this affect can be seen with the ssg moter if you close down the magnetic field around the coil or conect 2 coils together as a hourse shue magnet the doc illistrates this affect in his dvd
any way will try running fp moter and will also measure it eficiancy
i have been using one the same one averaging one wash a day the bearings just starting to growl "hence the collecting of the three others" for over 12 years now origonally on alternate power and they are by far the lowest power users of washing machines i have seen
and am amased that other machines are still made max power draw of around 100w
thanks for the link electroteck looks complex though

[Electrotek]

Yes, the driving circuit looks complicated, and it requires a computer interface. Step motors are always a pain. I was really dissapointed when the small motors in CD Rom drives were switched over to steppers. That eliminated one of my sources for small motors. Incidentally, some VCR's have small versions of the F&P motor.

Another motor I like really well is in a ceiling fan, and it's one phase AC. It's also a rim drive - with a stationary stator and coils - and magnets could be added. The inner coils are the primary, shown as 11 in the schematic, and the capacitor produces a phase shift. On high speed, most of the outer coils aren't used. At other speeds, they provide a voltage drop which results in a slower speed. Like the F&P motor, these coils can be rewired to do whatever you want.

[ray stewart]

driving on 3 phase

well i tried the 3 phase idea and it runs very well
only drove it on a max of 100v for safty
rpm is quite slow i guess due to the 42 poles
but it is a very simple way to drive it
now just have to rebuild the whole moter so as to bench test as i drove the motor in the machine

[DadHav]

Hi Shan. Did you mention that you where wandering around in you PJ's when you found the washing machine and decided to take it apart or did I here the story wrong? I was thinking about something. I've had good success running stator motors see them on YouTube - DadHav's Channel channel. So let me get my feet wet on this forum a little bit. I think I mentioned to you there might be a chance of running the motor without changing the magnets. The magnet configuration follows the rules for running three phase so maybe you can trigger each phase with a separate SSG circuit. There might be room to wrap separate trigger coils over whatever is already there or modify the windings. Of course you already know about using hall effects or opto. Here's yet another idea based on my running my two small window motors together. I connected the two motors and used the small one as the trigger source with the full wave circuit. This ran the large motor quite nicely, This also left the two trigger coils of the large motor open to tie together in series, rectify and run back to the battery. The end result still brought me back to a combination that would run at about 2 ma but not self run. OK enough for that but maybe you see where I'm going. One of my next experiments might be to hook a very small stator motor to one of my large ones. Get it a trigger! The 3 phase trigger should match the needs of the 3 phase motor. Basically this might be a way to run any three phase permanent magnet motor without modifying the flux ring and magnets. Incidentally I have very surprising results with the motors I'm running now. I think the stator motor has been passed by while everyone is trying to duplicate other successful builds from our Peers. Come on guys, lets come up with something.
DadHav/John H

[Inquorate]

Off topic newbie type question

I'm looking into the future for when I get this gravity mill project of mine self-running, and I'm beginning to think about a suitable generator to rig it up to.

At this stage it looks like it will probably only be able to turn something with low resistance, though scaled up who knows..

Any ideas about what to look into for a proof of concept?

Love and light

[ren]

Lol @ Dadhave AND Ash.

I dont know if you read before Ash, the day after I got your donation in the post I found one of my neighbours chucking out their......FISHER AND PAYKEL!

Its a different gauge wire, thinner, but otherwise near identical. So now I have two.

Ive decided to use the standard rotor on one and build a custom rotor for the other coil set. Both will have their difficulties I guess.

I will draw a pic tonight of the coil to magnet config, we should be able to drive this directly with a hall sensor for each phase, I can see a suitable circuit already This is how it is driven originally, someone might be able to modify the original circuit if they are clever.

I will probably have to make up a separate timing wheel, but everything else should be stock parts, bar the circuit. Oh and the bearings I guess. Will use the standard shaft, getting a mount made up as we speak.

Regards.


PS. Yes. I was in my PJ's

[DadHav]

Shan. With your non standard rotor, you can select a configuration that would not require three phase operation right? There would be many workable combinations of windings and magnets.
Mount that thing up solid. Who knows. Maybe you're inventing a flying saucer.
DadHav/john h

[ren]

Yes Dadhav,

although, this might require cutting coils and/or rewiring for better results. There are 3 sets of 14 coils already wound in series around the rotor, so it really depends on what you want to do. You could have all 42 coils fire at once off a master trigger, with 42 magnets on the rotor to match.

Ash has alreadly seen me do UFO...


Regards

[ashtweth]

Yup and its good as we can get Ren up here quicker one day

[wrtner]

Where do you get one of those motors? Did you have to rip a washer apart or somthing.

Matt

Smaller versions appear as generator stators in larger motorcycles (i.e. not Vespas). check how they are wired up first.
Paul-R

[Geoff Perth]

Hi Guys

I was just doing a search for the famous Fisher and Pykle (FP) linear motor and saw your messages. I have a couple of them (FPs) that is.. here and are about to start on the Bedini road I have a background in basic electronics. I know it can be done as I have done plenty of homework on other areas of magnetism. I have a theory that using the standard pickup sensors and a variable timer we can get success. The basic wiring would consist of a few diodes some transistors and a healthy capacitor. One other thought is using the shaft out of the standard wash machine which is double headed and could be set up to work another motor in reverse configured like a (Dumbell) weight lifting configuration. The central bearing housing I have cut down to make it a hexagonal shape allong the lines of the webbing underneath.This allows a suitable shape to be held down or fixed to a flat board. If you would like more tell me...