Imhotep-Bedini

[freepenguin]

I did try build it today and failed.
One coil wire was broken accidently during disassembling.

Should I throw away the original circuit in the fan?
I watched the video several times, didn't see where the original circuit put back.

[guruji]

I did try build it today and failed.
One coil wire was broken accidently during disassembling.

Should I throw away the original circuit in the fan?
I watched the video several times, didn't see where the original circuit put back.

This happened to me too but I manage to rewind the fan. A little courage and patience and you do it. Rewind the coil clockwise than anti clockwise.
My problem is that the batteries are not holding charge for long time but it's a nice project anyway.
Thanks to Imhotep and Bedini.

[freepenguin]

This happened to me too but I manage to rewind the fan. A little courage and patience and you do it. Rewind the coil clockwise than anti clockwise.
My problem is that the batteries are not holding charge for long time but it's a nice project anyway.
Thanks to Imhotep and Bedini.

How did you test the rewind fan?
I checked the resistance of coils: Trigger and Power - both were 139 Ohm. When I hooked up either coil with battery, the fan got magnetized and did not run freely.

I used 1N4001 dioide and TIP102 Transistor today which I bought for another Bedini project. The system wouldn't run at all.

I might get the exact components and will try again.

[MightyLance]

Greetings Imhotep, and other users here trying this experiment:

I want to share my partial experience so far. As I've heard one user quote - no two fans are the same, this is true. The first fan I tried had a captive washer holding the rotor on instead of a c-clip. While these are really easy to get on, they are very hard to get off, so I aborted that one. The second fan I tried had a c-clip. I got the rotor off, but the construction of the stator was a little unusual - two of the posts went right through the plastic of the fan, and it appears they glued it. The third fan was a 120mm fan I got with an Apevia case - not only did everything come apart great, but I wanted to recommend it, because there is no drilling necessary - they have a hole for the 4th post already. I believe the fan is made by Aspire - it is one of these blue translucent fans with 4 blue LEDs installed. I have the circuit board removed from the fan and am proceeding. I think it might be possible, however, to use small or surface-mount diodes and a transistor, and might be possible to reuse the original circuit board. Also, I found (at Radio Shack, of course), AA-sized 12V batteries. I want to try to understand the Bedini principle behind this device: What it looks like is being done is half of the coils in the stator are being converted into generators rather than drive coils. The result is that the fan no longer has enough torque to start up, but a nudge will start it, and it should keep running until the electrolytes in the battery break down, or the windings oxidize - whichever comes first. A friend of mine is looking into developing some low-cost power for 3rd-world countries, using giant windmills or solar arrays - I told him it could be done with an anemometer array for a lot less. Some day, I want to build a Bedini motor/charger from scratch without using an existing fan.

MightyLance

[MightyLance]

Hello Imhotep and All:

One user mentioned the motor not functioning after the modification. I'm looking at the coils from this 120mm fan, and see some unusual stuff, and am wondering if you could shed some light on this. With the posts facing you, with the missing post in the 12 o'clock position, going clockwise. The coil with the missing post has one wire going to the inner windings from one side, and one wire coming out of the inner windings on the other side. The 3 O'clock post has one wire going to the inner from the 12 O'clock post, and 2 coming out of the other side - one of those two appears to be coming from the post. The other is coming from the inner. The post has a second wire coming from the outer. At the 6 O'clock position, the two wires from the 3 O'clock post are going into the inner of one side, however there are 3 wires coming out the other side - one is from the post and get this: it's reverse-wound. All 3 wires go to the inner windings of the 9 O'clock coil. At the 9 O'clock position, one wire comes from the outer and goes to the post, then 1 wire comes from the inner windings and goes to the 12 O'clock post.

So a hunch of what happened with the guy who magnetized the motor - I think what happened in his case (and what might happen on mine if I'm not careful), is instead of having two opposing coils act as drive, and the other two being generators, he has two adjacent coils as drive, and two adjacent as generators. If this is the case, when powered up, the fan would resist turning, and the device won't function properly.

MightyLance