Fusionchip's Bedini Feedback to Source!!!

AbbaRue · February 17, 2009, 05:29:25 PM

@plengo
I bought a 48 volt fan today that looks almost identical to yours, same company even.
But when I opened it up it doesn't have bifilar windings in it, only a single strand from coil to coil.
How do I modify this type of motor? Did yours have bifilar windings?

Should I modify it like nievesoliveras shows in his diagram a few posts up?
So 2 of the 4 windings are power and the other 2 are the output pulse?

It would be a lot of work to rewind this with a bifilar coil but I may have to do that.
If so I would just leave the circuit board intact and just remove these windings and rewind with bifilar.

gadgetmall · February 17, 2009, 07:05:25 PM

Quote from: AbbaRue on February 17, 2009, 05:29:25 PM
@plengo
I bought a 48 volt fan today that looks almost identical to yours, same company even.
But when I opened it up it doesn't have bifilar windings in it, only a single strand from coil to coil.
How do I modify this type of motor? Did yours have bifilar windings?

Should I modify it like nievesoliveras shows in his diagram a few posts up?
So 2 of the 4 windings are power and the other 2 are the output pulse?

It would be a lot of work to rewind this with a bifilar coil but I may have to do that.
If so I would just leave the circuit board intact and just remove these windings and rewind with bifilar.

Hello . I am Fusionchip . If you have a BRUSH LESS FAN it is wound with two wires . on one of the end post there are two wires . you must get a magnifiers and carefully remove one of the wires and make an extra post or just solder a lead off it and glue it .
Also if you looked at My videos you will see it is impossible to just remove the stator ,you have to Break it off

Imhopep did not show that

Goat · February 17, 2009, 07:13:13 PM

@ All

I also bought a 48 volt fan today but it's only a 2 pole bifilar (see pic), anyone know if and how to go about wiring this fan? The last 48 v fan I had was wrecked when I brought it to a shop to press out the shaft

Regards,
Paul

AbbaRue · February 17, 2009, 07:39:00 PM

@gadgetmall
I already built a bedini from a 12 V computer fan so I know how to do it now.
But this 48 V motor I bought is wired different it definitely has only one strand going from coil to coil.
Also one end goes to a pin but the other end goes directly into the circuit board.
Totally different setup from the 12V computer motor I modified.
Anyone else buying these motors should try peeking into the crack of the motor to make sure it is bifilar wound.
Because some of them are wound with only one strand.

@gadgetmall did any of your 12 volt versions clearly show more output then input?
Mine definitely runs the battery down as it runs.
I tweeked the pot. for hours trying different settings and always seen the battery voltage keep going down.
I bought a few larger 12V fans to try building another one, maybe a larger fan will put out more power.
I looked through the crack in the rotor of them and can see they have bifilar windings on them.
Princess auto only carries the one type of 48 volt fan and it's not bifilar wound.

gadgetmall · February 17, 2009, 08:23:55 PM

Quote from: Goat on February 17, 2009, 07:13:13 PM
@ All

I also bought a 48 volt fan today but it's only a 2 pole bifilar (see pic), anyone know if and how to go about wiring this fan? The last 48 v fan I had was wrecked when I brought it to a shop to press out the shaft

Regards,
Paul

Ok . glad you got it apart . check the continuity on the two sets of wire . solder for the 4th wire so you have 4 post and two circuits . should work fine.It appears to have two windings because it has two colors of wire therefor its bifilar.
Al