TinMan Generator Research Moderated Topic

[Jimboot]

well that was weird. found the motor would spin even if the brushes were on the same side only one segment apart. Also i was charging a battery via the diode method that brad showed. I decided to hook both coils in parallel. increased the voltage but when i put one coil direct to the battery, so full wave, the motor sped up significantly and required less voltage (not measuring current atm)

[tinman]

well that was weird. found the motor would spin even if the brushes were on the same side only one segment apart. Also i was charging a battery via the diode method that brad showed. I decided to hook both coils in parallel. increased the voltage but when i put one coil direct to the battery, so full wave, the motor sped up significantly and required less voltage (not measuring current atm)

It is good to see some prepared to learn as they go,while others just expect everything handed to them on a silver plate. They dont care how it works,or how much time the inventor put into his device,as long as they get it,and can use it to there own advantage.
Now Jim-how is it that you can generate power to charge a battery,but instead of loading the prime mover up,it decreases the prime movers power consumption. Where is the lorentz force?.

I decided to hook both coils in parallel. increased the voltage but when i put one coil direct to the battery, so full wave, the motor sped up significantly and required less voltage

Im not sure what you mean here?.Was the battery feeding the coil,or the coil full wave rectified,and charging the battery?.
If the battery was feeding the coil,then you just created a magnetic field around your stator winding,and the rotor is now more attracted to that part of the stator core. You will find(or should) that if you reverse the polarity of the battery feeding the stator coil,the motor should spin backwards.You can achieve the same effect by using a PM embedded in the stator core.
If you have rectified the stator coil,and are charging the battery,then you are off to a good start.

[penno64]

Hi Grum,

If you stop the video at exactly 1:02 you will see the tipping of the brush. About half of the original width.

The purpose or tipping ensures only connection to one commutator segment at a time. Much like your shaved
brush in your video.

Tilting is where Brad means adjusting the brush position.

Regards, Penno

Sorry Grum,

After further viewing and going back to your video, I wish to correct the above info.

I now feel that the slanting of the brush gives more surface area and hence maybe allows connection to more comm. segments - not less.

I could be wrong but time and experimenting will tell.

Brad,

The 2 diagrams from post #1,

If the lower switch is on then is not the dc flowing directly into the lamp on the left side of the diagram?

Regards, Penno

[gotoluc]

Love your builds Luc. Can't wait to see how it turns out. Be interesting with such large commutator segments

Thanks Jim

Yes, rather wide commutator segments    we'll see how she goes.

Nice builds Luc-i really like the SS build. I was thinking that the end keepers that you are going to wind the output coils on should be cut down so as the finish at the edges of the two blocks with the flux diversion coils on them-whats your thoughts on that?. I just think that the flux path needs to be as tight as possible. Im hoping you go the SS version first .

I have just started my SS build-dont get much time after work to do any thing,but going as quick as i can.

Brad

Thanks Brad,

the reason I didn't cut down the keepers yet is, where ever we cut steel laminations there's a small build up of eddy currents at that location caused by some small shorts between laminations while cutting.  I don't know which would be worse, loosing a little flux or eddy currents, so I'll wait to cut them. Maybe adding an other magnet would be the better solution. I'll play with it fist.

An important note for everyone, if you cut transformer lanination make sure to add 1/4 inch steel plate exactly where you want the cut on each side and place it in a vice, or use vice grips or a C -clamp well tighten (on the side you want to keep) so not to cause inflation between the lamination layers while cutting. It also helps to guide the cut straight as you can rest your grinder cut off wheel on it. Also, another note is you must use as thin of a cut off blade as your grinder can use, which make the cut much cleaner and faster. No need for much pressure on the cut, let the wheel do the work. I would recommend to use a mask as there is silica in the metal which you don't want to breath. I've cut so much of the stuff and didn't think to wear a mask at first and you must wear goggles to protect your eyes.

I decided to hook both coils in parallel. increased the voltage but when i put one coil direct to the battery, so full wave, the motor sped up significantly and required less voltage (not measuring current atm)

Jim, if your input voltage drops, that is usually a sign you're using more current.

Luc

[Jimboot]

Sorry Grum,

After further viewing and going back to your video, I wish to correct the above info.

I now feel that the slanting of the brush gives more surface area and hence maybe allows connection to more comm. segments - not less.

I could be wrong but time and experimenting will tell.

Brad,

The 2 diagrams from post #1,

If the lower switch is on then is not the dc flowing directly into the lamp on the left side of the diagram?

Regards, Penno

Pythagoras told me earlier *ducks