TinMan Generator Research Moderated Topic

[tinman]

Dear All.

Brad's " Brush tipping " pictorially.

Automatic coil shorting ??   

Cheers Grum.

Wrong coils.
But you did just show why the brushes arc
Most believe it is from high voltage kickback,when it is in fact high current arcs produced by each coil being shorted by the brushes as you have shown.

[tinman]

For your entertainment
As you will see,current causes the light show from the brushes,not voltage.
Voltage potential will only define as to how large the gap can be before !current! will begin to flow. As the gap between the brush and commutator segment will only be very small,the only a low voltage potential is required for current to flow.High voltage is also not required to see spark fly when hooking a clip lead to a wire as Luc suggested in his video.

https://www.youtube.com/watch?v=bGMMDBkf1RY

[Grumage]

Wrong coils.
But you did just show why the brushes arc
Most believe it is from high voltage kickback,when it is in fact high current arcs produced by each coil being shorted by the brushes as you have shown.

Dear Brad.

So are you saying that it would be better with Fig 2 ?

Cheers Grum.

[tinman]

Dear Brad.

So are you saying that it would be better with Fig 2 ?

Cheers Grum.

Grum
The shorting of the coils via the brushes is somthing you cannot change-unless you make your brushes thinner than the gap between the armature segments. That shorting of the coils is actually good,as that is when you see the high voltage spike on the stator coil's,as a large magnetic field is produced from the rotor coil when the brush shorts that coil.

Here is a video where i am looking for the !so called! high voltage flybacks from the rotor coils.
As you can see on the scope-there is none,even though i can see the brushes arcing slightly. The arcs are from the brushes when they are shorting each coil-not from some high voltage arc,but from a high current due to the short.

I didnt get the second half of the video due to my PWM being fried. Will post it when it's repaired.
Enjoy the background scenery of my video from now on

https://www.youtube.com/watch?v=VlRiXMR9VAE

[poynt99]

For your entertainment
As you will see,current causes the light show from the brushes,not voltage.
Voltage potential will only define as to how large the gap can be before !current! will begin to flow. As the gap between the brush and commutator segment will only be very small,the only a low voltage potential is required for current to flow.High voltage is also not required to see spark fly when hooking a clip lead to a wire as Luc suggested in his video.

https://www.youtube.com/watch?v=bGMMDBkf1RY

To help resolve the issue, putting a scope on the coil in each case would speak volumes. Guess you posted while I was writing this.