Bedini Ferris Wheel Regauging Motor

[John_K]

Lookin good!

Hey Les,

That's looking great!

It looks like you are pretty darn close right there.

I think it's time to just let it run and see what sort of charging and loading you get out of it.


John K.

Ooops!

This is the right video... Sorry about that....
NewTiming.mp4 - YouTube

Les

[Les_K]

Ooops!

This is the right video... Sorry about that....
NewTiming.mp4 - YouTube

Les

[Les_K]

Les, thanks for the pictures and video. I would've though you would get the fastest RPM with the way you have it tuned in the video as if I tune the same way with an SG I get the fastest RPM.

Try and tune it to the fastest RPM with 50% duty cycle and show me where the transistor turns on and off.


John K.

Ok Check this out..

http://youtu.be/4pE1ZnEvyg0

This is when I have it set to just before the center with the given rotation. It is interesting how narrow the tuning of the hall actually becomes at this point. And what was interesting was that I began to see a slight curvature on the scope shot. But I could also tune very nicely at what point it reversed and began to kick forward. This was really cool as I could easily see at what point I was at and how close to the 23 degree mark I was. the battery went dead in the camera so I lost some of that.

Like I said the scope shot showed a slight curvature, so I added the Neo magnets and it really changed.
CorrectTimingScope.mp4 - YouTube

I would say that the curvature began to happen as part of the interferometry. since I did not see this until we got into the timing. And if there is a difference between this machine and an SG machine I would say that it would be the interaction of the interferometry.

At this point it is running nicely at about 1.2 amps and is charging quite well. I didn't get a scope shot to see what the rate of cap dump was because the batteries were pretty well depleted so I am charging them. But up to this point I would say the best this machine has done so far is about 50% efficient if that. So we will see what these changes have done.

Also as to the RPM's they are up but I haven't checked the actual speed yet. But I do know from all my experience with these machines the fastest rpm is not the best charging. the slowest is not either. 75% to 90% of the machines maximum rpm is where my best charging has been with my builds. but everyones builds do vary......

Les

[John_K]

Thanks Les

I think this is better than a picture John.
Correct timing.mp4 - YouTube

The right side is the 1/8th and the left 1/4 and it rotates counter clockwise. I can set it up to run clockwise by moving the hall. Anyway look forward to any new information and Thanks again

Les

Les, thanks for the pictures and video. I would've though you would get the fastest RPM with the way you have it tuned in the video as if I tune the same way with an SG I get the fastest RPM.

Try and tune it to the fastest RPM with 50% duty cycle and show me where the transistor turns on and off.


John K.

[Les_K]

I think this is better than a picture John.
Correct timing.mp4 - YouTube

The right side is the 1/8th and the left 1/4 and it rotates counter clockwise. I can set it up to run clockwise by moving the hall. Anyway look forward to any new information and Thanks again

Les

[Les_K]

John,
Just sent an email with a picture of mine and one from the conference.
There is a dropping off of each signal from the conference but on mine it is almost level with no curvature if that makes sense?

I'll draw a picture of the timing. It is definitely not switching like that.

Les

[John_K]

Inverted?

Here's a scope shot of the coils. I didn't realize it but I went back and looked at the picture from the conference and this looks identical.

Looking across the coils-2.mp4 - YouTube

Les

Les,

It look slike your scope shot is inverted, but that's OK.

Like the SG the transistor should switch on when the centre of the magnet is just past TDC and then switch off at 23 degrees.


John K.

[Les_K]

Here's a scope shot of the coils. I didn't realize it but I went back and looked at the picture from the conference and this looks identical.

Looking across the coils-2.mp4 - YouTube

Les

[Les_K]

Les, the timing should be set just like the SG. Where does the transistor fire on the SG and where should it switch off? We've been over this on BM2.

Don't worry about the current draw for now.


John K.

Sorry about that, I said "firing" since everything is inverted we are looking at the off time.
Which on this machine is a little earlier than what you showed in your video.
Bedini Monopole SSG Timing - YouTube

so if you look at yours mine is firing at the edge of the flange where yours is just into the flange. But this should be about right since this is and eight pole machine right? and so I would suppose we are talking about closer to 23 degrees here.

And Yes, I read everything you had to say and appreciated it greatly.
would have commented more but I was heavy into this build.

Les

[John_K]

Timing is just like the SG

I found some glitter stars and mounted them. I can see the timing but the video was real bad. Anyway I can see that it fires just about where the flange of the coil starts and ends just past the flange of the coil on th eother side. This is where the cap seems to dump the fastest. However this is pulling 1.3 amps and dumps at 1.7 seconds and before I made this change It was pulling under an amp and was dumping at 1.2 seconds. So I can't say I have moved in a forward direction as of yet. I'll get a shot of the scope for you...

Les

Les, the timing should be set just like the SG. Where does the transistor fire on the SG and where should it switch off? We've been over this on BM2.

Don't worry about the current draw for now.


John K.

[Les_K]

I found some glitter stars and mounted them. I can see the timing but the video was real bad. Anyway I can see that it fires just about where the flange of the coil starts and ends just past the flange of the coil on th eother side. This is where the cap seems to dump the fastest. However this is pulling 1.3 amps and dumps at 1.7 seconds and before I made this change It was pulling under an amp and was dumping at 1.2 seconds. So I can't say I have moved in a forward direction as of yet. I'll get a shot of the scope for you...

Les

[John_K]

Timing

Ok,

Now I will still get a timing led and we will be able to talk about the off part.

Sorry I wasn't able to respond sooner but I broke off a tooth. So for all JB has discovered, today I think the greatest discovery to mankind is novocaine Aaaahh!

Les

Les, with the hall you can tell when the coil is on or off easily. A LED is not mandatory to look at the timing.


John K.

[Les_K]

ouch!

Ok,

Now I will still get a timing led and we will be able to talk about the off part.

Sorry I wasn't able to respond sooner but I broke off a tooth. So for all JB has discovered, today I think the greatest discovery to mankind is novocaine Aaaahh!

Les

[John_K]

You got it!

Les,

You got it man, now just do it.

Over-lapping means he has a bigger window to play in.



John K.

Well, The super glue I got for the magnets is taking forever to dry. and I ended up using 3/4". In the meantime I think what you are suggesting John, is that the timing is a 50% duty cycle. I recall JB saying so in one of the videos. But by the look of the timing magnets and the dwell angle it looks really close to 50%. But I can't say I fully understand what he meant by overlapping...

Les

[Les_K]

Oh yes, I forgot this one...

http://www.energeticforum.com/attachments/renewable-energy/7009d1290478944-bedini-ferris-wheel-regauging-motor-dwell.jpg

Les