current was a paltry 10ma

I just took new readings on my coil today.  It's the coil from my live video stream.  I took the readings with the motor running.  It was showing between 30mV and 15mV.  The mA readings were between 1mA and 1/2mA.  Do not judge your coil by it's voltage and mA.  When I build the coils the only thing I really care about is the coils electromagnetic ability.  If you have a coil making 100mA or more but no electromagnetic effect you end up with a nice galvanic battery.  I also want to point out that I am not just talking about the natural compass attraction to iron when I speak of an electromagnetic effect.

I really enjoy seeing all the great pictures.  They are very interesting.

To Rosemary Ainslie:

Why do you post such things? Its like you are trying to start an argument with someone....Yeesh! Maybe you can post this stuff on threads that YOU have started and then we know not to bother reading there...How immature.

J.

If the truthbeknown - it's possibly not the most perfect likeness.  I feel that the old lady's been shown to some considerable advantage - and the troll seems to be somewhat overweight from a general excess of the good things in life.  If it's offended anyone - then let them sue me.  I refute that it's off topic.  I think that's a rough sketch there of laser's rig.   I think that was the general reach.  Somehow.

And no I'm not starting a quarrel.  I'm simply exercising my freedoms of expression. 

Jesus - thanks for the re-assurance on the coil.  I actually went and bought my first 'pinchers' 'tweezer' type thing - and have sorted out the kink in the nichrome.  Unfortunately at the cost of breaking that pratley number again.  But if the glue holds on the frame - then I'll just glue the chip back.  It's a bit messy.  LOL.  Am learning ever escalating respect for all you guys with your neat builds.  My excuse is that I'm an amateur. 

Nice values there Laser.  I'm looking forward to 21st.  I think that's officially the start of our spring, your autumn and it will take your rig well past it's first season of uninterrupted motion.  It's really very good news.  And thanks for tolerating that 'off topic' number.  I just needed to get some light relief from the frustrations of building.   

Regards,
Rosemary
edited.

 

This coil is the only thing of importance here...........I have stranded wire eqivalent to 15awg........... I used this in place of solid wire....but no readings and no magnetic fields    ....bare coppper not insulated with cotton............I think the bare copper has to be insulated individuallly by the cotton .......magnetic drive is the way to go............shylo

Hi shylo.  Can't quite understand you.  Are you saying that the stranded copper doesn't work?  That's good to know.  But weird if it's the case.  Just another one of those strange things about this rig.

Would love to see your build if you're up for it.  By the way - I think that Ted has put his coils in parallel and I think I'm going to try the same.  But I'll try series first.

Regards,
Rosemary

In the unlikely event that anyone's following the saga of my build - the Pratley discs HAVE NOT STUCK - the glue has NOT SET - and clearly - if Divine Providence is responsible - then I think I'm being told to 'give up'.  LOL.  I have no intention of listening to this advice - not yet.  But I'll defer to some expert opinion here and try something a little more standard. 

Regards,
Rosemary
 

Hi Rosemary,
Looking at the picture of your coil, it seems that your copper wire is very close to your steel wire. What are you using to insulate the two from each other? Are you using magnet wire?

Ted

Check your PM.

Nice!

And it won't roll off the table 

I said this because squares are easier to produce than circles.  You can use whatever you have laying about.

Bill

PS  As a matter of fact, one could use 1 foot x 1 foot square end caps and install multiple coils into it.  Wind the coils and then install them into an array unit of sorts. Hmmm...I will have to try this.