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Trait
New Member
USA
39 Posts |
 Posted - 16/04/2009 : 6:43:05 PM
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Hey guys,
I've had another idea I'd like you to look at!
This came to mind after getting my monopole bedini motor running well. (Thinking of the next project and all...)TEEP, I hope you get a chance to look at this. I've got a great deal of respect for your experiments and I'd really like to hear your thoughts.
Please excuse the poor drawings, I think you all get the idea.
That rotor will sit inside an air coil (shown on the right similar to a newman motor.) and have the shaft protruding for timing of pulses. (The shaft will have to be split with a non conductive center so I can power the rotor.)
I'll use bedini circuits to drive it, and I'd like to work out a way to use that rotor as a generator too by exciting it and collecting the energy. We could pulse it, collect the radiant and collect the generated voltage as well. (would need a fly wheel though...)
Think it's worth building?
Thanks a ton guys!! Looking forward to hearing what you think!
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Trait
New Member
USA
39 Posts |
Posted - 16/04/2009 : 7:41:36 PM
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I've drawn out the circuit for running/generating. I THINK that should work... I'd probably use a relay or two so everything switched at the same time for generation or running. I'd also add a flywheel on the other side of the shaft to store up energy.
Thanks guys! |
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teep
Forum Admin
United Kingdom
347 Posts |
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Trait
New Member
USA
39 Posts |
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Trait
New Member
USA
39 Posts |
Posted - 20/04/2009 : 1:15:03 PM
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I've gone ahead and purchased the rotor parts.
Anyone know if air coil form will have a significant effect on performance? I'm wondering if I should make a rectangular form for my air coil to closer match the rotor, or just leave it as a circle like TEEP's.
Thanks for your thoughts guys! |
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Trait
New Member
USA
39 Posts |
Posted - 26/04/2009 : 3:41:43 PM
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Hello again Teep,
I feel like I'm missing something vital with the Newman motor... Since you've built one perhaps you could explain a little more about the design and the secret behind it...
I've heard that the newman harnesses the BEMF from the coil and uses it to increase the motor's power... But from many of the replications I've seen, I see nothing more than a coil with a switch on the rotor to energize. The BEMF isn't directed anywhere. Is the BEMF just PULLING the opposite side of the rotor towards the coil?
Thanks in advance for the insight... I think it will help for the model I'm putting together.
Note: I hit a road block on my rotor when I got a quote to have it machined... It was nearly $200 so I've ordered an acrylic bar and will do the work myself ASAP.
Thanks guys! |
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BiDaDiKuNuKu
Advanced Member
Netherlands
333 Posts |
Posted - 26/04/2009 : 4:16:17 PM
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hi Trait,
Note: I hit a road block on my rotor when I got a quote to have it machined... It was nearly $200 so I've ordered an acrylic bar and will do the work myself ASAP.
try to make all with wood or plastic...try 2 use any household item when possible.
or go to a hardware store/secondhand store...here u can find all kinds of good stuff 4 building these things at a fairly cheap price...:)
Peace!
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Trait
New Member
USA
39 Posts |
Posted - 13/05/2009 : 6:48:41 PM
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Hey guys,
Just a quick update here.
I've drawn up my coil form for the motor and am getting a quote for a rapid prototype on two of these.
I'll use 5/16" all thread to hold them in place at the tabs, and use nuts to adjust height.
I've got the acrylic in and am going to cut and drill press it soon.
Looking forward to getting this running!
Aaron |
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Trait
New Member
USA
39 Posts |
Posted - 14/05/2009 : 10:45:40 PM
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Another update!
Got a quote for a rapid prototype of my coil forms. It's $50 for two. (I think I can live with that! lol)
Here's a model I put together of the main design. It's missing wiring obviously but you can see what I'm shooting for now.
Feel free to give me feed back! I'd love to perfect the thing before I buy all the pieces!
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comwarrior
Moderator
United Kingdom
477 Posts |
Posted - 18/05/2009 : 12:50:57 PM
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I'm wondering if you could run 4 coils on that?
It seems a simple enough... but their would be a slight space issue where the virtical windings cross over the horizontal...
"Energy can not be created nor distroyed, it can only be changed into other forms" - so lets do some changing! |
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Trait
New Member
USA
39 Posts |
Posted - 18/05/2009 : 10:05:42 PM
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| 4 Horizontal coils? Probably. The coil forms I've had made are about an inch tall. The rotor should be no more than 5 inches from coil end to coil end. I'll excite the rotor through the shaft to drive it. |
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comwarrior
Moderator
United Kingdom
477 Posts |
Posted - 19/05/2009 : 08:14:39 AM
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I meant, 2 horizontal and 2 virtical...
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"Energy can not be created nor distroyed, it can only be changed into other forms" - so lets do some changing! |
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Trait
New Member
USA
39 Posts |
Posted - 19/05/2009 : 4:25:46 PM
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| I could probably add to the coil forms to allow another coil to wrap around those two. I think best case would be to have another coil slide over the two horizontal on each side. So you could remove the coils like these two can. It will make it alot easier for me to try different coil gauges and windings. |
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comwarrior
Moderator
United Kingdom
477 Posts |
Posted - 22/05/2009 : 7:15:32 PM
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here is another idea...
if in each coil form you use a bifilar wind you can have two independant drive systems using just the two coil forms...
or, if you use both my surgestions then you can have 4...
Thinking about it, if you did it right... you could have a hell of a lot of independant drive coils...
Darn it, now i want to build one... curses to you... lol
How fast can your rotor spin?
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"Energy can not be created nor distroyed, it can only be changed into other forms" - so lets do some changing!
95% efficiency, I dare you to do better!
http://www.youtube.com/user/comwarrior69 |
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Trait
New Member
USA
39 Posts |
Posted - 22/05/2009 : 8:33:23 PM
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Hey Comwarrior,
The unit's still in design phase... (I'm waiting on parts.) I'm DIEING to make the thing!
I just received my 3 lb spool of 31 awg wire so I'm set for winding now. The acrylic bar for the rotor's here and cut. I just need to drill it to spec.
I'm still waiting on the rapid prototype coil forms from the shop. They should be here late this month or early next.
I'm also thinking of adding a good sized fly wheel on the system to get some generation out of it along with all the BEMF harvest. |
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comwarrior
Moderator
United Kingdom
477 Posts |
Posted - 23/05/2009 : 06:27:23 AM
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i was in the gararge and i suddenly saw some plastic U channel and i couldnt help letting my mind wonder and build exactly what your building in my mind....
I still amazed that you had it manufactured though... i hope its worth it...
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"Energy can not be created nor distroyed, it can only be changed into other forms" - so lets do some changing!
95% efficiency, I dare you to do better!
http://www.youtube.com/user/comwarrior69 |
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Trait
New Member
USA
39 Posts |
Posted - 23/05/2009 : 08:22:40 AM
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Because it's a rapid prototype, it's fairly reasonable. I found someone doing it for about 8 US dollars per cubic inch, and a coil form was 3.3 cubic inches.
I bought the first two to see how it works rather than deal with sloppy craftsmanship on my part. I don't have a full tool set at my disposal yet to make clean projects.
I'll keep you posted on my progress as it all comes together! |
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Trait
New Member
USA
39 Posts |
Posted - 07/06/2009 : 9:06:47 PM
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Once again,
Trouble getting forms made so I've moved on to plan C. I've purchased 1/8th inch craft basswood and cut the form pieces out to glue together... Not as pretty as I'd like, but functional.
I've finished winding the first coil at 1000 turns of 31 AWG wire.
Coil resistance is 178 ohms.
I'll wind the next coil as soon as my arm stops aching from the first coil LOL
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comwarrior
Moderator
United Kingdom
477 Posts |
Posted - 09/06/2009 : 8:05:57 PM
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trait...
depending where you are in the world... you can buy lenghts of plastic channel...
Any reasonable sized model or craft shop should have it...
This is a link to a UK RC model shop that does a very nice range of plasti-card and plasti-forms which includes H I and U sections... http://www.cheshiremodels.co.uk/acatalog/Plastruct.html
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"Energy can not be created nor distroyed, it can only be changed into other forms" - so lets do some changing!
95% efficiency, I dare you to do better!
http://www.youtube.com/user/comwarrior69 |
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BiDaDiKuNuKu
Advanced Member
Netherlands
333 Posts |
Posted - 10/06/2009 : 07:29:35 AM
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hi m8`s,
nice coil there Trait...don 4get 2 smooth out the edges with sand paper be4 winding tha wires...this way u dont damage tha wires :)
nice link there comwarrior...just saved it...i might need it in tha Future :)
Peace! |
Edited by - BiDaDiKuNuKu on 10/06/2009 07:30:18 AM |
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Trait
New Member
USA
39 Posts |
Posted - 10/06/2009 : 08:25:15 AM
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Thanks for the comments guys,
I've saved that link, it looks like it could save a lot of time and trouble!
I'll wind the second coil soon and begin winding my rotor after that.
I think I'd like to try to make a black sand core with epoxy so I can install a 1/2" bolt in the bottom for mounting in my rotor.
Anyone have experience making a core other than the standard welding rod core?
Thanks in advance guys!
Can't wait to show you all the final product and start testing! |
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BiDaDiKuNuKu
Advanced Member
Netherlands
333 Posts |
Posted - 11/06/2009 : 12:30:45 AM
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hi Trait,
np, u r welcome...i did make ma first core(s) with nails...and it work pretty good.
heres tha url http://www.sunshinebonaire.com/Bedini-Motor/Bedini-Motor_1.html
u cant see the nails but its working :)
i think there is some pics of it somewhere in my thread...
oke here u can see tha nails http://www.sunshinebonaire.com/Bedini-Motor/Bat-Swap-Coils_2.html
these coils didnt work becoz the wire is cooper but tinted cooper.
yep...i made alot of mistakes...but learned from all of them...i hope ;)
but i did not use thick ones...don remember but i think i`ve used like 50 or 60 in the core.
hope this help
Peace! |
Edited by - BiDaDiKuNuKu on 11/06/2009 12:43:06 AM |
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comwarrior
Moderator
United Kingdom
477 Posts |
Posted - 13/06/2009 : 06:47:31 AM
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Trait, iron filing - epoxy cores are pritty simple... it may take you a few attempts though to get it right...
use some SLOW setting epoxy, 4 hour set time...
mix it up and then start adding filings. keep adding filings untill it is packed with filings and can not absorbe any more...
Spoon mixture into the mold or core and pack don tightly ensuring their are no bubbles...
Leave in warm dry place for 12 hours... yes 12 hours to go seriously hard..
my advice is to do a couple of experiments first so that you get used to doing it...
Bida,
Looking good
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"Energy can not be created nor distroyed, it can only be changed into other forms" - so lets do some changing!
95% efficiency, I dare you to do better!
http://www.youtube.com/user/comwarrior69 |
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Trait
New Member
USA
39 Posts |
Posted - 13/06/2009 : 8:48:12 PM
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Thanks Comwarrior.
That's just what I was wondering about. I may try that and see how I do!
Thanks,
Aaron |
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comwarrior
Moderator
United Kingdom
477 Posts |
Posted - 14/06/2009 : 07:43:04 AM
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the other way of doing it is to fill your mold with filings packed tightly in and then run in a load of thin superglue...
The only problem with that approch is that it's pritty perminant and does not allow you to eze get it out of the mould...
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"Energy can not be created nor distroyed, it can only be changed into other forms" - so lets do some changing!
95% efficiency, I dare you to do better!
http://www.youtube.com/user/comwarrior69 |
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Topic |
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New pulse motor idea.
