Will you please understand that in a circular array there are no exterior magnetic domains? thanks. it is just a question where you cut off the simulation. ...
Thanks a lot for the links, they answered a few questions. I understood it the following: ironless motors are good for high rpm, have low inductance, therefore...
Hi all, I actually had to leave rather quickly after my last post, but I built a quick file for the modeling from memory (pretty close if you ask me) . I'm...
There are certain reasons for not using the photos section but rather the files section. one is that the full resolution is only visible to you and the group ...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the lrk-torquemax group. File : /FEM/Hal...
lrk-torquemax@yahoogr...
Jan 1, 2004 1:32 pm
3923
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the lrk-torquemax group. File :...
lrk-torquemax@yahoogr...
Jan 1, 2004 1:33 pm
3924
By request I've upload to the files section. Note the femm file need to be renamed with .fem extention Cheers and happy new year Daniel...
I' looking into building a motor with a low Kv, I need it to turn slowly (2500 - 3000 rpm) at full power (and dont want gearing). I understand that I can...
If the number of stator teeth and number of magnet poles differs very much the effective area suffers. e.g. imagine a 3 stator tooth 50 magnet motor. will...
dear all and stephan, i am sastisfied to see that somebody tries better to understand and optimiser our réalisations. I followedy our calculations and Ok...
... I don't think so, it will still be there, as a ripple on output torque of the motor. ... No. Cogging doesn't use up energy or reduce efficiency. It is only...
Hi, All I’ve been lurking for a few months catching up on the great posts and data found on the LRK sites both here and in de. I’m waiting on a lathe...
hello I did order magnets ,with paypal payment and whithin one week they were arrived in France, with some extra free magnets not useful for motors ( square...
... Don't excuse yourself for your English, it is very well understandable (maybe better than mine sometimes) and you are trying, others don't. First, thanks...
I think the shape would have a big effect. I still couldn't get my damn simulation of a round motor to work (not the triangle has no error but doesn't...
Hi Steve and all, One lrk bible you'll find in the links on the homepage: http://www.yahoogroups.com/group/lrk-torquemax/ The other 'bible', in paper and in...
... No error, you are correct. The benefit of more powerful magnets is that fewer turns are required, so resistive losses are reduced. I went over this in...
Hi Ron and All, Thank you Ron, for your time and assistance. Yes, I have been to that bible many times, but the one I was refering to was in someones reply in...
Hello, BTW: estimated weight of my design study of a Halbach MiniLRK: 91g (without copper) Mass of magnets: 30g Any ideas on possible design improvements...
91g is ok i guess... a speed 400 has 74g, it must put out more power then ;-). If the things are like the sim says we should theoretically get up to 100% more...
dear stefan I have no much time tonight but see on"why does the Torquemax rotate so slowly and forcefully" of Peter rother (2001);articles yoahoo groups i have...
All my books say the force F = i*l x B, where l and B are vectors, i scalar, x is the outer product. l is the effective length of the conductor in the field. ...
... You could use 4x1x15 magnets instead of 4x4x15. You would need to get half magnatized along the 1mm axis and half along the 4, but that should not be a...
And it would maybe not work as well. you need the cross section to conduct the flux i think. i will simulate this, but i don't expect a halbach works this...
I have done lots of searching and reading. I have seen at least 2 dozen documents saying the torque or force in the air gap is proportional B (first order). ...
... Roland, the url must be <http://www.torcman.de/peterslrk/Warum_dreht_er_so_eng.html> this is the page i am commenting on. It is the only source with B^2. ...
stefan, your Pb take my head! .Which is the bring-force of the electromagnet?is not it: B^2s/8pi ?or something like this. I will looke for tomorow . Roland. ...
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