Search found 479 matches

by APL
Nov 15 2019 1:51pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

I've tried the screen print option before, years ago, but never got it to work. Didn't do the Ctrl. though. That's the problem with this PC stuff, you can be one click away from success and not know it. I'll try a little harder to get it figured out today, since I was mostly annoyed and didn't give ...
by APL
Nov 14 2019 4:30pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Things are getting easier, except for the precision part,.. I'm just shooting for the looks at the moment. I think I can go back and change things,.. maybe not. But this is mostly for practice. Figured out the color thing, and some other stuff, but I can't seem to figure out how to export a screen p...
by APL
Nov 13 2019 2:01pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Thanks! I'm using the DesignSpark Mechanical program. Youtube; https://www.youtube.com/results?search_query=designspark+mechanical Yes, there is much frustration,.. since I make so many mistakes I have to constantly go back to the previous step, but many times it will go too far and lose some of the...
by APL
Nov 12 2019 4:56pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

First rendering of the axle and plate,..pretty rough, and not really precise, but hey, it's something. Had trouble keeping the two objects on the same plane, and I couldn't get the color to change, but it's start. Cores are probably going to spank me good. :confused: Cad 1..jpg Also have to figure o...
by APL
Nov 12 2019 1:09pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

I finally got the new PC, loaded up the program, overcame some wifi problems, and am finally able to experience the grate headache we call cad design. Learning curve is a bitch, but I'm making headway. Nothing to show yet though. Most of the stuff is pretty straight forward, and I don't get to much ...
by APL
Nov 10 2019 4:07pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

If you look at the second photo you can see an indentation or groove on the left and right sides of the two SMC cores. When these two groves are in the gap between the segments, theres enough room for a long tubular threaded nut to go down in between them, and some kind of washer/holder on top to ho...
by APL
Nov 08 2019 2:24pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Haibach array's are nice if you can pull it off, but the reality is that its not that easy to do. Custom made magnets are in order, and planning for fitment is crucial. Allowing for glue filler if they are tight fitting, as anything will throw off the 360 degree fit. This thread is mostly for us sho...
by APL
Nov 07 2019 2:00pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

It's a bit confusing, and I'm not too sure about any of it, but one thing to keep in mind is the fact that most motors in the past have been made with laminations. When laminations are used the end wires have to protrude past the core on the ends because you can't make a lip there, as the lamination...
by APL
Nov 06 2019 10:43pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Heres also a flux density image of those cores, and the original link, in case anybody interested.
Computed flux density.png
Computed flux density.png (78.68 KiB) Viewed 353 times
Composite Axial motor. https://www.semanticscholar.org/paper/A ... aa8a59553c
by APL
Nov 06 2019 10:24pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Madin88, I like both of those links. The first picture, with the organic looking SMC cores takes core design to the next level. Something that can't be done with laminations, and I imagine with a lot of simulations and coil winding technique could be taken even further,.. more organic,.. almost like...
by APL
Nov 05 2019 2:24pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

I don't think we've covered the LaunchPoint motors, unless I missed it. So I'll include it,.. just because. Most of you have probably seen them for quite some time, but I just ran across it. Typical air core Halbach style. But this one is interesting in the fact that it's in a in-runner fashion. Tal...
by APL
Nov 05 2019 2:07pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Thanks stan.distortion, thats just the kind of info I need as I've just started to crack the door open into this world. But It seems like I keep running into a need for one every time I turn around. I could have REALLY used one on this last motor. Making a spacer for bonding the magnets would have b...
by APL
Nov 04 2019 3:10pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Thanks Dui, ni shuo de dui, wow, if thats a quick rendering then you'r fast! I like the way you think,.. I was saying something like that a few post back. I was thinking six pieces that fit in between the six spacers. Perfect for 3D printing, and can be changed out and experimented with. I have a bu...
by APL
Nov 03 2019 1:34pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Large mid-drive motors don't usually need a lot of cooling, unless your a power hungry fool. (I'm afraid I might be becoming one soon) Small RC motors seem to need extra cooling. (usually bottled up in a case with lots of gears) Hub motors are most always overpowered, and could use more cooling, esp...
by APL
Nov 02 2019 9:14pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

I did this experiment quite a ways back, you can see the slope at the top of the scale, heat goes up and magnetism goes down. Unless I'm missing something, makes sense to me. But it's a well known fact that the colder a conductor is, the less resistance electricity has to flow. The opposite should b...
by APL
Nov 02 2019 12:52pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

I probably spoke to soon about single sided weight, sorry. I'll have to take a look at Jesica's papers and provide the link. I would think that dual rotors have better power density, but nothing can be assumed in motor world, so that needs a closer look too. But I know for a fact that cooler copper ...
by APL
Nov 01 2019 8:01pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

True, there may not be a need for a fan, but cooler copper 'is' more efficient, and since theres room for fan blades and they can be added without too much effort, then it's a no brainer. It doesn't hurt to learn about fan-tech for future designs, the general education of present and future readers,...
by APL
Nov 01 2019 1:32pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

I found this link with blower calculators for radial and centrifugal, it also has a lot of general info on all sorts of things in the left column, and I think calculators for each. But I was disappointed to see a price tag attached. Still, lots of good free information. Calculators; http://calqlata....
by APL
Oct 31 2019 9:24pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

A lot of information, but not much is relevant to this motors needs, mostly for blowers. It comes down to curved back, radial, and curved forward blades. Just going to have to play around with it and see what works best for this. I'm thinking maybe I could 3D print six fan sections out of ABS so the...
by APL
Oct 31 2019 2:43pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

I should have known,.. nothing is simple anymore. Theres a lot of science behind centrifugal blade types and uses. Blade designs.png Forward, backward, radial, and more. Speeds, pressures and noise levels, I can see why my first attempt at a fan blade failed, having payed no attention to any of this...
by APL
Oct 30 2019 9:46pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Might be a few millimeters though, now that I look at it. Should be enough?
Stator core spacing..jpg
Stator core spacing..jpg (63.96 KiB) Viewed 462 times
by APL
Oct 30 2019 9:38pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Very nice Thecoco974! Have you given much thought as to the angle of the blades? And also, should they be pushing air in, or pulling air out? Or does it make any difference? I think your right Dui, ni shuo de dui, the rotors are already throwing air outward, and the blades should be reversed so that...
by APL
Oct 30 2019 2:24pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Finally have a line on a new (refurbished) PC, but the acquisition is taking time. Tower, new OS, and nice big monitor. :) One of the loose ends on the new motor is the spacer design. The last motor had spacers that were unidirectional, but thats not really necessary, and although they looked nice,....
by APL
Oct 27 2019 1:47pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

I'm on it. Probably will have something within a week or so, and I'll be push'n and pull'n graphics all day long. At least for this DesignSpark Mechanical program, the system requirements are rather puny so anything will work. (except for my backup PC which makes an abacus look modern.) Don't want t...
by APL
Oct 26 2019 12:30pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 812
Views: 39723

Re: APL's DIY axial-flux motor

Thats OK, I'm working on getting a Windows 10 unit, that should cover all the bases. Windows is not my favorite, but I can deal with it, I've had plenty of Windows OS's. Mac is relatively new for me, but I like it because it seems less problematic. Since it will be a stand alone PC for this, I don't...