Search found 546 matches

by APL
Feb 21 2020 10:41pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

The magnets are staring to line up, and looking little more like I wanted them too. It's like doing a mosaic. Theres a few pieces that need to be re-done, but for the most part, it's going along pretty good. Developing an M.O. is most of it. I can't recommend doing it this way to anybody else,.. to ...
by APL
Feb 21 2020 9:48pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

I see. The sinusoidal EMF is a good point, cars have lots of electronics, and of course, the radio. I think the old military planes had 400 htz systems, to make their radios quieter. Cost reasons is another good point,.. high production parts. I've been looking for axial motor FEMM's, to try and see...
by APL
Feb 21 2020 1:53pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

OK, one down,.. but now your alternator picture is bothering me. How is it that it has trapezoid rotors, but straight
stators? (at least, appears to.)
by APL
Feb 19 2020 2:59pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

OK,.. toothed rotor. Theres an air gap there, I missed that. I thought that the armature windings and rotor were one piece. Now I get it. I was about ready to give up. :) So it's a radial, and the field windings control weakening or enhance the field. The armature coils don't pictorially make much s...
by APL
Feb 19 2020 2:17pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Still having a little trouble, the rendering lacks detail, The sides are stationary, the field windings, (not shown in detail), are powered form outside, and the armature with the coils spin? Or does the armature and coils stay stationary, and the sides spin,.. the field windings being induced by th...
by APL
Feb 18 2020 1:42pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

It's a bit confusing, because it doesn't seem to be divided into the usual poles or segments were used to seeing. At least, they aren't showing any magnetic separations, but there probably is. The picture is pretty basic. When I look at the coils in back, they appear to be only half wound. :!: hybri...
by APL
Feb 17 2020 8:24pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Found this motor the other day, but I haven't deciphered it yet. The side rotors get induced somehow to produce a resulting magnetic field. The coils fit into the groves in the side poles, and the core fits up against armature. Not sure how the pink magnet works, or the armature. The motor is suppos...
by APL
Feb 17 2020 2:56pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Back to these guys again,.. I keep rolling ideas along for using simple magnet shapes. Some of the of the newest ideas are a dual coil core,.. or concentrated winding, that use same direction poles,.. and multiple SMC contoured back iron piece's that have 'steps' built into them for the magnets to b...
by APL
Feb 17 2020 2:22pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Shop-time has been scarce lately. But the spacer rings are being printed, and I don't want to make too many magnets without them, to make sure of the fitment. So I've been making simple fixtures to make the process easier, and practicing the technique. I remade the aluminum holder for 20P, and just ...
by APL
Feb 12 2020 3:05pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Thanks for the support! It'll work, maybe not the best, but I'll be rollin down the road,.. and improvements can always be made. I think this motors going to rock! :) I'm more interested in finding a motor platform thats relatively easy to make, and move out from there. The ES is about information, ...
by APL
Feb 11 2020 11:16pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

I learn things by experimenting, and trying to solve problems. Just buying our way out yields little knowledge. I've learned a lot in the last few days,.. mostly not to try to do this. :lol: It would be a feather in my cap if I can make my own magnets, so I'll keep trying for a while, wouldn't want ...
by APL
Feb 11 2020 2:17pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Get one thing figured out, and another pops up. Fechter was right about grinding magnets,.. it does diminish their power. But I'm not sure whats doing the damage,.. when I took the temperature immediately after grinding, it was never above 70 degrees. So maybe the vibration, along with momentary hea...
by APL
Feb 10 2020 4:57pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

After thinking about it some more, I think a good plan would be to 3D the spacer, and then glue the bottom and top magnets in first, since they will be far enough apart as to not affect each other,.. place a small spacer in between them to make sure the inside magnets will fit. There won't be any st...
by APL
Feb 10 2020 3:36pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Well, it's good to know that I didn't have a brain fart, and get the wrong magnets or something. I just wasn't ready for the repulsion thing. Still boggles my brain. I was hoping that the attraction to the back iron would diminish the effect stan,distortion, but it only helps slightly. I can just ba...
by APL
Feb 09 2020 9:08pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

I had a rude awakening when I realized that the segments were aligning north and south. I had assumed that they would naturally align all N on one side and S on the other, just like any other trapezoid. Now I see what you mean when you say they don't want to go together. Thought you meant the whole ...
by APL
Feb 09 2020 3:03pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

I'll have to keep an eye on that. I can feel some heat while sanding, and switch sides often, but it may still be robbing some magnetism. I'll try dipping it in water often too. These things are extremely strong though, and I can probably stand to loose a smidgen. Wtuber turned me on to a link for p...
by APL
Feb 08 2020 8:56pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Good idea doing one row of segments first, makes getting everything lined up and the correct orientation easier, and lock's it down. Easy to check everything once they're dry, and possibly change something if needed too. It's going to take some thought, and a little practice for sure. I managed to m...
by APL
Feb 07 2020 11:10pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

I haven't snapped to many yet, but I scored these all the way around, and they didn't take any effort to snap at all, clean and straight too. Of course, I have a lot to brake yet,.. so I'll have to wait and see... Keeping the magnets straight, N and S, is going to be a little hard, for sure. Plus, I...
by APL
Feb 06 2020 8:32pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

I managed to get all the spacers made. I left a few millimeters on the ends, for later,.. once the motor is together I'll have to sneak up on the air gaps by milling the spacer length. Theres a 'step' on each side of the top of the spacer, for the fan segments to be attached to. 24 - 3mm screws to h...
by APL
Feb 06 2020 8:15pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Good to know though,.. this motor isn't refined enough to worry about it yet. I had thought about using 1/8" x 1/8" x 1-1/2" long magnets, and bonding them all together like the photo above, for a home brew version, but they are not common, so the price is high, and it would be hard to align all the...
by APL
Feb 06 2020 2:34pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

A little more about segmented pole magnets, this add for custom made magnets talks about it a little bit, and mentions something about a specific glue used to insulate, and bond them together. I've read about the glue before, but haven't found references to what brand it is, or whats 'specific' abou...
by APL
Feb 05 2020 2:21pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

I think they made the 'Flux Capacitor' out of plasma.... :confused:
by APL
Feb 04 2020 1:27pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

OK, that one was pretty big, heres a little smaller one, an 8' x 2" neo. thats just plain scary. A lot of you have probably seen brainiacc75's video's, but if not, then check it out. https://www.youtube.com/watch?v=yM4Xe2c0B8M Graphene is a really promising material that is making it's way into the ...
by APL
Feb 03 2020 3:30pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

We need more magnets like this! 13.5 T!!! Might take a bit of power though... :lol: https://home.cern/news/news/engineering ... n-record-0
smc-magnet_1.jpg
smc-magnet_1.jpg (155.87 KiB) Viewed 686 times
by APL
Feb 03 2020 3:04pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 959
Views: 74177

Re: APL's DIY axial-flux motor

Haven't heard that about N52 magnets. A little late now though, since I just sent off for some. Never fails! :( Well, they 'say' N52, but who's going to know if their not. I don't trust any advertising anymore, at least, on the Bay. I'm sure they will be fine.. same as the last cheap magnets I bough...