Search found 248 matches

by APL
Mar 22 2019 8:07pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

A little more progress,.. getting started on the caps. Slicing off a piece of 3.5" aluminum bar, makes me glad I bought the band saw. Cap cut.jpg After some lathe work, the drive cap is ready for mounting screws. It locates off the bearing on the bottom side. A nice thing about the cap is that it ca...
by APL
Mar 21 2019 8:49pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Music Barrel
Replies: 3
Views: 92

Re: Music Barrel

Nice build, and very elaborate! I hope you don't plan on playing loud music while your riding though,.. I'v always been completely annoyed at people that want to invade my right to a have a nice quiet ride,... with their I-phones and speakers. As if I want to listen to it. Thats what ear buds are fo...
by APL
Mar 21 2019 1:03pm
Forum: E-Bike General Discussion
Topic: Any tips to power a bicycle with a hub motor from a scooter?
Replies: 9
Views: 155

Re: Any tips to power a bicycle with a hub motor from a scooter?

An awful lot of work to try and spoke it, and I don't think the axle will match your bikes dropout spacing, plus it will be seriously underpowered and might over heat, as fechter has stated. Just has a lot going against it that way. It might fit under the bottom bracket, and swing from the crank axl...
by APL
Mar 21 2019 12:36pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

I was hoping nobody would notice, but yea, thats where the design came from,...

I can't slip anything past you guys on the ES! :confused:
Jetsons buildings.jpg
Jetsons buildings.jpg (26.14 KiB) Viewed 52 times
by APL
Mar 20 2019 12:37pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

Yes, so true larsb,.. I hope it goes smoothly, but it will probably drag me through the usual briar patch of problems. Sure hope not. Plus, if and when it does work, I want to put it on my bike and ride it for a while this summer, to see what it can do. After that, I'd like to tear it down and try t...
by APL
Mar 19 2019 8:07pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

Spacers are taking a lot of time, but are finally starting to come around. Tight tolerances, and just trying to find a 'look' that I can live with, is a slow process. Spacers.jpg I have them set for 1mm air gaps on each side, but thats just a guess at a place to start. Doesn't seem to be a lot of so...
by APL
Mar 19 2019 2:02pm
Forum: Motor Technology
Topic: Help Hookup MY1020 Motor & Controller for Go Kart
Replies: 7
Views: 130

Re: Help Hookup MY1020 Motor & Controller for Go Kart

Controller is made by Kunray, couldn't find the exact model, but it's a 12 mosfet. Found this site for Kunray controllers, and has other 12 mosfets with lot's of wire connect info. https://www.aliexpress.com/wholesale?catId=0&initiative_id=AS_20190319104735&SearchText=kun+ray+controller Also might b...
by APL
Mar 17 2019 8:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Long tail cargo bike build
Replies: 40
Views: 1797

Re: Long tail cargo bike build

Great job handbaked! Looks like you were very successful. :thumb: Glad I could help out.

Everything looks just as it should, and if you paint anything else, things will go a bit smoother,.. congrats on a new skill.

Awesome pictures! Now comes the fun part,..putting it all together! :)
by APL
Mar 16 2019 12:55pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

It won't be very hard to take this motor apart,.. it doesn't have the radial motor's dreaded 'stator suck' that makes them such a pain in the ass to get apart. The rotors will have threaded holes for bolts around the diameter, and I can just 'screw' the magnet array apart, and back together. I know ...
by APL
Mar 15 2019 9:37pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Long tail cargo bike build
Replies: 40
Views: 1797

Re: Long tail cargo bike build

Good choice on the mask, and a suit is always good too. It's good idea to use some goggles, but they might not last very long, paint gets on the outside, and sweat gets on the inside fairly fast. I've always used cheap plastic safety glasses, but the gog's are better, if you can get them to work for...
by APL
Mar 15 2019 8:53pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

Started on some spacers, I have my fingers crossed on how they will look. I decided to try a large diameter scoop cut that will direct air onto the center of the coils, in either direction of rotation. Spacers.jpg Not the original plan, butI'll give it a try. I can always make more. Rotor spacers.jp...
by APL
Mar 15 2019 12:55pm
Forum: E-Bike Technical
Topic: Calculating Battery Life based on voltage
Replies: 12
Views: 222

Re: Calculating Battery Life based on voltage

I've always used the battery voltage for the 'gas tank'. You know the full voltage,..so like you say; determine the low,
or cut out voltage. Then divide the difference for the middle.

Now you have full, empty, and half tank,.. what more do you need?.
by APL
Mar 15 2019 12:34pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Long tail cargo bike build
Replies: 40
Views: 1797

Re: Long tail cargo bike build

I mentioned it before,.. but I'll say it again, so I can sleep at night,.. paint fumes in an enclosed area are explosive. :flame:

You'll need to ventilate that container somehow,.. to be safe.

Good luck on your paint job! :thumb:
by APL
Mar 13 2019 9:08pm
Forum: Motor Technology
Topic: Winding Varnish / Electrical Insulation Coating for Motor Repair?
Replies: 9
Views: 250

Re: Winding Varnish / Electrical Insulation Coating for Motor Repair?

Don't know if it will help, but have you seen.. or used the liquid electrical tapes? I haven't used them, but always wondered how tough they were. Might be thick enough to fill in a void? gardner-bender-electrical-tape.jpg Theres also Plastidip, which I have used, and is pretty tough,.. good for pai...
by APL
Mar 12 2019 9:03pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Long tail cargo bike build
Replies: 40
Views: 1797

Re: Long tail cargo bike build

Yes the two knobs on the gun are the 'fan',.. I think the side one on that gun,.. and the paint flow adjustment knob. The one on the back of the gun adjust's how much paint comes out the tip, or nozzle. That''s the important adjustment,.. the knob in back. Usually you turn it all the way in, or righ...
by APL
Mar 12 2019 8:17pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

Finally got enough machining done to do a test fit, and see where I'm at with things. Definitely wider than I wanted. It's about 2-1/4" wide now, and I see lots of things I could do to make it thinner. But for now, I'm just going to continue to finish it up, and give it some juice. :bolt: :bolt: :bo...
by APL
Mar 12 2019 12:37pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

Thanks larsb, certainly more work than I had thought, but mostly because it's the first,.. if I were to do it again, things would go smoother. Defiantly learning a lot with this build. So many little mistakes, in the end they all add up,.. I'll be lucky if it doesn't shake itself to death! One big p...
by APL
Mar 10 2019 2:10pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Long tail cargo bike build
Replies: 40
Views: 1797

Re: Long tail cargo bike build

That looks good handbaked, a small gun is best for bikes, since they're just skinny tubes, and most guns are made for cars. I would suggest turning the 'fan' knob all the way down,.. maybe open just a crack. Then turn the air pressure down as well, to conserve air from your compressor, and to be mor...
by APL
Mar 08 2019 9:27pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

Weathers finally warming up again, and I can get back out into the shop. I made some headway on the rotor and back iron ring,..one side anyway. Rotor and Back iron.jpg The back iron recesses into the rotor to keep everything balanced. I'll need to put some ventilation holes in the rotor yet, but the...
by APL
Mar 07 2019 1:16pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

I wish!!! Just one size notch, and everything lines up perfectly,..amazing.

When I think of all the trouble I had to go through, and this thing just spits it out,... :x
by APL
Mar 06 2019 9:51pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Long tail cargo bike build
Replies: 40
Views: 1797

Re: Long tail cargo bike build

What kind of spray gun are you going to use? And how big is your air compressor? You will need to devise a way to hang your frames, so that you can spin them around for painting, just an eye hook and swivel will do. Plus, you will need to have a place to move them to, once they are painted. Make som...
by APL
Mar 05 2019 7:20pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

I would have never thought of making an axial stator array like this!

https://www.youtube.com/watch?v=XgUky1jUOW0
by APL
Mar 05 2019 1:56pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

Another cold snap, and a stove pellet shortage,..I'm ready for spring! But I was able to at least get started on cutting out the rotors. I had to buy 12x12 flat stock this time around, and the lathe is to small, so I had to cut them out the hard way, and double hand wheel it on the mill. A bit tedio...
by APL
Mar 03 2019 2:04pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

That's to bad,..in a Halbach theres no room for error. I guess this is another reason to go with custom made magnets like madin88 suggested, then at least we get what we want. Well, now that I know,.. I could order the next larger size, which would be undersize, but slightly larger than the cores I ...
by APL
Mar 02 2019 1:56pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 236
Views: 6729

Re: APL's DIY axial-flux motor

After looking at the circuit for a 21/22P arrangement, I think I can see what they're talking about,.. it's like a giant three pole motor. It's probably better to distribute the forces around the diameter more. IMG_1668 copy.jpg It's like Goldilocks and the three bears,.. I guess I'll lean towards t...