Search found 176 matches

by coleasterling
Aug 16 2019 2:34pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 451
Views: 21926

Re: APL's DIY axial-flux motor

I can quote having laminated plates cut, either waterjet or machined. No $200 "your material" fee. Shoot me a pm if you end up needing it done.
by coleasterling
Aug 14 2019 12:56pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 451
Views: 21926

Re: APL's DIY axial-flux motor

Somaloy has decent machinability, but is very prone to cracking. You have to be very careful with it or it'll just fall apart. Super cool stuff, though.
by coleasterling
Aug 13 2019 2:00pm
Forum: Motor Technology
Topic: Legit electric motor technology breakthrough?
Replies: 19
Views: 834

Re: Legit electric motor technology breakthrough?

Did anyone notice they took rough renders of the AM Racing (Cascadia) motors for their video?
by coleasterling
Aug 08 2019 6:27pm
Forum: Motor Technology
Topic: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+
Replies: 139
Views: 18764

Re: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+

Is this a legitimate 10kW motor in an ebike application? I'm looking for a replacement 100mm motor for my race mini moto.
by coleasterling
Aug 08 2019 5:32pm
Forum: Motor Technology
Topic: My1020 / Kunray / YaLU 1000 - 2000W motor ?
Replies: 25
Views: 758

Re: My1020 / Kunray / YaLU 1000 - 2000W motor ?

Back to top for this one. I pulled apart a motor and measured lams...Not good at 0.5mm, sadly. I was spinning it today at no load and noticed some significant heating despite only 4A no load at 7krpm. I did not measure the rate of heating at, say, the 4600rpm it is rated for. I had intended to reter...
by coleasterling
Aug 07 2019 11:01am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Let's just say I had some laying around...It wasn't my preference to use it, but it had been sitting awhile and I had a deadline. Box outer dimensions not including mounting feet are 7.63" x 3.56" x 2.80" to the top of the fins. The length could have fairly easily been reduced by 0.5" and I have som...
by coleasterling
Aug 05 2019 2:29pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Wow! Superb work on that case. Think about the hours of work drawing, programming, and machining... You're not going to get this beauty splashed with mud under the bike, aren't you? :lol: Thanks! I do this stuff literally every day for my business, so it didn't take just too long. Total time with h...
by coleasterling
Aug 03 2019 11:19pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 147
Views: 7234

Re: Serious FOCer (84V VESC 6 based controller)

Now that's what I'm talking about! Looks great!
by coleasterling
Aug 01 2019 9:49pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

I originally planned to 3d print a lower case out of petg, but had a terrible print and I had some down time today when some parts for the rest of my mini bike didn't show up. I ended up machining the lower case and making some significant changes to end up with the board on top as I originally plan...
by coleasterling
Aug 01 2019 1:15am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

And a little preview of what's to come, finished this guy tonight:
by coleasterling
Jul 31 2019 7:42am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

On the bottom of the PCB, on the left (so with the temperature sensor on the right), there is a line going from the battery voltage to the two resistors that feed the battery voltage to the processor board. I would put a switch in this line... I'm torn on this one. What I really want is 3-step proc...
by coleasterling
Jul 01 2019 10:47am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Looking great, Kiwi!


Minimum, PM me with some more info if you would, please.
by coleasterling
Jun 12 2019 11:01am
Forum: Motor Technology
Topic: Anyone Used an MP15470 Motor?
Replies: 0
Views: 162

Anyone Used an MP15470 Motor?

Came across the MP154 series motors last night and despite clearly overrated specs, it is an interesting motor due to some packaging constraints I have. Curious to see if anyone has experience with them. https://frchobby.en.alibaba.com/product/60534101909-811433165/MP_15470_35KW_Outrunner_brushless_...
by coleasterling
May 24 2019 2:48pm
Forum: Motor Technology
Topic: Can any FOC or sinewave sensorless controller handle an astro 3220?
Replies: 24
Views: 834

Re: Can any FOC or sinewave sensorless controller handle an astro 3220?

flat tire wrote:
May 24 2019 2:34pm
3T with ported housing from the davinci dude
Interesting. I wasn't aware that there ended up being more than the first two. Well at least we know there are three! Thanks for responding.
by coleasterling
May 24 2019 2:02pm
Forum: Motor Technology
Topic: Can any FOC or sinewave sensorless controller handle an astro 3220?
Replies: 24
Views: 834

Re: Can any FOC or sinewave sensorless controller handle an astro 3220?

Astros are usually 8 poles / 4 pole pairs. They have that info on their site. Mine is 8 poles / 4 pole pairs. Continuous wattage thru an astro enters the territory of unbelievable but they need active cooling. Water cooling the case is supposed to be best. Yes the BAC2000 will spin in excess of 10K...
by coleasterling
May 24 2019 10:07am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Thank you for the link, but it seems to be dead.

Thanks for the offer on the brain boards! If we do end up needing one, just shoot me an invoice on paypal and I'll take care of it immediately.
by coleasterling
May 24 2019 12:55am
Forum: Motor Technology
Topic: Can any FOC or sinewave sensorless controller handle an astro 3220?
Replies: 24
Views: 834

Re: Can any FOC or sinewave sensorless controller handle an astro 3220?

flat tire wrote:
May 23 2019 7:55pm
BAC2000 sees my astro 3230 (yes) inductance / resistance as 10 uh / mohms respectively. It can spin that thing really, really fast.
3230? I thought there were only 2? I have one and last I heard, the other wasn't for sale.
by coleasterling
May 23 2019 12:09pm
Forum: Motor Technology
Topic: My1020 / Kunray / YaLU 1000 - 2000W motor ?
Replies: 25
Views: 758

Re: My1020 / Kunray / YaLU 1000 - 2000W motor ?

Hmm. How much would you say could be shaven off this motor to make it shorter ? There is only so much space left between bike cranks. Also how would you go about machining another rotor? Seems a lot of trouble for little gain. I'll have to disassemble and measure, but will get back to you on that. ...
by coleasterling
May 23 2019 9:51am
Forum: Motor Technology
Topic: My1020 / Kunray / YaLU 1000 - 2000W motor ?
Replies: 25
Views: 758

Re: My1020 / Kunray / YaLU 1000 - 2000W motor ?

Ubercool, thanks a lot. Copper fill seems not bad at all. On the other hand, it looks like a pretty tight fit. No chance to trim the 124mm version of this motor to around 100mm. Well, that settles it. The rotor seems rather long but tiny. Smaller dia. than the bbshd. Only 6 poles. That explains the...
by coleasterling
May 22 2019 8:09pm
Forum: Motor Technology
Topic: My1020 / Kunray / YaLU 1000 - 2000W motor ?
Replies: 25
Views: 758

Re: My1020 / Kunray / YaLU 1000 - 2000W motor ?

Interesting feedback. Do you happen to have some pictures ? 7500RPM is alot though :shock: I'd need to halve it at least to get something useful. That's why I was talking WYE/Delta hack or rewind; not to get more power per weight, but better efficiency at 14s and a medium reduction. Currently looki...
by coleasterling
May 22 2019 4:14pm
Forum: Motor Technology
Topic: My1020 / Kunray / YaLU 1000 - 2000W motor ?
Replies: 25
Views: 758

Re: My1020 / Kunray / YaLU 1000 - 2000W motor ?

Running one of these on a Razor kid's toy operating at 60V nominal and around 150-160 phase amps and around 120 battery amps. Cheap, relatively heavy, but not bad! We've beat and beat on it and gotten it quite hot (boiling water) with no noticeable degradation to the enamel. I am pretty sure it can ...
by coleasterling
May 15 2019 11:06am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

No trouble, thank you for all you've done already!

I've contacted Lebowski, but haven't heard back, yet. Kiwi, if you want a shot at it, I'm happy to send your way. I think we'll have to get Lebowski involved somehow, since it'll need a new dspic, but no need to have him do it all.
by coleasterling
May 02 2019 4:59pm
Forum: Motor Technology
Topic: Xie Chang/PowerVelocity/WCEC Controller Flux Weakening Tuning
Replies: 3
Views: 637

Re: Xie Chang/PowerVelocity/WCEC Controller Flux Weakening Tuning

Ya, good luck. I never got anywhere with that bike. I did use the controller on a mid drive and it magically worked with 20 under "Flux Weakening Level." It was inconsistent in where it came on, though.
by coleasterling
May 01 2019 4:53pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

That is odd, powering the 5V rail directly would not under normal circumstances cause the magic smoke to escape. If Whereswally606 can't help you can send to me, replacing the DSPIC is not a big deal but I suspect there will be some other debugging required. Thanks sir! I'll keep that in mind. I di...
by coleasterling
Apr 30 2019 10:10pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 17910

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

The first thing you need to do is verify you have +5V going to the brain and +15V going to the fet drivers. No +15V or +5V, both on the power board and powering pin 14 (Edit: This was also a mistake?) with 35V and using pin 21, 17, or 9 as ground. EDIT: Bad, bad, bad news bears. I've apparently kil...