Search found 164 matches

by coleasterling
Jun 12 2019 11:01am
Forum: Motor Technology
Topic: Anyone Used an MP15470 Motor?
Replies: 0
Views: 76

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: 598

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: 598

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: 188
Views: 15537

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: 598

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: 24
Views: 454

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: 24
Views: 454

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: 24
Views: 454

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: 24
Views: 454

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: 188
Views: 15537

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: 2
Views: 514

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: 188
Views: 15537

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: 188
Views: 15537

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...
by coleasterling
Apr 30 2019 6:36pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 188
Views: 15537

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

Alright brain trust, tried powering up for the first time and it was a miserable failure. Tried powering up the brain board separately and saw the faintest flicker from an LED, then nothing. I can't see anything obvious as to why there'd be an issue. Anyone want to take a shot at diagnosing the pack...
by coleasterling
Apr 29 2019 11:45am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 188
Views: 15537

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

And we're done, minus our R1 and R2 that I had to order some more resistors for. I elected to go ahead and leave the board on bottom for testing, then will move it to the top later when everything is proven. I need to source some connectors for the brain board external inputs, as well. Any thoughts?...
by coleasterling
Apr 24 2019 11:45am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 188
Views: 15537

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

More progress. Got all the components that require high heat done. Still worried I cooked something, but I guess we won't find out until I run the dang thing. I'm hoping it will go a lot more quickly now that the tough stuff is done.
by coleasterling
Apr 23 2019 11:21pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 188
Views: 15537

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

More progress! Got current sensors and the first three fets on. Took a lot of heat, hope I didn't cook something. Also wondering if I should have bent the fet leg to sit on the plate shared by the current sensor instead of passing it through the board. Too late now, anyway.
by coleasterling
Apr 20 2019 1:22am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 188
Views: 15537

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

Posted this on the Facebook group. Finally got some time to work on the board again. I think I finished beefing up the high voltage path, but am open to input. Plates are around 1mm thick. Maybe more beef on the top side closer to the caps?
by coleasterling
Apr 08 2019 2:52pm
Forum: E-Bike General Discussion
Topic: surron bicycle with qs205 middrive
Replies: 20
Views: 1417

Re: surron bicycle with qs205 middrive

Okay, that super cool...But I'm confused. Did you buy a surron and disassemble or were you able to buy the frame alone, or what?
by coleasterling
Apr 01 2019 10:14am
Forum: Motor Technology
Topic: No Valid Forward Hall Combinations
Replies: 4
Views: 176

Re: No Valid Forward Hall Combinations

Interesting, I never considered timing to be an issue with a controller's ability to spin the motor. I've had several motors with pretty advanced timing and no major issues before now. Regardless, thanks for the lead on the reverse function! It took a little probing, but I found it and got it to wor...
by coleasterling
Mar 31 2019 12:41am
Forum: Motor Technology
Topic: No Valid Forward Hall Combinations
Replies: 4
Views: 176

No Valid Forward Hall Combinations

Here's a fun one. Controller works fine on another motor, motor works fine on another controller. I have three valid reverse hall/phase combos, but no forward. From a valid reverse combo, I swapped two phase wires and then went through the hall combinations. There is one that slightly spins, but it ...
by coleasterling
Sep 17 2018 11:06am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 188
Views: 15537

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

I'm just tooling away slowly on mine. It'll probably be another month before I'm finished, but I am making progress! Nothing exciting to share yet, though.
by coleasterling
Sep 14 2018 12:47pm
Forum: Electric Watercraft
Topic: Simple Outboard Conversion
Replies: 2
Views: 967

Simple Outboard Conversion

Hey Guys! First electric project I've finished (or at least come close to finishing) in awhile. Motor is an ME0709, 1:1 chain drive to the original lower unit shaft with the original splined coupler from the gas power head's crank. It will eventually be running at ~100V nominal and 70-80A, with perf...