Search found 119 matches

by coleasterling
Apr 19, 2018 3:44 pm
Forum: Motor Technology
Topic: Buick Lacrosse 2012 e-assist moto-alternator
Replies: 119
Views: 7894

Re: Buick Lacrosse 2012 e-assist moto-alternator

That's a good question. I've never messed with a custom VCL or characterization.
by coleasterling
Apr 19, 2018 2:19 pm
Forum: Motor Technology
Topic: Buick Lacrosse 2012 e-assist moto-alternator
Replies: 119
Views: 7894

Re: Buick Lacrosse 2012 e-assist moto-alternator

Would you be willing to share your VCL/settings? Possibly sell them? I'd love to make and market a kit using the Curtis and the e-assist motor.
by coleasterling
Apr 19, 2018 11:55 am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Track Racer
Replies: 17
Views: 758

Re: Electric Track Racer

I just saw this and love what you're doing here. Would you be willing to let me pay you for your design when you're done? That, or I could sponsor you some CNC work in exchange. I own a small CNC manufacturing facility. Feel free to PM me. I'm starting an electric pocket bike racing league and we're...
by coleasterling
Apr 18, 2018 10:55 am
Forum: Items for Sale - Used
Topic: More LTO cells ~3.5ah
Replies: 18
Views: 786

Re: More LTO cells ~3.5ah

Any chance you could do some quick DCIR measurements on the 3.5's? I'd need far higher specific power than the 11ah's to warrant purchasing them.
by coleasterling
Apr 18, 2018 10:48 am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Sevcon Gen4 - Throttle Interlock Sequence
Replies: 20
Views: 991

Re: Sevcon Gen4 - Throttle Interlock Sequence

I didn't read this whole thread and can't at all help with the Sevcon programming, but the first thought I had was to run two throttle pots, one running up, one running down. They get checked against each other constantly and if one goes out of spec, error thrown. That's a standard method of running...
by coleasterling
Apr 16, 2018 12:03 pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 119
Views: 4618

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

If you come up with a heatsink design I'll gladly machine it and send them out to the other beta guys.
by coleasterling
Apr 12, 2018 5:01 pm
Forum: Items for Sale - Used
Topic: More LTO cells ~3.5ah
Replies: 18
Views: 786

Re: More LTO cells ~3.5ah

So those at 3.5ah look much bigger than the 11ah ones? Any idea on the current capability? Hopefully super high? I have a bunch of the 11ah ones I've been wanting to use, but the current specs aren't high enough to make me use them over my LFP cells.
by coleasterling
Mar 29, 2018 2:20 pm
Forum: Motor Technology
Topic: Astro 3220 Rewind
Replies: 3
Views: 195

Re: Astro 3220 Rewind

On this topic, what's y'all's favorite source for wire? I had a site saved years ago for 200C rated stuff, but can't seem to find it now.
by coleasterling
Mar 28, 2018 10:53 am
Forum: Motor Technology
Topic: Astro 3220 Rewind
Replies: 3
Views: 195

Re: Astro 3220 Rewind

Excellent, thanks Miles! That's exactly what I needed.

-Cole
by coleasterling
Mar 27, 2018 2:31 pm
Forum: Motor Technology
Topic: Astro 3220 Rewind
Replies: 3
Views: 195

Astro 3220 Rewind

I have a burned Astro 3220 and would like to do a rewind on it. I already stripped the winding from the stator, but it was damaged badly enough that I was not able to follow the scheme. Has any rewound a 3220 or other similar motor? Do I need to find and follow the same distributed scheme they used,...
by coleasterling
Mar 27, 2018 11:11 am
Forum: Items for Sale - New
Topic: Group buy for lebowski powerpcb components
Replies: 12
Views: 415

Re: Group buy for lebowski powerpcb components

Man, I am not keeping up with this thread well. Let me know if what I've sent is enough or not. Sorry for complicating things!
by coleasterling
Mar 19, 2018 10:47 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 125
Views: 8174

Re: Another SMD lebowski PCB

Looks great! Thank you!
by coleasterling
Feb 15, 2018 6:57 pm
Forum: Motor Technology
Topic: Xie Chang/PowerVelocity/WCEC Controller Flux Weakening Tuning
Replies: 0
Views: 230

Xie Chang/PowerVelocity/WCEC Controller Flux Weakening Tuning

Since more and more of the new version of these controllers are getting in people's hands, I am hoping someone has an idea how to go about tuning the overspeed features. I haven't come across any reference for what "Flux Weakening Finetune", "Flux Weakening Position", or "Flux Weakening Turnpoint" m...
by coleasterling
Jan 23, 2018 12:42 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Anyway of making the R martins from china sold on Ali express road legal in U.S.
Replies: 23
Views: 839

Re: Anyway of making the R martins from china sold on Ali express road legal in U.S.

Individual states do handle registration, but highway legal status of a vehicle is determined by the feds first. After that, states can decide to be more strict, but not less so. In this case, you could get one or maybe even a few into the states and registered, but they wouldn't technically be lega...
by coleasterling
Jan 23, 2018 11:38 am
Forum: Motor Technology
Topic: Show off your lebowski controller
Replies: 33
Views: 1891

Re: Show off your lebowski controller

Tomdb wrote:
Nov 22, 2017 1:51 pm
Got a lebowski Chip controlling a Honda IMA inverter Gen 2 i believe.
Tom, is that top pic the one you used for the IMA inverter? It looks so simple! Would you be willing to share the design files?
by coleasterling
Jan 23, 2018 1:19 am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Anyway of making the R martins from china sold on Ali express road legal in U.S.
Replies: 23
Views: 839

Re: Anyway of making the R martins from china sold on Ali express road legal in U.S.

No, it isn't retroactive like that. There are plenty of vehicles legally on the road from now defunct brands. It does mean that no matter how similar your vehicle is to one that used to be manufactured, if it is a complete vehicle and not a kit, it can't be imported unless the current manufacturer i...
by coleasterling
Jan 22, 2018 1:32 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Anyway of making the R martins from china sold on Ali express road legal in U.S.
Replies: 23
Views: 839

Re: Anyway of making the R martins from china sold on Ali express road legal in U.S.

It doesn't really matter if the a company imported the bike legally originally or not. If it doesn't have a 17 digit VIN from a company currently registered with NHTSA and EPA (Yes, EPA compliance is necessary.), then you won't be legally registering in the US per federal regs. EPA is about $1800 a ...
by coleasterling
Jan 15, 2018 4:18 pm
Forum: Battery Technology
Topic: Cool student project!
Replies: 18
Views: 797

Re: Cool student project!

coleasterling: Well that's a little harsh, but you are correct. Like many FH teams, we didn't pass tech (though the design of our battery was not the culprit there as far as I know). At least in my time, our team was often guilty of focusing more on fun engineering projects than the challenge of ge...
by coleasterling
Jan 13, 2018 12:16 am
Forum: Battery Technology
Topic: Cool student project!
Replies: 18
Views: 797

Re: Cool student project!

They failed miserably, having never passed tech with a car that was on a 2 year development cycle. Here's a link to car info: https://urchinz.github.io/FH_Web/content/VMR-2.html
by coleasterling
Jan 12, 2018 2:59 pm
Forum: Battery Technology
Topic: Cool student project!
Replies: 18
Views: 797

Re: Cool student project!

Most teams don't use the max 600V. There's actually a pretty good distribution with most teams between 300V and 500V. The best teams are typically around 450V. The pack design linked above is for Formula Hybrid in the US, which has a 300V limit along with FSAE-E at Lincoln, NE. FH has some significa...
by coleasterling
Dec 19, 2017 1:54 pm
Forum: E-Vehicles General Discussion
Topic: MotoGP electric catagory "Moto-e
Replies: 14
Views: 764

Re: MotoGP electric catagory "Moto-e

I'm pretty disappointed in the bike and format choice. The whole thing just sounds boring right now. I'm guessing they are planning to open it up like Formula E, so maybe it'll better in the future.
by coleasterling
Dec 01, 2017 2:07 pm
Forum: E-Vehicles General Discussion
Topic: Madness. Why such slow penetration for hybrid?
Replies: 67
Views: 2929

Re: Madness. Why such slow penetration for hybrid?

Yeah.. i completely agree with that. Hybridizing things is actually rather easy and cheap compared to electrifying things. Seems like less resource usage overall. I disagree with this. You've got two completely separate drive systems to integrate instead of just one engine or motor. Some of the OEM...
by coleasterling
Nov 23, 2017 10:10 am
Forum: Motor Technology
Topic: Driving IPM Motors Neglecting Reluctance?
Replies: 6
Views: 350

Re: Driving IPM Motors Neglecting Reluctance?

Thanks Fechter and Luke! I thought Arlin had made changes to suit the IPM, no? In my understanding, you need to characterize the angle of the reluctance torque at many different commanded current values, since it changes with current? Something like that. Anyway, a lookup table was proposed, but I d...
by coleasterling
Nov 22, 2017 12:39 pm
Forum: Motor Technology
Topic: Driving IPM Motors Neglecting Reluctance?
Replies: 6
Views: 350

Re: Driving IPM Motors Neglecting Reluctance?

Bumping this one more time before giving up. Anyone tried this on a loaded motor?
by coleasterling
Nov 20, 2017 2:13 pm
Forum: Motor Technology
Topic: Driving IPM Motors Neglecting Reluctance?
Replies: 6
Views: 350

Re: Driving IPM Motors Neglecting Reluctance?

Update: Looks like it works just fine no-load on a couple HVH250's I have here, though I don't have any method of dynoing or loading them. My main question now is to find out what that does to efficiency.