Search found 548 matches

by Vanarian
Jul 13 2016 5:41am
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC Fault DRV8302
Replies: 16
Views: 3699

Re: VESC Fault DRV8302

sl33py wrote:I would guess so. My lesson learned was not to do it twice... Repeatable - check! Stupid to do again - C H E C K ! ! !
Haha ok thanks for the advice!
by Vanarian
Jul 12 2016 8:01am
Forum: Motor Technology
Topic: "Edge" DD hubmotor, 1500W, 35mm, Al core
Replies: 187
Views: 31228

Re: "Edge" DD hubmotor, 1500W, 35mm, Al core

Well it looks good but given price and performance, won't a midmonster with mid drive be better? It is six phase though.

Hmmm I must get away from e-bike threads it makes me want to spend and I can't afford to spare on a second project right now :lol:
by Vanarian
Jul 12 2016 2:58am
Forum: Stand-up E-scooters and E-skateboards
Topic: VESC Fault DRV8302
Replies: 16
Views: 3699

Re: VESC Fault DRV8302

Hi Sl33py, is the voltage spike what killed d your VESC? Overcurrent should fry the FETS and also cause nice blow.

So for the switching being too fast with big changes like big acceleration and big braking this comes down to voltage spikes killing the DRV right?
by Vanarian
Jul 09 2016 6:34am
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 219
Views: 51599

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

Ok I understand better :) BTW that's pretty good level for your motor, you should get enough torque if diameter is good too. As for the batteries, you have way less space e than I thought. But I haven't understood everything? At least you will need if space allows more parallel or bigger discharge r...
by Vanarian
Jul 08 2016 6:06am
Forum: Motor Technology
Topic: Racing and efficiency
Replies: 98
Views: 14863

Re: Racing and efficiency

Not the most reliable way but you can make a virtual encoder (or simply just a real one spinning at the un-motorised wheel, challenge of mechanics though, just like dynamometer but smaller - maybe a small high RPM motor? ) out of hall sensors to get the exact spinning data. This way you get your TC ...
by Vanarian
Jul 07 2016 1:20pm
Forum: Motor Technology
Topic: Bike vs Skateboard hub motor (What sets them apart?)
Replies: 11
Views: 2481

Re: Bike vs Skateboard hub motor (What sets them apart?)

AFAIK if you want to know where differences mainly are, you should know that it is only due to motor diameter (ebikes have wider diameter motor and thicker) and copper inside, then you add build quality (assembly, type of magnets, windings, etc). Bigger motor does not need as much power as smaller m...
by Vanarian
Jul 07 2016 7:50am
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 219
Views: 51599

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

Maybe I've not been accurate enough with my reply. 18650 cells are a pretty good format to work with if you want a compact and custom battery pack with decent chemistry and limited weight. Because this is the most used format in industry, notably EVs. Pouches are rarely custom shape, usually manufac...
by Vanarian
Jul 06 2016 1:52pm
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 219
Views: 51599

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

Oh I didn't know it was this hard to work a start up in Japan, wish you even more luck and courage. For the batteries, oddly in Europe and from Fasttech you can get them legit. But I was proposing this one because I assumed you wouldn't have to pay the regular price the rest of the world faces just ...
by Vanarian
Jul 05 2016 4:07pm
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 219
Views: 51599

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

Ok that's right you have space for bridges, keep me updated on how it progresses. Thank you for the offer, we can discuss the motor details in PM if you want and I'll keep it under silence so you're not bothered . Looks narrow but big, I'm really wondering how it performs. I really want to post my o...
by Vanarian
Jul 04 2016 4:42pm
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 219
Views: 51599

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

Congrats on upgrading to hub motors! :wink: How much space did it spare for your electronics? Do you plan on making everything air tight or you plan on cooling? Can you just tell about the motors rating? I can't help with your remote I'm sorry, but I can give you tips for your frame. You want longer...
by Vanarian
Jul 04 2016 11:55am
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

This is centrifugal. Flowing out. It will go out either way u spin it The way it looks, it looks like it will produce different results depending on the direction you spin it. If I take the transparent pic, spin it on the left and it will cause compression in perimeter while still causing low press...
by Vanarian
Jul 03 2016 2:33pm
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

Careful Hummina, from what I've understood so far there is a sweet spot in air about pressure and speed to use its thermal absorption. Note that if you force air through instead of forcing it out and you don't have enough exhaust, you will face back pressure which will apply force through your motor...
by Vanarian
Jul 02 2016 9:53am
Forum: Stand-up E-scooters and E-skateboards
Topic: AT-One electric inline skates (quick update Feb 2019)
Replies: 219
Views: 51599

Re: 3.2KW / 6KW inline skates (updated June 17th 2016)

if you need help, I can ask friends who own a a plastic-injection company. actually they are in LED business but have a big CNC workshop and plastic injection. (and won´t copy your design) edit: they also do injection moulds inhouse Dude that'd be HUGE, Thank you! :D Please yes let's talk in PM ove...
by Vanarian
Jul 02 2016 6:39am
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

Ok I'll keep update for you on how it goes! I'll also check CA and thermistor. Though I was thinking also of getting a temp gun, Justin has been using it to test Ferrofluid and check where heat applies over the motor parts. Well for ride test, it looks unusable to me , it works for bench test I supp...
by Vanarian
Jul 02 2016 6:27am
Forum: Stand-up E-scooters and E-skateboards
Topic: Landwheel and Yave -- Another Mellowboard look-alike
Replies: 7
Views: 1472

Re: Landwheel and Yave -- Another Mellowboard look-alike

These guys have no f*kin limits :evil:

I guess I'll have to carefully select which parts I'll product where, would save me time before the fight begins.
by Vanarian
Jul 02 2016 6:24am
Forum: Stand-up E-scooters and E-skateboards
Topic: Electric Booster...MELLOW clone from China
Replies: 17
Views: 2239

Re: Electric Booster...MELLOW clone from China

Ok keep us updated, don't hurt yourself and PM me when you come to France!

I live in Nice, I work a lot and 7/7 but we can ride together :)
by Vanarian
Jul 01 2016 6:20am
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

Ok great, I'll try this version IRL then. Thank you for your guidance and support!
by Vanarian
Jun 30 2016 4:12pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Choosing a longboard / recommendation
Replies: 12
Views: 1869

Re: Choosing a longboard / recommendation

Hi Ozan, To begin with you need to tell us about your estimated budget. If you have 500$ for example don't even try to expect 60km range + 30km/h + 30° incline ability, that is unfortunately unaffordable with just 500$ and no parts at all. The electronics needed to achieve this will absolutely get y...
by Vanarian
Jun 30 2016 7:33am
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

John, Ok I'll work on it! As for the plate I'll probably just do something close to the one in middle http://img.brushlessmoteur.com/images/moteurdesc/QE0000001130/QE0000001130_01.jpg , If I knew sooner that this kind of design was beneficial I'd have ordered them like this from the factory haha, ok...
by Vanarian
Jun 30 2016 5:33am
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

With the motor so low to the ground it needs screens. Reducing air flow. How many amps u put in those motors vanarian? I'm laughing thinking about all those amps on rollerblades needing cooling. Scary! Haha true! I still have a hard time defining the exact motor phase amps (since these are way high...
by Vanarian
Jun 30 2016 5:11am
Forum: Motor Technology
Topic: Arlo's power stage Leaf controller runs and drives page 103
Replies: 2595
Views: 247756

Re: Arlo's power stage Leaf controller runs and drives page

I'm not qualified yet to post any tech comment here so I'll just give great kudos to you guys. Sh*t your builds are making me dream of getting a good old sport car, strip it bare (and I mean it) and just let electric madness run through. Cut the panels and put them on a tubular frame, get proper coi...
by Vanarian
Jun 29 2016 9:15am
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

Ok thank you for the tips! I didn't know that radial was this effective. And yes you are right, the more open side is the spinning side. Here, new try : https://lh3.googleusercontent.com/-FO5KGWZncrM/V3PWrxQ7FfI/AAAAAAAAAO0/_9NsJp0zvY8Yz-aHmF0wCHPjO8hEiOPXACL0B/w825-h787-no/Jante%2Bjuin%2B2016.png I...
by Vanarian
Jun 29 2016 3:29am
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

FWIW those little plastic button things aren't going to move much air at any rpm. Look at fans for blade designs, though axial fan blades with their beautiful curves that are mostly for marketing purposes aren't appropriate. You're doing a radial fan. As far as "scoops", a big static scoop to help ...
by Vanarian
Jun 27 2016 8:22am
Forum: Motor Technology
Topic: Air-cooling the moving hub motor
Replies: 38
Views: 3829

Re: Air-cooling the moving hub motor

Which temperatures do you need? If you need 250 degree F that's equivalent to 120 degrees C, you're covered with classic PETG like eSun up to 200 degrees C. Cheap and easily available and good quality (no dust or anything in filament). Now as Samd pointed out if you also need the fan itself to absor...