Endless Sphere

Its a good idea and I don't think its pointless at all. People use their light EVs in so many different ways. Check out the "forumscontroller" on the German ebike forum. https://www.pedelecforum.de/wiki/doku.php?id=elektrotechnik:forumscontroller It has pretty similar features to the cycle analyst b...

Hi all, Around November last year I purchased this controller through ASI directly as part of their evaluation kit. I ended up using VESC controllers on my bike as I like tinkering with the open source firmware. After a couple of months the ASI controller blew and ASI replaced it under warranty. So ...

Too bad about the gears. I half expected they would explode immediately

Theres no shame in ebike fails that merely involve slow pedalling home.

Have you considered the ASI BAC8000 controller? It can provide the power and current you are after. For someone who just dabbled around with MOSFETs, even 104V nominal is "high". As you can see in my previous posts, the currents needed to extract maximum (peak) power from the motor at the rated 55.5...

The motor poles parameter and all of the settings under additional info aren't used for actually spinning the motor. The hall sensor positions should be automatic when you run the sensor detection. Check if the hall sensor table in vesc tool has sensible values (ie not all 255). Also 15 amps should ...

Wow 30 cents is really cheap if genuine. Even if you buy thousands from LCSC you are still looking at over $2 USD a piece.

The stutter seems like the controller is trying to run the motor in hall sensor mode, but sensors are not configured or plugged in.

Are the problems you had with the neu motor pretty typical for the brand, or do you think you got one built on a friday? Neu are pretty well regarded in among the rc crowd. Someone else on this forum had the same balance/vibration problems with an 8057. Neu have not been selling these 8000 motors f...

flat tire wrote: ↑

May 25 2019 11:56pm

8057

By the way if you need a shaft I can sell you one as I have some spares that I had machined in China. Its basically a CNC version of the one in my first post. Made from 304 stainless and with 12mm at the output for mounting a sprocket.

I notice the motor is not completely silent ( i suppose this is to be expected ), yet you're running a VESC variant controller. Is this one of those open cased motors, by chance? Yea the motor has cutouts front and back. Its quite audible even when coasting at speed. In the video you can just make ...

When you said cheap $100 motors with 0.2mm lams, were you referring to ones like this? https://flipsky.net/collections/e-skateboard/products/flipsky-electric-skateboard-motor-r-6374-190kv-3250w Yep those are the ones. Sensored 80100 and 8085 motors are also available from some of the eskate motor s...

It seems like eskate has settled on 10-12s so the sensored outrunners are in the 100-200kv range. I'd agree with flat tire that you may as well go with astro in this price range. And save yourself the hassle of high erpm. Sure faster controllers like the vesc can do 150k erpm but at that point the m...

They look like nice motors but yikes the price! I'm a bit confused about whether the pole count is 14 or 28 as the hacker USA site lists 14 and the German site lists 28. With the rise in popularity of eskate, a similar sized motor with 0.2mm laminations and hall sensors can be purchased from HK or o...

I sold one of my 18 fet vescs to a forum member here who is using it to power a delta wound 3220. Not sure if it is up and running but build thread is here https://endless-sphere.com/forums/viewtopic.php?f=28&t=72499 The 60k erpm is a fairly conservative limit from ASI. The cpu doesnt crap out and c...

The 3220 has 4 pole pairs so you probably will not get up to 60k erpm?

Low inductance could be a problem though depending on your wind. ASI recommends minimum inductance of 60uh but motors below this seem to work fine.

Hi, What is this compact vesc ? Where can I buy it ? It is a very intersting model with the two boards sandwich, can you give me its specs pls ? Thx ! Check out team triforce uk. Assembled boards and bare pcb are for sale on the website. I quite like the dual board design for repairability. If mosf...

I've measured the BEMF and all phases are similarly rough sinusoids. Also, for what it's worth, when running at low speeds (unloaded, around 50 rpm) the current consumption is low, maybe around a total of 10-20W to drive everything. Is it common for eddy losses to be so ridiculously large for outru...

lukashanak wrote: ↑

May 14 2019 6:19am

You can see fuse on left side by the winding on my photo. White thing, 110°C on it.

On your motor was the temp sensor just hanging loose like that originally or did you pull it out to show us? Should really embed it in the windings.

Grantmac wrote: ↑

May 09 2019 12:00pm

Who makes the VESC?

I assembled Ace's vesc from pcbs I got from team triforce uk. Its 18 fet and 75v max.

Awesome can't wait to try this out.

Marcos do you have a compiled vesc tool with field weakening for linux?

Hillhater wrote: ↑

Apr 28 2019 5:20am

Apparently Ezee are blaming the LG cells for a defect ?

And looks like LG deny everything. I don't recall reading that in article on the day it was published. I only noticed it today?

Would it be possible to have the bluetooth soldered to the pcb? Some IO has been set aside in recent firmware for a permanently attached NRF chip. This would leave RX and TX ports free for other uses such cruise control and profile switching.

I'm sure the controllers will be great.

Make sure to include the SWD port and the third unused adc pin in the connectors.

Bigger than Cyclone 3kW and 2-4kW, with a lot less torque and a fraction of the power? What am I missing? If they are anything like the ones I bought for a similar price from aliexpress, there is a lot of empty space inside. The stator height is the same as the cyclone 3k at 30mm. Air gap diameter ...

Finally got around to mounting a new encoder board on the bike. https://i.imgur.com/IO8WpYy.jpg I tried using position control to hold the wheel at a stop but wasn't able to get the transition nice and smooth. Instead I configured my regen lever as a reverse throttle and set the reverse erpm limit v...