Endless Sphere

Or back to sabvoton. And I assure you they are already up to task against to the ASI. I can’t justify doubling the price for no gain.

What Sabvoton controller is that? I have not seen any sabvotons above 250A battery.

If BAC8000 is up to 730A battery then its nearly three times as powerful..

I will remove the high volt control also if current spikes could drive a high volt error.. It'll be interesting to see if it makes any difference

I've been lied to several times about when the controller will ship

Thanks for the tip. Impossible to see why you should not buy directly from ASI if it works like that, it's even sold at the same price.

I am backpedalling out of this one..

No status LED on the Votol controller..

But you gave me an idea, i'll set low volt to zero just to rule out that it's the fault.

I'll shorten the wires and tape them together as a first test. A lot of info in this thread: https://www.rcgroups.com/forums/showthread.php?952523-too-long-battery-wires-will-kill-ESC-over-time-precautions-solutions-workarounds I have total length of wire over 1.2m, following cap bank could be as la...

I don't understand what you mean? Cutoffs are not from low volt error, i never reach that low.

I guess that current spikes push controller into high current error but i cannot be sure.

What is your guess Fechter?

The controller cutouts are annoying, can't just smash the throttle wide open as it will cutoff power. I can still get hard takeoffs but i have to be slightly slower on the throttle. I have three battery packs with a LOT of wiring to the controller. I'm thinking of trying a capacitor bank if the cuto...

I've read that these controllers are hard to program, at least the BAC2000. Does BAC2000 share the same program with the BAC8000? Do you have any experience to get it to work with a motor like the QS 138 70H mid motor? Link: http://www.cnqsmotor.com/en/article_read/QSMOTOR%203000W%205000W%20138%2070...

My battery is already struggling, >10V drop at peak current. I'll build an additional 20s5p pack if i can fit it somewhere on the bike

I have the Votol em150S controller, bought from qsmotor. It was about 200 USD on a summer sale. I like it so far, seems solid.

http://votol.net/wap/en-us/controller/28.html

Why do you ask?

Another pic from today, i had a great time riding/programming the controller.
The bike is a little rough around the edges with the scuffed paint and scratches all over but i like that

The tension problem is there's slack created during suspension compression. I couldn't fit an outside idler on the swing due to many reasons (primarily couldn't find the space) An outside frame fixed idler gives lowered tension during the suspension compression but an inside, frame fixed idler incre...

Yes, but you have the wrong comparison to land it in the ballpark.

-I'd ask and take bionicons guesstimate of the power first.

-Second option is to do the caculation i made above with some assumption on the heat shedding potential and duty cycle.

It's not meaningful to do a comparison between those two motors. Power to weight is about several factors.. like the efficiency, thermal mass and heat shedding potential which can differ wildly between two motors. Me1115 is about 85% efficient in this plot: image.png QS3000W is about 90% efficient i...

Changed my mind, wanted to keep the available throttle band and since i had no issues for the high throttle i just added 470 Ohm to the low/ground side. That should raise the low voltage output to 0.4V Result is a decent amount of dead band, really good throttle response and no controller faults :D ...

Problem almost solved trottle dont give maximum volt.It just showed that it gave just 1.94 volt normaly it was 4.8volt.Maybe the trottle is damaged when i blow up my controller :shock: its a domino ,somebody know of this problem? By the way the motor still pulls hard not damaged at all :D I'd guess...

I'm going to do some proper testing tomorrow It'll be interesting to see what the top speed is now with this motor and the belt drive

Some shorts don't show until you reach higher voltage, an isolation tester would show that, it can send a high volt signal i guess that coil short is not the root cause so if you don't have one then it's no big deal. I had a powervelocity controller where they had got silicone sealant on the current...

So you've got smooth rotation at low current or how is it working? Maybe post a video of a test.

Do you have an isolation tester? If so, you could try measuring between each phase end and motor shell.

Do you have another motor you can try the controller with?

Which ASI was that? Thinking about buying a BAC8000. Are they that hard to program?

Sorry Vasili to clutter the thread. I anyway think your controller will have a looong waiting list, and i'm not on it yet so it doesn't make a difference

I measured the throttle: - Switch is not connected to throttle signal circuit (great!) - Low resistance (with wiper closest to the measured contact) is about 20ohm on one side and 40ohm on the other. - max resistance end to end is 5.5kOhm If i put 1 kOhm resistor on both in and out side then signal ...

Switch seems to be independent from the throttle signal based on the picture.. Then it should be the throttle low voltage error that shuts down the controller.
Throttle low volt is programmable but it does not change the values in the program even though i save..

I will measure the Domino.

Thing is it works from zero to full throttle without fault, it's when the throttle switch in the domino is activated when you release the throttle during driving that the controller faults. My guess is that the switch breaks the 5v to ground connection (for safety reasons in case of shorted pot) whi...

It seems the domino throttle doesn't work with the Votol EM150s controller, it only powers the motor from a standstill. The controller powers down as soon as the switch in the throttle is activated and won't start again until from a standstill. I guess the switch breaks the power in the throttle dri...

It's weird, you have problems with a brand new bike but no help?

He's been on here today but i guess he doesn't spend a lot of time on ES checking threads. Do your mails and calls get answered? ES isn't the best for communicating..