Search found 71 matches

by j bjork
Feb 16 2019 6:03am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

It is kind of working now :D It seems like it was the undervoltige protection. I lowered it to 50, then this violent cogging stopped. I tested to raise my batt amps to 500 and phase amps to 1200 again, now it works, but i get small vibrations and humming when pulling hard at low speed. I will test s...
by j bjork
Feb 15 2019 4:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Another "stelth bomber" build.
Replies: 4
Views: 163

Re: Another "stelth bomber" build.

Thanks for your reply, as you say it is a 1 1/8" headset. I have ordered a bunch of stuff of ebay, with slow shipping. That is why it will take a mounth. It will probly be possible to press the tube out, and aother one in. But I will probably just make an extention that fit in the tube and weld it i...
by j bjork
Feb 15 2019 3:30pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Another "stelth bomber" build.
Replies: 4
Views: 163

Another "stelth bomber" build.

Alright, I have built a commuter before. But that is my experiance in e-bikes. I realized that this can be fun, but then it needs more power.. Well I guess it will not be much of a build, mostly bying parts and put together. But I am new to bikes, I have built some cars before. So I hope to get some...
by j bjork
Feb 15 2019 2:35pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Another commuter build, my first.
Replies: 3
Views: 363

Re: Another commuter build, my first.

Thank you for the responces :) APL, I have seen your cruiser buld. That is really on another level, impessive :wink: I am not very concerned about the bms for now, my charger did charge a little high. But I have been able to turn it down a little, and monitor the battery manuelly when charging. And ...
by j bjork
Feb 15 2019 1:48pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

I did not understand how to get only the display c file, so I downloaded the whole thing. I unzipped and replaced only the display c file, and wrote the firmware again with the tool. But still nothing on the display, did I do something wrong? I disabled the angle correction and lowered batt and phas...
by j bjork
Feb 14 2019 10:21am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Well, I think it is that it gets out of synk. It is like the motor does not pull forward all the time, some times it pulls backwards. Or like if the engine in a car stops, but you don´t release the clutch. When the car stops you feel every compression stroke. That is how I can describe it I think. I...
by j bjork
Feb 14 2019 2:13am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

No, I don´t know anything about programming. So I have no idea where to start to solve that problem. I tried to use casainho:s fw yesterday, it seems to write, but there did not seem to be any differens. It still ran about the same, LCD3 did not work and so on. Then I tried to just use the erase ori...
by j bjork
Feb 13 2019 1:02pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

sascha121985 I don´t think my setup is much use for you, I have an 18fet controller and my setup does´nt really work very good. I have violent cogging if I´m not very gentle at the trottle until I am up at maby 20km/h. It is nice weather here today, and I was able to test outside. That is how I noti...
by j bjork
Feb 10 2019 1:02pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Hi all, new here and looking for some direction. So I'm building a ~3-4kW peak BHT style mid drive direct drive ebike and am hoping to use a KT controller with this firmware, however I am not sure what kind of phase amps I could squeeze out of it. My goals would require about 120A phase Amps. I see...
by j bjork
Feb 10 2019 12:00pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

geofft: absolutly, I will give that a try. Thank you.
I have only been adjusting the angles so far, I thougt I should be able to get it running smooth before fine tuning other settings.
by j bjork
Feb 09 2019 3:25pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Yes, I have a HC-06 bluetooth module, that was what I could find locally. I bought a HC-05, but there vas no bluetooth module on it.. Maby I can take the bluetooth module from the HC-06 and put on the HC-05 if that is better? I tried 215 motor angle, but it cogged badly and blew the fuse. So I think...
by j bjork
Feb 09 2019 8:26am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Interesting, it seems like we have a very simular setup apple2. But some settings are very different, I have battery current 500 (as I understood in the instructions should mean 50A) and battery voltage cal 70. Did you have to swap any phase or hall wires with the new firmware? For me the bluosec ap...
by j bjork
Feb 06 2019 1:20am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Thanks. I will try to play around with that some more, but so far not much luck. In the 170:s the wheel is stuck. I beleve I ended up in the 230:s, then I had very low correction angle. But the bike behaves rather strange. If I pull the throttle it can take off ok, but then start to cogg badly. Some...
by j bjork
Feb 04 2019 1:52pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

This should mean that the halls are in the right order I think? https://i.imgur.com/gSTZJfQl.png Here I have some correction angle, I think I should get that down to 0? https://i.imgur.com/ZIkeTXMl.png https://i.imgur.com/Kp2ohJOl.png I have tried to adjust the Motor specific angle and the correctio...
by j bjork
Feb 02 2019 4:43pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Another commuter build, my first.
Replies: 3
Views: 363

Another commuter build, my first.

I am really a car guy, and I have built cars before. But not elevtric ones. I have thought about bulding an electric bicicle for some time, but I don´t really think I will have much use for one. But now I have a girlfrend without a drivers licence, and I thougt maby she could use it sometimes, so I ...
by j bjork
Feb 02 2019 3:45pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Rasing the correction angle seems to help, I changed from 127 to 168 then to 172. It has improved a lot. And setting all speed limits to 99, now i can get stable acceleration. But a bit sluggish. But the only ting working on the lcd3 is battery voltage, no speed, no symbols for braking, no battery i...
by j bjork
Feb 02 2019 2:28pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

I programmed my controller today, but there are some problems. Before I changed fw I mesured consumption, it used about 1,5A at full speed with the wheel in the air. It was working fine. After programming with the wheel in the air I can not get a steady rotation. I get power for maby half a second, ...
by j bjork
Feb 02 2019 2:11pm
Forum: Items for Sale - Used
Topic: SOLD! Stealth / enduro frame
Replies: 5
Views: 858

Re: SOLD! Stealth / enduro frame

Good seller, I prepaid and got it delivered as promised :thumb:
by j bjork
Feb 01 2019 1:25am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Is this a problem only on the kt60? Not kt36/48 18fet? I remember something about another user earlier in the thread who were modifing an 18fet controller with other mosfets, wires etc. to handle more power. But I think he did not get it running. I think it blew the fuse as soon as he gave throttle ...
by j bjork
Jan 27 2019 12:16pm
Forum: Motor Technology
Topic: Alternator BLDC Mod ~7kw
Replies: 13
Views: 511

Re: Alternator BLDC Mod ~7kw

Nice work :thumb:

Can you use the fan from the old rotor?
by j bjork
Jan 27 2019 6:32am
Forum: Motor Technology
Topic: Controller for QS205 50H V3 4t
Replies: 3
Views: 171

Re: Controller for QS205 50H V3 4t

More options :lol: It seems to be very limited information available for those controllers?
http://accelerated-systems.com/products/
The pdf:s not available..
by j bjork
Jan 26 2019 2:47pm
Forum: Motor Technology
Topic: Controller for QS205 50H V3 4t
Replies: 3
Views: 171

Re: Controller for QS205 50H V3 4t

Does anyone have the numbers to be able to use ebikes motor simulator on this motor or other QS205 50H motors?
by j bjork
Jan 26 2019 2:44pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 394
Views: 30050

Re: Nucular electronics - complete kit for ev! [beta]

It is really compact built, not much unused space there.

It looks like the display might be a bit sensitive of water?
by j bjork
Jan 25 2019 2:33pm
Forum: Motor Technology
Topic: Controller for QS205 50H V3 4t
Replies: 3
Views: 171

Controller for QS205 50H V3 4t

I am trying to narrow down my best options for a controller for a "stelth bomber" build with a QS205 in a 17" motorcycle wheel. I have looked at several options, but it is a jungle out there.. The nucular 24fet seems real nice. But it seems to be a long wait to get one, and I guess it will be a rath...
by j bjork
Jan 23 2019 2:17pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3419
Views: 158192

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

So it should still be speed throttle, not torque? The throttle controls the current (= torque), that's the "normal" behaviour of every throttle in any motorcycle or car. Xnyle has build in the option assist lvl affects throttle , with this you can reduce the max amps of full throttle for low speeds...