Search found 1051 matches

by j bjork
Jul 03 2021 10:05am
Forum: Motor Technology
Topic: Nanjing far driver controllers
Replies: 7
Views: 427

Re: Nanjing far driver controllers

206961389_278247553986415_7197016857825187302_n.jpg 208061932_279279263985677_2251524820360017036_n.jpg 210858463_814579949450598_4829167378631446080_n.png I got some more info. It seems like max voltage on the 96V models is 118V, not 110V as it says on qs aliexpess site. There is also a 1081200 :)
by j bjork
Jul 03 2021 9:56am
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41387

Re: KTM 200 exc goes electric

Im not sure that the 8800 measurement is good, I didnt try to hold that rpm. I just saw that it was the max it hit in the log.
But I think the 16,7A at 8200rpm should be good.

It didnt sound very good at high rpm, I think the timing missed or something.
by j bjork
Jul 02 2021 3:04pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41387

Re: KTM 200 exc goes electric

It seems like the main reason for all the dirt and water in the connection box is not the seal that was not perfectly in place, but the seal around the phase wires: https://i.imgur.com/XFnEfcl.jpg https://i.imgur.com/XS6ehJN.jpg I thought it was a little strange that I got that much dirt in there wi...
by j bjork
Jul 02 2021 12:55pm
Forum: E-Vehicles General Discussion
Topic: Evaluate my build plan, fine forum members?
Replies: 4
Views: 208

Re: Evaluate my build plan, fine forum members?

I have a relatively cheap build with a cheap hub motor from a 1000w kit, a kt 1500w controller and a 13s5p battery of sanyo NCR18650GA in a halong case. I have a bad front suspension fork and stiff rear, disc brakes. Fully charged it will go about 50kph, around nominal about 45kph and about 40kph be...
by j bjork
Jul 02 2021 5:36am
Forum: EScooters/EMotorcycles
Topic: E-Motorcycle build advise
Replies: 15
Views: 453

Re: E-Motorcycle build advise

stan.distortion wrote:
Jul 02 2021 4:58am

If you contact QS, maybe ask if they doing the same drive cover on the 4kw yet.
From what I seen on their facebook page it is planned, but not more than that yet.
But ask, if nothing else maybe it at least leads to them understanding that there is a demand for it :)
by j bjork
Jul 01 2021 5:24am
Forum: EScooters/EMotorcycles
Topic: E-Motorcycle build advise
Replies: 15
Views: 453

Re: E-Motorcycle build advise

When you look at ant bms you could just go with this one instead:
https://www.aliexpress.com/item/3282646 ... 1d15WNwni1
by j bjork
Jun 29 2021 7:52am
Forum: EBike Technical
Topic: statorade vs statorade w/hubsinks
Replies: 13
Views: 301

Re: statorade vs statorade w/hubsinks

DogDipstick wrote:
Jun 29 2021 3:34am

Hub sinks offer a significant path for conduction.
Sure, but first you have to get the heat to the hubsinks.
by j bjork
Jun 29 2021 7:50am
Forum: EBike Technical
Topic: statorade vs statorade w/hubsinks
Replies: 13
Views: 301

Re: statorade vs statorade w/hubsinks

After abusing my hub motor until it was too hot to touch, I started looking at whether I should add a little more Statorade. Per the recommendation, I originally added 8ml of the 10ml syringe. The recommendation also says up to 8ml for modest RPMs, and up to 12ml for higher RPMs, but that too much ...
by j bjork
Jun 28 2021 11:52am
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41387

Re: KTM 200 exc goes electric

I dont think it is that much of a problem on a street bike.
This one has been driven in mud and been high pressure washed about once a week for a year.
by j bjork
Jun 27 2021 1:14pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41387

Re: KTM 200 exc goes electric

At today's ride it was clear that more work was needed. I had very noticeable bearing noise from the motor.. https://i.imgur.com/VNiwy3b.jpg I took the pcb off, but left the plastic holder untouched to not mess up the timing. Notice the washer under the screw in the middle, I think it is meant to be...
by j bjork
Jun 24 2021 3:33pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Yamaha YZF250F
Replies: 168
Views: 10356

Re: Yamaha YZF250F

Getting somewhere with the model for the bottom part of the battery box: https://i.imgur.com/cEp8Gaa.jpg https://i.imgur.com/doQjcxL.jpg I am pretty sure I will curse the day I found hot glue when I get to the finishing touches, trying to get everything flat and a nice surface :wink: It will be a tr...
by j bjork
Jun 24 2021 12:16pm
Forum: Motor Technology
Topic: ME1616 motor with sevcon gen4 size 6 80V low power??
Replies: 24
Views: 1287

Re: ME1616 motor with sevcon gen4 size 6 80V low power??

Arlo1 on the forum seems to get very good results with sevcons and zero motors, maybe you can get a dcf file from him and compare? I dont remember the outputs, but I think it was higher. But maybe just because of higher voltage? There should be some videos of dyno runs somewhere. Edit, here is a thr...
by j bjork
Jun 23 2021 11:31am
Forum: EBike General Discussion
Topic: Is this the real QS motor company's website?
Replies: 8
Views: 220

Re: Is this the real QS motor company's website?

I am not so sure that the other ones are fake, but I dont know. At least they have several sales teams with different stores on aliexpress. Their representative here an the site said so in their thread. It seems to be something like they think they catch more customers with more stores. It might be ...
by j bjork
Jun 23 2021 11:01am
Forum: Motor Technology
Topic: ME1616 motor with sevcon gen4 size 6 80V low power??
Replies: 24
Views: 1287

Re: ME1616 motor with sevcon gen4 size 6 80V low power??

Okay, I misunderstood and thought Nuxland had been able to help you with that already :) Very curious about what you find out, as I soon will start trying to figure out a sevcon too. A size 6 and a qs 180 90h, I hope to end up in the 40kw range. Around 18 would be very disappointing :confused: A pro...
by j bjork
Jun 23 2021 7:46am
Forum: Motor Technology
Topic: ME1616 motor with sevcon gen4 size 6 80V low power??
Replies: 24
Views: 1287

Re: ME1616 motor with sevcon gen4 size 6 80V low power??

What was the problem that limited the power for you?
by j bjork
Jun 22 2021 1:17pm
Forum: Motor Technology
Topic: ME1616 motor with sevcon gen4 size 6 80V low power??
Replies: 24
Views: 1287

Re: ME1616 motor with sevcon gen4 size 6 80V low power??

It will be very interesting to see how it turns out for you :)
by j bjork
Jun 21 2021 12:02pm
Forum: EScooter/EMotorcycle Build Threads
Topic: KHB - Honda CR125
Replies: 9
Views: 514

Re: KHB - Honda CR125

I think the bike seems expensive for an old bike. Cant you find a newer one with a blown engine or something for less money? The battery pack, just no. If it is built for 60A discharge a change of bms wont make it suitable for 200A. Other than that I think your original plans were good. I dont think...
by j bjork
Jun 21 2021 11:50am
Forum: Motor Technology
Topic: Nanjing far driver controllers
Replies: 7
Views: 427

Re: Nanjing far driver controllers

He still has it installed on his bike, runs fine, no problem. I believe he's not very active on the forum, but he's much more reactive on wechat, so if you have an account I can add you into our ebike group then you could ask him directly. I'll try to ask him to check this thread tomorrow. Thanks, ...
by j bjork
Jun 20 2021 5:33am
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 234
Views: 41387

Re: KTM 200 exc goes electric

Not much have happened to this bike lately. I have basically charged it and lubed the chain, and rode it :wink: I have been more interested in the new build then develop this one further. But after the last few rides it was obviously needing some tlc. https://i.imgur.com/sEuPJcO.jpg Hard to see in t...
by j bjork
Jun 19 2021 11:28am
Forum: E-Vehicles General Discussion
Topic: Limit on battery size?
Replies: 1
Views: 176

Re: Limit on battery size?

I cant see a reason why it shouldn't work,
as long as the size and weight is not a problem.
by j bjork
Jun 18 2021 7:41am
Forum: Motor Technology
Topic: Nanjing far driver controllers
Replies: 7
Views: 427

Re: Nanjing far driver controllers

We installed one on a friend's bike and it is really great. I would definitely install one on my motorbike if I had the money. Interesting, please tell us more :) Is it kebekua on the forum you are talking about? It seems he has had one of the biggest versions for about a year. He wrote he would ge...
by j bjork
Jun 17 2021 9:19am
Forum: EScooters/EMotorcycles
Topic: Battery wiring for 100a trouble..
Replies: 7
Views: 348

Re: Battery wiring for 100a trouble..

I believe they are lazer welded, look at the passat modules in my yamaha thread.
fechter wrote:
Jun 17 2021 8:55am
Any idea what those terminals are made of? Spot welding may be difficult. Whatever those cells were made for must have had a way to connect them. It would be nice to see how somebody else connected them.
by j bjork
Jun 16 2021 12:03pm
Forum: Battery Technology
Topic: DIY HUAWEI R4875 70V~100V 0~50A 5000W
Replies: 41
Views: 1057

Re: DIY HUAWEI R4875 70V~100V 0~50A 5000W

Yes, exactly. How it is modified, and what is is used to control it. Do you know if the same can be done to the R4850G? I have one of those that is modified so it can be adjusted to 120v (from 0 I think?) And 0-25A with potentiometers. It is nice, except the fan goes full speed and is very noisy. A...
by j bjork
Jun 15 2021 12:34pm
Forum: Battery Technology
Topic: DIY HUAWEI R4875 70V~100V 0~50A 5000W
Replies: 41
Views: 1057

Re: DIY HUAWEI R4875 70V~100V 0~50A 5000W

Yes, exactly. How it is modified, and what is is used to control it. Do you know if the same can be done to the R4850G? I have one of those that is modified so it can be adjusted to 120v (from 0 I think?) And 0-25A with potentiometers. It is nice, except the fan goes full speed and is very noisy. An...
by j bjork
Jun 15 2021 5:37am
Forum: Battery Technology
Topic: DIY HUAWEI R4875 70V~100V 0~50A 5000W
Replies: 41
Views: 1057

Re: DIY HUAWEI R4875 70V~100V 0~50A 5000W

Very nice, can you describe what needs to be done?
With pictures and what parts to use if possible :wink: