Search found 489 matches

by qwerkus
Apr 10 2020 5:54am
Forum: E-Bike General Discussion
Topic: how to choose a good battery case ?
Replies: 16
Views: 626

Re: how to choose a good battery case ?

Good question. I for once think that in a conversion project, the battery is like 90+% of the job, especially if you use a simple bbs kit, or a laced hub with integrated controller. Anyway, without trying to undermine the more enthusiastic answers in this thread, I'd suggest having a look first at ...
by qwerkus
Apr 10 2020 5:52am
Forum: E-Bike General Discussion
Topic: Not buying anymore Ebike stuff.
Replies: 87
Views: 2124

Re: Not buying anymore Ebike stuff.

Difficult choice. I don't think there is any manufactured product left on this planet free from some sort of chinese touch. And even than, the question still raises if it would be the right way to go. Here in Europe, due to early lobbying efforts, bosch & co managed to have laws passed that killed t...
by qwerkus
Apr 03 2020 4:30pm
Forum: E-Bike General Discussion
Topic: how to choose a good battery case ?
Replies: 16
Views: 626

Re: how to choose a good battery case ?

Good question. I for once think that in a conversion project, the battery is like 90+% of the job, especially if you use a simple bbs kit, or a laced hub with integrated controller. Anyway, without trying to undermine the more enthusiastic answers in this thread, I'd suggest having a look first at c...
by qwerkus
Apr 03 2020 4:20pm
Forum: E-Bike Build Threads / Photos & Video
Topic: 10000W KMX recumbent trike suspension
Replies: 7
Views: 2324

Re: 10000W KMX recumbent trike suspension

I find it odd how many videos we see where people don't pedal. I have a stealth bomber and I pedal 99%of the time. I would not have an e bike without pedalling, it just seems odd to me. I would get a motorbike or e motorbike if I didn't want to pedal. And nobody finds odd that he doesn't even stop ...
by qwerkus
Apr 03 2020 4:15pm
Forum: Items for Sale - New
Topic: KMX Trike Rear Suspension
Replies: 2
Views: 588

Re: KMX Trike Rear Suspension

Nice work. Have you considered just sawing off completely the square tube below the seat all the way up to its perpendicular counterpart and develop a matching bolt-on solution ? I think you could gain around 50mm total length this way an make for an even cleaner look. Not sure it would work on you ...
by qwerkus
Apr 02 2020 3:23pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 262
Views: 36212

Re: Serious FOCer (84V VESC 6 based controller)

So you got it working! niiiiiice.
by qwerkus
Apr 02 2020 3:16am
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

Re: E-Trike Design: Balloon Tires vs Dedicated suspension

i have ideas in the works to use a differential to drive the (still unsuspended) wheels from a single central motor, but it is complex because the diff axle can't go to the hubs of the wheels, or else it will make a bump in the middle of the cargo deck, or actually have to be in the middle of teh c...
by qwerkus
Apr 01 2020 5:52pm
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

Re: E-Trike Design: Balloon Tires vs Dedicated suspension

Great feedback - thanks! Not sure how I would implement a stabilisator on a trike. Made some progress with the fully design. Added the whole diff + axle + knobs setup, plus an IGH. The gear hub allows for a lower COG an solves some issues in the wishbone design, but adds an extra 1kg to the already ...
by qwerkus
Apr 01 2020 6:44am
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

Re: E-Trike Design: Balloon Tires vs Dedicated suspension

I can only say it would be interesting to try a delta trike with rear suspension. My thoughts ran towards trying to use the cheap rear swingarm assemblies on Walmart mtb's to try it. Same here. Was looking for 2x fully swingarms for some time now in the second hand market, and it's super hard to fi...
by qwerkus
Apr 01 2020 4:38am
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

Re: E-Trike Design: Balloon Tires vs Dedicated suspension

first question is, why do you want suspension? do you have poor road conditions, or is it for offroad, etc? if you have smooth roads, you don't need suspension. example: my sb cruiser trike (link in signature) is a large and heavy completely unsuspended delta cargo trike, used on relatively smooth ...
by qwerkus
Mar 31 2020 5:39pm
Forum: E-Bike General Discussion
Topic: Bafang G311 front hub speed limit
Replies: 7
Views: 139

Re: Bafang G311 front hub speed limit

There are issues with those motors at higher speeds: the magnets of the rotor can loosen. That's why bafang only releases them for 36v. I have mine laced into a 28" wheel and feed it 48V over an unlimited kt controller. Max speed is around 28-30km/h.
by qwerkus
Mar 31 2020 3:58pm
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

Re: E-Trike Design: Balloon Tires vs Dedicated suspension

There was a mention about cambered rear wheels to help with cornering. My current trikes are both Sun Delta X3-AX models, which have cambered rear wheels. It does help with cornering, but it doesn't prevent tipping. Never tipped over, but have raised the inside wheel off the ground which will happe...
by qwerkus
Mar 31 2020 3:52pm
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

Re: E-Trike Design: Balloon Tires vs Dedicated suspension

Thinking that tires can be a suspension is a common myth. It's not so much the tires than the air inside the tube that act as a form of suspension. Nobody is ever going to argue that more air in wheels can replace a dedicated suspension, but at speeds below 35km/h, it's good enough for commuting, a...
by qwerkus
Mar 31 2020 11:56am
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

Re: E-Trike Design: Balloon Tires vs Dedicated suspension

Flexible halfshafts will be the big challenge. If anything was suspended on a Delta Trike, I think its probably more practical to keep a live axle with long trailing arms mounted just behind the Bottom Bracket and a panhard rod for lateral stability. Or just go with Fat tires. They do improve the r...
by qwerkus
Mar 31 2020 10:04am
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

Re: E-Trike: Balloon Tires vs Dedicated suspension

I know nothing about tricycles, but I ride a bicycle of similar configuration. The need for suspension depends on what you're riding on, and how fast, right? I never thought much about it, until I put on the motor and my average speed went up. The problem wasn't so much the discomfort as the rattli...
by qwerkus
Mar 31 2020 8:26am
Forum: E-Bike General Discussion
Topic: E-Trike Design: Balloon Tires vs Dedicated suspension
Replies: 33
Views: 822

E-Trike Design: Balloon Tires vs Dedicated suspension

Hello, I'm working on a Delta trike and was going for a full suspension dual wishbone design, when I realized for that price I could build 2x sturdy FWD Deltas without suspension but larger tires instead. Here the current status of the fully: fully_delta.jpg Expected advantages are: comfort, better ...
by qwerkus
Mar 30 2020 2:03am
Forum: E-Bike Technical
Topic: 12T MAC motor and high current
Replies: 42
Views: 6226

Re: 12T MAC motor and high current

Back to the Original topic. 12t mac will work, but if you want to run 40 amps, get a direct drive motor of any kind. Sheds the heat better. But because of weight, a way smaller wattage would be a bad idea too. Macs or other motors of that type have a good track record of standing 30 amps of 48v. Al...
by qwerkus
Mar 27 2020 2:28pm
Forum: Motor Technology
Topic: My1020 / Kunray / YaLU 1000 - 2000W motor ?
Replies: 54
Views: 5967

Re: My1020 / Kunray / YaLU 1000 - 2000W motor ?

Let me tell you what man. The 2000w pushes me 50+ mph on a custom chopper scooter that weighs atleast 200 lbs without counting my 159 pound body riding it. So this 2000w little motor on 60v is a beast. Scares the hell out of me it has so much power. Especially during custom install when alignment o...
by qwerkus
Mar 27 2020 4:22am
Forum: E-Bike Technical
Topic: System keeps shutting down
Replies: 17
Views: 925

Re: System keeps shutting down

How would I know if there is a phase / hall mismatch ? I tried several combination, and found one that seems to be working quietly (at least in comparison to previous ones). Didn't try all combinations though. I asked the motor manufacturer, and they say it was tested with kt controller in out-of-th...
by qwerkus
Mar 20 2020 4:55pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1444
Views: 175440

Re: bluetooth BMS?

Qwerkus, that estimated capacity showing 51% is just an estimation, and I believe the JBD units try to update their capacity numbers as you use them. Whatever capacity settings you have entered currently are too optimistic, and it's closer to empty than actually 51%. Try to monitor the BMS in real ...
by qwerkus
Mar 19 2020 1:46pm
Forum: E-Bike Technical
Topic: Creaking bottom bracket: anti-seize?
Replies: 6
Views: 422

Re: Creaking bottom bracket: anti-seize?

Known issue: viewtopic.php?p=1474957
Even if it "feels" tight, the bbs has a lot of power and even a tiny amount of play inside the bb shell will produce creaking noise. Has to be air tight stuffed with material that does not wear.
by qwerkus
Mar 19 2020 12:17pm
Forum: E-Bike Technical
Topic: System keeps shutting down
Replies: 17
Views: 925

Re: System keeps shutting down

I have asked several questions designed to nail this down. You have failed to answer several of them. SO, I shall repeat and reword just one of the most relevant, in order to proceed in a logical, efficient fashion, as I strongly dislike random procedures as they usually just waste time, and cause ...
by qwerkus
Mar 16 2020 5:38am
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 174
Views: 32765

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

P2 should be 6 because it has 6 pulses per turn. It worked fine for me. Hmmm. My speedometer stays at 0 not matter what. Tried 2 different displays without success. Could it be a mismatch between the bafang 910 connector and the kt connector (speed signal on the wrong wire?). It proved awfully diff...
by qwerkus
Mar 16 2020 4:33am
Forum: E-Bike Technical
Topic: System keeps shutting down
Replies: 17
Views: 925

Re: System keeps shutting down

Do you always start with high assist, or it works on low until you go high, then reduce from there? What happens if you start with a lower level assist, and just leave it there? Detail the EXACT sequence of events, from when you first start riding to when it shuts down, and just as important, those...
by qwerkus
Mar 15 2020 4:51pm
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 174
Views: 32765

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

Tried it today: g310 + kts controller 6Fet hailong integrated @48V. Pretty much plug and play, though the motor seems a bit noisy when compared to some youtube videos. I'm going to try other c2 parameters. Also, any chance to get pwm speed (p2) somehow accurate ? Right now the display shows only mot...