Search found 633 matches

by Dui, ni shuo de dui
Jan 15 2022 3:08am
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

Thanks for the kind words guys, much appreciated ! :thumb: Why not make a new transparent cover , e.g. from Macrolon/Plexiglas ? :wink: It would be fun to have one transparent cover, but I still have to add the insulation sheets, so even though the cover might be transparent I wouldn't be able to se...
by Dui, ni shuo de dui
Jan 14 2022 1:32am
Forum: EScooter/EMotorcycle Build Threads
Topic: 1957 Lambretta LD 150 EV conversion
Replies: 36
Views: 1621

Re: 1957 Lambretta LD 150 EV conversion

Not sure WD40 on a tire is a great idea. I hope you cleaned it really well after that.
Soap just washes out with water, next time try it, works really well. :wink:
by Dui, ni shuo de dui
Jan 14 2022 12:47am
Forum: EScooter/EMotorcycle Build Threads
Topic: 1957 Lambretta LD 150 EV conversion
Replies: 36
Views: 1621

Re: 1957 Lambretta LD 150 EV conversion

kingkongshrimp wrote:
Jan 13 2022 11:56pm
Searched online and found the zip tie trick.
I was about to suggest it. you only really need 3 zip ties and also some soap. Soap makes it even 10 times easier. :wink:
by Dui, ni shuo de dui
Jan 13 2022 9:14pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

Good news: my PCB arrived! It was missing a few through hole components, because I chose to solder them myself to save a little bit money. I had to make two since it was the minimum order quantity, but that's no problem, this way I have one spare. IMG_20220113_140221.jpg The first test revealed that...
by Dui, ni shuo de dui
Jan 13 2022 4:27am
Forum: EScooter/EMotorcycle Build Threads
Topic: 1957 Lambretta LD 150 EV conversion
Replies: 36
Views: 1621

Re: 1957 Lambretta LD 150 EV conversion

Nice work!
The swingarm looks beefy, won't it be a bit heavy?
by Dui, ni shuo de dui
Jan 11 2022 11:27pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250

Just wondering about the carbon parts, do you mix the fibre and epoxy before filling the mould? Actually no, I fill progressively by adding fiber and resin together, with a brush. I thought about this method but it will make a thick paste and probably won't be able to make it to the tiny features o...
by Dui, ni shuo de dui
Jan 09 2022 10:25pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

Still working on the battery box. I've printed the BMS box cover: IMG_20220110_000607.jpg I'm also printing the internal structures. These internal parts shall serve several purposes: -Provide a physical separation from the layer of aerogel sheet that I will add between this part and the carbon box,...
by Dui, ni shuo de dui
Jan 06 2022 10:28pm
Forum: EScooter/EMotorcycle Build Threads
Topic: My Chinese E-Scooter
Replies: 64
Views: 15528

Re: My Chinese E-Scooter

Probably one of the last mods for the scooter which I now consider as a 100% completed projet: The front suspension. I was still using the old one, it looked a bit sad and crappy. That was supposed to be temporary so it was time to upgrade! So this time I went with inverted forks: tadaaaaa IMG_20211...
by Dui, ni shuo de dui
Jan 05 2022 10:52am
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 49
Views: 1049

Re: Optimum Battery set up for my EV scoot Spec?

So I continue to look at Battery options, either build myself or get a battery built. One question I have is on the statement above about requiring a max discharge capacity of at least 600A -Where did you get this from? Well I got it from you actually, you said you'llbe using a "Fairdriver con...
by Dui, ni shuo de dui
Jan 04 2022 10:48pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

Thanks Tyler! I think it should be more or less equivalent in strenght with an aluminum part, it is very stiff. But it doesn't really need to be very strong for this particular application, I just did it this way for the sake of experimenting with a new process, it's always nice to learn new stuff! ...
by Dui, ni shuo de dui
Dec 27 2021 11:08pm
Forum: EBike Troubleshooting
Topic: APT72400 and QS hub motor not starting
Replies: 1
Views: 74

Re: APT72400 and QS hub motor not starting

Righto, now we have batteries giving 72 volts+, we have connection to the controller, tested with dc voltmeter, we have a throttle connected to the controller as required, we have 3 AC connections from the controller to the motor, we have connected the hall sensor plug. We turn the key and twist th...
by Dui, ni shuo de dui
Dec 24 2021 12:21pm
Forum: Forum Rules and Features
Topic: Move to XenForo software
Replies: 178
Views: 12825

Re: Move to XenForo software

Do we have any idea when these updates will be deployed? As someone stated earlier it doesn't matter if things aren't perfect or if it's ugly (current version of the forum isn't particularily eyes pleasing to begin with so that's really not a problem :wink: ). Only thing that really matters, at lea...
by Dui, ni shuo de dui
Dec 24 2021 1:34am
Forum: Forum Rules and Features
Topic: Move to XenForo software
Replies: 178
Views: 12825

Re: Move to XenForo software

Speaking strictly for myself, I don't see the reason behind any 'like/react' feature. What good does it do? It makes the forum more dynamic. Often when you post stuff and there's no answer you're never really sure if people just don't care about what you posted. That's kinda make you doubt the usef...
by Dui, ni shuo de dui
Dec 22 2021 9:02pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

What cad program do you use? I'm using Onshape, it's an entirely web based application, no need to install anything, no need for a powerful computer, only thing you need is an internet connexion. It's really easy to use, fast, very powerful... I absolutely love it. I don't know if it is still possi...
by Dui, ni shuo de dui
Dec 21 2021 3:26am
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

Looking very tidy! On the Honda Prelude battery cooling, I decided to just use the aircon heat exchanger whenever the aircon was being turned on in the cabin. The idea being, if the driver is hot, the battery will be hot. It doesn't run when charging, although you feasibly could do so if you wanted...
by Dui, ni shuo de dui
Dec 08 2021 9:44pm
Forum: EScooters/EMotorcycles
Topic: Sondors x new bike the Metacycle
Replies: 70
Views: 4145

Re: Sondors x new bike the Metacycle

Heavy wheels at high speed involve some voodoo physics. The ideal ride is a heavy frame, with a very light wheel/tire, and the suspension spring is light and progressive, meaning it gets stiffer the more you compress it. Metal coil-springs are nice, but a cylinder with an air-spring works very well...
by Dui, ni shuo de dui
Dec 08 2021 8:40pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

Some progress on the air conditioning system: it is almost done! Took way less time than I thought, so that's great First I made all the wiring, attached the two sensors, the peltier modules and a switch: IMG_20211208_213036.jpg Then I went through the tedious step of programming the arduino, writin...
by Dui, ni shuo de dui
Dec 06 2021 9:30pm
Forum: EScooters/EMotorcycles
Topic: Supercapacitor
Replies: 6
Views: 316

Re: Supercapacitor

I think it could be a good way to get decent current discharge even from a weak battery. Basically you only need high current during a few seconds while accelerating, the rest of the time you don't need nearly as much. Weak batteries will have lots of voltage sag under load, lowering the bike's perf...
by Dui, ni shuo de dui
Dec 01 2021 9:46pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

I worked mainly on the rear swingarm and the battery box these past days. The bike had a lot of play in the rear swingarm and that bothered me for a very long time. Made the bike slightly unstable while cornering on bad roads, I couldn't feel where the rear wheel was for sure. Basically all the pivo...
by Dui, ni shuo de dui
Dec 01 2021 8:52pm
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 49
Views: 1049

Re: Optimum Battery set up for my EV scoot Spec?

So battery Strategy wise I'm thinking 26S10P...LiPol 3.7v, 20C ,6000mAh.. Gone with 1200A -Is that too much?!? I do need to check Controller Spec can handle this.. Think I'm getting the hang of spec'ing the battery now. All learnt from this forum and the comments on the Thread -Cheers :bigthumb: No...
by Dui, ni shuo de dui
Nov 30 2021 4:18am
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 49
Views: 1049

Re: Optimum Battery set up for my EV scoot Spec?

I checked out Li-NMC 25Ah-30Ah High Power Pouch Cells which I can get from a local company, so 4 or 5 will get me around 100Ah @ 96v = 9.6kWh... It's now time for a little exercise: Given the examples I showed on my previous post, can you deduct the minimum C-Rating your cells need to match in orde...
by Dui, ni shuo de dui
Nov 30 2021 1:50am
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 49
Views: 1049

Re: Optimum Battery set up for my EV scoot Spec?

I need 96V in series and then a given amount of Ah in parallel to gain my range, so its all about how many nmc pouches of cells I can squeeze into my scoot package space and at the same time balancing weight and adequate cooling... Am I on the right track, or completely left field? Yeah, pretty muc...
by Dui, ni shuo de dui
Nov 26 2021 4:41am
Forum: EScooter/EMotorcycle Build Threads
Topic: Ninja 250 "Clone" Made in China
Replies: 104
Views: 25988

Re: Ninja 250 "Clone" Made in China

I know it's a bit late to ask this-but why didn't you reinforce the horrible bends of the lower frame tubes in the front part, as you did it with the other two/four bad bends ??? IMG_20211117_201734.jpg That's because I can't, unfortunately. Otherwise I'll have no way to install the battery box bac...
by Dui, ni shuo de dui
Nov 25 2021 8:47pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Conversion of a Bultaco Sherpa
Replies: 145
Views: 8543

Re: Conversion of a Bultaco Sherpa

The yellow thing looks like a plug - if so, I could unplug it and add double cables after the plug: Do you think this would be possible? Yeah, totally. But if I may, a better way to do it would be to ditch this yellow plug entirely and directly solder your new wires onto the BMS terminals. You just...