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    Vector Vortex battery box dimensions?

    Anyone here happen to know the Vector Vortex battery box internal dimensions? Need to know what size battery I can stuff in there. I emailed Vector, but I'll probably be waiting a while for them to answer back, so I figured I'd ask here in the mean time in case anyone knew, and I don't have to...
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    Enduro frame builders, how do you waterproof the holes you drill in the frame?

    All the previous frames I've used, typically came with pre-cut holes and grommets, going into the battery box area. My new frame has no holes, and I need to figure out a way to best insulated the interior battery area. I was thinking of using cable glands, maybe rubber grommets again. But I...
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    Is there a max voltage you can feed a Li-Ion pack while charging?

    Okay, I have a BMS that will cut off power from the power supply when the cells hit a certain programmed voltage (I'll be setting it at 4.1V). What is the max voltage you can feed a pack? Lets say it's a 22S pack, meaning 92.4V when charged to 4.2V, can you feed it 100V? Does anyone know? I...
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    Can the Sabvoton 72V (specifically 72150/72200) controllers run higher than 90V?

    Looking at different battery configurations, I was wondering if anyone can confirm whether or not the 72xxx series Sabvoton controllers can run at a higher voltage than 90V? Specifically the 72150/72200 controllers, since they are the same afaik, with a firmware tweak. I can build a pack up to...
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    Sabvoton controllers, any issues with no waterproofing?

    I was looking at getting an SVMC Sabvoton 72200, but I was informed that you can only get waterproofing on mass orders. So, doubting anyone has done that, I was wondering if anyone with an SVMC controller has had any issues with water/dirt ingress?
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    Found this very tempting bicycle frame... who's gonna do it?

    https://www.aliexpress.com/item/New-brand-City-Retro-Bike-Bicycle-Carbon-Steel-Large-Small-Wheel-Cycling-Bicicleta-Blue-Red-White/32824587628.html?ws_ab_test=searchweb0_0,searchweb201602_5_10152_10065_10151_10130_10068_10344_10345_10342_10343_10340_10341_10540_10139_10307_10060_10155_10154_10056_...
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    Just put Statorade in my hub motor... (QS205 related)

    Just put statorade in my hub motor, it is surprisingly easy to do. Anyone who is reluctant to do it because they think it will be difficult to do, or they don't have the right tools, don't be. I have a QS205, all I use was the appropriate allen key (surprisingly an SAE one fit better than...
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    Battery clips instead of welding/soldering/whatever?

    I was wondering if anyone here has ever used battery clips, for cylindrical cells like 18650s, instead of spot weldering, or soldering? I got a few of them from digikey, gonna test them out once I have finished designing a simple PCB for them, and had it made and shipped to me. I am curious to...
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    The Kelly method of waterproofing controller! (Funny)

    So as some people know, Kelly has as set of eBike specific controllers (KLS-S). I've been looking at them, as well as other controllers to get a specific set of features. Anyways, I was going through the options that Kelly offers for these models, and one of the options was waterproofing...
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    Any Controllers with independent vari regen and cutoff?

    I was wondering if anyone knows of any controllers out there, high power, that have both variable regen, and engine cutoff, as independent controls. So one could have ebrakes that cut power to the motor, for coasting, and then could have a secondary thumb throttle, or what not, to do regen? I...
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    QS205 in a Holmes 19x1.6 w/ Shinko 241, making a noise???

    Okay, so I have this QS205 V3 50H, in a Holmes Hobbies MMP 17"x1.6", with a Shinko 241 17"x3.00" tire. No power yet. But there is this deep hum and vibration in the frame when I give it a spin. It's laced and trued to about 1mm (+/- 0.5mm) for side/side and vertically (not sure of the terms...
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    Kickstand recommendations for Qulbix 140 frame?

    I currently have a cheap double arm kickstand, but it sometimes will spin a bit, which I think has to do with not being able to use the top piece(clamp?) that came with it, since the Qulbix kickstand mount is flanged on either side and the top piece is wider than the flange distance. The pivot...
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    How do you guys size your main fuse/breaker?

    I'm talking about the fuse/breaker between the battery and the controller. I've read a whole bunch of different methods online. One of the mathematical methods was to determine max battery current, and divide by 5, +-20%. So if my battery pack can put out 480A, than the breaker should be 96A...
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    What front hub to use in Motorcycle/Dirtbike rims?

    Greetings folks, I have a set of Warp9 rims, having some difficulty finding all the requisite parts to build the wheels though. The rear wheel I essentially have all planned out, just waiting for parts to show up. But for the front wheel, I need to use a bicycle hub that will take 12g spokes...
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    Know the name of this eBrake connector?

    I was wondering if anyone knows the official name of this eBrake connector? The one I have is only 2 pin though. http://imgur.com/a/qU7U4 It comes on the Magura MT5e, Tektro Dorado, Wuxing, and some other china-special ebrakes. One website referred to it as the 8fun connector, but that is only...
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    New forum subsections specifically for Build Logs?

    Greetings folks, Just wondering if it wouldn't be a good idea, under each major section (electric bicycles, escooter/motorcycle, large vehicles, etc...) if there shouldn't be a specific subsection just for build logs. Maybe it can be a place where once you are done your build, and you logged...
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    Magura MT5e disc brakes, really cheap!

    Although I guess "cheap" is relative, I bought a set of Magura MT5e brakes from a place in Holland, and they have been shipped to me here in Canada. Cost 184EUR for 2 sets!! They were selling for 74.34EUR each when I paid a few days ago, price has gone up a bit to 89EUR now. That's for the...
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    Parallel RC LiPos and BMS wires.

    When you are wiring RC Multi-S Multi-P LiPos in parallel, you wire the BMS for each cell in parallel as well, right? So a 4S 2P lipo battery would have 4 cell wires and a common wire, if you put 3 of those batteries in parallel, you wire the cell 1 BMS wires together, then the cell 2 wires, 3...
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    Adaptto and QS Motor, which temperature sensor?

    Okay, so QS offers 2 main kinds of temperature sensors, there is the KTY83/122 and the KTY84/130. Which temperature sensor do most of you guys choose? Which one does the Adaptto prefer, I can't find anything in their documentation about it, other than what sensor was installed in the...
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    Know of a HV, high power, Sine controller,that is IP rated?

    I'm looking for a high voltage, high power, sine wave controller that has an IP rating allowing the controller to sit outside the vehicle (eBike in this case). Battery pack voltage will be 111V (30S) nominal, and ~126V fully charged. I'd like to be able to push 100A battery current through it...
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    Sprocket... Brake Rotor... in one? The Sprotor!

    In my quest to figure out how to get the best of both worlds when it comes to having a high speed high torque motor, on a Qulbix frame, with a torque sensor for PAS. I've come up with, and come across, some crazy ideas. This one is the best I've found so far, anyone else come across this yet...
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    Anyone install a Temperature Sensor into a non-Hub Motor?

    I was wondering if anyone here has tried installing a temperature sensor into a non-Hub motor? Have any pics? I was looking at the new insane Cyclone 7500W motor setup, and asked around about it, doesn't have a temp sensor in it. I don't like that, seems to be just asking for trouble. I've...
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    Anyone here built their own "Cycle Analyst" type of device?

    Just wondering if anyone has built a cycle analyst type device, and how you went about controlling the controller. Like what kind of inputs and outputs are available from a controller to allow things like speed control or current control? I ask because there are some features I have come up...
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