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    Reliable source for non fake cells?

    Hey folks, I took a long break from here after building my electric bike (which is kinda kaput for now) but back and bought myself an electric skateboard to fix which requires new cells (dead battery). Really looking forward to taking it out for some fun. It takes 18650 cells and I plan on...
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    Ideas on ebike charging and use?

    Hi folks, So I figured out I could buy two more 6s 5ah zippy packs and fit them in my housing, making a 48v 15ah pack in total, enough to ride to work and back on a single charge. I then bought a hyperion 14s charger and 3 dell 19.5v 6.7A laptop power supplies to power it with, I'm making...
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    Hall sensor positioning

    As far as making a car this project is dead. Basically from my calculations I could make a car with a range of 30 miles, probably back roads not highway. This would be enough to get to work and back; however there is a high chance I'll switch jobs or the company will get bought out sometime in...
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    Ideas on ebike charging and use?

    So its ok to put all the balancing connectors on the 3P together? so essentially making all the packs in parallel and 3 series? If I could wire all this into my battery box it would be awesome, one plug in and balance/charge in a single operation... :)
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    Ideas on ebike charging and use?

    Yeah I'm leaning towards buying a pair of extra 6s 5ah lipo's and putting them in my panniers with wiring and a plug/socket to connect them to the main housing on my bike. This will give me 48v 15ah which is enough to ride to work and back on one charge. Then when I get home I will use a new 12s...
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    Ideas on ebike charging and use?

    The box is kind of molded fiberglass, it is basically all one piece with a wooden door which is offset inwards from the edges. Its not easy to modify, but if I thought it was worth it I could do that. Some of my cells aren't really well balanced, I get perhaps 0.08v or more difference, which is...
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    Ideas on ebike charging and use?

    Hi, Thats a pretty good idea, I don't think I want to start with another bike. I'd rather tweak this one. I already have 6 bicycles in my workshop and I'm out of space! also I bought this particular bike just for E commuting on, and I customized it to be really comfortable for distance riding...
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    Ideas on ebike charging and use?

    Your last question I haven't tried this, would this be balanced or just regular charging? My other question is are there any boards or electronics to allow me to not have to plug/unplug things when I'm using or charging the batteries? I guess I could just buy 10ah batteries then there would...
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    Ideas on ebike charging and use?

    That might work, could be a real squeeze but I'll measure up when I get home and see. :)
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    Ideas on ebike charging and use?

    I don't think I have enough space inside the case for that. I thought about buying one of those headway 10ah kits on ebay and fitting the box with the headways permanently, then moving the lipo packs outside somehow. I would wire them in parallel and I could ride both ways on one charge and skip...
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    Ideas on ebike charging and use?

    Hi Folks, I have just partly rebuilt my ebike; I posted it in the builds section a couple of years ago but here's a pic of it now. I changed the motor from a rear DD golden motor to a golden motor mini, 36v front mounted unit instead. I wanted to reduce the weight and also be able to pedal the...
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    Please Help- Contol and Motor questions

    Hi Fechter, the motor that runs seems to run well. I measured the no load current to spin it at around 0.3-0.4 amps and I can put my hand on it to load it up and it just runs the same and draws more current just like its supposed to. I think what I'll have to do on the motor that won't run is...
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    Please Help- Contol and Motor questions

    The reason I didn't go into detail on the controller as its a long story, its a test fixture. I'm using an ARM microprocessor to write my own motor firmware to drive Honda insight electronics. I've already got it working on the geared motor. The motors and Golden motor controller are sensored...
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    Please Help- Contol and Motor questions

    But both motors work with the same off the shelf Golden motor controller; its just when I drive them from my controller the geared one works but the direct drive one doesn't...
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    Please Help- Contol and Motor questions

    Hi Folks, I haven't been on the forum for some time; I have been working on my own piggy back controller for a brushless permanent magnet motor and I ran into a couple of things. I think these are fairly simple questions to answer for folks in the know. So I have two test motors, both are made...
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    Using hybrid parts idea.

    Hi Live for physics, Yup this is a project I started just a while back (see blog at bottom). Mike D (from 99mpg) and I have bought microchip motor control boards to try and drive the honda MDM, I already have the wiring diagram on my blog. However at this point we probably need some input from...
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    Hall sensor positioning

    heheh, it would be except two of them are going in a car :)
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    Hall sensor positioning

    Hi folks, photo attached on where I think I need to add hall sensors to my motor. You'll notice further out from these points are some other sensors, these are the original commutator sensors for the motor that I cannot use. Thanks!
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    ESC issues with large vehicles and brushless motors

    Partially correct, unfortunately honda split the functions of the motor controller up. There are two modules required to drive the 3 phase motor, one is called the MCM and one the MDM, the MDM is a low level dumb IGBT module system that is driven by pulses to tell it to fire the invididual U, V...
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    Honda Civic Hybrid II battery pack communications

    You may want to go over to 'insight central' the forum for the honda car. Those guys do a lot of mods on their cars and might be able to answer this. I myself am trying to reverse engineer a honda 3 phase controller to use in an electric vehicle.
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    ESC issues with large vehicles and brushless motors

    Thanks! I'm actually looking into using the hybrid motor and controller from a honda automobile to drive my bug. Its designed for this kind of thing, the only problem is the reverse engineering required to make it work. The module that controls the 3 phases is quite 'dumb' in that it doesn't...
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    LiPo battery care and basic information

    The safe voltage is the maximum you can charge to, some people like to live dangerously and go to 4.3 volts per cell, others are conservative and run perhaps 4.1 volts. 3.7v is the nominal voltage, it changes over the discharge of the pack. The 3.3 volts you mention is the lower end, for lipos...
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    ESC issues with large vehicles and brushless motors

    I guess I wasn't aware there were other controller options open for this kind of motor? do you have any links? :)
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    ESC issues with large vehicles and brushless motors

    I've done some calculations on cable resistance and adding in cell resistance I'm very close to have a current limit based just off the entire resistance of the system. However I thought of another way around this, I could have a microcontroller on the throttle that would monitor the rpm of the...
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    ESC issues with large vehicles and brushless motors

    A bug!
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