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  1. F

    Possible issue with new Mac motor

    Thanks for your reply The motor did jam a couple of times, as in it could not move at all, but then seemed to come free. The motor requiring a lot of force to turn was an observation and I do not believe the shorted phase wires were related to the jam. Thanks for the advice that will be very...
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    Possible issue with new Mac motor

    Thanks for the replies. It turned out the resistance was because I wrapped the phase and hall wired up to protect them from damage and all the phase wires were touching each other. Once they were no longer in contact it was able to spin easily. There is no rattling inside the motor. I should...
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    Possible issue with new Mac motor

    Hello all, I recently bought myself a Mac motor kit from em3ev of which appeared to function perfectly when I did a short powered test of the motor and controllers. At the weekend I finally got a chance to start installing it properly and while modifying my torque arm I realised that the wheel...
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    Replacing hub motor power/phase wires.

    Hello I was hoping to upgrade my hub motor over the half term holidays but looks like I have left it too long so I will do some much needed maintenance instead. The wiring from my DC brushed motor to the controller gets warm, sometimes too warm when going up hill and as it is about 5 years old...
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    Upgrading PDQ powertrike hub motor

    Thanks for the replies. I just contacted Team Hybrid. They advised the Heinzmann motor which is of an 11 year old design but is apparently incredibly reliable. It appears to be a simple DC brushed motor and after finding the datasheet it does not appear to be much different from my existing...
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    Upgrading PDQ powertrike hub motor

    I have yet to get any responses. Either I have posted this is the wrong section or you are all too obsessed with speeeeed to care about reliability in your hub motors and controllers. :P Is it worth moving this topic to another section (like the electric bicycles/e-bike technical section) of...
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    Upgrading PDQ powertrike hub motor

    Hello everyone. I am in need of some advice with upgrading the hub motor to my trike: Basically it is a wheelchair modified with a bike front end designed to hold a hub motor and battery pack. It has been a few years since I bought the trike, over the time I have had it it has been...
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    Constructing my first battery pack questions?

    So all is well, that is good. Thanks I have looked into buying cells from quite a few places but the problem here in the UK is availability. Buying from overseas is always more expensive because of delivery costs. The seller I used had really low delivery costs and I worked it out to be...
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    Constructing my first battery pack questions?

    I ordered the BMS in the link in my first post. I did notice that in the info it takes the BMS between 0.5 and 2 seconds to respond to an overcharge. If it is the case that these cells were the strongest cells and they reach a high voltage quickly past 3.65v could it just be that the BMS did...
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    transformer isolated cell balancing?

    I thought up a similar idea not too long ago. Theoretically it would be a far superior method of charging as all the cells are charged individually and it is possible to build. However each cell would still have to be current and voltage limited by circuitry, like each cell having its own single...
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    Constructing my first battery pack questions?

    Hello everybody This is sort of a continuation of this thread which was about me trying to find out what I needed and needed to know to make a battery pack: http://endless-sphere.com/forums/viewtopic.php?f=14&t=47329 I am building a 36v lifepo4 battery pack and I have bought these parts and...
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    eBay chinese 36v battery chargers

    Some time ago I bought a 36v Sealed Lead Acid charger that looks just like this one made by Qili Power. I just had a look and the model number of mine is QL-09005-B3601500F which appears to match the code you found. I bought it at the time because I needed a charger for my SLA (sealed lead...
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    Making a battery pack

    I joined BMSbattery and I thought they were cheaper right until I saw the delivery cost for the cells. It was the same as the cost of the cells. As a result I will not be buying from them but I did find this website: http://eclipsebikes.com/headway-lifepo4-38120s-10ah-p-1011.html The items are...
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    Making a battery pack

    It appears as though this topic has brought up some arguments. Hmmmm I have seen a few examples of people who have made packs from old laptop cells and although a novel idea with some merit I would imagine that keeping such a pack balanced and in good condition would be difficult as every cell...
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    Making a battery pack

    Thank you for your replies I know it would be easier and most likely cheaper to purchase a ready made one but the fact is that I am currently really getting into subjects like physics and chemistry and hope to study an area of science at UNI ,haven't decided exactly what yet. This is mostly...
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    Making a battery pack

    I have just found this topic: http://endless-sphere.com/forums/viewtopic.php?f=14&t=38284 I am a bit embarrassed I did not find it sooner but there are so many topics. I will read into it in more detail tomorrow and it does put a big question mark over BMSbattery. Still I always like the...
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    Making a battery pack

    Hello everybody. I have one of these: http://www.google.co.uk/search?hl=en&q=pdq+power+trike&bav=on.2,or.r_gc.r_pw.r_qf.&bvm=bv.41524429,d.d2k&biw=1280&bih=868&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=xFoFUfPWFYGV0QX71IGYCQ Fundamentally it is a wheelchair with an attachment for the...
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