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    Last night I had a compact SynSR outrunner nightmare...(compact outrunner motor)

    I agree, 75V system voltage ( using low Rds_on 150V mosfets) is very logical choice for safety and many other reasons. Not sure about the USA, but in the Low Voltage Directive in the EU states 75VDC as the absolute allowed maximum voltage for "portable" equipment.
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    Last night I had a compact SynSR outrunner nightmare...(compact outrunner motor)

    [spoiler=liveforphysics]Infineon has very interesting IPP110N20N3 200V TO220 mosfet, Rds_on 11 mOhm. Two or three of those paralleled... IPP051N15N5 is their 150V version, Rds_on 5 mOhm. Very suitable for sub 75V systems...
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    Last night I had a compact SynSR outrunner nightmare...(compact outrunner motor)

    This is what I saw in my dream, compact parametric SynSR outrunner for ebikes: Straight stator version (0 deg skew): 203mm brake disc for size comparison: Winding scheme by http://www.bavaria-direct.co.za/scheme/common/ : Skewed stator version (10deg): Technical data...
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    No BMS - Do you use a fuse?

    One possible choice is Littelfuse 0326015.MXP 15A, 125VDC, slow blow, ceramic 6mmx32mm. Sizing(15A): 15A=4h continuous, 20A=1h continuous, 30A=5 to 60 seconds. In reality, those 15A fuses never false-trip at 15A peak and can be used all day long, so sizing is really simple - just pick your peak...
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    Sanyo NCR20700B 4250mAh cell is here!

    For 20A use, there is Sanyo NCR20700A. A version has less capacity than B version (3.1Ah~3.3Ah vs 4Ah~4.25Ah), but I_max=30A short burst. Pdf of the A version is here http://akkuplus.de/mediafiles/Datenblatt/Panasonic/Panasonic_NCR20700A.pdf
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    Sanyo NCR20700B 4250mAh cell is here!

    Sanyo NCR20700B 4250mAh cell pdf is here: http://akkuplus.de/mediafiles/Datenblatt/Panasonic/Panasonic_NCR20700B.pdf Current price in EU is 14€/piece, but it is expected to drop soon. Specifications Rated capacity 4000mAh. Minimum capacity 4050mAh. Typical capacity 4250mAh. Charging voltage...
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    Project Triebflügel! Fifth movie uploaded.

    Report after one year: The first prototype was generally extremly reliable, controller has almost all of its bugs solved and the batteries are working as a charm. Two smaller bugs remains, it needs 5 seconds delay after switching on without the LCD screen conencted, otherwise it stalls if I'm...
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    Passion eBike 6 FET Kunteng Controller (S06S)

    Your version has 22A peak current limit instead of 14A, not sure if it is sine/vector/FOC or not. It should be very obvious, as the sine controllers are very silent. S06S V1 (before 2014) has the full date inprinted (2012-09-16 for example). Difference is the positioning of the LVC SMD resistor...
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    Passion eBike 6 FET Kunteng Controller (S06S)

    I've updated my second post with a better picture :D . There is already modified 13s (48V) version of the S06S on aliexpress for about 40USD with P&P. For 14S,the modification is the same as for 75V i.e. 100V capacitors, 400V snubblers (red capacitors) and 100V mosfets. You have to play with...
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    Passion eBike 6 FET Kunteng Controller (S06S)

    Here you go, slightly modified S06S V2 (2004- ):
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    Passion eBike 6 FET Kunteng Controller (S06S)

    This is not the S06S controller. Both versions of the S06S controller has LM317 regulator closer to the left (capacitors).
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    Stronger Chain Help

    Ebike specific chains: http://www.kmcchain.com/en/search.php (pick "e-bike" on the list on that page), or http://www.connexchain.com/en/e-bike-chains.html
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    What can I use as fuses between parallel 18650 cells?

    Fuse or strip/fuselink, it does not matter as long as You have the correct conductive fuse area. To calculate it for Ni, see Cu fuse area values bellow and derate it accordingly. I see that your cells are of different type (mixed red and green), this is not recommended att all. Recommended...
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    Bypassing the KT-LCD3 display

    You have only two wires, TX and RX (green and yellow). If you connect your display or arduino the wrong way nothing happens.
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    Fried Controller - IRFB3006 Rebuild?

    Ti CSD19536KCS 100V, 2.3mOhm.
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    Improving bottle battery connectors.

    Good connectors are very expensive. If money is no object, M23 hybrid connector can carry 5x30A at 850V DC. It can provide power (2x30A per wire), charging wire (1x30A), throttle, brake, cruise, +5V, and nitro signal, display wiring. All in one standardized connector. 9W4MCLRMGMI
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    What controller is this? Help to find a replacement

    That controller is NOT S06S V1 & V2, S06S V1 & V2 components are placed differetly. S06 outer dimensions are on the left side, there is probably a typo in the document as the s09 is probably to the right: S06S dimensions: less than 81mm(+11mm holder)x52mmx31mm. Dimensions of the S06S printed...
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    Another suspected ebike cheater

    She has only herself to blame. Kepler told her not to burn out in public! :shock: :lol:
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    Flying on plane with a e-bike/scooter with Lithium ?

    We seem to be off topic here:). On the other side, ebike friendly travel destinations are a very interesting topic deserving some space. To me, it seems that Califonia is the place to visit the first time? To anyone visiting Europe during the sommer, I can recommend Croatia. This EU country is...
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    Flying on plane with a e-bike/scooter with Lithium ?

    Belgium because I think I can beat the first contestant in that video*lol*. Pikes Peak for everything else off course:).
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    Flying on plane with a e-bike/scooter with Lithium ?

    ScooterMan: Pikes Peak would be fun:). That or this in Belgium: :D x0Vd1RK39EI
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    Flying on plane with a e-bike/scooter with Lithium ?

    I'm interested in this too. According to Quantas http://www.qantas.com/travel/airlines/dangerous-goods/global/en#electronic-devices-powered-by-batteries I could not open FAA link, I get some kind of wierd error. That link is here (click on Batteries and Electronics > Portable recreational...
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    Help? Q100 probably, on old road bike (first build)

    ScooterMan101: Answered via PM.
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    Help? Q100 probably, on old road bike (first build)

    BMS battery is OK, just make sure not to pay via IBAN (it's asking for trouble). Use your VISA card or similar via paypal instead. Choose Q100H 201 rpm with at least 13s (48V nominal, 54.6V off the charger) battery. This will give you about 30 km/h (18mph). BMS battery sells 36V S06S (external...
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    So I bought an Ego-Kit,the 3400W one. Worst Idea Ever. HELP!

    IMAX B6 stands for maximum of 6 groups (each 4.2V) charging at the same time. There is iMAX B8 too (8 groups of 4.2V each). I recommend to charge one group at the time, until you get familiar with the charger. Balance charging several groups with this charger may be tricky as there is special...
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