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    Definitive Tests on the Heating and Cooling of Hub Motors

    I have followed " Emmetts " method of sealing my new 3540 using J and B black ultra RTV and used sealed Nachi bearings ! No leaks for wire side , some weeping from pressure relief hole ! Using 130 cc of synthetic transmission fluid ! The improvement in cooling is dramatic !! Climbing the 12 %...
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    Definitive Tests on the Heating and Cooling of Hub Motors

    I love Justin and the contributions he has made . My experience with Statoaid: the motor cry 3540 R with cooling fins , the test continuous acceleration with no cooling period between accelerations , start 65volts at 100 amps . Run until thermal cutoff of 110 C reached . Motor stock 17 runs ...
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    3540 bearing replacemrnt

    Chilo please be careful riding your 250 watt super bike those tricycles might run over you !
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    Definitive Tests on the Heating and Cooling of Hub Motors

    Thanks Offroader I ordered the bearings you suggested only cost $ 22 dollars delivered ! Got the size form the Grin web site 17mm x 40 mm for all H Crysolite motors !
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    3540 bearing replacemrnt

    Thanks for your brilliant god like observation Chilo . Since you are all knowing I better not waste my time doing any original thinking . My motor is not leaking at ALL from the wires , the major leak is on the opposite side of the motor . Chilo better not use statoraid it is oil based and...
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    3540 bearing replacemrnt

    Does anyone know then bearing nomenclature for they 3540 crysolite motor ? I am trying to find a bearing replacement that will not leak oil through the bearing .
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    Definitive Tests on the Heating and Cooling of Hub Motors

    These bearings look like they could be the answer . Looks like they have a rubber seal around inner diameter where the axle passes through . I will check them out in the near future . Thanks !
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    Definitive Tests on the Heating and Cooling of Hub Motors

    Thanks Offroader for your comments ! I liked the term " stress test " reminded me of my medical stress test for my heart . A resting heart or an idling engine are not very useful functional tests . I don't spend all my rides going from 0 to 30 mph at WOT , but I did experience thermal shutdown...
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    Definitive Tests on the Heating and Cooling of Hub Motors

    This is sure to cause some controversy ! First my bike : Beach cruiser type frame 24 " x 2.5 " wheels H 3540 with cooling fins , battery 18 x 12 18650 pf cells , controller Lyn 18 FET 100amp . At wot 6000 watt max output . I ride on flat streets in Sacramento . If I take off at wot ...
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    Oil cooling your hub- NOT snake oil!

    I am going to use soybean oil in my 3540 motor . Safeway vegetable oil. $5 for two quarts. This is the oil used in high power transformers. Tested all over the world . No toxic (food grade). In case it leaks will do no harm to pets or people ! Put some in the freezer it did not freeze solid. Had...
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    Tesla Model S 18650 Cell Test Data

    Wow ! What fun , some REAL TEST data . Overall made me feel good about my newly made 18s 6p 18650pf battery. The differences I see between the Tesla cells and pf's are mostly explained by the 3.4 ah and 2.9 ah ratings , of the cells . Panasonic cells are good .
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    Chinese batteries

    Pedigo's battery recall. Pedigo is recalling 5000 battery packs , after some of the batteries in the pack shorted causing fire events . Unamed Chinese manufacturer. They will source batteries from Sanyo in the future. Good old Chinese batteries again.
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    BMS balancing voltage

    Thanks again ! You are the MAN !
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    BMS balancing voltage

    Is it a good idea to set the balancing voltage of the BMS at 4.1 volts ? Will this allow the max charge to be 4.1 volts , thereby charging the cells to 90% and extending battery life.New Panasonic 18650pf cells 18s12p 66.6 volts. Or go for multi chargers the hobby guys use ? Thanks ES source of...
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    This is how A123 care about quality control

    Nissan, A123 ? Nissan in class action suit over bad batteries in Leaf. No way ! Panasonic and Tesla . I hate malfunctions ! Own 8 bad 38140's out of a 40 cell pack, at 30 cycles. "Jake it's China Town" . Rising Sun or Korea batteries ONLY !
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    788 spot welder

    I recently obtained a 788 110 volt spot welder. Been testing it on flashlite batteries. I don't want to damage my 18650's . It works perfectly so far , hope it keeps it up.
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    18650 cell test: Panasonic vs. LG

    Panasonic 18650 cells usually test at the top for quality consistently. Why go with Chinese junk ? I just bought 220 18650 PD cells from CENTREX International for $4 per cell only $14 shipping LA to Sacramento. All cells at 3.62 or 3.61 v. How do they ship 23 lbs of Li batteries for $14 ?
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    Peukert number for lithium battery technologies

    CycleAnalyst installed ,questions answered !
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    Forget it, Jake It's Chi-town...

    Got any gasoline for the mower in the garage ? You think batteries are dangerous , try gasoline ! Gas is so common we all forget how dangerous it is ! Deaths from gasoline vs deaths from batteries , no contest.
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    BMS voltage settings

    I am ordering a new Bestech BMS for 18s 12p 18650 pack. Should I have the balance voltage set at 4.18v to increase battery life ? How about max voltage settings . They seem able to adjust the various voltages to order. What are the ideal settings for long battery life and decent range ?
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    788 spot welder

    Quick change triac ! Good idea !!!!
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    788 spot welder

    Thanks sooo much Syonyk !!!
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    Hubmotor Ventilation John's new (now old) approach

    Hi John. I weigh 190 lbs. The bike is about 80 lbs. Flat streets of Sacramento. I run 65 volts at max 99 amps setting on the CA, Lyen 18 fet 100 amp controller. No load current 2.45 a @ 50 mph. Don't know the phase current. By the way , how can the phase current be higher than the battery...
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    788 spot welder

    Has anyone used the 788 spot welder on 18650 cell connections ? I want to build a 18650 battery .
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    788 spot welder

    Does anybody have experience with the 788 spot welder sold on Alibaba ?
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