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  1. Pablo_1985

    I need to get up to speed for recommending a kit

    Thanks for your comments Bullfrog, I´ve given my recommendations to my friend, we´ll see where he lands, he also is reading without login... :pancake: Best, Pablo
  2. Pablo_1985

    I need to get up to speed for recommending a kit

    Sorry, I don´t know why I didn´t think about googling...: q85= 1,6kg q100= 2.1kg q75= 1.2kg (200w) QSWXK5= 3.283kg https://bmsbattery.com/ebike/595-16236-q85-36v250w-front-driving-v-brake-e-bike-motor-wheel-ebike-kit.html#/214-rpm-328 So I´ll update options: Option 1: 200w light...
  3. Pablo_1985

    I need to get up to speed for recommending a kit

    Hi motomech, I saw that one too, but maybe it´s just a a little bit small? that´s why in my options I offered the bigger version which starts at 10ah and goes up to 14ah...
  4. Pablo_1985

    I need to get up to speed for recommending a kit

    Hi there! I see you guys are not having problems with the motor in the front, I guess that the low power helps, so I´ll stay with that. BTW, it´s a friend, not my dad, I said at the beginning that when I entered the forum I was a student (joined the forum on Feb 19 2009), but know long time has...
  5. Pablo_1985

    I need to get up to speed for recommending a kit

    Hi there! Thank you for your answers. the donor bike is an old road bike: https://es.wallapop.com/item/bicicleta-de-carretera-554196273 I´ve contacted bmsbattery, because I think that a kit around the Q100H motor (350W) with a 36V 10AH battery pack for the downtube would be allright. I keep...
  6. Pablo_1985

    I need to get up to speed for recommending a kit

    Quick reply, first thank you very much for your answers. I'll research deeper what you guys are giving me. Talking with him further, he basically wants help starting (stop and go) and actually is OK with the system stopping assisting at 20-25km/h, he could be OK with a single speed. So...
  7. Pablo_1985

    I need to get up to speed for recommending a kit

    Hi guys, It´s been a long time since my last post, no I am not studying anymore I am a dad and all that... The thing is I have a friend asking me questions and I know that things have easily changed a lot since when I used to be here. So here I come with some newbie questions. He wants some...
  8. Pablo_1985

    headway 38120, fully discharged, are they dead?

    Wow! That sclated quickly! Was the BMS Some familiar of yours? You took it personal! Hahaha, well at the end you are right it wasn't BMS Failure but the BMS shouldn't discharge the cells completely! But I Agree, the biggest mistake has been ignoring the pack for months. But I think the BMS...
  9. Pablo_1985

    headway 38120, fully discharged, are they dead?

    Thanks gus!! I already told him to remove the cables from the BMS, but not the power ones. Apparently he has a regulated power source from 0 to 50, i can check the current during the process, but at least i have the materials to do the job :). I will not disconnect the power cables from the BMS...
  10. Pablo_1985

    headway 38120, fully discharged, are they dead?

    A friend of mine left a 16 cells battery pack for months with a bad BMS (some cables where not getting the reading from some cells), so the BMS discharged all the batteries a point in whci the complete pack give 2 volts... He tried to charge it with its charger, but it doesn't charge it ( i...
  11. Pablo_1985

    Doc's Watercooled Hub motor project ( 5403)

    Beautiful work! I hope the windings transmit the heat fast to the aluminium core. Have you already think about using some thermal compound to improve the thermal transmission from the coils to the aluminium core?
  12. Pablo_1985

    Paranormal activity...WTF BMS? Cell from 2.9V to 8.5V???

    Oh, DVM, hehe ok, yeah i know that, one day i though my battery was going to explode, voltage was getting higher and higher, up to 90 volts, it was crazy! but then i understood that that didn´t make any sense and must be because something else... battery level. I will try to bypass the BMS, i am...
  13. Pablo_1985

    Paranormal activity...WTF BMS? Cell from 2.9V to 8.5V???

    Ok same thing... I rode home and at some point it just failed again. Now at home i have diconnected the controller from the battery and tried to charge it.... Nothing, it does not charge i guess it is the same thing BMS messing around cutting the fets thinking "SORRY MAN NOT CURRENT ALLOWED"...
  14. Pablo_1985

    Paranormal activity...WTF BMS? Cell from 2.9V to 8.5V???

    The voltage of the charger was normal aroun 58 volts i can not remember exactly. All the cells were 3.28 when i got to my destination, so not fully charged but 50%. I measure the voltage at the input of the BMS, and the 8.5V also directly in the cell. I have done 2500km with no problems...
  15. Pablo_1985

    Paranormal activity...WTF BMS? Cell from 2.9V to 8.5V???

    I have paranormal activity in my e-bike. Everything started when i hit bumps at full throttle, the e-bike shuts down and turn on in a matter of one second... i thought it could be a bad connector or something similar... but yesterday i had to pedal home because it shut down and didn´t turn on...
  16. Pablo_1985

    New High capacity Li-Ion high cycle count

    Merge them please, i did not see the other ones :S
  17. Pablo_1985

    New High capacity Li-Ion high cycle count

    http://www.ntsworks.com/New_Battery.html I get there from here: http://green.autoblog.com/2012/05/18/neal-saiki-claims-battery-breakthrough-gives-more-range-costs-l/#continued It seems to be the same guy who developed Zero motorcycles. Regards
  18. Pablo_1985

    Move to off grid home

    I have been thinking about this a lot and i keep not understanding why people doesn´t use LIFEPO4... just an example: http://offgridnz.livejournal.com/ and token from here the numbers http://www.solarpaneltalk.com/showthread.php?2214-LiFePO4-The-future-for-off-grid-battery-banks For me it...
  19. Pablo_1985

    My bike didn´t want to turn on today... :S... cold??

    Yeah the battery was in the cold, but there is not problem anymore it was just a fail in the faston connection.
  20. Pablo_1985

    My bike didn´t want to turn on today... :S... cold??

    Ohhh... the worst case scenario... the flux capacitor is not working! where can i bought a flux capacitor on XXI century? No really it´s more simple i am used to the typical scenario "BMS got FIRE and Battery is not balanced" or "BMS got FIRE and Battery is not balanced II" or "BMS got FIRE and...
  21. Pablo_1985

    My bike didn´t want to turn on today... :S... cold??

    Thanks but you are very optimistic, we are at step -1... at least! this evening i will update with something... i hope it is something very wrong or i will appear like very stupid... if not i allways can make up a story about the flux capacitor....
  22. Pablo_1985

    My bike didn´t want to turn on today... :S... cold??

    Hi guys! It´s been a long time since my last post... this was a good symptom... everything was fine... But today i´ve been forced to take the train for going to work... my bike didn´t tun on! :( I have the bike parked in my terrace, covered with an special blanket, the charger is also outside...
  23. Pablo_1985

    10kw hub motor :O

    ohhhh yeahhhh ;)
  24. Pablo_1985

    10kw hub motor :O

    This motor is big... seeing the size it seems that 10kw are continuous :O http://www.youtube.com/watch?v=9eBcl1RZWqA&feature=player_detailpage Regards
  25. Pablo_1985

    Battery case with balsa wood?

    Loooong time since i posted! but i had tooo much work, hopefully some of it on my e-bike!, Tomorrow i spect to finish completly just put the batteries and some conecctions :) Also i reinforce the dropout, so if i loose the bolts i the axle will stay in place without spinning (i learnt...
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