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  1. T

    where to buy this battery?

    https://www.allcelltech.com/index.php/products/battery-packs/summit
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    Noob questions about Credit Score

    so i'm 19. The car my bro gave me just broke down so i'm trying to buy a used car and i went to inquire for a used car loan from the bank. They asked me about my credit score and stuff and i honestly have no idea about it lol. So from what i've read, my credit score are automatically created...
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    Recommend me a Good Electronics/Physics Book

    What's a good book to learn more about the physics of electricity and more about electronics? I don't want something easy, but not something too hardcore. I want a book that will teach me practical things. I actually learned all this stuff back in 9th grade during high school physics but i...
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    Woman posts to facebook and Takes selfie while driving, Dies

    So this woman is dumb enough to to post to facebook about a song and takes a selfire while driving. She dies in a car crash right after. http://www.nydailynews.com/news/national/north-carolina-woman-dies-behind-wheel-texting-happy-article-1.1769965 This may sound messed up, but i'm glad she...
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    DID heartbleed affect endless-sphere.com?

    did it? u noticed some threads on this forum gives me browser a certificate warnign and when i ignore the warning, i'm taking to the thread via https protocol, not sure whats that all about.
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    Possible AWesome Ebike Frame - Police Auction

    Was hecking the police auction site and found this bike, it looks pretty awesome for an ebike build. I would buy it but for other reasons, i can't do so right now, but i wanted to give a heads up to anyone who's interested in the bike. The Swingarms look beefy as hell and the frame has a lot...
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    What lacing pattern do you use to lace spokes?

    What lacing patterns do you guys use on your hub motor and spokes to build the wheel? Three cross? what's the strongest patten for lacing electric motors?
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    How to install 12v Motorcycle horn on ebike?

    i want to install this on my ebike, but i don't know what wires, buttons, or switches i would need to make it work, anyone knows? it's a pretty barebone item...
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    KU123 500w Controller with 1000w Yescomusa kit?

    I just bought the Yescomusa kit and it'll come in a week or two. I am going to buy some stuff from bmsbattery.com and decided to add a couple of extra items in the purchase since the real cost was shipping. I'm thinking of buying some spare controllers from bmsbattery.com for the yescomusa...
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    Does charging battery to 90% Really extend battery cycle

    I've been watching of of this dude's video and it's pretty fun to watch. https://www.youtube.com/user/bjornnyland/videos I noticed he only charges his Tesla model S 18650 car battery to 90% because he says it helps extends overall battery cycle life in the long run. Is this really true...
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    200mm rotor fits yescomusa usa motor?

    so i'm thinking of getting a new version of the yescomusa motor kit, this one has holes for disc brakes. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=111209713494&ssPageName=ADME:X:RTQ:US:1123 and i'm thinking of getting avid bb7 200m rotors for it...
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    What Spoke Length to use for yescomusa kit and 29er wheel?

    I'm using a bafang bpm 2 with 700c wheels on my 29er mountain bike right now. I want to buy a a yescomusa usa kit and try it out but i don't know what spoke length the motor needs to fit a 700c/29er wheel, anyone knows? I tried ebike.ca spoke calculator, but the results it gives are wrong, i...
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    How to go about Charging 12 packs of 4s1p Lipos?

    Seriously thinking about getting Lipos now, i want at least 48v and 15ah so i'm getting 12 of these lipos pack. putting them in series and pararrel for 59.2 v and 15ah. Each lipo pack is 4s1p: http://www.hobbyking.com/hobbyking/store/__15521__Turnigy_5000mAh_4S1P_14_8v_20C_hardcase_pack.html...
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    ebika.ca VS bmsbattery.com ebrakes?

    Any reason why i should spend extra on the ebike.ca ebrakes? seems like they are selling the same cheap chinese ebrakes that bmsbattery.com is selling so i don't know why i should spend more for the same item? unless anyone else knows why then please save me from making a bad purchase...
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    Can anyone explain why geared more "provide more torque"?

    i've read alot about people saying "geared motors provide more torque than direct drive motors". Can anyone care to explain why? Aside from direct drive motors being heavier than geared motors, what other reason explains why this is true supposedly? only reason i can think of is the weight...
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    How Safe is LIPO in Apartments? anyone has experience?

    I'm thinking of upgrading to a cromotor or HS3540 from my bafang bpm. But to really make the most of those motor, i would have to buy higher discharge batteries. Im thinking of switching to LIPOs from LIFEPO4. How safe can i be with LIPOs in an apartment with no fireplace? anyone has...
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    Anyone has Bafang BPM 500w motor with 29' wheels?

    http://www.bmsbattery.com/ebike-kits/348-bafang-350watts500watts-bpm-motor-e-bike-kit.html anyone has that motor or similar but with the 29 inch wheel options? how does that motor perform if i select the 700c wheel size option and fit the motor to a mountain bike 29er wheel?
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    Ghetto Biker kills old woman - speeding and popping wheelies

    SMH....more of these idiots in NYC, most of these thugs come from the bronx and brooklyn. This idiot was with a group of other thugs speeding, and popping wheelies on a busy intersection. I know this place, it's a scary place to cross. Now because of these morons, an innocent old lady is...
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    Are these fake Avid BB7?

    Are they fake? They seem to be too low price for a pair. http://www.ebay.com/itm/New-2012-Avid-BB7-Mountain-Mechanical-Disc-Brake-Calipers-HS1-rotors-160mm-/230831140772?pt=US_Brakes&hash=item35be9bafa4
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    Isle of Man - Crazy SH*t!

    so i play GT5 and i like the song, "soul on display" so i was youtubing the song and came on this video. Maybe you guys already know about Isle of man, but i sure didn't.....and god damn! This stuff is intense, the speed they're going at is just nuts, it's like super saiyan dragon ball z...
  21. T

    Is this possible and if so, what size spokes do i need?

    could i get this http://www.ebay.com/itm/Rear-Wheel-Electric-Bicycle-Conversion-Kit-24V-36V-48V-250W-500W-700W-800W-1000W-/290754592384?pt=LH_DefaultDomain_0&var=&hash=item43b252fe80 take out the motor and then install the motor on a 29er mountain bike wheel? i should right? if so, what size...
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    General question about amps....output more amps than input?

    i was just looking at my laptop charger today and the input to the charge is 100-240v, since i live in the USA, the input is 120v. also listed in the input is that it takes 2 amps. Now for the output, it outputs 19.5v and 4.62 amp......REally curious how you can take 2 amps and output 4.62...
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    Are these batteries any good for ebike?

    are these batteries any good for building and ebike battery pack? Any one has experience with them? i doubt these are real ultra fire cells. what's the discharge rate on them? it says low discharge but not sure how low...
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    More Thug "Bikers" Terrorizing NYC

    http://www.nydailynews.com/new-york/reckless-group-bikers-speed-midtown-manhattan-wheelies-article-1.1484966 Do these idiots ever learn? but then again it happens all the time in NYC and cops don't give a shit. i mean i see 4 Wheel ATVs driving down the road and nothing happens to them. ATVs...
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    Is the Yescomusa motor a Direct Drive motor?

    it's a described as a "brushless gearless motor" on the ebay sales page, that means it's a Direct Drive? http://www.ebay.com/itm/Rear-Wheel-Electric-Bicycle-Conversion-Kit-24V-36V-48V-250W-500W-700W-800W-1000W-/290754592384?pt=LH_DefaultDomain_0&var=&hash=item43b252fe80 By comparison the...
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