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  1. T

    BMS-Free, info for the curious on bypassing the BM-mess

    this info is out there and spread out all over, so here's a dedicated "BMS free zone"thread specifically for this, when starting out BMS can easily be the biggest pain to understand, most don't even have a brand and each have obscure specs making them hard to compare, and then many very easily...
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    diy tubeless tires for ebike anyone?

    just got a stem flat after taking the ebike up a very inclined driveway, 0% throttle, i was about to get another thorn resistant tube when i started looking up some tubed to tubeless kits id seen on bikeforums once because, i must have gone thru 20 bike tubes in 2 years after a while i found...
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    Hub seizing hard to push- roll looks good inside

    alright so things have been going great with this desheng hub, last week i was pulling another bike along for a good distance no problems, the motor was pretty hot when we arrived and a couple hours later had cooled but it had a real tough resistance when walking the bike, and giving it power...
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    New Battery Tech, last 30yrs, nanotubes, self repair viruses

    http://www.eweekeurope.co.uk/news/researchers-invent-everlasting-battery-material-47222 " The researchers have not yet built the revolutionary battery itself, but the crystalline copper-based nanoparticles would be a key component for its electrodes. Apparently in laboratory tests, the...
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    ugly forced sound coming from new hub motor no load

    anyone know what this problem could be? i just put together this ebike all cables are color coded the same way n it spun when upside down, its my 2nd ebike ive built 1st had no problems, even before putting power to it it had some sort of weird resistance problem sometimes when hand turning...
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    what ESC controller is this? anyone know how to wire?

    its from the cycle9 clearance that went on a couple months ago, unfortunately our friends there had to close so my emails have gone unanswered, im trying to connect this to one of lindas headway packs, i figured the battery would connect at the thicker 3 way red black orange connector with a...
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    help with vandalized lifepo4 pack troubleshooting

    copied from the fb page my pack is an ebike kit 36v 9ah in an alum box, its got a bunch of soldered batteries inside and some bms, its what ebikekit used to sell before they stopped selling lifepo4 (??), ive been able to succesfullly charge it it seems, but the battery cable to ESC gets pretty...
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    GPS tracking $20 + $0.99 per ping after

    posted this in a antitheft thread but i think it deserves its own headline since most ppl would expect chains and alarms there, should we jump on this as a group thing or is this a dud? i think it looks promising like those $7 spycams, heres the original thread...
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    scooter skateboards 49cc gwheel or wheelman to electric?

    anyone seen any of those cool skateboards? heres a pic http://i.imgur.com/6LRZd.jpg i have no idea what they use but i bet theyd sure be a nice toy and real sweet looking if we could make these electric aparently theyre very popular in korea
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    Securing Theft and Vandal Proofing ebike ideas?

    what do you guys do to protect your ebikes? i leave mine at school and havent had any issues but its occured to me that anyone for whatever reason could cut off some of the cables at the wheel, by the ECU throttle etc just for the hell of doing it and that would surely ruin our day, most people...
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    Tesla use Laptop batt for $200/ kw so why not we?

    i read an article a couple days ago about them using 18560 batteries which since are already mass produced for laptops, are significantly cheaper than all other types of batteries, ebikes needing much less batteries, could we tap into this source of cheap lithium batteries? i did a search and...
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    gears, why not use an old bikes derailleur shifter mechanism

    ive seen lots of 2 and 3 speed transmissions lately but dont we already have a derailleur transmission on bikes in the first place? how easy would it be to chop the lower part of the diamond off an old bike, put a motor on the end where the crankarms go, and a friction drive on the other end and...
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    insane bright diy light torch like car Xenon HIDs?

    http://www.youtube.com/watch?v=940QBkbPosw&feature=watch_response http://www.youtube.com/watch?v=IhiHNzx0tMA&NR=1 what do you guys think? ps the video is old like 08 so im sure theres better things out there, i just missed a deal on the Fenix flashlight but this seems so much brighter and fun...
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    whats your speed MPH - KmH, Range and Bike

    ill go first, my motor and controller is an ebikekit 36v kit, battery is lifepo4 9h 36v on a 26in mtn bike and i havent drained it all the way but gotten 16+ mile range so far and get about 18-19 mph, a bit slow after i read the ebikekit SLA review getting 23 mph what other setups do you guys have?
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    Android and Iphone what apps?

    i just bought an android phone they keyboard sucks but its very small and portable, i downloaded mytracks from google its legit, google also has a navigation app, is there any others you guys recommend? these things are pretty cool, no wonder apple made an obscure patent mating an iphone with a...
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    tire stem failures? SHRADER valve vs PRESTA?

    hi i was just getting out on my bike today and as i was accelerating moderately, my tire must of slipped with the rim and i ended up with a flat on athick thorn resistant wheel, i just wanted to know if this was common or if anyone had ever expereienced something like this? im thinking getting a...
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    mikes FU to gas-mobile username thedarlington

    i was workin on my bikes all day yesterday and just wanted to upload some pics i took, the red mtb is my daily commuter, the other red road racing bike is just for fun since its got cleats and its hard to get off if i have to walk around in those, the newest member is the silver one with the hub...
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    BEST LOOKIN BIKE SPEEDO!!!

    alright so ive been lookin for a new speedo cuz the one i got sometimes acts funky, its been good its one of those black with red squared ones on ebay, but check this one out! i just wanted to share this with u all hopefully more than 1 person here likes it they got em on ebay, im sure...
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    Backpack battery?

    any reason not to? id only need to work out the cable issue but i have full suspension so a flimsy seat post mount is probably my only option, im sure this is a much better option atleast while i can come up with some type of full suspension pannier rack, im just wondering what risks it has, if...
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    Arduino like chip for $2 for BMS microcontroller? 8bit & ARM

    i was just lookin around and i saw this great deal, on something i have no idea what it could be used for, i got class in a bit but i didnt wanna forget to post so ill leave it up here and hopefully someone more knowledgable can say wether this has use for us or not, im thinking mainly for a...
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    CVT tranny from minibike?

    saw this for around $83, i dont know much all i know is its those fancy new CVT type transmissions like the prius and most new electrivc cars wanna have, its made for 2strokes n small engines, wanted to know what u guys thought about using this at $83 it doesnt seem to hard on the pocket...
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    what 36v charger? lifepo4, maybe also lipo?

    im currently looking for a 36v charger for an ebikes.ca 36v lifepo4, id like something i could use for this and other future packs, say headways or a123's, maybe even some lypos, i can go with the ebikes.ca site but im lookin at my options before commiting, they even advertise 1 for 36v life...
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    BYD auto- largest battery manufacturer- batteries for sale?

    i was reading an article earlier today about BYD the company warren buffet placed bullish stock bets on, seems the guy is very confident about these guys, they started producing cell phone batteries and are now moving to produce electric cars and... even buses?? it seems like this is exactly the...
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    biggest turnigy/turnigy motors right now?

    ive currently got a hub motor but ive always wanted to get into turnigy because i could easily swap out the motor to play with it in something else easier, RC planes cars etc, but not knowing anyone with these or having ever seen one, ive got no clue and they really all seem about the same on...
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    larger RC planes?

    i was just wonderin if anyone here was into those given that alot of us use RC components like hobbylobby and we probably have enough batteries in our bikes to fire up a pretty big bird
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