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    GNG gen2 (roughly 2013) planetary gear repair

    I dunno if anyone still has one of these gng gen2's ..but i do and its still going - sort of. Got a worn planetary gear, but when i popped it off i found that the post had been sleeved . Post diameter being 6mm & bearing ID 8mm. My first thought was damn GnG too cheap to build bigger posts or...
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    Gng Gen2 hall sensors

    Does anyone know much about the internals of a gen2? mine was going fine until i got into some really sticky boggy mud and that stopped it. Im getting some strange readings on the hall sensors and am wandering if anyone has replaced this part on a gen 2 before - if you have - where did you get...
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    Powerall Goliath hack?

    Ah ha - misleading advertising to state a voltage but not the capacity in relationship to that voltage
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    Powerall Goliath hack?

    Has anyone hacked the Powerall Goliath lithium battery charger. http://thepowerall.com/index.php?route=product/product&path=304_305&product_id=100 The specs state 24v@32000mah which to me equates to 12v@62000mah which would roughly make a 36v@20ah bike battery. they say they're good for a...
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    BMS New (?) controllers ?

    Wish I'd known that when I bought the controller , now they want almost $50 in postage for a $2 part
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    12V A123 LiFePO4 w/ BMS car battery replacement?

    EV Power in Australia sell lifepo4 battery packs manufactured as car batteries , I think they have one tested as a daily driver over a few years now .
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    How to Solar Charge an Electric Bicycle

    I really like this topic , but it seems most have missed the point ! Being able to charge an electric bike from solar isn't about the most efficient use of the solar panel .... It's firstly about being able to use the sun ( not everyone can grid connect their house ) , then it's about...
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    A123 20AHr Pouch Cell Battery Build & Info Thread

    I read a couple of posts about the material used in the osn kit and as a first time battery builder I can vouch that after I shorted the pack ,welding the socket and bar across 36 v, that the epoxy does not burn or melt untill the metal bars , bolts and tabs are bright orange and /or evaporating...
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    GNG Drive Gen2

    New crank arms seem to have fixed problem , although the third freewheel I bought sounded remarkably smoother than the last two I had . I have had almost 200km of trouble free riding and then the chain snapped , well at least three links on one side, not completely snapped , but unuseable. I...
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    GNG Drive Gen2

    Im gradually finding parts for my gng gen2 .... Ive just ordered new crank arms from eclipsecycles in the uk after following a lead to cyclone tiawan and discovering hideously expensive postage to australia . From uk much cheaper ! I havent pin pointed the problem yet , but im hoping it was a...
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    GNG Drive Gen2

    More shenanigans ... Not sure if this related to my previous post but the freewheel bearings blew out ..... Anyways thought I'd try to get a local replacement and have found the thread on the replacement freewheel is different to the gng. Has anybody found this , do freewheels generally come...
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    GNG Drive Gen2

    Thanks everyone for your help .... I have solved this problem but I wouldn't have done so without the support and flow of ideas ........ I was rechecking everything and found I could run the crank arm and flywheel together on the bb ... Same problem - but success because It seemed the issue was...
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    GNG Drive Gen2

    Thanks spinning magnets and db baker . I'm rulling out the connection b/w the crank arm and spindle because when I rotate the freewheel with the crank arm and spindle stationary I get movement through the crank arm .... To and away from the frame .The bolt that attaches the crank arm to the axel...
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    GNG Drive Gen2

    I purchased a GNG Gen 2 a couple of weeks ago and it arrived very quickly, but i am having problems with the freewheel crank assembly. When mounted on the BB the crank wheel oscillates away from and to the frame when rotated. It does this if i rotate the crank gear by hand with the freewhel open...
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    A123 20AHr Pouch Cell Battery Build & Info Thread

    So it seems Victpower no longer have short tab cells in stock and are selling a full tab for $20.....that seems a little too good to be true , but has anybody had any experience with this latest offer from victpower. They sent me a picture of a cell covered with the all the barcodes etc and...
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    GNG Drive Gen2

    Yep, totally agree... I've seen the petrol driven mods get picked up by the cops in the city .... They're regular cop magnets although where I used to live that description could have easily applied to the rider. Now I'm in sw w.a, Margaret river ..... I think I will be fine , thanks for the...
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    GNG Drive Gen2

    Thanks for your replies.... I am in Australia , we have a 250w law , or you need to have a motorbike license.... Soooo I'm thinking I don't want too much speed ... Just wanna keep that motor spinning at peak efficiency , not go too fast and hopefully appear invisible! Yes the motor will stand...
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    GNG Drive Gen2

    Hi, I'm new to this , I've been following the gng threads for a month or more . Can anyone help me understand how I can choose a motor that is going to be most efficient . I see a lot of posts that are about beefing up the output for maximum speed or hill rock climbing , but I want to build a...
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    A123 20AHr Pouch Cell Battery Build & Info Thread

    Im yet to build but i think the vibration point is valid for ebikes. For me more so because i dont do suspension and i have highly corrugated roads to travel along....and even without those, a bicycle goes through many more impact events (paths,gutters,potholes, being dropped !) than a car with...
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    A123 36v 20ah victpower custom duct tape pack ?

    Thanks heaps Raygo......now im swinging back to building my own. That Osn kit looks alright.....thanks for reuniting me with that thread.....interesting stuff going on there in the last week!
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    A123 36v 20ah victpower custom duct tape pack ?

    Thanks for the great responses. I did not mention that I also looked into English taobao after the links were published in the 7s3p thread What i found was that while the loose cells and modules are cheaper ,that the approx shipping price I got quoted for loose cells actually made them more...
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    A123 36v 20ah victpower custom duct tape pack ?

    Hi, I just got through reading the entire 7s3p thread after getting really excited with all sorts of potential ideas, but overall I came to the conclusion victpower is not completely sure of the product they sell. However there are just enough happy stories to keep the interest going , and...
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    Buying batteries, trusted sellers?

    Hi , Im intending to build a 36v 12ah battery for an electric bike project and i have gotten a bit overwhelmed. I had almost narrowed my choice down to headways which are sold locally by ev power. This is after I persued different ebay options and got to the point where i just couldn't...
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