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  1. BiGH

    Seat Tube Drive ebike

    Hope this isn't a repost but thought this was pretty awesome for the ultimate in stealth ebikes.... Seat post drive! http://www.treehugger.com/bikes/can-you-see-electric-assist-motor-bike.html
  2. BiGH

    a123 32157 8ah pack builds?

    Hi all, just looking to see if anyone has built an a123 pack from the 32157 based cells that appear around the place ie: I'm looking at building a pack using these cells (or headway as the alternative) and screw connectors joining the cells. at the moment i'm thinking these cells would be...
  3. BiGH

    BiGH's Second Build Thread

    I'm Back! a lot has changed since the last build got sold. I've moved very close to the city, (East Melbourne), still ride, but it's pretty irregular. (need to get back into it). While I love my road bike to bits, it's not the kind of think I'm going to ride to dinner after work and leave...
  4. BiGH

    WOOHOO a small win for me :)

    Just couldn't resist posting this. I'm very new to microcontrollers and the like, and just managed to setup the interface between an ATMEGA128 and a ENC28J60. Got pings, and got tuxgraphics code (FINALLY) to work on it. I'm a complete noob when it comes to all this crap, but the fact i can...
  5. BiGH

    BiGH's Second Project - Mitsubishi Electric (Mirage)

    Time for a second build thread. :D I was lucky enough to know the right person at the right point in time. Got it cheap because of the engine (see below), and my friend's Fiancee owned it. I snapped this beauty up for $500 AUD. Drove it home last night. No oil in the engine, and coolant...
  6. BiGH

    Caltech flexible solar panel 86% efficiency plastic/metal

    Caltech has released a flexible solar array that converts 95% of single-wavelength incandescent light and 86% of all sunlight into electricity. Instead of being flat-panel, they stand thin silicon wires in a plastic substrate that scatters the light onto them. The total composition is 98%...
  7. BiGH

    LiFePO4 Car Battery replacement Batteries for cranking

    Hey everyone, Has anyone used a lifepo4 car battery replacement battery? I know it won't save much fuel, but i wonder if you recharged it through the grid, and had a switch to turn the alternator on and off if it would help save a bit of fuel / provide more power. I'm considering doing some...
  8. BiGH

    can you adjust voltage on cammy 5a chargers? is 60v too high

    Hi Everyone, I got a 5a metal cased cammy 48v charger http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=170446185901, which on the box lists it at 60v is it just me or is this a little bit high on a 48v 20ah Headway battery pack? Does anyone know if there is an adjustment pot inside the...
  9. BiGH

    Lithium Car Motor Start Batteries.

    Hi everyone, I did a bit of a search and couldn't find any information on this so I thought i'd ask the question. A few places for example; http://lithbattoz.com.au/index.php?page=battey-packs and http://www.yesa.com.hk/ offer motor start batteries to replace your old lead acid batteries. What...
  10. BiGH

    Connectors for 48v multi-single cell charger setup battery.

    Hey everyone. Just looking for some advice. I want to make a single cell charger for a 48v lifepo4 battery pack, and i'm looking for simple and elegant connection. I was thinking of using a parallel printer port connector? or a molex conector, but i'm not sure how easy that would be to get on...
  11. BiGH

    integrating single cell chargers into BMS circuit.

    Hey everyone. I'm looking at integrating a single cell charger solution into my old YESA pack. (i'm still waiting on getting my headway pack back after the BMS broke on that :( ) Basically at the bms there are a bunch of wires running to each of the individual cells. can these be left...
  12. BiGH

    another stolen treehugger link- Li battery life breakthrough

    http://www.treehugger.com/files/2008/11/battery-life-breakthrough.php discuss! :D hope this is the case - 8x the capacity!!! i'm very excited!
  13. BiGH

    troubleshooting 5304 motor / 72v 48a controller problem

    hey all. I'm suffering a weird problem, with my set-up. I got to work, and then went to ride home, and the bike wouldn't go. there was no sparks no smells no rattling, nothing. The light on the controller was on, but it wouldn't move. There was no cogging, no nothing. Rotating the wheel...
  14. BiGH

    Any Framebuilders want to make a extra strong carbon frame?

    I can't rememmber if i've posted this before, but i was just wondering if anyone would actually consider makign their own ebike carbon fibre frame? you could use massive dropouts allow for extra large tyres, disc brakes, rack mounts everything. I certainly don't have the skill to do this, but...
  15. BiGH

    Dual Suspension Frames with rear steel dropouts!? exists?

    hey all. I'm finding the bumps a bit much at high speed, just wondering if anyone can suggest a dual suspension frame with steel rear dropouts? also something that would support a fairly good rack too (i'm not sure a single beam rack would support my batteries sufficiently (13kg).
  16. BiGH

    Spoke Breakage.

    Hey Guys, I'm still having problems braking spokes. It seems as though the spokes that came originally with the motor are all letting go. The replacement spokes (which are 14ga) seem to be holding up fine. I'm not sure if this is a quality issue with the crystalyte spokes, or what. Has...
  17. BiGH

    2WD Crystalyte based Ebike Drive Bias Discussion

    I'm having a debate with Albie at the moment, about whether any of these systems would work (they're all 2wd systems) clearly a 407 front and 407 rear motor with matching controllers ran off the same throttle would be fine (both running the same voltage). ok now what if we were to have two...
  18. BiGH

    Yesa pack "modulation"

    okay so i've got 1-2 suspect cells in my yesa pack. Before sam will state that tehy are warrantable, he wants me to "modulate" them, in essence balancing the pack. his reply was this: I thought it quite interesting to get the non bad cells to discharge down to the same level as the unhealthy...
  19. BiGH

    New Lights (stolen link from Treehugger.com)

    Treehugger is one of the 4 sites i visit many times per day. today i found this post and thought it might be useful for some of you ebikers! (not to mention commemorate my first $100 of car replacement credits - (i keep a log of how much i'm saving by ebiking to various places - just passed...
  20. BiGH

    Using Packs of Different Amp hour ratings.

    Hey Endless-spheroids, Just wondering if it is possible to keep packs of different amp hours of capacity connected (and reilable) in either series or parallel. I currently have 2x 36v 12ah packs. I've got another pack on order. I was thikning about this - what would happen if my other pack...
  21. BiGH

    Australian Ebike Law

    This is a continuation of the discussion from my build thread about the legal limit in Australia... http://endless-sphere.com/forums/viewtopic.php?t=1481&postdays=0&postorder=asc&start=195
  22. BiGH

    Switchbike - a bike i'd love to convert to hub power!

    For some reason i think this is cool :) and i reckon it would be a great platform for a rear mounted hub motor. http://www.youtube.com/watch?v=8H39NiWbeOw&eurl=http%3A%2F%2Fwww%2Eengadget%2Ecom%2F2007%2F10%2F15%2Fswitchbike%2Dgoes%2Dfrom%2Dbicycle%2Dto%2Dchopper%2Din%2Dseconds%2Dflat%2F
  23. BiGH

    Custom A123 pack charging options.

    Hey all, Both me and a mate (who i got into EVs) are looking at making an a123 based pack. I was wondering what the best options for charging and ballancing are? i'm looking for a setup (can be custom) in which it just has to be plugged in. I'm looking at building a pack that is 30s8p or two...
  24. BiGH

    The Spotted Thread!

    Hey everyone, one thing we often do in car forums is to have a thread if we spot fellow car owners - ie supra owners post when they see another supra we'll leave details etc. I was thinking we could do that here - *try* to stay on topic - just post info about the bike you saw, when where and...
  25. BiGH

    Running Twin Motors

    Ok time for a bit of a discussion. would running two motors give a higher top speed than running one motor (assuming you aren't reaching the no load speed of the motors?) I'm just wondering if these assumptions are correct or not: running two (for argument's sake) pumas would: 1. increase...
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