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  1. gwhy!1

    play save guys ..

    Just thought I would post a picture of the aftermath of my mates bike, as a reminder to look after your battery's !! this was totally his own fault and was very lucky not to loose this shop/workshop..
  2. gwhy!1

    watt meter all functions (diy)

    I thought I would start a thread for anyone interested in adding to a generic watt meter project based around the arduino nano. This is a follow on from this thread http://endless-sphere.com/forums/viewtopic.php?f=2&t=61004 I have added a screen to the vero layout in the other thread I will...
  3. gwhy!1

    Throttle Current/phase power control

    Arduino code for throttle interface that allows current and phase limiting to be pre set. Original code was by Hornet Dave for use with RC controllers : original thread is here http://endless-sphere.com/forums/viewtopic.php?f=30&t=33947 EDIT: A link to my watt/volt meter that can also use...
  4. gwhy!1

    E-Bike Festival UK 2014

    Electric Bike Festival Sunday – Bristol 22 June 2014 http://www.electricbikes.org.uk/bristol-electric-bike-festival-2014/ Anyone going from here ?
  5. gwhy!1

    219 sprockets

    I am just putting out some feelers to get some feed back about a couple of things that may be of interest to see if there will be a potential market for rear wheel sprocket carriers for #219 ( standard kart sprockets ) and also front 10t to 18t #219 sprockets 3/4in bore ( with grub screws and...
  6. gwhy!1

    Phase current - discussion

    Is the phase current rating on a controller for each phase or the sum of the 3 phases ?? . just thought I would put this out there as some of the math that i have been playing around with dont quite add up ( and it prob my mistake ). Has any one actually measured a controllers current on one of...
  7. gwhy!1

    bms information needed please

    I am trying to get to grips with bms's with a balance option. I bought a cheap one from ebay to play with and now i am a little confused and now wondering if it is faulty. Without any of the balance taps connected the bms will still pass current ( charger to battery ) , now I would have thought...
  8. gwhy!1

    Inline fuse with anti spark

    Thought I would quickly post this up as it may be of use to some one. The fuse in side the fuse holder can be anything upto around 200A the resistor value is a 180ohms 3w. the link could be a pullable link so it will cut all power to the controller in a emergency and it will shunt the bike power...
  9. gwhy!1

    Small e-bike vid

    Julien Dupont Rides E-bicycle :D edmH0Zx57JY 5_h-WxZgMfM
  10. gwhy!1

    sunwin controllers any info?

    Do anybody know/have any information about these controllers: http://isunwin.en.alibaba.com/product/554381398-210142989/48V_500W_Electric_Bicycle_Brushless_Speed_Controller_For_E_bike_Motor_Scooterr_Electric_Bike_Scooters.html Anybody know if they can drive upto 70,000 ERPM Thanks.
  11. gwhy!1

    2 controllers with 1 motor.. advice please..

    I am looking for possible problems ( hoping there will not be any :mrgreen: ) that may be encountered if I were to use 2 sensored e-bike controllers driving just 1 sensored motor, I am just thinking paralleling all needed connections ( hall and phase ). I want to try this and I don't think...
  12. gwhy!1

    question about phase current

    In my quest to find a good way to control a lot of power from a small outrunner when its geared for such a slow riding speed, would reducing the phase current setting make it a bit less of a nightmare to have that very slow precise control without being to twitchy but without loosing the torque...
  13. gwhy!1

    dual motors,dual controllers

    dual motors,dual controllers: If you were using 2 or more motors from 2 or more controllers driving a common jackshaft would there be any advantage having over running sprag bearings on each of the motors :?: would this help if there are inconsistencies in motor/controller speeds, my gut...
  14. gwhy!1

    warning!! just got a new lipo from HK

    Just thought I will put this out there as it could have been a disaster. I just recieved a new set of 4 zippy lipo's from HK and one of the battery's has been wired wrong ( red should be black and black should be red ) . Has this ever happened to anyone else ?.
  15. gwhy!1

    cheap controller ??

    do anyone know anything about these controllers ? they seem to be a good price.. http://stores.ebay.co.uk/VirtualVillage-AU-TOP1/_i.html?_nkw=Brushless+Speed+Controller&submit=Search&_sid=241440152
  16. gwhy!1

    its now a e-motorcycle

    It was going to be a ped/elec hybid but now I have done away with the ped side of things so I'm moving it to here from here http://endless-sphere.com/forums/viewtopic.php?f=6&t=25703.
  17. gwhy!1

    Teaser Speed Controller

    This is just a little teaser of something I have been working . This project is to try and make a truly up-scaleable controller just by stacking the power boards. I have made a much smaller version of this and it works a treat so now it was time to go big and share :D .
  18. gwhy!1

    Whats quiter -RC/Hub

    Ok I done this just out of self curiosity but I thought I would post these figures Just to start a new topic :mrgreen: I downloaded a sound level meter app for my phone and I was board so I tested the hub motor, RC motor through a gear reduction ( no belt ) with grease on the gears and also...
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