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  1. flexy

    Interesting canoe paddle with motor..

    This paddle turned up at my work, I thought it might be of interest, or somebody might know who made it.. It has a motor in the bulbous part of the paddle, a simple thumb switch in the handle and can be connected to a car battery. The prop is a model aircraft variety and seems to have a limited...
  2. flexy

    E-max 110 headlight mystery

    I'm trying to retrofit some H3 LED bulbs, It turns out the lighting system is some sort of AC :? I tried putting a voltmeter across the bulb and I get a voltage reading of roughly 2.6V AC, there is also a buzzing when they are switched on. The dipped and main beam are different brightness...
  3. flexy

    another thermal camera smartphone addon, android too

    Only available in the US and Canada :( http://www.gizmag.com/seek-thermal/33982/
  4. flexy

    13 electric vans for sale UK £17500, that's £1350 each!

    Saw these on Ebay http://www.ebay.co.uk/itm/MODEC-ELECTRIC-VEHICLES-/111469639927?pt=UK_Commercial_Trucks&hash=item19f41bb8f7 These were used for supermarket deliveries, the vehicle manufacturer Modec has since gone bust, Some info and pictures of motor/controller here...
  5. flexy

    Charging problem, inrush current

    I am using an 900W Kingpan KP-B charger for my 72V pack, this works fine on my 240V AC domestic sockets/outlets . However when I try to plug it into the public charging points it has tripped them off a couple of times. I can only assume this is due to inrush currents either going into the...
  6. flexy

    Flir One thermal camera iphone add on

    This looks very useful....IF you have an iphone :evil: http://arstechnica.com/gadgets/2014/08/flir-one-gives-your-iphone-infrared-predator-vision/
  7. flexy

    Motor delaminating

    I was stripping my motor to replace the bearings and noticed that the outer laminations are peeling away. Can I just glue them back in place? I assume this is from when water got trapped inside and couldn't escape. I've drilled a small vent hole in the casing so any moisture can steam off when...
  8. flexy

    Vectrix Bankruptcy auction.

    Damn, this passed under my radar :x . Did anyone go to this? It would be good to know who got all the spares, and the 3 wheelers, I'm hoping Elon Musk bought the lot and will produce an awesome bike... http://www.pesco.com/servlet/SelectAuction.do?auctionId=9256&path=/servlet/AuctionInfo.do...
  9. flexy

    Running different models of charger in parallel

    I have three different chargers for 72V lifepo4, they all seem to be isolated (no continuity between input and output ). One is 10A Chinese made, one 7A Chinese made and my own homwbrew 7A version made from a pair of Meanwells. Could I run them all in parallel to get a 24A charge rate?
  10. flexy

    2 controllers to 1 motor, is it possible?

    I'm having problems with my Greentime 36fet and not being able to program it, I wondered if I could run two 18fet controllers in parallel to one 3 phase motor Then I could get the programming and power I need....
  11. flexy

    G/F BMS strange behavior

    I have a Goodrum/Fechter 24S BMS version 2.6, It works well with my 24S2P Headway pack. I tried it on my 24S5P A123 pack and it seemed to struggle to balance the pack, this was after 24hours on charge. I took a timelapse of what it was doing over 2 hours. Ab1DzZG197A It seems 4 cells...
  12. flexy

    Paragon Arduino scalable controller.

    I just saw this on the Make website, does anyone have any more information? http://makercontrols.com/
  13. flexy

    Welding plugs and sockets for high current connections

    Has anyone used these Dinse type welding plugs and sockets for pack connectors? they seem sturdy and cheaper than equivalent powerpoles. http://www.olympustechnologies.co.uk/pdfs/dinse-connectors.pdf http://www.weldingtorchparts.co.uk/items/plugs_and_sockets/cable_plug_1025.html
  14. flexy

    (6-34V Input 6A, 6-24V Output 10A, programable PSU

    I just came across this, it could be useful for building a charger 'Charge current, float voltage and bulk charging parameters can be setup via USB interface into the OPEN-UPS non volatile flash memory.'...
  15. flexy

    Could anyone recommend a controller for this 4KW hub

    I am trying to get an e-max scooter to run on 72V (they are 48V stock) I have tried it with an 18fet infineon but that got hot and soon blew the fets. I was pulling 5kw at the time according to my CA. It also cogged badly at low speed and when running at 20mph it smoothed out, but there would...
  16. flexy

    Celllog 8 aternative, any good?

    Just came across this http://www.ebay.co.uk/itm/170803106679?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 Seems much cheaper than a celllog.
  17. flexy

    A123 cell has a puncture,is it usable?

    I just received my A123 cells from Victpower, I found one with a cut in the bottom. It also had some droplets of liquid on it, I'm not sure if this came out of the cell, it looks like air has got into the pouch so it doesn't feel as rigid as the others (I guess they are vacuum sealed). the cell...
  18. flexy

    How do I get a meanwell to run off 72VDC?

    I need to step my 72V pack voltage down to 48V, to run the lights and switchgear on my E-max 110s scooter see http://www.endless-sphere.com/forums/viewtopic.php?f=10&t=38617. I bought a 48V 2A meanwell supply for this purpose, but it won't show any signs of life when fed from my pack (79V)...
  19. flexy

    90V - 50V DC-DC converter needed

    I need a 90V - 50V DC\DC converter for my scooter upgrade, http://endless-sphere.com/forums/viewtopic.php?f=10&t=38617 I need to power the existing electrics from a 48V+ supply to keep them running as stock, the new Lifepo4 pack will be putting out up to 90V. The existing voltage converter...
  20. flexy

    E-max 110s lifepo4 upgrade

    [Edit:] 2/6/2014 For anyone looking to do this I would advise staying with the 48V setup and getting the controller reprogrammed, If you really want extra speed go for a 3.5 KW/h lithium pack to lighten the bike and over volt to 84V or more with a new controller (Adaptto Max-E, Sabvoton...
  21. flexy

    E-max 4kW hub motor

    I have just obtained an E-max 110s scooter with a 4000W 48V Motor I was wondering if this motor could be run at 72V , I'm planning a Lithium upgrade from the stock SLA's What would the best current rating of the controller? My current 2KW scooter with 72v LiFePo4 , can draw up to 160 Amps...
  22. flexy

    Etracer coming to market

    These look pretty cool, I'm not sure about driving one through city traffic though; http://inhabitat.com/zippy-peraves-monotracer-electric-mte-150-motorbike-hits-the-market-with-350-mpge/ http://www.monotracer.ch/index.php?option=com_content&view=article&id=54&Itemid=135&lang=de
  23. flexy

    Oil cooling for hub motors

    I read about an electric scooter (ZEV I think) where they had oil in the hub motor to help dissipate heat , has anyone tried this with their motors? I guess if the cover plate is well enough sealed you can fill it up to just below the axle, once the motor is spinning the oil centrifuges to the...
  24. flexy

    New Lithium battery production technique

    I heard this today http://www.bbc.co.uk/programmes/b013qzps#synopsis They describe a new way of making lipo that sounds safer and cheaper, sounds promising, starts at 8.00 minutes into the program.
  25. flexy

    New capacitors on ecrazyman 18fet

    I have just received a new board kit from Ecrazyman, I am transferring fets and cables from an older dud board to the new one. I noticed that the layout of the capacitors has altered. The upper board is the new one. C4C1 is smaller C03 is now populated C2 is not populated but he has...
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