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  1. ipub

    Sun-Thing28 Ebike Kit Build

    Thanks man. Painful process so far! The battery charger it came with turns itself off after it's charged and then every 30 seconds or so it'll turn back on for short while, I'm assuming that's for balancing? I'm fairly sure the battery is full but do you think I should leave it charging longer?
  2. ipub

    Sun-Thing28 Ebike Kit Build

    Well, I remember wiring the power cables the wrong way round into the male and female kettle lead connectors (the type you wire yourself) and plugged them in and there was a definite pop. I think I have damaged something though.. I'm not sure what. I finished wiring it up into the bag and went...
  3. ipub

    Sun-Thing28 Ebike Kit Build

    That's the very same. There must be some protection in there then as it worked fine afterwards .. despite the crack pop noise that made me jump out of my skin. Can't have done it any good though.. Maybe that's why I'm seeing a reduction in performance?
  4. ipub

    Sun-Thing28 Ebike Kit Build

    Quick update. Things are working much more smoothly but I still don't trust the chinese wiring and plan to replace it asap. Everything is made to what I'd call an adequate standard but the wiring, particularly the spade connectors, are pretty poor and I've seen various performance issues as a...
  5. ipub

    Sun-Thing28 Ebike Kit Build

    Yeah I am aware of the legal limits. I'm not doing anything crazy on it and my commute takes me (mostly) over farmland roads with public rights of way. At the moment I'm still having issues with power cutting off if I put more than 30% throttle. I'm not sure what would cause that but I'm...
  6. ipub

    Sun-Thing28 Ebike Kit Build

    Ok well, this is embarrassing. I was taking the motor out of the bike ready to pull it to bits. As I disconnected it from the controller I noticed the cheap chinese connectors in one of the "molex" style plugs (pictured on the right) had pins made of very flimsy metal, when I initially...
  7. ipub

    Sun-Thing28 Ebike Kit Build

    Mm yes it has been a bit of a slog but I'm on my own and have no experience of bikes or electric motors so it's been a fun learning curve. The motor does turn, I can actually ride the bike, it judders a little violently at low "revs" and then power eventually cuts out and I'm dead in the water...
  8. ipub

    Sun-Thing28 Ebike Kit Build

    This thread is basically me talking to myself. Hehe Whilst I wait to take the motor apart, is this normal? Connected up for about twenty minutes and now just does... This aPRI2yG9pMs
  9. ipub

    Sun-Thing28 Ebike Kit Build

    Been researching, this sounds like the problem I'm having. http://goldenmotor.com/SMF/index.php?topic=3456.0 When I first connected up the battery I accidentally reversed the polarity because I was a tired and impatient idiot (note the plaster / bandaid in the video) It made a slight pop and I...
  10. ipub

    Sun-Thing28 Ebike Kit Build

    Hooked it all up. God awful noise from the horn. pi6MqpGtG6s God awful noise coming from the hub. Is this normal? Have I bought a bad motor or mounted it wrong? bHYa49X1qA4 If I pedal without power, there is no noise. I've removed the brakes and tied back all the loose cables, nothing is...
  11. ipub

    Sun-Thing28 Ebike Kit Build

    Finally feel like I'm making progress! I have very little idea on how to engineer things and pretty much all of my friends think this is hilarious but I am giving it a go.The battery was way too wide on arrival, about 160mm. I've split the pack and now it's narrower than the controller which is...
  12. ipub

    Sun-Thing28 Ebike Kit Build

    Received a wholesale pack of 10 sets of clarkes vbrake pads today, only £10 so even if they only last a year, I'm happy with that. What may interest some of you, particulary any Brits, is the triangle frame bag I'm going for. I saw the Falcon EV bag but for me it wasn't wide enough and also a...
  13. ipub

    Sun-Thing28 Ebike Kit Build

    I will check the voltage drop when I'm ready to hook it all up. If I have to change the cable between the packs, should I be doing the same to the cable to the kettle plug? This is the cable that came with the battery so I assumed this would be good enough. The controller has no values on it so...
  14. ipub

    Sun-Thing28 Ebike Kit Build

    I see what you're saying. I wasn't sure about cable thickness, I just used what came with it so thought that would be enough. I think it's about 6mm? Does this mean I need to replace the cables to the kettle lead plug ? As for the sensor wires, I haven't moved them, they all connect to the...
  15. ipub

    Sun-Thing28 Ebike Kit Build

    Incremental update. I've cut the pack in half (more or less) with a bit of a gap on one half for the bms. The kettle lead plug socket was part of an extension. I found this extension made by wrapping two wires together with electrical tape rather than solder. I figured this probably wasnt...
  16. ipub

    Cheap head light

    http://www.amazon.co.uk/Bicycle-Headlight-Headlamp-Cycling-adapter/dp/B007H9RBZO/ref=sr_1_3?ie=UTF8&qid=1383083894&sr=8-3&keywords=1200+lumen+bike+light I have two of these on my bike. Very bright. You only really need one for the road but I like to cycle along a dark canal path.. This is mine...
  17. ipub

    Sun-Thing28 Ebike Kit Build

    well, I gave up and had a new double wall rim fitted which goes with the two tone of the motor : https://lh5.googleusercontent.com/8rrh8c9r501RySgRKlHK_k0tfonJIR5qhBynr-I50mc=w338-h597-no I've ordered two schwalbe marathon tyres. I'm no expert but they seem to be recommended and I'd rather not...
  18. ipub

    Sun-Thing28 Ebike Kit Build

    I spent three hours (my first time) truing the single wall rim it came with to find that whilst it turned ok, it's buckled all over the place and is of such poor quality I'd be amazed if it lasts over any bump. This is the risk buying from a man in china. I've not mentioned it to sunthing28 as I...
  19. ipub

    Sun-Thing28 Ebike Kit Build

    Definitely doesn't fit unfortunately so for now I am stuck with the cassette. Literally a couple of millimeters too big. I've given up with that for now and spent the last couple of nights truing the wheel as it arrived buckled and bent. I'm not sure what I expected but I didn't expect any of...
  20. ipub

    Lite Cars UK

    Just stumbled on this after looking into commuter cars. http://www.litecars.co.uk/lite-ev.php The website is terrible but the concept looks interesting. Anybody know who they are ?
  21. ipub

    Sun-Thing28 Ebike Kit Build

    I think this freewheel might come off with a shimano tool but that doesn't fit over the axle. Is there a way of taking that off as it doesn't seem obvious to me. I am a noob but I'm trying to learn!
  22. ipub

    Sun-Thing28 Ebike Kit Build

    That's what I'm using, doesn't seem to grip into the hub. I'm just doing it wrong? This is my tool set, bottom right I think https://lh5.googleusercontent.com/-zTYJ_ee_4b8/UgPUO4tM8EI/AAAAAAAAEhs/Rro8wfF62GI/w944-h532-no/IMAG0655.jpg
  23. ipub

    Sun-Thing28 Ebike Kit Build

    Can anybody tell me how I take the freewheel off? None of my tools seem to get any purchase on the hub. :roll: Wasn't quite expecting to fail at step one.
  24. ipub

    Sun-Thing28 Ebike Kit Build

    Thanks guys. :) As much as I've read in the last year on this forum I still feel like a complete noob. I'll get started once I receive the battery in the next few days. It's taken 57 to receive the hub :shock: Suspect the boat was powered by steam. Motor is a rear hub from this kit ...
  25. ipub

    Sun-Thing28 Ebike Kit Build

    lo, I am going to build a simple commuter bike and decided that I may as well try an all in one kit as a first entry into the world of ebiking. I've ordered and just taken receipt of an ebay seller in china called sun-thing28 who I've seen various reviews about. Afaik he is just an individual...
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