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  1. wurly

    bottom bracket help

    Quick question. is the chainwheel side usually a left hand thread? I thought i'd ask first before increasing force. Bike is late 90's GT
  2. wurly

    Broke my motor lead - new motor (and wheel build) or is it replaceable ?

    Where in Devon are you Alex? I have rebuilt a BPM that had a broken shaft. The phase wires will need joining to the windings and lacing/glueing inplace. You will have to pull the stator free of the magnets. Not difficult, but you have to beware of the forces involved. Does the motor have hall...
  3. wurly

    Speedict Support

    Here you go 10 x 3-Pin Servo Terminal Plug Extension Socket for RC Car, Helicopter, Plane | eBay
  4. wurly

    New Light runs direct from battery.

    Yes, they have a driver to control the LEDs, but you can still reduce the intensity by a series resistor ( i read on ES someone suggested they were not as bright on a low voltage). I've settled on a 2kohm wirewounds. I think they are rated at 7W each, they get a bit warm. If i'd gone for a 1K, i...
  5. wurly

    New Light runs direct from battery.

    My 'connect direct to battery light' turned up today.......and it was white one, and not blue thankfully:0) The light is typical chinese stuff with a poor fixing from the light to the bracket. There is a grub screw thats tightens down on the main body so you can adjust it..sort of. The three...
  6. wurly

    Wheel building

    When i ordered 72 191mm 13g spokes from china (at the time it was the only place i could get them) i didn't realise the wheel required dishing so much, one wheel laced up ok but the other had a differnet rim where i was struggling to engage the spokes, it was my only option. It's seems safe...
  7. wurly

    Wheel building

    One question i have with regard to 'dishing' the wheel. Is there any reason why you can't have the spokes entering the hub holes on the disc brake side and exiting the hub on the freewheel side therefore making the rim more centered without resorting to different length spokes? some bikes need a...
  8. wurly

    Enclosing gear cabling

    I think they're designed like that to reduce movement that you would see with a full length outer cable, therefore a more solid feel to the brakes and better selection for gears. A good idea covering them though. I might have to do that on mine.
  9. wurly

    Loving front hub drive in the snow.

    Interesting ride this morning. I took my electric folder figuring i had less distance to fall should i come off and hit the deck. Bad choice... There is a definately types of snow. I encountered the wet slushy type that turned instantly to ice when compressed. The combination of this and my...
  10. wurly

    Found myself answering the same old questions.

    I get this all the time from people who work in the aircraft industry, the stupidity is frightening isn't it?
  11. wurly

    Loving front hub drive in the snow.

    We are having a load of snow right now, getting heavier everytime i look out of the window. It could be fun on the bike tomorrow morning, or maybe i'll chicken out and walk. I thought about making some snow tyres last week weekend with nuts and bolts through the tread, but i thought the snow...
  12. wurly

    Torque arm challenges

    Can you turn the slotted bit around and fix it without the extension part of the torque arm? This is how i fitted my torque arm to my Marin bike. I just drilled a hole in the frame and tapped it for 5mm.
  13. wurly

    Tongxin motor bearing longevity

    I just had another thought about the lack of freewheeling ability. It might be the two threaded nuts tight on the inner part of the sealed bearings. When the wheel nuts are tighened to keep the wheel in place, those nuts can be forced inwards too much causing pressure on the sealed bearings...
  14. wurly

    Tongxin motor bearing longevity

    The one way clutches in these things have a habit of snatching the ball rollers and breaking the surrounding metal, which is very thin. There is a problem with the clutch which could be broken bits jamming something or maybe corrosion. It's not difficult to inspect it, if, you can get the...
  15. wurly

    New Light runs direct from battery.

    I have a P7 led torch and that draws 2A, i wouldn't be surprised if the T6 was more than 2.5A, nevertheless if the dcdc converter blows then it short circuits to the input voltage and that is not good (as you found out). If i get a blue one i'll add a 555 timer circuit and have some fun :0)
  16. wurly

    New Light runs direct from battery.

    Thats why i'm reluctant to use regulators unless i am sure there is good protection circuitry to prevent them taking out the very gadget they were powering. Not found one that i consider ok for powering my phone from a 54V battery yet. Which voltage regulator were you using benjy so we know...
  17. wurly

    Unable to switch off Bearprint battery problem.

    I'm not too far from you Barry. If Dave sends you the switch, i can wire it in for you. Can you get the bike or battery to Yeovil?
  18. wurly

    New Light runs direct from battery.

    Just the job. I'm getting tired of charging torch batteries everyweekend. I'm guessing it's a got a driver circuit to enable the thing to run up to 80V input? I'm getting one....
  19. wurly

    Overvolting - as easy as it sounds?

    I was forgetting, we had a discussion here about the differences to the ku controllers including the link for changing between 36-48v. http://www.pedelecs.co.uk/forum/electric-bicycles/13365-problem-ku123-controller.html The boost button is a good idea but it would involve using a heavy relay...
  20. wurly

    Overvolting - as easy as it sounds?

    There should be another plug with three wires (three speed switch). One will be black, the others will be blue and green (i think). What Dave is suggesting is link a wire from the black(gnd) to the other colours. With the wheel off the ground you will hear the hub either going faster or slower...