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  1. Sturmey

    Need a hub motor recommendation - 36h rear cassette, 135mm OLD, 36V, 250-350W, 328rpm for 16" wheel build

    I dont have any direct experience of hub motors with split axles. My first thought is perhaps the axle ends/flats would line up without dismantling by putting a 10mm or adjustable spanner at each end and turning. But on looking at the diagram, I think the motor needs to be partly dismantled, the...
  2. Sturmey

    Need a hub motor recommendation - 36h rear cassette, 135mm OLD, 36V, 250-350W, 328rpm for 16" wheel build

    Interesting. I wonder is it possible that your motor is the type where the axle has two separate left and right section parts that are not correctly lined up, which might also explain the reason for the defect and also mean repair might be possible?
  3. Sturmey

    Need a hub motor recommendation - 36h rear cassette, 135mm OLD, 36V, 250-350W, 328rpm for 16" wheel build

    I think the 16 inch wheel needs a faster motor than the 328 rpm you specified in your title which is the norm for a 20 inch wheel e.g. 400rpm for 16 inch. I think the 328rpm rated at 36v if fitted to a 16 inch wheel would probably need to run at 48v or your bike will be slow.
  4. Sturmey

    Derailleur drop out

    If its the 'hanger' you are talking about, there are many different types so you need to get the correct match.
  5. Sturmey

    Crank removal

    I am assuming that your bike has the square taper type bottom bracket/crank. Some crank extractors come with a cap as shown below but I have seen the caps a little too large for the square hole. I always use a small m6 bolt with the head filed a little smaller. But a nail with large enough...
  6. Sturmey

    What do flashing lights on Bosch battery mean?

    Push and hold down the battery button for 10 seconds or more sometimes does some kind of reset.
  7. Sturmey

    Tonsheng TSDZ8 conversion kit.

    I think its worthwhile and seems simple enough to do a test on the torque sensor (even with original manufacturer firmware), if for no other reason than to note it for later reference. It took me 10 minutes with a luggage (20kg) scale. My te reading is 92 and tei is 104 @5Kg, 122 @ 10Kg, 143@20...
  8. Sturmey

    Tonsheng TSDZ8 conversion kit.

    I have the 1999/2000 TSDZ2 36v version with standard original manufacturers software. I have always blamed my perhaps weaker legs for finding the torque sensor unsatisfactory and my necessary use of the throttle to compensate. There is stuff on line about mechanically calibrating the torque...
  9. Sturmey

    Tongsheng Tsdz2 problem Help!

    It looks to me that your torque sensor is faulty. Incidentally, I use the throttle all the time on mine as I find the torque sensor only tiring, so I could live with it faulty.
  10. Sturmey

    Yosepower kits.

    Just check. I think you may also need a different control cable (1T4 or 1T5 ?).
  11. Sturmey

    Help! Pendleton Somerby Ebike - battery casing has disintergrated around the screws

    There is one unusual thing about the pendleton somerby ( 2017 model) and that there is some kind of two stage power arrangement with the pedal assist. When you pedal very slowly, you get lower power to the motor. It steps up to the full power when you increase your pedal rate but speed of...
  12. Sturmey

    "Gouach Infinite Battery, The Only E-Bike Battery You'll Ever Need"

    The product is (as far as I can see) a housing similar but tidier to the 'Vruzend' kit in that it relies on pressure to make the connection to the individual cells. I would not be sure how well or reliable it works. It probably needs to be fireproof! (imo)
  13. Sturmey

    Jorvick trike electrical problems (inrush?)

    My guess is that you have one parallel group of cells that has lost capacity ( or possibly very much out of balance). Its coming up ok on charge but it discharges early and this low voltage of one cell group will cause the BMS to do its job and disconnect the load. If it were my battery, I would...
  14. Sturmey

    Wheel Building Help

    sjs cycles do 14g 132mm or 134mm spokes (including nipple) for 50p each. https://www.sjscycles.co.uk/spokes/brompton-spoke-nipple-each-plain-gauge-14g-132mm/?geoc=IE https://www.sjscycles.co.uk/spokes/120-jtek-14g-stainless-plain-gauge-spokes-12-mm-brass-nipples-pack-of-6/?geoc=IE
  15. Sturmey

    Wheel Building Help

    I do that all the time when I am not changing the spoke pattern, which is single cross or 1x in your case (from recent photo). Firstly check that the original spokes were a proper fit in the first place and then measure them accuratly from the inside of the 'j' curve and the spoke end. The...
  16. Sturmey

    How Olympics Officials Try to Catch “Motor Doping”

    If you look at a sprint ending below, it all takes place in less than a minute. The final surge of power is only for a few seconds,So for a sprinter at a foreseeable sprint end stage, my guess is that he needs perhaps a few hundreds watts to supplement his muscle power (1500w?) but for only a...
  17. Sturmey

    How Olympics Officials Try to Catch “Motor Doping”

    Racers can change their bikes during a stage so I think a bike change with the extra motor power towards the end of a race stage that ends with a sprint or hill climb could be of benefit, provided they can get away with it. (On some stages of say the tour de france, all the racing really only...
  18. Sturmey

    Jorvick trike electrical problems (inrush?)

    The shower element is rated a 9 Kw (230v) normally in water but it easily works in air for a few hours at 36v at 250 w or so.. I just leave it down on the fireplace as it does get hot enough to say melt plastic.
  19. Sturmey

    Battery indicator/voltage

    Total Trip Time PS. Your display is a KT LCD3. Easy enough to get manual online.
  20. Sturmey

    Disappointed with a Pendleton e-bike

    There is a thread on the end of the spoke but your second question is important. The pendleton wheel is laced with longish 272mm spokes in a three cross (3X) pattern and this puts an extreme angle between the spoke and the rim that the nipple cant properly accommodate. So the spoke bends. This...