Recent content by Tuc-tuc

  1. Tuc-tuc

    IGH’s (Internally Geared Hub’s) - Sturmey Archer, Shimano, Enviolo, Kindernay, Rohloff

    About the gear hubs with mid-drive ebikes: I always lubricate the hubs with an oil sump filled with gear oil containing molybdenum: https://www.molyslip.co.uk/2001g/ (The shell of hub contains permanently about 3 cm³ of oil). Total weight with driver, bicycle and luggage = approx. 120 kg. Dual...
  2. Tuc-tuc

    What is wrong with this BMS

    Yes, I confirm: put a short charge inpulse to the relevant input. one second duration is enough. The BMS will work afterwards.
  3. Tuc-tuc

    Measuring airflow to optimize cooling of hub motor

    One other solution to determine the air flow could be the hot-wire anemometer: A thin wire, made from platinum or nickel or something else is heated up with constant current, and the voltage drop is a funktion of the temperature. And, in our case, the temperature is dependig on the air flow...
  4. Tuc-tuc

    Measuring airflow to optimize cooling of hub motor

    I would try to solve this task with system like a pitot tube: https://en.wikipedia.org/wiki/Pitot_tube You can buy such modules here, for example...
  5. Tuc-tuc

    Specific heat absorption capacity of disc brakes

    Hello everyone I was confronted with the same problem: too little heat capacity of disc brakes. My solution is to increase the surface area. Here a comparison of the pictures of an overheated brake disc and a new disc with additional cooling surfaces: The material must not contain nickel...
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