Search results

Date Relevance Most replies

  1. K

    Definitive Tests on the Heating and Cooling of Hub Motors

    I'm thinking about cutting out a space in the side cover for a copper heat exchanger (copper conducts heat better than aluminum by 50%). I first need to measure how much space I will have - because the cassette is also mounted on this side. If there is not enough space, perhaps I will add a flat...
  2. K

    Definitive Tests on the Heating and Cooling of Hub Motors

    None of proposed here looks safe. Oil can leak on disc brake. Distilled water can mix with grease and make real mess. So I did not try anything yet. Even ferro is not 100% solution for gear motors(but it is for DC). Maybe somebody found something new here?
  3. K

    Definitive Tests on the Heating and Cooling of Hub Motors

    anobody found solution for gear motor cooling? something safe for leaks on disk brakes and corrosion inside motor? :) summer hit already and my motor today was around 96 celcius for one hour during crazy ride. 96 sounds a lot(or maybe 96 is ok?).
  4. K

    Definitive Tests on the Heating and Cooling of Hub Motors

    Yes and no. You forget that geared hubmotor has two gaps to fill. Ferrofluid may help you to transfer heat between first gap on the photo, but we still have problem because there is second gap. Transfering heat over first gap not solving problem, because you have still heat inside motor and...
  5. K

    Definitive Tests on the Heating and Cooling of Hub Motors

    Let's try to sum up the 86 pages of this thread, which is already 9 years old. :arrow: DD motors - statorade - proven efficiency and zero problems with electronics, leakage, resistance and temperature. The perfect solution - no need to look for another. Justin was pasting the temperature...
  6. K

    Definitive Tests on the Heating and Cooling of Hub Motors

    I like distilled water with an anti-corrosion additive the most. but in this thread someone wrote that raised to a very high temperature can damage hall sensors. I don't quite understand what he meant. rather, he wrote about the temperature at which water turns into a gaseous state and steam...
  7. K

    Definitive Tests on the Heating and Cooling of Hub Motors

    Read my post again. I'm writing about geared motor, not DD. Geared motor don't have magnets on shell in this place. By the way - DD motors cooling down systems are discused many times in this thread with working/great solutions. Now please let's stick to geared and let's discuss my scenario...
  8. K

    Definitive Tests on the Heating and Cooling of Hub Motors

    I am a fan of gear motors. Liquids cause a lot of problems for electronics and leaks. Air seems to be the 100% solution - at least for now. Air has its disadvantages - it absorbs heat less than liquid, but it does not cause as much trouble as liquid. The gear motor sheel acts as a heat...
Back
Top