Smoother Posted November 21, 2017 Share Posted November 21, 2017 My limited understanding of the HALL effect sensor, is it senses the position of the magnets relative to the coils. That information is then used by the control board to control the strength and duration of the energy pulses it sends, in order to achieve the desired speed and direction of rotation, called for by the gyro chip. I ask, because I'm forced to fix my KrackSong glass axle (14c) and I want to rotate the axle 90 deg. in the pedal arms for increased strength where its needed, which would put the HALL sensor at the 3 o'clock position rather than the factory 6 o'clock position Don't worry about how I'm going to accomplish the axle/arm interface (I have a cunning plan) Link to comment Share on other sites More sharing options...
meepmeepmayer Posted November 21, 2017 Share Posted November 21, 2017 I believe the just count how often a magnet goes by, not even sense where it is. So any orientation should work. Link to comment Share on other sites More sharing options...
Chriull Posted November 21, 2017 Share Posted November 21, 2017 @Smoother imho the orientation of the sensors matters - the output/voltage/resistance is proportional to the magnetic field and by this has to have a direction? But imho you meant the "relative" position along the wheels circumference by mentioning the 3 o clock versus 6 o clock position? As long as you shift all sensors by the same angle i could not imagine any prob (which does not have to mean anything ?). Best to ask our members from the firmware thread - they should have the most knowledge regarding this topic! But i cannot really follow your thought - why not leave the hall sensors where they are? I do not see any need shifting them only because you change the axle "rotational angle"? But again - involve our firmware guys to gain some real practical knowledge?! Ps,: the relative position of the hall sensors in regard to the coils along the circumference could matter?! Link to comment Share on other sites More sharing options...
andress Posted November 23, 2017 Share Posted November 23, 2017 I did flip the axle upside down when I had a crack and it worked just fine. I did it just as a temporary solution before getting new axle so the pedals woudn't scrape the motor in the mean time. It was a gamble as the axle could have broke off entirely at any time after this but it didn't before I got a new one. Link to comment Share on other sites More sharing options...
Smoother Posted November 23, 2017 Author Share Posted November 23, 2017 7 hours ago, andress said: I did flip the axle upside down when I had a crack and it worked just fine. I did it just as a temporary solution before getting new axle so the pedals woudn't scrape the motor in the mean time. It was a gamble as the axle could have broke off entirely at any time after this but it didn't before I got a new one. Thanks for that. reassurance. I don't need to take the risk you took, as I have another wheel to ride. Did you actually get a new axle, or a new motor? Link to comment Share on other sites More sharing options...
andress Posted November 23, 2017 Share Posted November 23, 2017 axle, have a look at my threads I posted about the change Link to comment Share on other sites More sharing options...
steve454 Posted November 23, 2017 Share Posted November 23, 2017 10 minutes ago, andress said: axle, have a look at my threads I posted about the change Is this the one where you borrowed an old Czech press? Link to comment Share on other sites More sharing options...
Smoother Posted November 23, 2017 Author Share Posted November 23, 2017 37 minutes ago, andress said: axle, have a look at my threads I posted about the change yes, thanks. I read through all of that. Very interesting. Well done, that was an excellent write up, great photos, and videos. I'm Sorry it hasn't returned to like-new driving. I have my motor in pieces right now. No damage to the wires, so that's something. Haven't pressed out the axle yet as I've been replacing the timing belt on my car ( turned out great btw)I have one large HALL sensor, with 5 wires; +, - ,A, B, C. I'll try very hard not to damage it. KS Poland is trying to sort out an axle for me. I'm not sure if he's ordering one from China or having one fabricated locally. I'll have to check, because if he's having one made I'd like to specify not to cut it KS style, but leave both ends round for maximum strength. I'll sort out the arms to match. You don't need those weak cut outs to make a secure connection. Link to comment Share on other sites More sharing options...
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