hjns
100 kW
Hi all,
I added some solder to the shunt in my Lyen MKII 12 FET 1445 controller as described here. I also re-calibrated the CA as described here using 9.0 and 10.0A current from my iCharger in foam-cut mode over the Ground-Phase circuit. It showed that I had to decrease the shunt value to 1.645 mOhm (instead of the 2.000 mOhm). I also programmed the controller as described in Methods^thread to 58A/145A current with block time of 3 seconds. You may remember I have a HT3525 with halls and 30S 126V lipo. When driving up a 10% hill, both motor and controller get hand-warm after 500m, and I see peaks amps over 60A (7.5kW). Outside temp is around 65 degrees Fahrenheit.
How far do you think I can push it? I do not want to start drilling holes yet... and I will add a temp sensor to both controller and motor. But for the next steps, should I first add some more solder to the shunt to change the shunt resistance to below 0.500 mOhm and re-calibrate the CA? Or should I first stick with increasing current in the programming?
Thanks!
KR,
[edit: title edited to reflect correct MOSFETs]
I added some solder to the shunt in my Lyen MKII 12 FET 1445 controller as described here. I also re-calibrated the CA as described here using 9.0 and 10.0A current from my iCharger in foam-cut mode over the Ground-Phase circuit. It showed that I had to decrease the shunt value to 1.645 mOhm (instead of the 2.000 mOhm). I also programmed the controller as described in Methods^thread to 58A/145A current with block time of 3 seconds. You may remember I have a HT3525 with halls and 30S 126V lipo. When driving up a 10% hill, both motor and controller get hand-warm after 500m, and I see peaks amps over 60A (7.5kW). Outside temp is around 65 degrees Fahrenheit.
How far do you think I can push it? I do not want to start drilling holes yet... and I will add a temp sensor to both controller and motor. But for the next steps, should I first add some more solder to the shunt to change the shunt resistance to below 0.500 mOhm and re-calibrate the CA? Or should I first stick with increasing current in the programming?
Thanks!
KR,
[edit: title edited to reflect correct MOSFETs]