GCinDC said:
dbaker's wheel had a temp sensor in there, but seems to be frozen at 164deg - i must have cooked it just while testing the bike in the alley before hooking up temp sensor display...
user error, as usual.
the temp sensor is fine - it just flashes blue like it's going to explode and reads 164deg when the connector is plugged in the wrong way..
it was very interesting to watch the temperature this morning, on a very casual ride, but with a mother hog of a wheel - so ironic after
discussing ebike efficiency with justin..
started cold at 16C - 60F and over 20 min (stop and start) commute, steadily, and linearly went up to 104C (219F), seemed to stabilize there and being cooled via holes while going fast but drawing only 10-20A, but then on doing stops and starts on incline, continued to rise steadily until the buzzer went off at 125C (257F). i unplugged at that point to avoid getting arrested (considering spare lipo and wires dangling in my jacket pocket and profusion of loose wires on handlebars).
after parking, i checked again. it rose to 135C (275C) before slowing going down. the motor emitted a familiar aroma, and instantly noticable through side cover holes..
initial conclusion:
- now i have vision where once i was blind. how great is that!?
- i can't imagine this motorcycle wheel ever being sustainable, except for very short rides
, at these power levels, but note that there was too much traffic to frequently get up to and stay at speed.
again, remember that this is still w/ 9x7...
i've finished upgrading and testing the hs3540 on the bench. the hs3540 only has ONE temp sensor wire coming out of motor AND the display doesn't require additional power source (after re-tapping halls near controller) !
this will only work w/ sensored controller... inside the motor, the sensor has three wires, and is spliceed to the positive and ground wires of the 4.5V halls, with only the sensor wire coming out.. it's also nice that the display only comes on when the bike is on... crappy pics and vid to come.