John in CR said:
A setup with a 140kph no-load speed that only goes 90kph with a load is running at high system stress, because the gearing is too steep. If you decrease the wheel size, not only will you increase acceleration, but you will also get a higher top speed.
i know all about the un-efficiency of this system, this is why i use li-po's, my continues current (at 100% delta mode and full throttle is 75-90a, i take about 1ah per k'm
the ideal thing to have is something like a 3t v3 mxus with drilled caps, or a 3kw QS, but i live in Israel and its very hard to get those (illegal) motors here... this one cost me about 600$ which is crazy for a motor like this... but what can you do...
btw, my other bike that i was showing in the picture in the end of the video currently has a 13x5 1500w leafmotor, and its going at 80kmh in star and 105kmh in delta. so to ditch the delta i ordered myself a 16x4 stator for it, gonna pick it up from China when im visiting in May, and the bike will go probably about 90kmh with no delta, and if i want to i can allways make the switch.... maybe when this bike will have lipo's as well...
Doctorbass said:
Maybe time to balance your wheel :lol:
Also NEVER forget to slow down BEFORE going back to STAR mode!!!!! otherwise the BEMF of the motor will blow your mosfet.
Doc
good to hear from the great Delta\wye Guru
the most imprtant reason i have to finish my other bike is so i could put this one aside for a few weeks and fix all the small (and big) issues i have...
right now i have a torn temp wire for the motor which sometimes cuts off the temp guage, my freewheel starts to make noises and needs to be replaced... and to fix this god damn wheel... i suppose my breaks need bleeding too.... so lots to do in the next month
oh and i once fried an 18fet infineon when i accidently switched to delta without letting go of the throttle... im way more careful since lol
btw i have a friend which i installed a delta\wye switch for him, and i made it with only 1 3pdt relay for it, so he can switch when he's at full throttle and its switching smooth! too bad i can't find a 3pdt 150a relay...