What's your quickest e-bike 0-50kmh time?

[oldhaq]

time (no pedaling)=
time (with pedaling)=
motor=
controller type/settings/Wmax=
battery=
driven tyre size=
weight bike/total=

Links to similar threads;
0-40kmh: viewtopic.php?f=5&t=20486
0-60kmh: viewtopic.php?f=5&t=20488
0-80kmh: viewtopic.php?f=5&t=20489
0-100kmh: viewtopic.php?f=5&t=20490

[gge5]

Not a bicycle, but a maxi scooter. It was originally an XM-3500Li, but now it's more of a 6000+...

Time (No pedals):~3.5 seconds
Motor: Kelly Controller 4500W 13" brushless hub motor, high speed version (~17.5 Kv). I'm abusing it.
Controller: Kelly Controller KEB-72801X 350A, 50% Battery current, 75% Motor Current, ~12.6 kW max with current settings
Battery: Thundersky LFP40AHA - 40Ah, 24 in series for 76.8V nominal
Tyre size: 13" X 4" CST. I think the diameter is around 17 inches / 43 cm
Bike weight: Bike + rider is ~450 lbs / 200 KG