|Specifications @ 156 V Input|
|Peak/Maximum||54.57||280 rms||12,000||57.66 @ |
55 Ft-Lbs peak is 75 Newton-meters. The controller is programmed for 100 Newton-Meters.
I'm guessing I should probably back off the peak wattage to 43,000 as listed in the chart unless I want to severely harm the life of the motor.
The original Porsche 914 2.0L engine had about 90 peak HP so this is definitely less. It looksl like I'll have to shift more often to balance the motor torque with my desired speed. The regenerative braking makes shifting really hard, so I'll probably have to utilize the regen-disable switch more often.
I also think I figured out what the high-pitched squeal/scraping noise was. The controller puts out a 10Khz PWM signal to modulate the three AC waveforms. I hear this squeal during acceleration and regeneration, but if I let the motor spin freely by putting the accelerator in the middle, there's no squealing. The squealing never changes frequency either. I didn't expect the motor to be that noisy... Live and learn.
The last big issue I probably have with the car is that the flywheel is probably out of balance. When the motor hits about 4500 rpm, the whole car starts vibrating rather nastily. This means I'll probably have to take the transmission off again and have the flywheel balanced, or re-turned by someone before general use. Urg.
I sure hope people don't have to put up with my mistakes on their own 914 AC conversions!