YOLO wrote:Did anyone figure out the make and model of the propulsion engine? Sounds very similar to the WMATA 1000 trains.
It's a Bombardier MITRAC system as the Bombardier site has confirmed this in the past. BART likely has a variant of the MITRAC DR1200 series motor combined with a variant of the MITRAC TC-1410 or TC-1420 IGBT inverter module. They definitely use the MITRAC TCMS for the monitoring system. Now what BART has is not the only system that has a similar sound. Usually most of the propulsion motors/inverters rated at 1000VDC or above will have the higher pitched whine.
Examples of other Bombardier systems sounding similar are below:
Shenzhen Metro (1500VDC):
https://www.youtube.com/watch?v=O3ef_VAhzzE" onclick="window.open(this.href);return false;
Guangzhou Metro (1500VDC):
https://www.youtube.com/watch?v=ki78NHPcT4U&t=1s" onclick="window.open(this.href);return false;
Rome Metro (1500VDC):
https://www.youtube.com/watch?v=IdEockO0mb8" onclick="window.open(this.href);return false;
Madrid Metro (1500VDC):
https://www.youtube.com/watch?v=JVnidJwDC-E" onclick="window.open(this.href);return false;
BART (1000VDC):
https://www.youtube.com/watch?v=EE5OaurgBeY" onclick="window.open(this.href);return false;
The one thing I noticed between all of them is that BART is slightly lower in pitch running 1000 volts of current compared to the other systems running 1500 volts.
Gotta love Alstom. Every year on opening day of hunting season, it is a paid holiday!
