Following my last post, I am going to continue to show you the EMU Toei 10-000 series, which will be retired soon.
Set 270 of the EMU Toei (the Transportation Bureau of the Tokyo Metropolitan Government) 10-000 series belongs to the 8th batch group of the 10-000 series. Its technical specification is the same as the other 10-000 series trains, but the design of the train bodies is different from that of the other ones. For instance, the 8th batch group has beads on the side of the stainless steel bodies; while the other 10-000 series has corrugations. The 8th batch group has a blue colored thin stripe on the front; while the other 10-000 series trains don't have it. Trainspotters like me perceive and enjoy these kinds of fine differences between the two groups of trains. You may be one of those people.
The 8th batch trains, including set 270, were launched in 1997. A total of 2 sets, 16 units have been built by Alna Kohki. This group of trains is known as the last model built with an armature chopper electric control system in Japan. As you may know, the armature chopper is an excellent electric control system, but it was high cost, and sometimes caused inductive interference, so that the trains with the armature chopper electric control system have been retired gradually.
Sayonara (good-bye) and arigato (thank you), the Toei 10-000 series, Japan's last model built with an armature chopper control system.
