Testing. Specifically, a longer-than-expected fine tuning and integration of the various First Hill Streetcar systems in order to have all six cars pass the final tests needed to start taking passengers. The most recent setbacks were highlighted last week by Seattle Department of Transportation director Scott Kubly.
Adjusting and testing the streetcar software to ensure an optimal blending of the two braking systems is one of the latest issues getting attention, according to SDOT’s Ethan Melone. The problem is jerking decelerations and stops that occur as a result of the dynamic brakes, which generate electricity back into the system, and friction brakes not working in harmony.
Unlike the streetcar’s propulsion system (which also caused delays), the dual braking system is not new. Melone said the longer-than-expected testing has been a surprise to both SDOT and to Inekon.
“It’s not really a new hold up. It’s just been this process of getting all the vehicles tested.”
Several component manufacturers are now in Seattle working with Inekon, the lead manufacturer, and Pacifica Marine to iron out the kinks, Melone tells CHS.
SDOT is also waiting for two streetcars to complete the “acceptance testing” phase. That requires up to two weeks of preparation and one to two days of track testing, Melone said. Once that’s finished, the cars will still have to go through another round of testing that will require running the 2.5-mile Capitol Hill to Pioneer Square route multiple times (around 300 miles) during normal operating hours.
“It’s not really a new hold up,” Melone said. “It’s just been this process of getting all the vehicles tested.” Continue reading