Also I was just wondering if there's ever a possibility that DTG will allow other trains to have the spark added to them. I've been dying to see to spark added to the M3A, and M7A aside from the dreaded Lirr ones as well, but would be cool to see. Other trains I had in mind that would be nice to see have spark is the Class 377's the Class 313's (Southern ones) the 1972 tube stock should have definitely had the spark, not sure why it didn't but yeah, it was just be nice to add that to the other trains through out TSW that didn't get it yet.
Since those are legacy content, it is unlikely they will get sparks since it's an individual change rather than a core change. Ohle routes do have sparks.
If ya lucky enough to see it. I've spent hours on the ECML route including many in the rain and I think I've only see seen sparks from the Azuma on a couple of occasions and I'm still not 100% sure if I was just seeing things!
I presume he were referring to arcing in which case that's a very regular occurrence. The section of line where I live is an absolute gem for seeing sparks in the winter when the weather is frosty/snowy, though outside those conditions very unlikely to see them. Actually even in those conditions they are by no means regular.