India is running non-well doublestacks under catenary at mainline speed. To be clear, their double stacks aren't even the well cars we use, they're standard height flatcars, with two containers stacked on top, running under 25kV catenary. https://www.youtube.com/watch?v=zmNbqGp6KXU This video here looks to be 40-50mph and sources I can find say they'll be running up to 62mph (100km). I admit, they are using 5'6" broad gauge and not standard gauge, but since we use well cars, I imagine the reduced height needed for clearance over here would make up for any reduced stability. But given this, I don't see why a passenger unit couldn't run under double stack-clearance catenary at shared speeds (up to 80mph), with lower catenary on passenger-only higher speed portions. Any at-grade crossings (like I'm sure you'd have in VA and NC) would be slower speed anyways.
mcgrath618 wrote: ↑Wed Jun 08, 2022 8:13 am CSX dealt with catenary just fine on the Trenton Line between West Trenton and Bethayres. Even was good for double stacks. No reason the wire has to be constant tension/high speed. Just build it so that you can eventually convert it to constant tension.MCG: NO-CSX did NOT deal with the SEPTA catenary on the West Trenton Line between Neshaminy Falls
and West Trenton...The replaced original RDG compound catenary would expand and sag in warmer weather
enough that CSX sought for and got the separation of the two railroads on the northern end of the WT Line...
Building new catenary as constant tension from the start is the PROPER way to electrify with overhead wire...
(Off the NC topic but relevant to the catenary discussion...) MACTRAXX