[Dr_C2]

Re track voltage, 
I wonder if fitting the lane changers with a buck boost converter would allow 7.5v on the rails without needing a separate DC supply to all the LCs. I guess it depends on the size and complexity of the track layout. Just spitballing here :)

Thanks Drifter2,

Your suggestions add some good options.
I did manage to find some very small buck converters which down-convert to 7.5V at 3A so will try these first - ideally I would like to keep the track at 12V SSD - but if that doesn’t work out will try your kind suggestions.

Also, will update on the application of your ‘diode-capacitor’ mod to the sensored ESCs- fingers crossed.

Many thanks,

c