Dirty track? Dirty wheels on your locomotive? MAYBE NOT. You may not have consistent power around your track. Installing feeder wires will eliminate a lot of the guess work and create a much smoother operation of your locomotives.
Thank you for this sir. I retired last year, and have wanted to get into model railroading since I was a young boy...so recently I started looking through guides, watching a lot of youtube videos, etc., and this is the first time I have seen anyone mention the need for the feeder wires. As a beginner in this hobby I probably would have been banging my head against a wall trying to understand why my locomotives were slowing as they got further away from the main power. So thank you again. I've liked and subscribed to your channel, and will be looking through all your guides, as I think you have a lot of information available here.