https://dfarq.homeip.net/train-runs-better-backward-than-forward/?utm_source=rss&utm_medium=rss&utm_campaign=train-runs-better-backward-than-forward David L. Farquhar on technology old and new, computer security, and more Mon, 06 Jul 2020 22:10:52 +0000 hourly 1 https://dfarq.homeip.net/train-runs-better-backward-than-forward/#comment-55459 Mon, 06 Jul 2020 22:10:52 +0000 https://dfarq.homeip.net/?p=23141#comment-55459 The main reason to replace the brushes because most people can’t remember when they were done if they wear down to where the wire touches the commutator it causes a lot of damage preventive maintenance is cheap

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