My understanding of all things electrical is very limited so I have a question that those far more knowledgeable may be able to answer/clarify regarding Dublo armatures.
My understanding is that they either work or they don't but do they actually degrade over time and increase in resistance resulting in the loco drawing more amps?
The reason for asking is that I recently tested an armature and the segments all gave a reading of around 7 ohms compared with the 4.5-ish that Ron Dodd achieved in his related You Tube video. On this basis I'm assuming that the greater the resistance the windings have the more power (amps) it will require in order to work and as a consequence the koco will theh run at a higher amps level.
As I say my knowledge of elecrtics is limited so am I barling up the wrong tree here perhaps?