*** In the interest of accuracy... Need for adjustment of CV1 has nothing at all to do with decoder quality.
It simply means the design decision settled on a different start point as the default - because of the current draw etc of the core target locos. With CV1, what is perfect for one loco is not necessarily so for the next etc. The TCS is designed around US locos which have heavier start currents/voltages so its "step 1" is therefore set higher than a decoder set for other locos, especially newer EU or UK models.
Your loco being an older mechanism is simply more suited to the settings of the TCS.
QUOTE (SRman @ 4 Mar 2020, 09:14)
<{POST_SNAPBACK}>With the Gaugemaster decoder, I had to put a value of 15 in CV2 to get the loco moving on speed step 1. There was no such problem with the TCS decoder, and the loco inches along on speed step 1 with no extra tweaking needed.
regards, Richard