loco is very smooth an freely, no problem on this.Yes, there is not much gear reduction / torque multiplication. I'd definitely add the 2nd motor to reduce the strain on the drivetrain.
How much does the completed model weigh? Also I did not notice any ball bearings in any of the axles, so friction could be a factor.
Do you intend to pull cars with it, or is it more of a display model?
Again, please do not let any of these comments take away from the beautiful job you have done.
Greg - 36
I want to pull one or max two vagons.
loco it weight 1600 grams tender 1100g without battery, around 3kg on the run