This topic is related to one I started yesterday about sound decoders, but I set it up separately in prototype discussion in case not too many people are interested in endlessly tweaking sound decoders.

The baseline question is can diesel electric locomotives move away from rest without changing the prime mover from idle?

Re: Procor "GP20" tank cars.  "Current non-pressure (general service) tank cars, contrary to the comments concerning Rapido's models, do not have "domes" --- a "dome" on obsolete tank cars is correctly called an "expansion dome".  Today, what are incorrectly called "domes" on pressure and non-pressure (not "low-pressure) are "protective housings".  Google "Field Guide for Tank Cars" --- it gives the true terminology for tank cars (which are not "tankers" or "tanker cars&quo

Need some advice here.

Current state of the build is in the photo below.  I want to put a partial length backdrop right behind the ridge.  (There may or may not be additional "wing" backdrops behind the cuts on the two ends.)

I have 12" wide hardboard so I will use hardboard. (I know there are a hundred other products I could use, but I'm going to use what I have.) 

I have found that a very good cleaning fluid for my airbrush, available at Michael's, Hobby Lobby, and art supplies lick Dick Blick. It is a "Brush Restorer and Conditioner". It's main use is to restore unusable brushes with dried paint. Although a bit pricey, it has no odor and will work with both acrylic AND solvent based paints. I first run clean thinner appropriate to the paint and finish with the "Conditioner" that works exceptionally well to dislodge pesky dried acrylic residue.