 
          I’ll have some recommendations for connections to specific
        
        
          decoders later in this column.
        
        
          A decoder with an internal heat sink will have a very flat side
        
        
          as shown in figure 3. Removing the heat shrink from these
        
        
          decoders will dislodge the heat sink. Once the heat sink is
        
        
          loose, it is beyond the scope of most modelers to get it back
        
        
          well enough to prevent damage to the decoder. I recommend
        
        
          against opening decoders like this. Fortunately, many decod-
        
        
          ers of this ilk already have the negative lead brought out.
        
        
          
            Kinds of energy storage
          
        
        
          Since most modern models have just about maxed out on fly-
        
        
          wheel storage, there is probably little to gain here. However,
        
        
          if your model doesn’t have a flywheel or two, I’d recommend
        
        
          adding one or two, if possible. Test the resulting loco before
        
        
          looking at electronic energy storage.
        
        
          
            3
          
        
        
          3: Decoder with internal heat sink - SoundTraxx Micro
        
        
          Tsunami TSU-750.