About the only downside that comes to mind for DCC is its inherent complexity inside the "box". You can determine that a transformer/rheostat is kaput fairly easily, and determining bad electrical wiring is just a logical and methodical process. But, if you determine that the wiring and track connections are sound, but you still have no joy with the engines...all of them...then you have to send the unit to the factory if you are not an electrical technician or an electrical engineer (or a serious amateur). Similarly, if the engine dies, it can be a bit of a bear figuring out where the problem lies...is it pickups, a broken wire, or is it the decoder? A decoder can be easily tested, but then it becomes a returned or discarded item...not easily fixed.
I don't know if everyone would consider that a "downside" to DCC. The other thing is configuring the decoder using programming inputs. Some folks are never very comfortable with the process, and are nervous about it. Others have an aversion to opening and spending some time pondering the contents of the manual...they do the same for their DVD players, VCRs, and their computers.
But I would have to say that, as a non-tech type, I have been liberated by my clunky old Super Empire Builder with no CV readback. When I want to run a train, I only have to flick the same toggle as someone in DC, pick up the DT400 hand-held, depress the encoder knob I decide is handiest, and select the cab number of the engine. I am in business and can make the engine do everything operational that the real engines can do.
-Crandell
Well Ted I have been a diehard DC'er for 20+ years and I just changed over to DCC. Ya I have a major expense to switch all 20+ loco's to DCC but with the system that I bought I'm happy with it. Now I am in the proccess of redesigning my new layout to accommenate it. There no polarity issues with DCC as with DC you do. No big cab control center to deal with and the nice thing is having reversing loops in a plan instead of a continueous loop or oval. Without the cab block there is no figuring which track is on or off and and finding my loco's have been easier to operate. The only down side is the size of the layout and the amount of track involved and thats a simple fix with a booster for it. 5' x 10' layout you should not have to need one. A basic system should be enough for it. Thats all I have right now and I have 8' x 15' layout. Most units have a DVD with it to explain all the features it has.
4x8 are fun too!!! RussellRail
The only downside I can see is that a person who is already heavily committed to DC has to spend a lot of time and money converting the old DC engines. If you are just starting or restarting, I see absolutely no advantage to DC.
Dave
Lackawanna Route of the Phoebe Snow
Mine is the typical story...I had the Lionel O scale as a kid and then a simple HO setup (oval with 2 wires connected to one piece of track) 20+ years ago. Now I am looking to get back into HO again and it appears a lot has changed since my last train experience. I am planning a 5'x10' layout to begin with. I was convinced by a local train dealer to start with the conventional dc block wiring layout. I'll be honest, I have not completely gotten my brain totally around this concept yet. So I read the "How has DCC enhanced your train experience" thread and am now leaning toward DCC. It seems to make a lot more sense for me. Of course money is part of the decision, but for me, ease of setup and use are probably more important. My question is..."How has DCC detracted from your train experience"? I just want to see if there is a downside to DCC before I jump into it. Thank you in advance for your thoughts.