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Hi, totally new to anything trains and recently I got my hands on an old 1625 Lionel train set. Was totally dead but got it running when it’s off the tracks but just won’t run when on the tracks. The reason for that is I think because the transformer (1015) only puts out 7.6 volts at full power. My question is there any particular reason other than maybe being really old and worn out perhaps? Will I need to get a new transformer or is there something I can do to get more volts? (Any recommendations on what transformer to get?)  The power cord seems to have been replaced with a new one.   Thanks

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The 1015 is a very small 45 Watt Transformer capable of about 15-16V output. Unfortunately, they are a very simple transformer - there isn't much that can go wrong that is economically user serviceable. You can try cleaning the coil contact area with some contact cleaner (or something like CRC 2-26) and doing the same with the contact arm.

Unfortunately, it could be possible that the coil is shorted out internally.

Regardless of serviceability, the 1015 is not a serious transformer - if you are in any way thinking of building out an empire, a larger transformer is in order. A LW, KW, or ZW are all good options depending upon your vision.

If all you are going to run is your 1625, those transformers are a bit of an overkill. Anything past 12 volts is going to cause the top heavy 0-4-0 to fly off at curves. The 1625 is a difficult locomotive to find and is a collectors item. You don't want to break off the vulnerable marker lights. (if hasn't happened already). The 1015 transformer is better suited for your engine. You will get better fine control at lower speeds.  Are you getting the 7 volt reading with the engine on the track? Usually transformers work or they don't. Only getting half the power that is strange.  I would stick with a lower wattage transformer if your are just going to run your military set.

David7674 posted:

Just one more question would any of these A LW, KW, or ZW transformers be to much for the ol 1625 like burn something out in it or something like that?

I've run my 1625 (and my 1595 set) with all of those - an LW, KW, ZW even a modern CW. In theory you could burn it out if you ran it at 24VAC (the max of all those transformers) but there is no way it would stay on the track.

Yes, the 1015 transformer (and similar small transformers) is more than enough just for that little engine, but usually you don't buy a transformer to match an engine - you buy a transformer to match your layout.

Ok thats what I was wondering the CW-80 Transformer seems like the best replacment. Yes I kinda knew it was a collectors item and surprised myself that I acually got it going was just really dirty just cleaned it up could(probably will) still do a better job at it than I did. Am get 7.6 right at the posts did try resodering some of the attached wire but still getting the same voltage. 

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