What transformer do I need?

[Buzzardbreath]

 

I am building a small room size layout using Lionel 027 track. I am using non DCC stuff, only original post war with very few accessories.I have just one train running on about 60ft of track, what is the smallest wattage transformer  I can use and have enough power? 

[bigdogjeff]

I would not go anyless then cw 80 watt transformer

[lionelsoni]

The length of track is not important for figuring how much power you need.  A pretty conservative estimate for a train is 5 amperes at 16 volts, which is 80 watts.  The sturdy 1033 or 1044 might work fine for you.  A CW-80 might also; but it has a bad reputation, and you must avoid the early models, which were disasters.

Another consideration is voltage.  Some locomotives, like the 773, need more than others; and, unfortunately, the 1033 puts out only a modest 16 volts.

Voltage drop along the track need not be a problem if you are careful to make good tight rail joints, or solder them.  An unbroken 60-foot loop has the same voltage drop as only 15 feet of un-looped track, which is to say about 60 milliohms, loosing only 300 millivolts for a train drawing 5 amperes.

With a 5-ampere transformer like the 1033, you can safely go as low as 20 AWG for wiring the transformer to the track.  But, if it turns out that you need feeders to keep the train from slowing when far from the transformer, don't use anything smaller than 14 AWG.

[Anonymous]

IMHO, the best powst war transformer for the price is the KW. Yes it is a bit more than you need, but it affords you alot of flexibility as well as the potential to expand in the future. If you look around you can find quality rebuilt KWs for < $75.00.

[willpick]

I would not use less than a 1033/1044. If you can find an LW(125W input 90W usable output), you'll have enough to run your PW engines + accessories.

[Seayakbill]

Always buy the largest transformer that you can afford. It never fails that eventually you will need to increase power to your layout.

[RockIsland52]

Seayakbill

Always buy the largest transformer that you can afford. It never fails that eventually you will need to increase power to your layout.

That is what my father did almost 6 decades ago, and it has proven to be the right choice......never had to buy another, and it has always has had the power to run whatever I need, trains and accessories.

Jack.

[wm #734]

The RW is a very reliable transformer. It put out 110 watts, has a max. voltage of 19V, and can be found for around $35. I have one, and the only con I can think of is the handle, which is somewhat fragile.

[Buzzardbreath]

 

Thanks for all the input you kind people have mentioned. Looks like I'm going to use an RW for my layout. Thanks again for all the info!   

                  Buzzard Breath