Southern Pacific Switching Layout

[FCIN]

My main problem comes from the turnouts, I currently I need to hold the switch in position or else the engine will lose power, I assume that using ground throws will fix this?

Most likely installing ground throws should cure this problem. I use Peco turnouts because of their built in spring mechanism which eliminates the need for ground throws and have never had problems with them. If you do purchase ground throws, be sure and get the Caboose Industries version that has the internal spring to help hold them tight against the stock rail.

One other thing you might try is to slip thin plastic under the throw bar and see if that provides enough friction to keep the point rails in contact with the stock rails. A lot cheaper than purchasing ground throws. At least give that a try.

Another problem I have is the engine will randomly lose power, even when it is on a piece of single flex-track with feeder wires connected, I tried cleaning the track and the wheels of the engine but no luck, I am beginning to think that the engine is too light, so the wheels are barely touching the tracks.

Is this your BLI NW-2 you're having a problem with? Mine has never stalled and is quite heavy compared to my Atlas MP-15dc which has been known to stall once in a great while. Right now, I only have one set of power feeders attached to the rail as I'm still playing around with variations in the track plan, but have no power problems over the entire 20 foot main track and 5 industrial spurs. I'm at a bit of a lose here to figure out why your NW-2 would be losing power, especially when its on a section of track that has power feeders and I assume no short because of a switch not properly insulated.

You might try placing the engine on a surface that you know is flat and see if all the wheels touch and that the trucks are square.