TTaannggss
Hates T.P.& r1Cur. Retired for 3 after 40 in Hosp.

I am charging up my 9 volt. I have not used it in a few years. It is for a remote control hyper warp dune buggy.
This is far from the ideal solution. You will need to disassemble an throughly clean the track ends for the solder to attach to the rails. Then you will probably need to clean up the soldered joints with a file. Otherwise, loco and wagon wheels will bounce around and maybe even derail crossing the joints. A much better way is to solder wire jumpers across the rail joints. You still need to clean the rail where the jumper is to be soldered but this can be done with a wire brush in a Dremel type tool. You'll also need a high wattage, 150 to 200 watt, soldering iron/gun. You should practice on some pieces of track to get the hang of it before attacking your layout.Has anyone ever melted soder into a track connection to make it better conductive?
Have you read my post #14?Has anyone ever melted soder into a track connection to make it better conductive?
We did hint you would have problems with placing your track straight on to the ground. You really need something a lot firmer especially at the rail joints, and you will need to give the track a good clean every time you use it, so you will struggle with track power. Get someone who knows what they're are doing to look at your set up, rather than just blunder on and getting frustratedI am spending way too much time cleaning and fiddling around with connections. As time goes by it will only get worse.
There are manual speed controllers available often on Ebay, but you need to establish the operating voltage that is going to work best with the loco first.Can I get a very small dimmer switch? ..plus I want to pull rolling stock and that will slow it down as well. I used the 9 volt on the battery steam engine and it worked. I wanted to use it as a track cleaner. But it makes a racket...chugs and bells... I will not do that to my neighbours. I will probably dismantle it.