I'm assuming the rails are hollow and formed by rolling tin plated steel like other tubular track - that's what it looks like in the pictures on the web site. The rail is basically an inverted "U" at the top; the two sides of the "U" are crimped together to form the web in the middle; then the two sides spread out into flanges at the bottom to anchor the rail with.
If you turn the track over, you should be able to see a bottom-accessible slit where the 2 sides of the rail are crimped together to form the web. You can insert a home-made spade lug or even a solid-core wire directly into the slit to make your connection. This technique has been used with GarGraves and other tubular track for a long time. If need be, you can gently open the slit to get the lug or wire into the slit. I prefer to solder the wire to a home-made lug made of sheet nickel silver - I like .020 thickness - and then put the lug into the slit for my connection.
Soldering to tin-plated rail can be done using a good-sized soldering gun, flux, and resin core solder. It requires considerable heat, which may begin to melt the plastic ties. The blackened coating on the rail will have to be removed to solder wire to the rail. I have only soldered to tubular track with metal ties in the past.
I recommend using the lug in the bottom slit technique.
yours in wiring
