So the big question; does the magnetic primer make a difference you can notice?.................................YES
Here's the test cars:
Scalextric A1 GP, pretty much stock.
Slot.It HRS chassis with a Strombecker Ford J body. This is a HEAVY magnet car (2 traction magnets).
My non-magnetic Ninco Porsche 997 ran well, but it was obvious there is no grip on the track yet. The car was very loose, even with the softest compound NSR tires. The Scalextric A1 GP ran similarly to an Aurora Magnetraction HO car. The car slid but it was very controllable, unlike a magnet car on plastic track where it will slide out until the magnet loses contact with the rail. At that point of lost contact to the steel rail on the track the car flies. It was more like the car had tires that were hooking up really well. The Slot.It HRS car would also slide, but not nearly as much. Just from the initial test laps it looks like this track is going to be much faster than I thought it would be.
Wiring is the next step. ---------------------Bill