I think I 'll be reasonable this time, and simply wait for a sportman version of slotcar dragon system. I want something with timing, especially for running solitaire (it's a good way to see how modified cars performs, for example).
For now, I have 2 tracks to finish first : my h0 road track (I have to add the buildings, figures and fences) and my "multiscale" nascar oval (1/32 artin track, that I plan to run mostly 1/43 cars on it, but also a few 1/32 and h0 of course since it stills my favorite scale).
thank you for your help!