Thanks for the replies, i think id better explain a little about the track system in use as it concerns how the track is powered.
Im going to be using scalextric digital system and a new power module (c7042) is due for release soon and i dont know if changes to the power rails will interfere with the digital system and how it records information.
If i could keep all my ideas together on a separate stand alone system i know no problems would be encountered. It had crossed my mind to take the power supply for my system directly from the track.
If part of one lane loses power when car 2 reaches dead strip area while car 1 pits, car 2 will stop.
So i thought by using a little servo to move a home made flipper i could prevent car 2 from entering pit by redirecting the car so it would avoid the scalextric pit sensor all together.
top pic is out of the box track
bottom pic is how id modify track (roughly, quick sketch);
car enters pit as normal and activates my pit in sensor and moves flipper to divert any following cars around scalextric pit in sensor. this would also act to improve close racing of cars and people would have to avoid car/take caution incase someone decides to pit. the car could even be diverted to the other lane.
I havent got any more files in my inbox and im getting used to using pcexpress and ltspice, im gettting my head around it all but its just information overload at the minute lol.
Again thanks for all your help so far.