Scrap Mechanic - The flat loop - Part 3 - Tight corners - 4 X harder to tune 

wow, what a simple way to make a train

would you say that half speed through corners would be sufficient, because then you could just puls the input to the engine as fast as possible using the XOR Gate. first make a loop with three gates, two AND gates and one NOR Gate. then feed the three outputs into the XOR Gate. then you can input a sensor to the 2 AND gates, this should lock it in a position where the XOR gate is on. and you can feed the XOR into an extra AND gate shared with the Defult input to the engine. now when the sensor is triggered the engine will rapidly turn on and off essentially halving the output, now it should automatically slow down through corners if the sensor is placed correctly, and you would still be able to turn on and off the system. this method should save you a bunch of time space and Performance due to the lower amount of bearings needed. hope it helps 👍

This is a really cool idea. But, I would have scrapped it for the metal cost alone.

Man, that's cool! And who needs actual train tracks anyway? Let's just cover the whole world with stuff, just like Isaac Asimov's novels! 😁😁😁