I admire the thought and work put into this. However, it would seem that in some cases you WANT the train to derail if it runs through the switch the wrong way - such as if it's a car that got away. A solid, locked switch in locations where that might happen would be a Good Thing. On the other hand, the guy does seem to have invented a better spring switch. Congratulations! Now let's see if it can be scaled up somehow.