The problem with RPM switchining is that whilst it works great at full throttle on a dyno pull, it will have implications for when you are at that point in the rev range on a closed throttle and then open it etc.

If I need to do an electronically controlled solution then I will look into it, but this thread isnt about that, its just about someone finding a flaw in my logic for the mechanical solution.

There are hundreds of way to do this, most of them extremely complex and requiring lots of setting up time that will mean I dont have time to do it for years as I get so little free time, so what I want to know isnt what is the perfect solution in an idela world, I want to know if there is a reason that what I have come up with wont work well enough to make it worth doing?