Thank you for the last drawing
, now i can see much better how it works. I don't know how looks the BMW VANOS or other VVT mechanism from inside ( I never seen a proper exploded view of one of those), i only know that they use a mechanism on the camshaft gear as you have done, so is this design a new concept from you, or have you take some ideas from actual systems?
And how much can you change the camshaft angle? it seems that if you can use the whole helical gear length, this angle would be about 45º, but I doubt that this could be made, because as you move the orange part ( I figure that this is moved by hydraulic fluid on the piston that is opposite side of camshaft), if i'm not wrong, the shaft would lose grip. It seems that the guide bits on the inner cone of the orange part aren't enough high to follow the groves of the shaft as the cone comes out completely.
You could change the slopes of the shaft cone and the inner cone to solve this problem, or you could use a cylindrical helical gear instead of a conical, obviously I'm missing something here. Why do you use a conical mechanism?
I'm quite impressed with your job, I like the VVT system, it's simple and it seems to work
, I use to think a VVT would be more complicated