After investigating how this fuel/oil pump actually works, I'm wondering how it could actually vary the ratio? The fuel diaphragm has a direct physical connection to the oil diaphragm. So if these diaphragms are working in sync, driven by crankcase pulses, how could they ever change the ratio? If they are designed to feed eg. 50:1, and the crankcase pulse speed increases or decreases, so will the pumping of these diaphragms, in sync, for 50:1. More fuel to more oil, Less fuel to less oil, depending on the speed of the pulses. So I don't see how it will very the ratio at any rpm range.
Or am I incorrect on this?
Or am I incorrect on this?