Thanks for the HT ratio & RPM values.
I developed a calculator in excel to see cause & effect on speed of tooth changes. My main goal is to examine the stock Sick Bike Parts jackshaft to include it in my project and see how it would work out on an existing 7 speed cassette and how it best relates to a NuVinci hub. Made one to show the basic HT install also. Tried to attach as a single page 30kb .pdf, but the forum limits are too small. Had to use .jpg instead. Can't attach as an .xls file either.
If any one notes any errors, omissions or updated information, please post it.