I’d like to try and make one of these charts to compare our mod alongside but for the life of me I can’t seem to get the right combination of columns and graph formatting in excel to reproduce one.
To begin with, you are actually looking at a composite of 4 separate graphs.
23in and 2300 rpm
25in and 2500 rpm
FT and 2300 rpm
FT and 2500 rpm
Create each graph independently and overlay them when done.
I am assuming you already have the data in a spread sheet? I would separate the data for each power/rpm setting into blocks. The generate a simple line chart.