Although a lot of the functionality of my DOS programs is missing, the spreadsheets do allow me to display and share data with others. (This was a primary motivation for doing this write-up.)
Four spreadsheets are distributed across this website. They are listed below.
Overall Ratios & Speed in Gears is not only a calculation for speed in each gear but also a convenient spot to list all the overall gear ratios for the various bikes.
Flywheel MoI Calc offers an experimental method for determining MoI as well as calculations based on material density and dimensions.
Trials Bikes Driving Force Comparison is also where all the digitized dyno charts reside.
Zero-Loss Gearbox Analysis was not needed for this evaluation but I wanted to share the tool. As far as I know, it's an original idea. It offers a visual comparison of two dyno charts that span different rpm ranges. A section is devoted to using it to compare Montesa's 315R and 4RT.