Adaptable ballast spreadsheets, using array formulae

As airframes get stronger and skinnier, the ballast arrangements get ever more complex. Many F3F models carry wing ballast, joiner ballast, and optional steel joiners. Generating a ballast chart to stick on your trannie box can be a bit of a challenge!

This post describes how to construct a ballast spreadsheet using a generic structure which is easy to adapt for specific models.