Thanks for using the Gearing Calculator! This is based on my original work which can be downloaded as an excel spreadsheet here. Be advised that it is no longer supported and has some annoying bugs. This new version has many new benifits - no longer requires excel, has less features, and allows for custom inputs.
I have also included a tire size calculator to make life easier and can be found here. You can also e-mail me transmission setups to be included in the drop down list. Just use the contact link below!
I am going to stream line the code sometime in the near future, so that the tranny information is more dynamic. AKA, only show fields which have data, and allow more then 2 final drives per group.