Discontinuous seat tubes (Designing beam bikes)

With renewed interest in beam bikes, BikeCAD version 13 has a new option in the Seat tube section of the tubing dialog box. Clicking Discontinuous will present two new input fields. Dimension J defines the length of seat tube connected to the top tube and dimension K defines the length of seat tube connected to the BB. By default, these two discontinuous sections of seat tube are colinear. However, they can be shifted relative to each other using the Curved checkbox.