I'm trying to adjust the top tube of my bike. I'm following the Step through frame video (https://www.bikecad.ca/step_through_frame) but when I click on the "extension icon" nothing happens, I can't change the parameter that it controls. Any ideas on how to fix this?
If you have curved tubes in the main triangle of the bike, the tube extension icons will be locked so that you can only define tube extensions along the centerlines of the tubes, not along the tube edges. However, even if this is the case, you should still be able to edit the value in the tube extension field. Unless the frame is locked, you should always be able to edit this value. Is the frame locked?
If this doesn't explain what's going on, please email me the BCAD file for this design.