Thank you for your comment! All the measurements used in this video were taken from a solved example. The purpose of the video is to demonstrate how to model helical gears when all the necessary calculations are already available. The values 120 and 240 are likely the pitch circle diameters. This video is specifically focused on the modeling process, not on performing the calculations.
you didn't explain how did you get the 120 & 240 !!!!!!
Thank you for your comment! All the measurements used in this video were taken from a solved example. The purpose of the video is to demonstrate how to model helical gears when all the necessary calculations are already available. The values 120 and 240 are likely the pitch circle diameters. This video is specifically focused on the modeling process, not on performing the calculations.