What would be the steps to design helical gear when the center distance is not negotiable? For example, I have to design a pair to transmit power between shafts that are 250mm
![Multi-tooth contact behavior of helical gear applying modified meshing equation - Jianhong Wang, Teik C Lim, Yi Ding, 2013 Multi-tooth contact behavior of helical gear applying modified meshing equation - Jianhong Wang, Teik C Lim, Yi Ding, 2013](https://journals.sagepub.com/cms/10.1177/0954406212441752/asset/images/large/10.1177_0954406212441752-fig1.jpeg)
Multi-tooth contact behavior of helical gear applying modified meshing equation - Jianhong Wang, Teik C Lim, Yi Ding, 2013
![Digital generating method for cylindrical helical gear based on indexable disk milling cutter | SpringerLink Digital generating method for cylindrical helical gear based on indexable disk milling cutter | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs00170-021-08533-x/MediaObjects/170_2021_8533_Fig1_HTML.png)