I am in need of a CAD model for a gas spring system to be used as a door closer for outdoor gates. I am looking for a model based on a similar product (the installation instructions for the similar product are attached). The gas spring system is intended for outdoor use and to provide a slow controlled gate close speed for a gate door. I am looking for a CAD model, brief comments on material selection and appropriate force specs for the system. The interior of the gas spring does not need to be designed since it will be purchased from a manufacturer. The gate closer is intended to compete directly with the product attached and perform a similar function with an improved design and easier installation if possible.
More information will be provided.
Here are images of the gas spring gate closer: