I'm designing a lift-assist system for a lightweight RV baggage door ( hatchlift products) and I'm trying to determine the correct gas spring force. The door weighs approximately 10–15 lbs, and I want it to open smoothly, stay securely open, and close without slamming.

I understand that factors like door weight, center of gravity, mounting positions, and opening angle all affect the required force. Is there a standard calculation or formula for selecting the correct gas spring size and mounting geometry? Any practical tips or resources would also be appreciated.