One of the reasons I stooped building slide out mechanism was simply I got lost I couldn't decide what way to go.
Here are some options:
1. buy prebuilt kit.... saves time but.... to much money 6k+ shipping
2. use hydraulic cylinders.
3. use cables
4. use chains
5. some combination of #2-#4
6. hamster wheel... (somebody's idea....)
Today I spent some time thinking/searching and decided to go the easiest way (at least I see it this way)
I will use 1 hydraulic cylinder per slide out.... right in the middle. The frame I am building is really massive 2.5"x2.5"x 1/4" square tubing all welded. Also this frame will be attached to pretty solid slide out box.
Here are few pictures from today.
I cut 3" opening to have a steel square welded at tubes intersection to make it stronger:
This is an inside tube with bearings installed:
The same tube from side. The bearing stick out just 1/16" above tube surface:
Here are both inside and outside tubes. The green square is where reinforcement will be added:
Tomorrow I want to finish the other side and weld it all together...