This thread is more helpful than I could have hoped. Thank you!
The approach someone in here used involved 2 actuators each pushing 150# vs 2 actuators each pushing 1100# I am proposing. With the angle of the bars closed the force applied to get the 276# assembly moving totals nearly 3200#
Someone in there has a link to a set of scissor lift equations and model.
Scissor Lift Jack Force Bottom Load Calculator | Engineers Edge | www.engineersedge.com
This is the model I am using to work this out. There is a set of free body diagrams in there as well if you dig far enough.
I havent given up on this but something seems very off with my top. 170# is alot of force require to get this thing moving. I checked again using a hi lift jack to take myself out of the equation. Pushed nearly 200# with my jack and blocks of wood weighing about 35#. so the 170# is about right
I did calculate my top to weight 276# which sounds about right based on how heavy it was to move around.
I do have strong reason to believe that friction is working strongly against me. I think the current design is binding. Even when I found the point of neutral buoyancy where the top would sit still, It would still take me nearly 60# of force to move the top in either direction.
The conclusion I am coming to is that with the 1100# actuators and the main springs all working together would give me a total of 3102# of force. the load calculator says I need 3162# of force to get it moving. Which means this idea would probably not work. Even with the top empty the numbers are too tight. Never mind the solar panels and cargobox I wish to add.
I am now leaning towards the use of a hi lift farm jack to get it up. It is a bit of a trick that I wanted to avoid, but I can at least do away with my bottle jack, and use this as a winch if needed.
All that being said, This topic is still open for discussion. Im still toying with other ideas for actuators and something that could be a simple push button solution.