Bonjour,
You can place the cylinder fixing points where you want, as long as you respect the triangulation.
Example below, with the attachment to the mast that can be achieved by a through axis.
In principle you must avoid arriving at the stop, it may damage the seals. 5 to 10mm of unused travel on each side are necessary.
In the mounted direction, as we use a manual pump, no risk of having a water hammer, so we can take out the rod as much as possible. It's more the positioning tolerance that imposes a little margin.
In the downward direction, the piston can come into abutment in the bottom of the barrel but there is no impact. It is true that a flexible outer stop could absorb the speed at the end of the stroke and prevent the jack from supporting everything.
What force does it need to finalize the climb and how to manage the descent, if for example I use a hydraulic cylinder.
When the mast is almost vertical, it finds itself in balance, the weight no longer opposes the tilting and will even become leading for the last degrees.
As the operation of the hydraulic pump does not create restraint, the mast should not take too much speed before the support of the plate on the mounting base, otherwise everything will tear off and the mast will tip over to the other side.
For the descent, the flow must be throttled with the adjustable valve (see the previous document), until the desired descent speed is obtained.
Attention, the geometry of the kinematics will not allow a constant speed (variation of the lever arm)
A+
