After hinging the doors on my rhino I decided they needed a way to open.
I decided Hydraulic rams were the way to go so I thought I would share how I made them.
1.) Using a round file notch out the top of a 2.4
mm plastic tube and glue another short piece in this recess. For my rhino I cut the total length to 16
mm
2.) Bend a paperclip like shown below. Cut and bend to shape. For my rhino I cut this to 19
mm
3.) Using a piece of sprue from a scout kit cut a notch using a razor saw and widen using sand paper or a very thin file until the paper clip fits in the gap. Trim this piece so that if fits on the side of the checker plating of the door. Carefully drill through it so that the ram can be pinned. Glue to the door making sure the door still closes
4.) Drill 2 holes on either side of the inside of the door and pin the hydraulic cylinder to the door frame. I used a model railway track nail for this.
5.) Insert the ram into the cylinder and pin the ram through the bit of sprue attached to the door.
*Still playing around with it at this point so nothing is glued or anything. You can see that one ram is around the wrong the way and the pin in door frame is loose*
Door closed