Hi I'm new to this forum and wonder about the vertical movement. I see a lot of o people using screws ( of varying kinds) but I need speed since my project will be related to automated storage and retrieval system. My current thoughts are to use some standard linear movement design using Vslot ad the add a counterweight. Do anyone knows about any project using high-speed vertical movement. Is there a limit to the speed of Vslots? Or is this not a project for Vslot but instead should use linear rails?