The battery-less movement thread in The Spacecraft Exchange Posted August 31, 2019 Gods, I wish I found this thread earlier. I've been experimenting with K-drives for like 40 hours. Kind of surprised I don't see much use of pistons here. I thought that pistons+legs was the only way. Landing gear kept unloading after 3 or 4 pulses. Found that gravity and vessel mass do weird things to landing legs. All of my drives work with specific vessel masses. If a drive works with 5.6t vessel then it won't be usable with anything lighter or heavier. Although part number and arrangement don't matter.https://kerbalx.com/kuklerrr/K-Drive-16 My latest creation.