That works great until you miss ignition on the opposite side, then wham it bottoms out and destroys the other side of the engine. A gas spring is a pretty sim

That works great until you miss ignition on the opposite side, then wham it bottoms out and destroys the other side of the engine. A gas spring is a pretty simple mechanism and can't misbehave (too bad you can't put it to work, though -- probably a lot of heat being wasted compressing it).