My job has been slow this week so I've had time to catch up and read all the posts and download some planes/choppers.
I've been working on piston stuff and I wanted to drop my hottest new tech. It's on kerbalx, but if you don't look often stuff gets buried pretty fast. It's kind of off-topic for this forum, but I wanted to release it here because you dudes make amazing sh*t and though you all would appreciate it the most.
Yo dog, (insert meme) I put valves on your crank so your pistons can push your crank while your crank pushes your valves so your pistons can push.
Here