Small Vacuum/Air powered engine V3 + Throttle

This here is my third iteration of my single cylinder vacuum powered engine! Whether it is just to play around with, or to show to someone, this is a great model to show how these little vacuum engines work! Maybe you personally could even learn something too from building it, physically holding it, and running it. Assembly video is at the bottom of the description. NOTE: The first four groups that are numbered, are all the parts for this engine, the rest are just split up, incase you need the separate files.Other than the printed parts, you also need: A small fishing wire, a rubber band, a 1cm screw(~3.5mm wide) for idleThis is the V3 version, which now includes:Most importantly, a throttle configuration! This throttle consists of a basic, but reliable pull cord mechanism, where the user must pull a small handle to rev the engine! It also includes an adjustable idle screw to help the individual user tune to their liking(Note, engine can be ran without the use of the throttle assembly)