Lego Vacuum engine comparison I-6 VS I-4

Instructions can be found on my ReBrickable https://rebrickable.com/users/J.Mods.... (Inline-6 is a WIP at this time) If you have any other test ideas, leave a comment:) 0:00 - Intro 1:15 - How it works 3:46 - Sound Comparison 4:37 - Tunning 6:09 - Firing order 9:45 - Torque test 10:25 - Conclusion