In-depth and easy to understand engine balance explanation (highly recommended): https://youtu.be/TQlyS2rw-sk
2 Cylinder Airplane Engines - Technical Deep Dive : https://youtu.be/jtS9tkD3M4c
Follow me on Instagram: https://www.instagram.com/lets_go_aviate/
Image credit:
I4 engine block : Author AntoniusJ (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Rendered I4 pistons and camshafts : Author Wapcaplet at English Wikipedia (- (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Lycoming IO-390 : Author FlugKerl2 - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Animated Boxer engine illustration : Author MichaelFrey - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Animated I4 engine illustration : Author MichaelFrey - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
FK12 Comet with Lycoming IO-233 : Author FlugKerl2 - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Lycoming O-233LS : Author FlugKerl2 - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Continental O-200 on C150H : Author YSSYguy (https://en.wikipedia.org/wiki/User:YSSYguy) (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Mounted O-200 (2) : Author FlugKerl2 - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Red I4 block : Author DIZAS Felipe Bitu - (https://creativecommons.org/licenses/by-sa/1.0/deed.en) no changes made
Rendered I4 block : Author Wapcaplet - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Spartan Arrow 1 : Author RuthAS - (https://creativecommons.org/licenses/by/3.0/deed.en) no changes made
DH60 Moth pair : Author Alan Wilson - (https://creativecommons.org/licenses/by-sa/2.0/deed.en) no changes made
Mercedes-Benz OM601 wet sump : Author Didolevski - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
De Havilland Gipsy II aircraft engine : Author NJR ZA -) (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
De Havilland Gipsy Major : Author YSSYguy - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Heath B4 4-cylinder I4 engine : Jim1138 - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Wet sump lubrication system illustration : UtzOnBike - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Cessna 152 : Author MilborneOne - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Piper Cherokee 180 : Author Mike Burdett - (https://creativecommons.org/licenses/by-sa/2.0/deed.en) no changes made
Viking 150 : https://www.vikingaircraftengines.com/viking-150-engine
Colombo S.53 engine : Author MLWatts - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Rotax 915 : Author Matti Blume - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Coolant pump : Author Raimond Spekking - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Coolant : Author EvelynGiggles - (https://creativecommons.org/licenses/by/2.0/deed.en) no changes made
BA Eagle 2 : Author YSSYguy - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Miles M3A Falcon : Author TSRL - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made.
Miles M.14A Magister : Author Alan Wilson - (https://creativecommons.org/licenses/by-sa/2.0/deed.en) no changes made
Gipsy Major engine (blue block) : Author Nimbus227 - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Piston : Author S. Diddy - (https://creativecommons.org/licenses/by/2.0/deed.en) no changes made
Connecting rods : Author A7N8X - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Blackburn Bluebird : Author unknown, attribution The Flight magazine archive - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Simmonds Spartan : Author unknown, attribution The Flight magazine archive - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Spartan Cruiser : Author unknown, attribution The Flight magazine archive - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Subaru Boxer : Author Zytonits - (https://creativecommons.org/licenses/by-sa/2.0/deed.en) no changes made
Porsche I4 engine : Author Sfoskett~commonswiki - (https://creativecommons.org/licenses/by-sa/3.0/deed.en) no changes made
Lycoming IO-360 : Author Nimbus227 - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Honda Civic : Author Vauxford - (https://creativecommons.org/licenses/by-sa/4.0/deed.en) no changes made
Snowmobile : Author Arthur Mouratidis - (https://creativecommons.org/licenses/by/2.0/deed.en) no changes made