Build & Test Lego Engines: V8, U12, H16, X24, multirow-radial-42, S100

More engines. Bigger ones. Enjoy!

00:00 V8: 8-Cylinder V-Engine
01:04 U12: Twin-Straight-6 U-Engine
02:38 H16: 16-Cylinder H-Engine
04:38 X24: 24-Cylinder X-Engine
06:11 42-Cyl 7-Row Radial-6 Engine
09:49 S100: Straight-100 Engine
11:34 side-by-side and sound comparison

Note: In real life the U12 and X24 have 3-throw crankshafts (pistons are 120 degrees apart) and the 42-cyl has a 6-throw crankshaft. Those are a bit complex to do with Lego so I used simpler 2-throw cranks (180 degrees). Thus firing orders are not correct in those engines. Also the 42-cyl Zvezda M503 was done with radial-6s instead of the real life radial-7s because I couldn’t find proper Lego parts for connecting pistons to the crankshaft. The Sherman 6046 U12 engine gearing and phase offset between the shafts were unknown to me so I just guessed them to be 1:1 and 90 degrees. In other ways the models should be correct (hopefully). The V8 has a flat-plane crank that were used in Formula One engines. Lotus 46 H16 flat-plane crank, gearing and phase between the shafts should be correct according to the schema image I found (shown in the video). The U12 has both crankshafts rotating to the same direction as was explained in mapleleafup forum.

Photo attributions:
“Kimi Raikkonen 2007 Britain 2” by Rob Snell (CC BY 2.0)
“Sherman M4A2E8 at CFB Borden” by Balcer (CC BY 2.5)
“Lotus 43 Goodwood Festival of Speed 2015” by neilhooting (CC BY 2.0)