Here are some engines made from Legos being revved until they break...
LEGO® 2854 6013937 - 6355727
LEGO® 2853
Technicopedia: 858
![BrickLink - Part 2853 : LEGO Technic Engine Crankshaft [Technic] - BrickLink Reference Catalog](https://img.bricklink.com/ItemImage/PN/9/2853.png "BrickLink - Part 2853 : LEGO Technic Engine Crankshaft [Technic] - BrickLink Reference Catalog")
BrickLink - Part 2853 : LEGO Technic Engine Crankshaft [Technic] - BrickLink Reference Catalog
motor - How to build a flywheel crankshaft piston pattern with technic? - Bricks
Technic V12 Engine Parts - Cylinder Crankshaft Piston etc. - Mindstorm NXT Lego | #541423377
LEGO Technic Engine Crankshaft (x10) 2853 Yellow - NEW 42114 42131 42122 | eBay
Lego Crossplane V8 60 FPS - YouTube
LEGO® 4119474 2853
LEGO Light Gray Crankshaft (2853) | Brick Owl - LEGO Marketplace
LEGO Medium Stone Gray Crankshaft (2853) | Brick Owl - LEGO Marketplace
NEW Lego TECHNIC Light Bluish GRAY ENGINE CRANKSHAFT - Ferrari - Lot of 2 | eBay
![MOC] I4 engine with working crankshaft and valves - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums](https://bricksafe.com/files/BrickBuildingFox/moc004/moc004-gears-0120.png/640x512.jpg "MOC] I4 engine with working crankshaft and valves - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums")
MOC] I4 engine with working crankshaft and valves - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
LEGO IDEAS - Mini Front Engine Roadster
LEGO PART 2853 Technic Engine Crankshaft | Rebrickable - Build with LEGO
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LEGO Dark Stone Gray Crankshaft Link (2854 / 10721) | Brick Owl - LEGO Marketplace
Build & Test Lego Engines: 1-cyl, opp-piston, S2, V2, F2, U2, W3, S4, H4, X4, radial-6 - YouTube
LEGO Technic - Upgrade Kit for Engine Motor Gear (Piston,Crank Shaft)- new parts | eBay
Amazon.com: Goshfun 67Pcs Crankshaft Engine Connecting Rod Parts Bricks for Standard Building Block Brands, DIY Small Particle Stem Building Blocks Educational Construction Toy Set, Random Color : Toys & Games
File:Crankshaft at 120 degrees.jpg - Wikiversity
Compact gear shift (2 speed) | Lego gears, Lego machines, Lego design
How do you make strong, 120 degree cranks for 12-legged walkers? - DIY Walkers
![BrickLink - Part 2853 : LEGO Technic Engine Crankshaft [Technic] - BrickLink Reference Catalog](https://img.bricklink.com/ItemImage/EXTN/33309.png "BrickLink - Part 2853 : LEGO Technic Engine Crankshaft [Technic] - BrickLink Reference Catalog")
BrickLink - Part 2853 : LEGO Technic Engine Crankshaft [Technic] - BrickLink Reference Catalog
Single crankshaft W16 Engine - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
LEGO® Technic set review: 42083 Bugatti Chiron | New Elementary: LEGO® parts, sets and techniques
![BrickLink - Part 2854 : LEGO Technic Engine Crankshaft Center [Technic] - BrickLink Reference Catalog](https://img.bricklink.com/ItemImage/PL/2854.png "BrickLink - Part 2854 : LEGO Technic Engine Crankshaft Center [Technic] - BrickLink Reference Catalog")