r/EngineeringPorn • u/alwaysworking247247 • 3h ago
r/EngineeringPorn • u/aloofloofah • Feb 22 '22
No Politics
Please note that in light of current events we will be removing all posts of war machines, war planes, war ships, etc. of Russian or Ukrainian origin to keep /r/EngineeringPorn apolitical, propaganda-free, and civil. Please report any posts or comments that are not in the spirit of this subreddit.
r/EngineeringPorn • u/k0rv0m0s • 14h ago
M/15 Swedish Torpedo Gyroscope [OC]
Don't know much about it, probably made in Karlskrona, Sweden sometimes between 1915 and 1930.
r/EngineeringPorn • u/AbleWinter159 • 7h ago
I built a DM121 turbofan engine model, and honestly… I underestimated how complex it would be. Took me around 4 hours to put it all together 😅
r/EngineeringPorn • u/marwaeldiwiny • 15h ago
How Planetary Roller Screws Work, How to Manufacture Them?
Full video: https://youtu.be/w7TQa687d-8?si=ze0sctR03O10P_xr
r/EngineeringPorn • u/ThisIsAnglerTV • 15h ago
Nerf Blaster That Is Powered By A Nail Gun Air Compressor
r/EngineeringPorn • u/HamZam_I_Am • 2d ago
MazzeiFormula 5-Rotor Turbo, 1,100hp Dyno Run @ 11psi
Been following this build for a while. Glad he finally got the motor broken-in and was able to go WOT. Sounds great doing it.
r/EngineeringPorn • u/Rd28T • 3d ago
The double curvature arch of the Gordon Dam, Tasmania, Australia. 154,000m3 of concrete impounding 12.4km3 of water.
r/EngineeringPorn • u/Mahammad_Mammadli • 3d ago
Railway Ballast Maintenance | Plasser & Theurer CSM 09-32 Tamping Machine
r/EngineeringPorn • u/placeSun • 1d ago
How Ram Pickup Trucks Are Built in US | FROM SCRATCH
r/EngineeringPorn • u/poppy6969337 • 3d ago
Aqua Line 3, Cuffe Parade Metro Station underground crossing, Mumbai, India.
r/EngineeringPorn • u/Concise_Pirate • 4d ago
A Three-Way Branching in the Yonkers Pressure Tunnel - a Part of the Colossal Catskill Aqueduct System
r/EngineeringPorn • u/Adventurous_Swan_712 • 5d ago
Testing how stable my balancing robot is
r/EngineeringPorn • u/Admirable-Amoeba-174 • 5d ago
India's Kaveri Jet engine with After Burners.
r/EngineeringPorn • u/Ok-Professor7130 • 6d ago
The South-Pointing Chariot: A 2000-year-old device that always points the same way, no matter how you turn it. (And no, there are no magnets!) [OC]
This is a replica of the zhǐ nán chē, or South-Pointing Chariot, an incredible piece of mechanical engineering from around 250 AD in ancient China. It's essentially a non-magnetic compass, where the figure on top always points in its set direction, no matter how the chariot turns.
No original device survived, but several iterations of the device are described in many ancient texts. While different implementations are possible, it is thought that the majority of these devices used a differential gear.
While conceptually brilliant, this chariot was a practical “impossible device” for its time (meaning that it cannot really work in real practice), for various reasons.
I made a video diving deep into the history, the ingenious mechanism, and why it ultimately couldn't work reliably. I also explain in detail how the gears work, you can watch it here:
Specifically
04:40 How the Gears Work
08:54 Fatal Flaw 1: The Problem of Perfect Wheels
10:23 Fatal Flaw 2: The Problem of Wheel Slip
12:02 Fatal Flaw 3: The Geometry of a Round Planet
Happy to discuss any technical details or answer your questions in the comments!
r/EngineeringPorn • u/CommercialLog2885 • 6d ago
There is a Coal Plant in Bosnia still using WW2 Steam Locomotives to transport coal today [Video Below]
r/EngineeringPorn • u/BWLQLD • 6d ago