General Engineering Forum

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Join the discussion of general engineering topics. The design, building, and use of engines, machines, and structures. Use the forum for any engineering topics not applicable to the specific categories.
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Sources of Information on Engineering
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Insights Why We Don’t Discuss Perpetual Motion Machines (PMM)
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31
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14K
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YOU: Fix the US Energy Crisis
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1K
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395K
What is this metal insert for in a desk?
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1
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195
Engineering Disasters
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0
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209
E-Bike/Scooter Li Battery Fires
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26
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3K
Why do all my clocks run slow?
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4
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277
2:1 Pulley Question
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8
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327
I need a concave mirror with a focal length of 150 feet
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38
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830
Unable to simulate bent structure in R soft Beamprop.
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1
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150
Questions about the Tesla turbine
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8
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2K
How Do I Identify and Locate My Curb Stop Valve?
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6
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339
How can I find the cleanout for my building drain?
2
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59
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906
Query on Isentropic relationships (such as PV^gamma = constant)
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1
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284
What Could Cause Issues with a Dry Sump Pump Upgrade to a Four-Stage System?
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18
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1K
Is the curb box placed in the ground over the corporation stop? (plumbing question)
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4
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342
Engineering task: How prevent metal balls from getting stuck when flowing down and out of a cylindrical container?
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7
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1K
Vacuum furnace argon fill system — advice needed
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3
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297
Calculate waterflow on inclined plane
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12
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2K
How do wind turbines do their thing?
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9
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2K
Software to convert images into perforated pattern
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4
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1K
Question about transient temperature and pressure for air flowing into a box
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1
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649
Blue or green solar thermal collector?
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2
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573
Measurement of actual CO2 mass emitted from a diesel engine
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6
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3K
Mystery noise in flue (no, it's not a critter)
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35
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3K
Modern US locomotive design and operation
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25
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5K
3"x3" steel tube, Structural engineering question
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12
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1K
Rate of room temperature change related to U values of composites
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10
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740
Why speed limits don't matter
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34
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2K
How does pulling a string start a lawnmower or a weed eater?
2
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76
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4K
Why is an Attitude Indicator not Built Like a Ball Compass?
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3
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1K
How can I avoid Foaming in my cutting fluid tank? (attached drawing for reference)
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18
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3K
Multiple electric generators on the same drive shaft
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3
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1K
Calculating power dissipated in a heat exchanger
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4
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1K
Gas liquifaction unit of minimum dimensions
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7
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1K
Impact Forces on a Clamped Rectangular Plate
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5
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943
Calculating how a car consumes energy (gasoline)
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8
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997
Submarine noise level reduction, stealth question
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9
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2K
Difference between Elastic Limit & Yield Point
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4
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15K
How to choose window fans to cool and dehumidify multi room 300 sq ft condo without air conditioning?
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8
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2K
Exploring End-Use Applications for recycled HDPE from used oil containers
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2
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1K
Derivation of First Storey Shear Rigidity for a Rigid Frame
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2
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2K
Vacuum pump design
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6
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3K
How to stop/reduce ultrasonic sound wave device?
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38
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9K
Technical drawing: reference dimensions
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12
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4K
Do you think this is an oil well, water well or what? (Tintype)
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10
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3K
The 41 second clock failure syndrome
2
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77
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14K
Cooling systems in thermal power stations
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4
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2K
Query regarding foam mattress 'shaking phenomenon'
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3
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2K
Wind gust duration to overturn a block
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28
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2K
Heat Transfer with Recirculating Chiller Problem
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13
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2K
Synhelion -- Using solar heliostat farms to create liquid fuels from Water Vapor and CO2
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7
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2K
How to find velocity of gas pump flowing into car tank
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6
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4K
Drain water from 5" pipe buried 9ft underground
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38
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4K
Compress helium in a CO2 cartridge
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10
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2K
Rethinking infrastructure in flood prone areas
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56
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5K
Replacing asphalt used on speed bumps with non-Newtonian fluid?
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7
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2K
Car stalls during idle after battery replacement, then fine after two days
2
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66
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6K
Calculating load for barn floor
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6
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2K
Optimal roller distance for dynamometer
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11
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2K
Help with Adafruit ICM-20649 IMU Orientation During Frisbee Throw
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8
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2K
Baltimore's Francis Scott Key Bridge Collapses after Ship Strike
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293
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What is the purpose of two units of mass in the Imperial system?
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59
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8K
Student Recreates the Archimedes Death Ray
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5
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3K
Need help with determining thickness of steel bars
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30
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4K
Is Electric Mining Equipment the Future of the Industry?
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2
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2K
Does such a valve exist? (water check valve)
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2
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2K
Extruding a curved tube of pasta dough
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39
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5K
Optimization of barrel length in pneumatic cannons
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26
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6K
Why Are My Bending Moment Signs Incorrect in the Direct Stiffness Method?
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3
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3K
Compressive strength of aluminum
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33
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3K
Airflow Restriction in Tobacco Smoking Pipe
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18
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4K
Hydrogen-fueled Internal Combustion Engine (ICE)
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18
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Dam Failures and Infrastructure Damage in a Changing Environment
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8
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4K
Which Umbrella Base is Best for Windy Conditions?
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10
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8K
Rsoft BeamProp software - redeem my misery!
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2
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2K
Reliable CO2 Cartridge Puncturing for Horizontal Acceleration Test
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10
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3K
"2001 A Space Odyssey" space station: Rotating or contra-rotating?
2
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61
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7K
What is the complete derivation of the nonhomogeneous fluid flow rate equation?
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3
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Automatic Window Opener - how does it work?
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11
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5K
Connected 2 Venturis in Series (need a solution)
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8
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3K
Wing Sails on modern ships
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38
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5K
How to attach clamp to metal bar?
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11
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3K
What adhesive is suitable for gluing steel and G10 material?
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32
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5K
Would it be possible to make a self powered fan?
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3
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3K
Calculation of coolant tank size required to feed multiple grinding stations
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4
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3K
Validating "NET Power's" use of the Allam-Fetvedt cycle
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6
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How much will my seaweed tanks heat up in the hot Indian summer?
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9
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3K
Car tires, informative video of the finer details
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4
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3K
Coastal Civil/Structural Engineering - Infrastructure Stability
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3
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Quantitative Risk Assessment Of buried crude Oil Pipelines
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7
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3K
Set up a siphon with a vacuum pump for my seaweed cultivation tank?
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4
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3K
Waste Container Handling Crane -- Why are we getting this lift offset?
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13
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3K
Tesla starts "full self-driving" beta test - follow-up
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22
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5K
Airbag Simulation using LS-DYNA: start from filled airbag
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1
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Pulley system with equal spacing
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5
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Calculate water level with conditions open to environment (static head)
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10
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3K
Deriving a mathematical model for a stick falling over
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3
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Quick release buckle strap with controllable release of tension
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22
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What Is the Combined Magnetic Force When Parallel Magnets Align?
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3
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Where is the 'Origin' on a Bode Plot?
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How to avoid gassing out from snowblower fumes
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27
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4K
Why Celebrate Engineer's Week with Cherry Pie?
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2
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3K