A concise engineering guide to torsion in circular shafts: angle of twist, polar moment of inertia, shear stress/strain, torque diagrams and practical formulas.

Torsion Explained: Torque, Twist and Shear in Circular Shafts

Understanding Torsion

In this video we will explore torsion, which is the twisting of an object caused by a moment. It is a type of deformation. A moment which tends to cause twisting is called torque.

Some of the things covered in this video include how circular bars deform under torsion, how we can calculate the angle of twist, and how we can calculate the stresses and strains that are generated in a circular bar as a result of torsion. We will also discuss internal torque diagrams, and why torsional failure is different for brittle and for ductile and materials.

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The Efficient Engineer is a channel aimed at mechanical and civil engineers. The mission is to simplify engineering concepts, one video at a time!

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Discover Toyota’s top 6 SUVs for 2025 — rugged 4Runner, family-ready Grand Highlander, refined Venza, Corolla Cross and RAV4. Compare price, powertrain, MPG and who each suits best.

Top 6 Toyota SUVs for 2025 — Rugged 4Runner to Efficient Venza

6 BEST SUVS made by Toyota 2025

Looking for a vehicle that blends reliability, technology, and performance? This video dives deep into the 6 best Toyota SUVs 2025 that are dominating every category—from off-road durability to hybrid efficiency and family-focused comfort.

From the rugged and timeless Toyota 4Runner, to the refined and fuel-efficient Venza, these Toyota SUVs 2025 have something for everyone. We highlight the powerful Toyota Sequoia, a full-size hybrid beast, and the ultra-practical Toyota Grand Highlander, built for growing families with plenty of space and advanced tech. The iconic Toyota RAV4 also returns with unmatched versatility and class-leading hybrid options, while the compact and budget-friendly Corolla Cross offers daily-driver excellence.

Whether you're an outdoor adventurer, city commuter, or a parent looking for a safe and spacious ride, these Toyota SUVs 2025 deliver unmatched value, durability, and long-term satisfaction.

Watch until the end to discover which of the Toyota SUVs 2025 is the best fit for your lifestyle—and get expert insight into what makes each one a standout.

Don’t forget to like, subscribe, and hit the notification bell so you never miss a detailed review of the latest cars and SUVs!

Comment below: Which one of these Toyota SUVs 2025 would you drive home today?

#ToyotaSUVs2025 #BestSUVs2025 #FamilyCarGuide2025 #carcarepro

Discover 10 practical, cost-effective engine upgrades—from air intakes and injectors to synthetic oil—that improve combustion, reduce losses, and boost fuel economy.

Boost Gas Mileage: 10 Underrated Engine Upgrades to Save Fuel

10 Underrated Engine Upgrades for Fuel Efficiency

If you're looking to maximize your car's fuel efficiency, you're in the right place! In this video, we reveal 10 underrated engine upgrades that can help you save money at the pump while also boosting your car's performance. Many car owners overlook these simple, cost-effective upgrades, but they can make a huge difference in how efficiently your engine runs.

We’ll dive into each upgrade, from upgrading the air intake system to optimizing your exhaust for better flow. You’ll learn how simple changes, like replacing old spark plugs or installing a more efficient fuel injector, can significantly improve fuel economy. These upgrades not only save you money but can also enhance engine performance and prolong the life of your vehicle.

Plus, we'll share insider tips on how to make the most of your car’s fuel efficiency without breaking the bank. Whether you’re an experienced mechanic or a car enthusiast looking for ways to improve your ride, this video is packed with practical advice you won't want to miss.

Don’t let your car’s engine go to waste! Watch now to discover these underrated upgrades and take control of your car’s fuel efficiency.

#EngineUpgrades #FuelEfficiency #CarTips #carcarepro

Solve odd engine behavior and clear warning lights with quick, free resets — battery disconnects, fuse pulls, TCM/TPS relearns and more. Step-by-step DIY fixes.

Free DIY Car Reset Tricks to Clear Warning Lights & Fix Rough Idle

Don’t Pay a Dime – This Car Reset Trick Fixes Everything!

Have you ever had your car suddenly act up — check engine lights, rough idling, or sluggish acceleration — and feared a huge repair bill? What if we told you there’s a car reset trick that mechanics don’t talk about, and it could fix everything for FREE? Yes, you heard right. In this video, we’re revealing a powerful car reset method that can solve common issues with zero cost, no special tools, and just a few simple steps.

Whether your car won’t start, your check engine light is on, or you’re facing weird electronic glitches, this easy fix could be the answer. Based on expert advice and real-world garage experience, this guide walks you through how to perform a safe car reset that can restore your engine’s default settings, recalibrate your sensors, and even eliminate minor performance issues.

You don’t need to be a mechanic to do this. It works for most modern cars and can help avoid unnecessary visits to the shop. This trick involves resetting the ECU (Engine Control Unit), clearing adaptive memory, and helping your car run smoother again. It’s the kind of insider knowledge every driver should know.

We’ll also explain when this reset won’t work, and why knowing the difference can save you from more serious damage. Don’t waste money on diagnostics just yet — try this car reset trick first.

If your car feels “off,” this might be all it needs to get back to peak performance.

💡 Like, subscribe, and turn on the notification bell so you don’t miss other free car hacks that save time, money, and frustration.

#CarResetTrick #FixYourCarFree #MechanicSecretsExposed

Learn about 10 often-overlooked car safety systems — from blind-spot monitors to automatic emergency braking — and quick checks to make sure they’re active.

10 Overlooked Car Safety Features You Should Enable Today

Most Overlooked Car Safety Tech Could Save Your Life

Your car may be equipped with life-saving technology—but chances are, you’re not using it to its full potential. In this video, we reveal the most overlooked car safety tech that could literally save your life. From blind spot monitoring to lane-keeping assist, many drivers either ignore or disable these features without realizing how powerful they truly are.

Modern vehicles are equipped with smart systems that work silently in the background to prevent accidents, alert you to dangers, and even take control when you're distracted. But without proper understanding, many car owners miss out on their benefits. Whether you're driving a brand-new model or a late-generation used car, it’s time to take full advantage of these advanced safety systems.

We’ll break down what each feature does, how it works, and why it matters. You’ll also learn how to check if your vehicle has these technologies and how to activate or adjust them. Plus, we’ll expose some common misconceptions about safety tech that could be putting you at risk.

Don't wait until it's too late to realize your car had a feature that could've avoided a crash. Watch until the end to discover the ONE feature most mechanics say drivers ignore the most—and why that’s a huge mistake.

If you care about your safety, your passengers, and your vehicle’s value, this video is a must-watch.

👉 Hit the like button, subscribe, and turn on the bell so you never miss life-saving tips like these!

Discover 12 legendary inline‑6 engines — from Volvo and Toyota diesels to BMW and Ford Barra — that routinely hit high miles, why they last, and practical maintenance tips.

12 Legendary Inline-Six Engines Known for Extreme Longevity

12 Most Reliable Inline 6 Engines That Last Forever

Some engines come and go, but inline-6 engines have stood the test of time, proving to be some of the most reliable and longest-lasting powertrains ever made. In this video, we reveal 12 legendary inline-6 engines that refuse to die, known for their durability, longevity, and impressive performance.

From the Toyota 2JZ-GTE, famous for its bulletproof design and tuning potential, to the Ford 300 4.9L, a true workhorse that has powered trucks for decades, these inline-6 engines have gained a reputation for outlasting competitors and racking up miles with ease.

Is your engine on the list? Watch until the end to see which engine is ranked #1 as the most indestructible inline-6 ever! Plus, we’ll share expert-backed maintenance tips to help your engine last even longer.

Like, subscribe, and turn on notifications so you never miss another must-watch engine reliability video!

Comment below: What’s the highest mileage you’ve ever seen on an inline-6 engine? Let’s discuss!

#ReliableEngines #Inline6Power #LongestLastingEngines #Carcarepro

12 Most Reliable Inline 6 Engines That Last FOREVER

Explore 100+ wooden garage storage ideas—from pegboards and rolling carts to built-in benches and magnetic holders. Practical DIY tips to organize tools fast.

Smart Wooden Garage Storage Ideas — DIY Solutions & Tips

100+ Genius Wooden Garage Storage Ideas to Organize Your Tools

Wooden tool storage solutions offer a perfect blend of functionality and aesthetics, catering to the needs of organizing tools while enhancing the overall ambiance of a workspace. Whether it's a professional workshop, garage, or a home DIY area, wooden storage options present a wide array of possibilities, ensuring tools are not just organized but also well-preserved.

We are trying to give hidden amazing decor and art ideas , these videos seems simple but we are spending hours to find these ideas an edit them together to make these videos for you.  hope you will like these ideas and leave a comment about you suggestions down below in the comment section.
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Cut through the hype — discover 10 engine additives that deliver real benefits, 5 to avoid, and clear guidance on when and how to use them to protect performance.

Engine Additives That Work: 10 Proven Picks and 5 to Avoid

Top 10 Engine Additives That Actually Work (and 5 That Don’t)

Are engine additives worth the hype—or just a waste of money? In this eye-opening video, we break down the top 10 engine additives that actually improve your car’s performance, protect internal components, and save you from costly repairs. Plus, we’ll also expose 5 so-called “miracle” products that don’t deliver and may even harm your engine.

Whether you drive a high-mileage vehicle or a brand-new car, the right engine oil additive can make a huge difference. From detergents that clean sludge to friction modifiers that boost fuel efficiency, we explain what each additive does—and how to use it safely.

Learn why brands like Liqui Moly, BG MOA, and Lucas are praised by real mechanics, and find out which common additives are full of marketing hype. Don’t waste another dollar until you watch this!

We’ll also show you:

How to apply additives correctly

What to avoid based on your car engine type

What fuel system cleaners actually restore lost performance

The truth about high-mileage oil treatments

When it’s better to skip additives altogether

If you care about your car’s engine health, fuel economy, and long-term reliability, this video is your ultimate guide. Simple, honest, and based on mechanic-approved data.

Like, comment, and subscribe to stay ahead of car problems before they start!
#engineadditives #carcaretips #automaintenance

Discover 12 expert-backed car maintenance habits that help your vehicle surpass 500,000 miles without costly repairs. Learn how to prevent rust, protect your fuel pump, and keep your engine healthy with simple routines.

Essential Car Maintenance Habits to Reach 500,000+ Miles Without Major Repairs

12 Habits for Car Maintenance That Make Your Car Last Over 500k Miles Without Repairs

12 Habits to Make Your Car Last Over 500k Miles Without Repairs

Did you know that most cars don’t die from age—they die from habits. Over 75% of major breakdowns come down to bad maintenance. But what if you could break that pattern—and drive the same car over 500,000 miles without a single major repair?
Today, we’ll reveal 12 expert-backed habits that keep engines, transmissions, and suspensions alive far beyond their limits. And at the end, I’ll share a one-minute trick fleet mechanics use to spot disasters before they happen.

📺 Watch the entire video for more details!

About Car Guide
🎥 Videos about all kinds of car issues, from engine problems to electrical glitches
🎨 Written, voiced and produced by Car Guide
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12 Habits to Make Your Car Last Over 500k Miles Without Repairs

Explore three delicious and easy salsa verde recipes featuring jalapeño, tomatillo, and creamy avocado. Perfect your green salsa game with these flavorful Mexican classics.

Master the Art of Salsa Verde: 3 Irresistible Recipes to Spice Up Your Kitchen

Salsa Verde Secrets: The 3 Most Popular & Delicious Recipes (Jalapeño, Tomatillo + Guacamole)

Getcha some American Pitmaster Rubs Here:
https://www.pitmaster.us/

My Salsa Recipes 👇
https://www.youtube.com/playlist?list=PLO8_QMqU9cR9jFhHut-5T9bTCb-zwMuUu

Fajitas: All You Need to Know (Playlist)
https://www.youtube.com/playlist?list=PLO8_QMqU9cR8zG-Wl5ITFewCOF2GyDHZG

Discover how to install a stunning paver walkway and create a beautiful outdoor fire pit patio with our detailed, easy-to-follow guide. Learn tips, tools, and tricks for a flawless project.

Step-by-Step Guide to Building a Durable Paver Walkway & Fire Pit Patio

How to Install a Paver Walkway: Building a Stunning Outdoor Fire Pit Patio

Building a round patio from a paver kit SEEMS simple, but it's also a ton of work! In this episode I'll show you step-by-step how I measured and dug out the sod, raked and tamped a solid base of gravel, added sand, and then placed each paver (oh, and added a fire pit on top, too!) You'll also see the REALLY dumb mistakes I made along the way, and how I fixed them.

DIY difficulty level: Medium - just because it's a lot of digging and hard labor. It's not rocket science, but you WILL be sore at the end!

PAVER PATIO INFO: Italian Renaissance Circle kit from Basalite in Positano color
https://www.basalite.com/products/circle-kit

FIRE PIT INFO: Grand Fire Pit kit from Basalite in Positano color
https://www.basalite.com/products/landscaping-garden-products/outdoor-living/necessories-fire-pit-kit-series

CAPSTONES: We got from a local cement artist who was selling them at the landscaping place.

Total cost for the kits and the capstones was $1400 (plus we also paid for way too much gravel mix and sand, so your own costs there may vary).

Intro: (0:00)
Measuring the circle: (0:17)
Digging up sod and dirt: (0:46)
Tamping gravel base: (2:02)
Adding sand layer: (3:03)
Laying pavers: (4:01)
Building the fire pit: (10:26)
Finishing details: (11:03)

#BroBuilds #BrosNotPros #BackyardProjects

My 4-Day Fire Pit Patio Build [Full DIY Project]

Discover the key construction machines that power major projects, from earthmoving to road building, explained clearly in just 15 minutes.

A Quick Guide to Essential Construction Machines on Job Sites

Every Construction Machine Explained 

A very quick overview of nearly every machine you'll see on a construction site
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Practical Engineering is a YouTube channel about infrastructure and the human-made world around us. It is hosted, written, and produced by Grady Hillhouse. We have new videos posted regularly, so please subscribe for updates. If you enjoyed the video, hit that ‘like’ button, give us a comment, or watch another of our videos!

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DISCLAIMER
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This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes.

SPECIAL THANKS
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Source: https://www.youtube.com/watch?v=U6fBPdu8w9U
Video by Grady Hillhouse
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Written by Ralph Crewe
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