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Engineering, Motoring, cycling, etc

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This section is just for random bits about bicycles, motorcycles and in general the automotive world including some various engineering feats and considerations to the mechanical world

440C. I often hear a lot of misconceptions about one of my favorite knife steels, 440C stainless steel, and I want to clear up a few of them. 440 stainless steel has gotten kind of a bad rap because a lot of factory knives use 440 stainless, sometimes called "surgical stainless".


It is very important to understand that not all 440 series stainless is the same. In fact, there are different grades of 440 stainless with VERY different properties. There is 440A, 440B, and 440C. 440A and 440B are "softer" grades of 440 stainless steel. While they are VERY rust resistant and will take a great looking mirror polished finish, they will not hold an edge nearly as well as 400C. 440C is a considerably better and more expensive steel and if a blade is made from 440C it will almost always be described as, or marked, "440C".

This is one of the primary differences between mass produced factory knives and handmade custom knives. Will a New Glass Battery Accelerate the End of Oil? Electric car purchases have been on the rise lately, posting an estimated 60 percent growth rate last year.

Will a New Glass Battery Accelerate the End of Oil?

They’re poised for rapid adoption by 2022, when EVs are projected to cost the same as internal combustion cars. However, these estimates all presume the incumbent lithium-ion battery remains the go-to EV power source. So, when researchers this week at the University of Texas at Austin unveiled a new, promising lithium- or sodium-glass battery technology, it threatened to accelerate even rosy projections for battery-powered cars.

“I think we have the possibility of doing what we’ve been trying to do for the last 20 years,” says John Goodenough, coinventor of the now ubiquitous lithium-ion battery and emeritus professor at the Cockrell School of Engineering at the University of Texas, Austin. Phonon Lasers Make a More Practical Sound. Ever since the laser saw the light of day a half century ago, researchers have been playing with the idea that something similar could be created using sound rather than light.

Phonon Lasers Make a More Practical Sound

But the concept made little headway in the ensuing decades. In 2009, the situation changed abruptly, when scientists at Caltech and the University of Nottingham, in England, using tiny drums and stacked semiconductors, respectively, employed conventional lasers to stimulate or probe the emission of a stream of “phonons”—the quasiparticles of sound—proving that phonon lasers, or “sasers,” were indeed a sound idea. Now researchers at NTT Basic Research Laboratories, in Japan, have taken a significant step forward by fabricating an entirely electromechanical resonator on a chip that also eliminates the need for the lasers that previous devices required. The word laser is an acronym for “light amplification by stimulated emission of radiation.” Other phonon laser researchers have been improving their devices, too. Best Of 2015: It's A Turbocharged, EcoTech-Powered, Mid-Engined Chevrolet Cavalier Convertible With Right-Hand Drive, And It's Wicked! - (Photos: BWC Fabrications) (Note: Easily the wildest car I’ve laid eyes on this year, this Cavalier looks like something I would’ve drawn in the middle of math class in junior high. Best Of 2015: It's A Turbocharged, EcoTech-Powered, Mid-Engined Chevrolet Cavalier Convertible With Right-Hand Drive, And It's Wicked! -

Using the four-banger to make healthy power adds to the creativity factor, and using RHD parts from the export-only Toyota Cavalier give the car an exotic feel. Kadenacy & Sonic Flow – Technology Elevated. Kadenacy explains the acoustic phenomena being developed for the Sonic Flow engine like this: “All the foregoing difficulties and disadvantages inherent in prior installations are overcome or avoided in the power plant of the invention, in which a two cycle internal combustion engine is employed and the engine is operated to utilize the phenomena of explosive exhaust and implosive inlet, the use of such phenomena being fully explained in my co-pending application, Serial No. 588,189, entitled Power Plant” and filed on the same date as this application.

Kadenacy & Sonic Flow – Technology Elevated

Reference may also be had to my prior U. S. A Brilliant View Into Aerodynamics. There’s probably nothing more underestimated in a car’s development and performance than actual aerodynamics.

A Brilliant View Into Aerodynamics

What was born as nothing more than a black art has slowly and very successfully turned into an ever-evolving technology that has the potential to improve pretty much every single aspect’s of a car’s capabilities, not to mention make the difference between winning or losing a race in a lot of forms of motorsports. However, successfully understanding and harnessing this interaction between a car and the airflow that surrounds it at any given speed is probably one of the most misunderstood modern-day sciences, explaining why many manufacturers have made huge investments in wind tunnels and super computers to virtually process an outstanding amount of data. Varying opinions and assumptions, not to mention embellished figures, there to serve as marketing tools rather than anything else, have all contributed into making aero quite confusing.

So there is a knowledge gap there. Results from Gasoline and CNG Engine Tests with the Corona Ignition System EcoFlash. Self-Loosening of Bolts and Nuts. Self-Loosening of Bolts and Nuts A significant advantage of a bolted joint over other joint types, such as welded and riveted joints, is that they are capable of being dismantled.

Self-Loosening of Bolts and Nuts

This feature however, can cause problems if it unintentionally occurs as a result of operational conditions. Perfect Engine Sealing Starts With Proper Head Bolt Use - Engine Builder Magazine. How important are the various fasteners in an engine?

Perfect Engine Sealing Starts With Proper Head Bolt Use - Engine Builder Magazine

Consider this: the head bolts have to withstand tremendous loads to keep the cylinder head sealed tightly against the head gasket and block. In an engine with four inch cylinder bores and peak combustion pressures of around 1,100 pounds per square inch, each cylinder exerts about 13,827 lbs. of pressure against the cylinder head at full throttle. In fact, head bolts may have to handle loads of more than five tons per bolt at wide-open throttle!

The clamp load that is typically required to keep the head gasket sealed under these operating conditions is about three times the peak pressure exerted against the head (this is called the "lift-off" force). As a result, the bolts around the combustion chamber have to exert a combined force of about 41,500 lbs. to hold the head in place. NS300L Home Page. The Charis Culture. Back in September we attended the nurotag homecoming show and met a very interesting dude.

The Charis Culture

His name was Larry. He had this immaculate Blue 280z parked at the farthest end of the parking lot outside of the MACC. It was in the shadow of some massive trucks and not very easy to spot. I spotted a sliver of it peeking through the parked cars so Joaquin and I headed over to get a closer look. We were awestruck to say the least. Comparison of ACZPs. Simple Corrosion/Oxidation vs.

Comparison of ACZPs

Galvanic Corrosion and Burndy's Penetrox A vs. Ideal's Noalox vs. Gardener-Bender's Ox-Gard Jan 2014 R. Foam Filling the chassis...... - Page 3. Originally Posted by CharWhen you did behind the B pillar and the cross bar, was the tape enough to hold it back? Behind the B-pillar we *probably* could have just used a sh*t-load of Gorilla tape.The cross bar was no problems with Gorilla tape.The US Composites 8 lb foam will find any openings you leave. As it catalyzes, it heats up and expands like crazy.Wipe off the surface being taped, in particular on the really dirty spots like under your frame rails. Get a reasonably clean surface for the Gorilla tape to adhere. Motoring, cars, driving, and traffic: Chassis Stiffening. These days we read a lot of about how car manufacturers are stiffening the chassis for every new model that they develop.

Each replacement model seems to be increasing chassis stiffness by 30% to 50% on the previous model. What this basically means is to improve structural rigidity of the car. This has a direct impact on handling and safety. With reduced chassis flex the car will have better cornering stability and also better crash protection for the driver and occupants. You may also notice that some car manufacturers seem to have cars that appear a lot stiffen in construction than others. Untitled. Sit back and think about it: Wrist Pin Clips and teflon buttons. We call them gudgeon pins here, but anyway...

They need to be held in the piston, or they will walk out the end. The four most common methods of retaining them are: 1. Snap rings, or "stock circlips. " These are kind of like a ring with the ends twisted in. 路上の出逢い. Polyurethane bushing a bad idea for the rear camber arms. - MY350Z.COM Forums. Just wanted to update everyone on this... Initially my thought on seeing the damage was that it would be due to the urethane bushings on the knuckle. Urethane bushings allow a pivoting motion, but does not really permit a twisting motion; some amount of twisting motion is needed as the suspension arms move through its different arcs.

As the urethane bushing "binds" up, it will over time fatigue or bend the control arms. For example, on the 240SX and 300ZX, they have been known to damage front lower control arms and rear traction rods. However, I realized the next day that there was a more likely explanation for that exact damage seen on the OP's control arms, we believe now that the damage is from his dyno shop strapping the car down to the dyno using the camber arms. Destroyed Powerflex Front Control Arm Bushing. Quote: *should* and *are* two very different things. i can guarantee that it doesnt rotate around a single axis, especially when caster comes into play Group-N will provide what youre looking for IMO. and comes with the bonus of no maintenance needed. Задняя подвеска, ремонт…замена сайлентов во всех рычагах. Rear Trailing Arm Bushings. Just Say No to polyurethane bushings - Page 2. Quote: Just Say No to polyurethane bushings. My experiences with Poly bushings <info post>

Ok, so here are my experiences with Poly bushings in the front end of my Honda. Turbo/super + ITB's benefits ??? - Page 2. Your personal observations are respectfully noted. By those conclusions however, realize that one of my own cars should be a textbook case of the phenomenon you describe. Dimensions - Pipe Threads. Two common pipe thread sizes exist, the tapered National Pipe Thread (NPT) and the straight National Standard Free-Fitting Straight Mechanical Pipe Thread (NPSM). Ever wonder how much horsepower those muffler silencers cost you? - Subaru Legacy Forums. STOP KILLING YOUR CAR! Mixing It Up, Time Attack Style - Anything Cars - The Car Enthusiasts. Simple Isn’t Bad. Showthread. Can I use calipers off of “XXX” and place it on my “XXX”? – Brembo Performance and Brembo Racing. EF Hybrid Suspension. Untitled. Optimizing commercial vehicle muffler size, volume via CFD. Contact with Other EN. Beware the Brass - Professional BoatBuilder Magazine.

34. Anodizing World: Corrosion between anodized aluminum and steel. 124 schleich. Article: When is stainless steel passive or active - formation of the passive layer. Article: Bimetallic (galvanic) corrosion risks from contact with galvanised steel or aluminium. Aluminium Corrosion Resistance - Aluminium Design. Corrosion between anodized aluminum and steel. SSINA: Stainless Steel: Corrosion. 2 aluminium and corrosion. Aluminum brake fittings ok use? Disconnecting for Fuel efficiency - GKN Driveline. Genetically Engineering an Icon: Can Biotech Bring the Chestnut Back to America's Forests? - Rebecca J. Rosen. Bimetallic 20071105114556. ('01-'02) Whose cv axles would you buy? - Subaru Forester Owners Forum. Article%20 %20Corrosion. Article%20 %20Corrosion.

Nickel Alloys-Stainless Steels, Nickel Copper Alloys, Nickel Chromium Alloys, Low Expansion Alloys. PennEngineering: Technical Help & Learning Center - Galvanic Corrosion. Rivet Nuts & Snaps. Cupronickel. ASK: meaning of 12x1 BBL & what type of flare is this pipe? Galvanic corrosion chart. ATF, Differential, Trans, Brakes, P/S. Does stainless react with aluminium? JACKS BASICS PAGE/H7.HTM. Bolt Science Web Site. Another Deltic link but a very good one - Page 2 - The Technical Forum - The AUTOSPORT Forums. Aftermarket CV axle quality / vibration - Page 2. Autozone axles. A1 Cardone reman axles: are they really junk? (Page 1) — Bench Racing — The 24 Hours of LeMons Forums.

Future batteries, coming soon: charge in seconds, last months and power over the air. New Groundbreaking Battery Lasts 20 Years And Recharges In 2 Minutes. Could You Power An Electric Car With An On-board Generator - Naked Science Forum. Megasquirt 2 install on D16z6 using LSx coils - Mixing It Up, Time Attack Style - Anything Cars - The Car Enthusiasts. Magnesense Small Engines. Tech FAQ: Seriously, wider tires have lower rolling resistance than their narrower brethren. 3 wheeled contraptions and discussion - Page 5 - Cut-Weld-Drive Forums. The Dodge-PPG M4S Pace Car. New Technology for Welding Aluminum. 1991 Geo Tracker 2WD Conversion - Page 5 - DIY Electric Car Forums.

BLE10X1.0DF4.75 - Metric Brake Line End [BLE10X1.0DF4.75] - $1.94 : Bel-Metric, Metric Hardware, Metric Fasteners, Metric Bolts, Metric Nuts & Time-Sert Thread Repair. The Syner-D Research Diesel. Cunifer Brake Line. DIY Homemade Polyurethane Engine Mounts. O2 sensor simulator. Moroso Vacuum Pump Test - Car Craft Magazine. John VerSteeg's CFD Project. LiquidPiston unveils 40-bhp X2 rotary engine with 75 percent thermal efficiency. Duke Engines' incredibly compact, lightweight valveless axial engine. Crazy-Efficient Rotary Engine Lands Million-Dollar DARPA Contract. AGA Aluminium Welding Facts About UK.pdf. The Temperatures and Pressures of Racing! Spark Timing Myths Debunked - Spark Timing Myths Explained.

Tatra V855: Ass-Engined Nazi-Occupied Snowmobile. Bigger Exhaust = Better Mileage. GL5 Gear Oil - Is It Safe To Use In the Sporty? - ANSWERS [Archive] - The Sportster and Buell Motorcycle Forum. ZecOO – Concept Motorcycle. Copper Strip Tarnish Test: 10 Gear & Trans Fluids. Oil=Oil? Engine Sealing: High Performance Head Gaskets - Engine Builder Magazine. Port and polish? I did some FE testing 64.8mpg -