Science of Cars

Automotive engineering and mechanical science

Things You Should Know About Types of Portable Oxygen Systems

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imageThousands of people on oxygen therapy have benefited from the new designs of portable oxygen systems. An active life style and being able to move about freely is especially important to patients on oxygen therapy.  For  most people it is necessary but not a limitation but for oxygen therapy patients it is a factor they have to take into account all the time.The type of oxygen delivery system you will have has to take into account: * Your oxygen therapy – how often, is it continuous? *The amount of oxygen you receive. * The type of activities you have.It is a good idea that both you and your doctor define together the type of oxygen system you will use – his expertise and your own knowledge of your activity levels. Once you begin to receive oxygen through a particular oxygen delivery system, or as is generally the case, combination of systems, you adjust and get used to that system (including make and model) which is good news. The bad news is that once you are used to it, it is difficult to change. So it is best to get it right and to do this, both you and your doctor have to work together.There are only three different types of oxygen delivery systems, two of these store it. (The three systems have both home based and portable alternatives).1. Portable Oxygen Concentrators – An oxygen concentrator is a machine, electrically powered, that extracts oxygen from ambient air, concentrates it at 100% and then delivers it to the patient either though a cannula or an oxygen mask (much like the other systems). The portable ones are smaller and lighter.  As they are electrically powered this is by plugging into the wall socket (or car lighter adapter), as well as with rechargeable batteries.  This versatility is making them very popular with the additional advantage that most brands are looking to increase the battery duration.  2. Portable Oxygen Cylinders – Perhaps the oldest type of oxygen delivery system. Pure oxygen is compressed and stored in aluminum cylinders. These cylinders come in various sizes (from 4 to 8.5 lbs in weight). Again the stored oxygen will last depending on the amount of oxygen that is delivered, but a general rule of thumb is that they last for shorter periods of time compared to the other systems. Note: Oxygen cylinders are refillable.3. Portable Liquid Oxygen Tanks – Oxygen has the physical property of turning liquid at lower temperatures. Liquid oxygen tanks keep a reservoir of liquid oxygen (which by the way means a much greater amount of oxygen is stored than if kept in its gaseous state), which is then delivered at the appropriate setting as a gas (obviously the tank has a gas small gas storage part). There small units available that can deliver oxygen for many hours.

Why are car parts suppliers called motor factors?

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Why are car parts suppliers called motor factors? Seems a peculiar name for businesses supplying and delivering car parts…..

chevy k5 blazer open headers

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The new hooker headers on my 330 hp gm crate motor 350.

Car Breaks?

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Hi, I have a nissan micra 93.
One minute my breaks are fine, the next they are bad.
I have now brought it too the garage but what I want to know is what would cause the breaks to be ok and then bad.
Has anyone ever experianced this with a micra or any car… Please tell!!!
Really sorry, What I mean is slow. they dont stop as normally!
no they dont pull to one side..
fluid is fine, so it cant be that either

Pass4side 70-351 Exam Resources


image70-351 ExamTS: MS Internet Security & Acceleration Serv 2006, ConfiguringExam Number/Code : 70-351Exam Name : TS: MS Internet Security & Acceleration Serv 2006, ConfiguringQuestions and Answers : 48 Q&As Pass4side 70-351 Exam Resources include Questions and Answers, Practice Testing Software, Stud Guides, Audio Learning and Preparation Labs. These Microsoft 70-351 Exam Preparation Materials will make you provide the accurate answers of real 70-351 exam questions. With our Exam Resources you can test your knowledge and readiness for exam, assess your performance in a given time, get scores and highlighted weaknesses with suggestions to improve the weak areas. We update our Microsoft 70-351 Study Guide as soon as the Exam Objectives change. Our Certified Experts and Professionals prepare this Microsoft 70-351 Study Guide for you combining all the knowledge and keeping in view the latest Microsoft 70-351 Exam Objectives. Your success is guaranteed in Microsoft 70-351 Exam using our Study Guide because you always get the latest and most accurate Microsoft 70-351 Study Guide for us. Try our Microsoft 70-351 Study Guide today. Our Microsoft 70-351 braindumps is updated regularly with the changing Microsoft 70-351 Exam Objectives. You can be sure of downloading the latest and the most accurate Microsoft 70-351 braindumps from us. We offer economical package for Microsoft 70-351 exam questions with free updates. Try our Microsoft 70-351 exam questions today and succeed in your Microsoft 70-351 Exam. choose Pass4side 70-351 braindumps After you purchase our product, we will offer free update in time for 90 daysQuality and Value for the 70-351 Exam100% Guarantee to Pass Your 70-351 ExamDownloadable, Interactive 70-351 Testing enginesVerified Answers Researched by Industry ExpertsDrag and Drop questions as experienced in the Actual ExamsPractice Test Questions accompanied by exhibitsOur Practice Test Questions are backed by our 100% MONEY BACK GUARANTEE. In Pass4side you can find more IT certification:70-577 exam,70-565 exam,70-562 exam and 70-554CSharp exam and so on.

Drag racing engines are known to go over 200 mph on 6 seconds. So why are lamborghinis and Ferraris considered

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Fastest Lamborghini top speed= 219mph
fastest ferrari top speed =225mph
Drag racing = 300+mph

Normal Mitsubishi Dealer Says Asx Will Fit Great In Mitsubishi's Lineup

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imageIt’s great to see automakers getting in on the crossover trend. To be honest, I was getting a little sick of having to compete for lane space with enormous SUVs, and it was about time manufacturers started phasing them out. You know the kind I’m talking about; you’re driving down a narrow four-lane highway, and suddenly you’re trying to get around a huge truck. The truck’s side rail is just hanging over the dashed white line, giving you just enough space to eke through without clipping the guard rail. It’s not the truck’s fault inherently, but there are a lot of drivers out there that just can’t handle the size and power of an SUV.
Your Normal Mitsubishi dealer is gearing up to release a nice little crossover that will help the consumer public’s easy transition to bigger cars on sedan platforms. This March, Mitsubishi plans to unveil the brand new ASX crossover at the Geneva Motor Show, a European version of the Japanese market RVR. As a compact crossover, the ASX is a five-seater that measures about 4.3 meters in length, coming in just below the Outlander in the Mitsubishi lineup of high-performing, dependable vehicles. Bloomington IL car dealers are revving their engines in anticipation of the vehicle launch.
While we don’t know much yet about the new ASX, we do know that the car will ride on a 1.8-liter turbocharged direct-injection petrol/gasoline engine, complemented nicely by a six-speed manual transmission. The ASX is based on the Concept-cX, which featured a diesel engine, but thus far there has been no talk from Mitsubishi regarding the possibility of putting the engine in the ASX. Staffers at your Normal car dealer are excited to check out preview photos of the ASX from the Geneva Car Show. They are also excited to find out if the ASX will offer an available all-wheel drive option.
The ASX will roll out in European markets in the near future (in the spring, to be specific), so we will have to see the car fares over there before we get any more details about the U.S. launch. Still, your Normal Mitsubishi dealer is excited to get those details. The RVR will hit the market in Japan this month, which should also help Mitsubishi collect some data on how to market the vehicle in the states. Until then, Bloomington IL car dealers will just have to be patient and await the coming launch of the crossover.
While your Normal car dealer is gearing up for the launch of the ASX, you can still take a look at some of the awesome crossovers flooding the market. Over the past couple of years, the industry has made a conscious shift towards smaller, more fuel efficient cars, and crossovers have made a great platform for bigger families and drivers in need of cargo room to make the switchover. As the industry continues to shift, look to automotive leaders like Mitsubishi to lead the charge into the 21st century and beyond.

Hulk Hogan Chasing Pirates on a Pantera Offshore Powerboat

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Thunder in paradise with Hulk Hogan chasing pirates on a Pantera 28 offshore Powerboat with a high performance engine. The hulk is driving a canopied scarab with an unusual cockpit. Lot of other funny things to watch for in this flash back. Pantera brand boats go back to 1974 and even on Miami’s famous thunderboat row with Don Aronow, apache boats, cigarette powerboats and others. Please visit our company home page to see more pictures of our 35 year history of racing and boat building at We also have a small owners gallery and some great photos there.

Vw Performance Parts – Engine Upgrades

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imageIf you’re like me you want your car to go faster. There are a few easy ways to get more “fast” out of your volkswagen. Depending on what type of VW you have the selection of parts available to you will vary wildly. There are a lot of people out there tuning their Golf/GTI but obviously there are a lot fewer Toureg parts out there.There is a large community of VW tuners out there and visiting the forums where these people hang out is a very good idea. They can give you an idea of what to expect out of various aftermarket parts. If the part exists the chances are good that someone on these forums has tried it out and written about it. This may sound silly but a couple of the best things you can do to make sure your car is running its best is to get your car a tune up and an oil change. Adding performance parts to a car that isn’t already running its best isn’t going to be nearly as effective. Another important but overlooked thing is making sure your tires are properly inflated. This can improve the handling of your VW as well as ensure you’re getting optimum gas mileage. Once these basic steps have been completed there’s a few other things you can do to upgrade your ride.Engine / Power Upgrades1) Upgrade your intake. This can be as simple as making sure your current air filter is clean. The more air your engne can get the better it will run. The next easiest option is to install a high performance air filter that replaces the stock one. These provide better air flow which should increase engine power slightly. The next step after that would be to install a complete aftermarket intake system. Cold Air Intakes draw cool air from outside the engine compartment rather than regular systems which suck in hot air from around your engine. Most of these systems are fairly easy to install and can be done yourself in a few hours or less. An aftermarket intake can cost anywhere from $50 all the way up to $300.2) Upgrade your headers: The headers and downpipe is where the exhaust first leaves your engine on its way toward the atmosphere. Higher performance headers allow more exhaust fumes to escape, which can give a dramatic increase to horsepower. Aftermarket header prices can range from a couple hundred dollars to well over $1000 depending on what type of vehicle you have and what brand you choose. One thing to look out for is that cheaper headers tend to have fitment issues (you can’t get them to line up correctly for a simple bolt-on installation), and they may have resonance issues. Resonance is caused by the exhaust vibrating the metal and will create a noise that bothers most people. Headers can be installed yourself if you’re experienced enough.3) Catback exhaust: These exhaust systems start where the headers end. They connect to the Catalytic converter and replace the entire exhaust system to the back of the car. Depending on how free flowing the stock exhaust is on your car this may be one of the last upgrades you choose to do. These exhaust systems aren’t cheap and may require welding and/or professional installation. They usually give your car a higher performance sound over the stock setup. It is also possible to just replace the mufflers if all you care about is the sound.4) Tires. Probably the most overlooked performance enhancement you can do for your car is to replace the tires. Adding lots of engine power won’t do you any good if you can’t get that power to the pavement. Replacing your tires with a wider tire or tires with a stickier compound will help you get more traction. Choosing tires is usually a compromise between Performance, Ride Comfort, and Tread Life. High performance tires don’t last as long as regular ones. High performance tires can cost quite a bit of money too.5) Underdrive Pulleys. You can reclaim some lost power from your engine by installing a lightweight crank pulley. These are made of aluminum and tend to weigh several times less than the stock ones they replace. Underdrive pulleys are slightly smaller than the stock ones, which means they turn the accessories they operate at a slightly lower speed. This isn’t a problem for most people unless they have a huge stereo system. These pulleys are usually less than a couple hundred dollars, and can be installed yourself. You will need a breaker bar to get the old one off, and a serious torque wrench to attach the new one. The last thing you want is the pulley coming off while you’re driving down the freeway!6) Turbochargers. If you have lots of money and are serious about upgrading your car a turbo kit might be what you need. Turbos use the exhaust from your engine to spin a turbine, which forces air into your engine. This pressurizes the air and improves horsepower dramatically. These are not very likely to be something you would install yourself. They also may require other modifications to your car, so the cost is out of reach for most people.I hope you’ve learned some of the basics of how you can upgrade your VW to get better performance out of it. Just remember to do your research before making a purchase, as there are a lot of products out there attempting to scam people like us.

useing hho gas instead of natural gas for cars that run on natural gas?

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they have cars that run on natural gas. would it work if you filled it with hho gas?
of and which is more flammable?


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