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A speedometer is a device that measures the instantaneous speed of a land vehicle.

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Blogs for Speedometer

Speedometer " Australian Car Advice | News Blog

Traditional automotive speedometers are driven by a flexible, ... The speedometer itself is two rotating, barrel ... The speedometer mechanism often also ...www.caradvice.com.au/172/speedometer/

Places 2 Ride Blog: Cateye Speedometer for Dirt Bikes

Places 2 Ride Blog: Cateye Speedometer for Dirt Bikes | Motorcycle articles, news, events, gear ... Our blog features motorcycling news, notable riding ...blog.places2ride.com/2002/04/article-cateye-speedometer-for-...

TM Net Cheated people on speedometer at blog.kuchingfest.com

Significant ... Pierce on TM Net Cheated people on speedometer. Pierce on TM Net & VADS shit on ... just realised that the speedometer will only allow a connection ...blog.kuchingfest.com/2007/04/17/tm-net-cheated-people-on-spe...

AdaptA solutions - speedOmeter

speedOmeter ... 04Weather component for your site or BLOG. 05Free Weather Portal meteo-si. Pause ... Add Live Weather component to Your Web Site or BLOG. New Gadgets! ...www.adapta-solutions.com/solutions/speedometer.html

Aric's Herbie The Love Bug Blog: A 200MPH speedometer

Arics Herbie Blog follows the restoration of a 1963 Beetle to a very accurate ... Herbie Fully Loaded introduced the idea of a 200MPH speedometer. ...aricsherbie.blogspot.com/2007/02/200mph-speedometer.html

Wikipedia About Speedometer

Speedo.gif

A speedometer is a device that measures the instantaneous speed of a land vehicle.

Now universally fitted to motor vehicles, they started to be available as options in the 1900s, and as standard equipment from about 1910 onwards.

Speedometers for other vehicles have specific names and use other means of sensing speed. For a boat, this is a pit log. For an aircraft, this is an airspeed indicator.

The speedometer was invented by the Croatian Josip Belušić in 1888, and was originally called a velocimeter.

Eddy current

VW%20Passat%20Tacho.JPG

The eddy-current speedometer has been used for over a century and is still in widespread use. Until the 1980s and the appearance of electronic speedometers it was the only type commonly used.

Originally patented by a German, Otto Schulze on 7 October 1902, it uses a rotating flexible cable usually driven by gearing linked to the tail shaft (output) of the vehicle's transmission. The early Volkswagen Beetle and many motorcycles, however, use a cable driven from a front wheel.

A small permanent magnet affixed to the rotating cable interacts with a small aluminum cup (called a speedcup) attached to the shaft of the pointer on the analogue instrument. As the magnet rotates near the cup, the changing magnetic field produces eddy currents in the cup, which themselves produce another magnetic field. The effect is that the magnet "drags" the cup, and thus the speedometer pointer, in the direction of its rotation with no mechanical connection between them.

The pointer shaft is held toward zero by a fine spring. The torque on the cup increases with the speed of rotation of the magnet (which, recall, is driven by the car's transmission.) Thus an increase in the speed of the car will twist the cup and speedometer pointer against the spring. When the torque due to the eddy currents in the cup equals that provided by the spring on the pointer shaft, the pointer will remain motionless and pointing to the appropriate number on the speedometer's dial.

The return spring is calibrated such that a given revolution speed of the cable corresponds to a specific speed indication on the speedometer. This calibration must take into account several factors, including ratios of the tailshaft gears that drive the flexible cable, the final drive ratio in the differential, and the diameter of the driven tires. The speedometer mechanism often also drives an odometer plus a small switch that sends pulses to the vehicle's engine computer.

Electronic

Many modern speedometers are electronic. A rotation sensor, usually mounted on the rear of the transmission, delivers a series of electronic pulses whose frequency corresponds to the rotational speed of the driveshaft. The sensor is typically a toothed metal disk positioned between a coil and a magnetic field sensor. As the disk turns, the teeth pass between the two, each time producing a pulse in the sensor as they affect the strength of the magnetic field it is measuring.

Search results for Speedometer

HowStuffWorks "How Speedometers Work"

A speedometer is a dashboard instrument that indicates how fast a car is moving. ... TreeHugger.com: Econo-Nag Speedometer ... of Speedometer Design. Lots ...auto.howstuffworks.com/speedometer.htm

speedometer: Definition from Answers.com

speedometer n. An instrument for indicating speed. An instrument for indicating distance traveled as ... A speedometer is a device used to measure the ...www.answers.com/topic/speedometer

Howstuffworks "How Speedometers Work"

A speedometer is a dashboard instrument that indicates how fast a car is moving. ... How does a speedometer in an airplane work? How Odometers Work. How Fuel ...auto.howstuffworks.com/speedometer.htm/printable

SPEEDOMETER PLUS - Speedometers, gauges,clocks,tachometers REPAIR ...

Speedometers,gauges,clocks - repair and sales (VDO speedos,gauges,clocks,tachometers,speedo cables... CONVERT YOUR SPEEDOMETER TO 140 MPH ...www.speedometerplus.com/default.htm

Speedometer Gear, Ratio Adapter, Speedometer Cable, Speedometer Gears

The following speedometer drive gears and driven gears are available for the ... Look at the bottom of the speedometer face for the numbers 940, 960, 1000, or 1020. ...www.partshp.com/speedometer_gears.htm

Images found for Speedometer

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News about Speedometer

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The Daily & Sunday Review2009 Scion XD By Greg Zyla Base Price: $15,350 Price As Tested: $17,358 This week, we’re driving the 2009 Scion XD, a five-door, five-passenger sub compact that is high on quality and versatility yet low on price. Scions come in three distinct flavors, including a sporty two-door coupe TC, youth market-bred XB and family-oriented XD.http://www.thedailyreview.com/articles/2009/05/10/sports/tw_...

Motoring: Mercedes E-class coupé

IndependentConversation was flowing well. Mercedes design director Karl-Heinz Bauer – you could identify him by the frock coat and the grey ponytail – was talking about the way Mercedes-Benzes have had to change.http://www.independent.co.uk/life-style/motoring/road-tests/...

Take care when changing tire size

New London DayQuestion: I'm almost ready for a new set of tires on my pickup and am considering going to larger tires, mostly for a sturdier appearance.http://www.theday.com/re.aspx?re=92b4b2af-a8f7-41d1-87e5-7b6...

You can't play fast and loose with speed

u.tvDavid Mitchell: Why are motorists, who've been convicted of something they knew to be illegal and which they don't deny, suffered to whinge?http://u.tv/News/You-cant-play-fast-and-loose-with-speed/38d...

Just off the streets of Tokyo: The Nissan Cube

The Canton RepositoryThe 2009 Nissan Cube arriving in U.S. dealerships next month has the tall, narrow, boxy shape and quirky touches of Japanese vehicles that maximize interior space while sharing narrow roads in a congested Asian city.http://www.cantonrep.com/lifestyle/x2133278364/Just-off-the-...

News about Speedometer

Small wonder: The mighty Mini celebrates 50 years

The IndependentBut every time I glanced at the great big Smiths speedometer in the middle of the 'dash' (there were no other instruments), I knew I was driving around in yesterday's story. And it did let me down rather a lot. Yet, difficult as it was to ... http://www.independent.co.uk/life-style/motoring/features/sm...

Buick has popping noise coming from front end

Independent RecordI am having trouble with the gas gauge and speedometer. I can be driving along and looking down at the gas gauge it creeps up to full and beyond. The speedometer sometimes goes up to 140 mph and beyond no matter what my speed. Sometimes they both act ... http://www.helenair.com/articles/2009/05/09/weekly_features/...

Frank Mulligan: Riddles wrapped inside mysterious enigmas

EnterpriseWhy does your car’s speedometer go up to 120 mph? - Why do dogs like a ride in the car while cats don’t? - Why do certain sayings become popular and stick in our consciousness, like “fall by the wayside” while others, well, “fall by the ... http://www.enterprisenews.com/lifestyle/columnists/x84556581...

2010 Toyota Prius Review

The Auto ChanelThere’s a multi-information display at the top center of the dash that has the speedometer and all information. My co-driver and I felt there was too much information from this display. Personally, I would have preferred a speedometer and turn ... http://www.theautochannel.com/F/news/2009/05/03/459202.html

The flip side of Nano

Economic TimesThat means one windscreen wiper, a single, centrally-mounted speedometer on the dashboard, only a driver's side wing mirror and a solitary right-hand switch for the indicators and lights. Watch out 10 possible drawbacks of Nano..... Courtsey ... http://economictimes.indiatimes.com/articleshowpics/4339665....

Search results for Speedometer

speedometer - Definition of speedometer at YourDictionary.com

noun. a device, often combined with an odometer, attached to a motor vehicle, etc. to indicate speed, as in miles per hour: it is usually connected to the transmission by a ... http://www.yourdictionary.com/speedometer

McAfee.com - Internet Connection Speedometer

McAfee.com Online Applications. Learn about or get to all of our online application services here.http://promos.mcafee.com/speedometer/test_0600.asp

Speedometer Repair and Replacement - Speedometer Services

Speedometer repair work is Speedometer Services expertise they are equipped to handle all your instrumentation needs and Speedometer Services feels it is always important to ... http://www.speedometerservices.com/

SpeedoMeter

works offline, no ads, loads faster) This site helps to calculate the average velocity over a given distance. Use this to measure e.g. your walking and running speed or to ... http://speedometer.speedymarks.com/

speedometer definition of speedometer in the Free Online Encyclopedia.

speedometer, instrument that indicates speed. A cable from an automotive speedometer is attached to the rear of the transmission of an automobile; the cable turns at a rate ... http://encyclopedia2.thefreedictionary.com/speedometer

Wikipedia results for Speedometer

Speedometer - Wikipedia, the free encyclopedia

A speedometer is a device that measures the instantaneous speed of a land vehicle. Now universally fitted to motor vehicles, they started to be available as options in the 1900s ... http://en.wikipedia.org/wiki/Speedometer

Electronic instrument cluster - Wikipedia, the free encyclopedia

In an automobile, an electronic instrument cluster, digital instrument panel or digital dash for short, is a set of instrumentation, including the speedometer, that is displayed ... http://en.wikipedia.org/wiki/Digital_speedometer

Motor-vehicle inspection (Japan) - Wikipedia, the free encyclopedia

The speedometer of the car will be tested by driving up on to a dynamometer. The vehicle will be propelled to 40 km/h twice and the vehicle's engine rev amount will be recorded ... http://en.wikipedia.org/wiki/Shaken

Honda Magna - Wikipedia, the free encyclopedia

Magna V45 VF750C (1982-1986) The first generation 1982 Honda V45 Magna was available in either Candy Maroon or Candy Imperial Blue. [1] The headlight and fenders are chrome.http://en.wikipedia.org/wiki/Honda_Magna

Edsel - Wikipedia, the free encyclopedia

It included several innovative features, among which were its "rolling dome" speedometer and its Teletouch transmission shifting system in the center of the steering wheel.http://en.wikipedia.org/wiki/Edsel
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Videos found for Speedometer

Lamborghini Gallardo Speedometer

Lamborghini Gallardo SpeedometerFookin fast! Somewhere on the M6 in the depths of the night! Watch the speedo slow first at a bend in the road then as passing two lorries.Flash - Video

Audi RS4 speedometer

Audi RS4 speedometerSpeedometer of B7 Audi RS4: impressive acceleration, 420bhp vs. the damn limiterFlash - Video

20-125 Speedometer view 2002 Z28

20-125 Speedometer view 2002 Z28theBlackWidow going from 20-125.. spun through first. (cold weather) sorry its shaky, road was very hilly. haFlash - Video

Chrome Scale with Speedometer Dial

Chrome Scale with Speedometer Dialvideo review of glass weighing scaleFlash - Video

Even More Speedometer...

Even More Speedometer...Even More Speedometer...Flash - Video

Answers for Speedometer

guitarplayer574Speedometer?guitarplayer574disconnect the speedometer from the wire/ cable depending if it is a electronic one, or a mechanical one, see if it goes back down to zero. if it does, then your speedometer is fine, and look at the c...Josh DMy speedometer pegs out as soon as i start to move and it seems like the transmission sicks in 4th?Josh DIts going to be inside the transmission. It has sensors in there that control the speed -o-meter. You will have to have them changed at a shop. Its not for some one with out experience to try on their...dragonblood_devinHow do I convert a manual speedometer from a 700r4 to an electronic speed sensor ?dragonblood_devinI'm not sure how you would do that. The manual speedometer works on a gear from your transmission and if you have an electronic speedometer, I would suspect that you would need some type of electroni...Skip GHow does a speedometer work and why would it stop working after a fuel pump malfunction?Skip Ghey neighbor. I`m from albuquerque. well first, what year is your truck? newer chevy trucks are having a big problem with the instrument clusters going bad. before you take the truck to be diagnosed,...Monica SHow is the speedometer in a 97 Saturn driven?Monica SThat be sensor controlled and it could just be a dirty sensor , usually their on the transmissions in most vehicles.Keep in mind the problem that the TCM= transmission module also controls the speedo ...
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