Betulkah Speedometer LC135 (Old model) tidak boleh dipercayai...mari kita fikirkan..
- Thread starter kimie
- Start date
kimie
Veteran
salam semua,just nak share info saja...
How Does a Speedometer Work?
By John Clifton
There are different types of speedometers, like the old mechanical speedometer and the current electronic speedometer. Both of these have a different method to calculate speed.
Speed measurement is performed in your transmission, because that's where gears rotate at specific speeds and specific intervals according to the speed of your car. From the time speedometers first appeared in cars, designers realized that if they could tell how many times a specific gear rotated and calculate how that corresponded to the speed of the car, they could create a speed meter to measure how fast the car was going. Over the years, these devices have gotten more elaborate and electronic, but the transmission measuring concept remains the same.
Different Types of Speedometers
Here are some different types of speedometers.
Mechanical Speedometer - The mechanical speed-o-meter used a cable attached to a gear found in the transmission. When the gear rotated 1,000 times (usually), the meter on your dashboard was determined by a magnet. This worked because the revolving magnet rotated around a non-magnetic speed "cup", which produced a magnetic field. The magnetic field manipulated a pointer, which would point at the correct speed on your speedometer.
Digital Speedometer - The digital speedometer that is so common today works with the use of a microprocessor. There is a speed sensor in your transmission which keeps track of your speed. This sensor transmits a signal to the speedometer's microprocessor. The computer memory would send a signal to a circuit in the electronic display and this displays the digital numbers which correspond with the speed you are traveling.
Quartz Speedometer - Another type of speedometer is the quartz crystal speed counter. A magnet in your transmission generates a signal which is processed by an electronic circuit and sent to either a quartz speedometer or a digital speedometer in your car's dash.
How Accurate Are Speedometers?
How accurate are speedometers? Well in fact peedometers are not always entirely accurate. In fact, speedometers have a deviation of up to 10% of the speed measured. That's for a number of reasons, particularly tied to the diameter variations in your car's tires. If your car's tires have low pressure or they are not adhering to standards due to the size of the load you are carrying or because of the temperature of the day (expanding or contracting the size of the tire), then the number of times the tires go around may not correspond to the transmission gear which is being tested. This can throw off speedometer calculations easily.
Therefore, I wouldn't recommend that you simply assume your speedometer is always right. If you're in a speed zone, don't push your car's speed up to the limit of what you think is acceptable for local law enforcement, because tire pressure or some other factor might push your speed limit over the local accepted speeds.
kimie
Veteran
Bagaimana sesuatu speedometer itu bekerja?
By John Clifton
Terdapat 2 jenis speedometer,diantaranya speedometer mekanikal(analog) dan elektronik speedometer(digital)
Perbezaan type speedometer
Mekanikal speedometer – Sejenis meter yg menggunakan kabel sebagai perantaraan diantara meter dengan rim/tyre.apabila tayar berpusing maka kabel juga akan berputar.apabila kabel berputar maka ia akan membolehkan meter itu menunjukkan bacaan pd skala tertentu.setiap putaran tayar + kabel akan memberi kesan pd magnet yg terdapat didlm meter tersebut.setiap kelajuan jarum meter adalah dikawal oleh magnet yg terdapat dlm meter itu.
Digital speedometer – Sejenis meter yg mempunyai keupayaan menunjukkan bacaan.Pd kebiasaannya meter jenis ini dikawal dgn menggunakan microprocessor(elektronik komponen).transmiter yg digunakan adalah sensor.sensor akan memberikan signal kpd microprocessor dan microprocessor lah yg akan menentukan bacaan pd meter tersebut.
Bagaimana sesuatu speedometer itu mempunyai ralat atau tidak(error)
Pd kebiasaannya sesuatu speedometer tidak lah begitu tepat.ia mempunyai ralat diantara 10% drpd kelajuan sebenar.ini adalah disebabkan factor tayar yg digunakan.angin tayar berkurangan atau tayar tidak standard drpd yg asal ataupun disebabkan factor cuaca semasa adalah merupakan punca/kesan utama dan menyebabkan speedometer tidak tepat drpd kelajuan sebenar.Faktor2 seperti diatas akan memberikan ralat/error +- pd meter tersebut.oleh itu,saya tidak menggalakkan kpd anda semua dengan menyatakan speedometer kita itu sentiasa tepat.
Ini adalah speedometer utk kereta.Cuma info sahaja
Dr
kimie
By John Clifton
Terdapat 2 jenis speedometer,diantaranya speedometer mekanikal(analog) dan elektronik speedometer(digital)
Perbezaan type speedometer
Mekanikal speedometer – Sejenis meter yg menggunakan kabel sebagai perantaraan diantara meter dengan rim/tyre.apabila tayar berpusing maka kabel juga akan berputar.apabila kabel berputar maka ia akan membolehkan meter itu menunjukkan bacaan pd skala tertentu.setiap putaran tayar + kabel akan memberi kesan pd magnet yg terdapat didlm meter tersebut.setiap kelajuan jarum meter adalah dikawal oleh magnet yg terdapat dlm meter itu.
Digital speedometer – Sejenis meter yg mempunyai keupayaan menunjukkan bacaan.Pd kebiasaannya meter jenis ini dikawal dgn menggunakan microprocessor(elektronik komponen).transmiter yg digunakan adalah sensor.sensor akan memberikan signal kpd microprocessor dan microprocessor lah yg akan menentukan bacaan pd meter tersebut.
Bagaimana sesuatu speedometer itu mempunyai ralat atau tidak(error)
Pd kebiasaannya sesuatu speedometer tidak lah begitu tepat.ia mempunyai ralat diantara 10% drpd kelajuan sebenar.ini adalah disebabkan factor tayar yg digunakan.angin tayar berkurangan atau tayar tidak standard drpd yg asal ataupun disebabkan factor cuaca semasa adalah merupakan punca/kesan utama dan menyebabkan speedometer tidak tepat drpd kelajuan sebenar.Faktor2 seperti diatas akan memberikan ralat/error +- pd meter tersebut.oleh itu,saya tidak menggalakkan kpd anda semua dengan menyatakan speedometer kita itu sentiasa tepat.
Ini adalah speedometer utk kereta.Cuma info sahaja
Dr
kimie
kamen rider x
Super Veteran
Beres... Hehehe
kamen rider x
Super Veteran
Boleh kekal tahan lama ke gne sensor tu kat mesin Lc kita smua ni erk? 
Maksud Kamen kot rider dlm ni smua bwk mesin macam ribut kan?? hahahahaha..
-Klau beskal mgkin tahan lama, ikat ketat leyh lekat lama sbb beskal tu x laju mne..
Klau mesin std pun ble speed laju2 dah gegar2, klau dah modi??? Ya Salam... hehehe..
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Maksud Kamen kot rider dlm ni smua bwk mesin macam ribut kan?? hahahahaha..
-Klau beskal mgkin tahan lama, ikat ketat leyh lekat lama sbb beskal tu x laju mne..
Klau mesin std pun ble speed laju2 dah gegar2, klau dah modi??? Ya Salam... hehehe..
-bro baper
bro baper arga adapter air 2....info skit camner nk masang natang alah 2...
adam_john99
Super Veteran
Yulite tolak rm320 tambah adapter rm 60...aku pasang sendiri jer bro....adapter masuk kat hos radiator blah kanan tue...yang hos slepas termostat...aku buang termostat kasi direct gak sbb enjin aku dah modi...tapi dok blakang uncle and phl la...hihihihi....
Kayang
Super Veteran
Dok blkg tu ertinya respect... Simpan throttle la katakan..
Ahmad Firhanuddin
New Member
Kalau enjin x modi nk pakai meter ni nk pasang air adaptor tu kt ne ea??
adam_john99
Super Veteran
stujuDok blkg tu ertinya respect... Simpan throttle la katakan..
adam_john99
Super Veteran
Bro...pasang adapter lepas thermostat.potong hos radiator n letak adapter antara hos tue....
Ahmad Firhanuddin
New Member
Ok guys thanx 4 da info..