MEMBUAT VESPA MELESAT CEPAT

Kendaraan yang berasal dari negeri itali ini terkenal kendaraan santai, namun hasil dari coba-coba orang yang iseng mampu membuat tenaga vespa melesit gesit. Inilah resepnya :

1. Lakukan pembesaran lubang isap dan coakan bandul askruk. Kikir lubang pemasukan ( 1 mm ). Hati hati membesarkan lubang buangnya, kikir kearah kiri dan kanan saja.

2. bubut permukaan silinder kop, hal ini untuk menaikan kompresi.

3. Buka magnitnya dan bubut bagian dalam kira kira 500 gram, tujuan agar putaran mesin manjadi ringan dan tenaga lebuh kuat. Caranya timbang dulu magnit lalu bubut sampai selisihnya 500 gram

4. Ganti piston dengan milik RX King yang jauh lebih Ringan, tujuan agar kerja mesin lebih efesien. Namun jangan lupa korek lubang isap dan lubang buang silinder blok untuk mengimbangi piston Rx King. Coakan bagian bawah blok juga di perbesar.

5. Ganti sepuyer yang lebih besar dengan ukuran 105-106 untuk mengimbangi pasokan bensin. Karena jika semua dipermak mesin akan haus bahan bakar.

6. Ganti koil dari 6 V ke 12 V dan platina harus orsinil, tujuan pada waktu gas di geber kebutuhan listrik tercukupi.

7. Knalpot bagian ujungnya di ubah bentuk yang lebih besar, agar pembuangan sisa pembakaran lebih lancar.


Apabila berhasil Kendaraan Vespa Anda akan Melesat Cepat. Terima Kasih

OIL MOTOR

WHAT DOES A 5W-30 DO THAT AN SAE 30 WON'T?

When you see a W on a viscosity rating it means that this oil viscosity has been tested at a Colder temperature. The numbers without the W are all tested at 210° F or 100° C which is considered an approximation of engine operating temperature. In other words, a SAE 30 motor oil is the same viscosity as a 10w-30 or 5W-30 at 210° (100° C). The difference is when the viscosity is tested at a much colder temperature. For example, a 5W-30 motor oil performs like a SAE 5 motor oil would perform at the cold temperature specified, but still has the SAE 30 viscosity at 210° F (100° C) which is engine operating temperature. This allows the engine to get quick oil flow when it is started cold verses dry running until lubricant either warms up sufficiently or is finally forced through the engine oil system. The advantages of a low W viscosity number is obvious. The quicker the oil flows cold, the less dry running. Less dry running means much less engine wear.

Obviously, cold temperature or W ratings are tested differently than regular SAE viscosity ratings. Simply put, these tests are done with a different temperature system. There is a scale for the W, or winter viscosity grades and, depending on which grade is selected, testing is done at different temperatures. See the Tables to the right below for more information.

If you look at the table, SAE Viscosity Chart (High Temp) you'll see that if a measured amount of motor oil flows through the viscometer at 210° F (100° C) faster than 5.6 but less than 9.3 seconds, then it will be considered a SAE 20 viscosity. Consequently, if a motor oil flows through faster than 9.3 and slower than 12.5 seconds, then it will be a SAE 30 viscosity.

Now if you look at the table labeled Winter or "W" Grades, you can get valuable information on how the W or winter grade viscosities are measured. Basically, as shown by the chart, when the oil is reduced to a colder temperature it is measured for performance factors. If it performs like a SAE 0 motor oil at the colder temperature, then it will receive the SAE 0W viscosity grade. Consequently, if the motor oil performs like a SAE 20 motor oil at the reduced temperatures (the scale varies - see the chart), then it will be a SAE 20W motor oil.

If a motor oil passes the cold temperature or W (winter grade) specification for a SAE 15W and at 210° F (100° C) flows through the viscometer like a SAE 40 motor oil, then the label will read 15W-40. Getting the picture? Consequently, if the motor oil performs like a SAE 5 motor oil on the reduced temperature scale and flows like a SAE 20 at 210° F (100° C), then this motor oil's label will read 5W-20. And so forth and so on!

I can't tell you how many times I have heard someone, usually an auto mechanic, say that they wouldn't use a 5W-30 motor oil because it is, "Too thin." Then they may use a 10W-30 or SAE 30 motor oil. At engine operating temperatures these oils are the same. The only time the 5W-30 oil is "thin" is at cold start up conditions where you need it to be "thin". thanks