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- Sep 26, 2009
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- 19,912
Dung Beetle 1000hp vs McLaren...Never wanted a VW more...
120+mph
517hp at the wheel.....
[Video]
Dung Beetle 1000hp vs McLaren...Never wanted a VW more...
120+mph
517hp at the wheel.....
[Video]
Like I've always said about smoking, I'm not addicted, I just like to do it.I have been dipping since the early 1950's. They warned me that it may be habit forming but I don't think I am addicted yet.
Suspect the "spring" is getting worn in your unit.I want to buy a good quality pressure gauge that is known for accuracy. Any suggestions...?
Actually I have already searched that very question about accurate tire gauges. Here is the top pick from most places.I had the same problem a few years ago while on a trip in Yuma AZ. My tire gauge registered much lower than the TPM system so I was questioning the TPM system on my Chevy pickup. I picked up a nail so I went to a tire shop for repairs. I told them that I thought the TPM system was way off. They informed me that the TPM systems are usually more accurate than hand held gauges.
I did a search in the web and found a digital gauge that was rated highly accurate. I don't recall the name but it cost me over $30. It works great and has been highly reliable for several years now and agrees well with my TPM system that reads out in PSI for each tire.
Do a search of the web and you should be able to find one that is accurate and doesn't put you in the (Poor House).
Hope that helps a little.
I guess the sensor has to me more precise with the lower range then with a larger range. It really all depends on what they are using for the sensor assembly. If it is the typical C type bourdon tube, I guess it has to be more precisely made and therefore the increase cost. OR, it could be just another way to sway folks to buy the more profitable item for them... IDKI find it interesting that on Amazon the 200PSI digital JACO ElitePro guage is $27.90 whereas the 60PSI digital JACO ElitePro guage is $29.90. Go figure!
The question is not how accurate the gauge is, but how accurate does the gauge need to be since the sensors don't actually measure tire pressure?I guess the sensor has to me more precise with the lower range then with a larger range. It really all depends on what they are using for the sensor assembly. If it is the typical C type bourdon tube, I guess it has to be more precisely made and therefore the increase cost. OR, it could be just another way to sway folks to buy the more profitable item for them... IDK
That's more information than I ever knew.The question is not how accurate the gauge is, but how accurate does the gauge need to be since the sensors don't actually measure tire pressure?
The sensors are looking for a differential between “stored” and “measured” values.
Storage mode: If the pressure is below 1.5 bar (21.75 psi), pressure is measured every 60 seconds but no data is sent. If the pressure increases above 1.5 bars, the component shifts into the Initial mode.
Initial mode: This mode occurs at power on or if the pressure increases above 1.5 bar from Storage mode. In this mode, pressure is measured every 0.85 seconds and data is sent every 0.85 seconds. This sequence is repeated 256 times. After the sequence is repeated 256 times, the device shifts into the Normal mode only if pressure is above 1.5 bar. If the pressures below 1.5 bar, the device will shift into the Storage mode.
Normal mode: Pressure is measured every 3.4 seconds and data is transmitted every 60 seconds. If the measured pressure differs by more than 200 mbar (2.9 psi) from the reference taken every 60 seconds, the device enters a pressure alert mode.
Systems are typically configured to “alarm” at +/- 25% of recommended air pressure.
Most don't understand the difference between accuracy and precision.That's more information than I ever knew.
In addition : accuracy is specified in two methods.
1. percentage of reading
2. percentage of full scale
The latter is not as accurate at lower readings in percentage.
Precision is not accuracy but does give you more information that may or may not be accurate. Digital gauges usually give you more precision. Analog gauges used to have mirrors behind the pointer to help one avoid parallax while reading.