Pressure Gauge
Posted: Thu Dec 23, 2010 1:58 pm
For the successful driving in the desert are generally needed three components:
On the market are mostly pressure gauges from supermarkets priced around 5 Dhs. I saw some digital as well. Stick pressure gauges are showing the values dependant, how much dust and sand is inside the tube... All those are just useless, with the total range is coming up to 200 psi, when you want to measure just 15 psi; what you see as your reading could be actually 20 psi or even more; they are not enough accurate. Your red arrow is somewhere close to 0 at reading.
If you want to get the right pressure gauge, try to find something in specialized shops with off-road toys, where the total range shall not exceed 60 psi.
You can compare reading of your gauge with some petrol stations, which have digital measurement for filling air into tyres and take the value of their reading as a reference point. The deviation (in psi) gives you an indication how your gauge reading is different, how many psi. Then next time, as your will deflate your tyres in desert, you may be very close to the value that you need. To compare the pressure with your buddy's gauge can lead also to certain inaccuracy, as his gauge might be also from supermarket :060:
What is the right pressure for your tyres? Is it 15, 20 or 10 psi? This is again very individual, it depends on the brand and size of the tyres your are using and also on the total weight of your car. The best method would be to drive (with full power) some long steep dune and mark, how far up you can come. After first test, deflate your tyres by 2 psi and drive same place again, with the same power. If your performance increases with reduced pressure, then you are on the right way to determine the right pressure for your tyres and car. Just drive with your buddies and see how many times you get stuck or left behind.
Have Fun ! :051:
- Driver (skills & experience)
- Car (overall conditions, power, torque, etc.
- Tyres (conditions & pressure)
On the market are mostly pressure gauges from supermarkets priced around 5 Dhs. I saw some digital as well. Stick pressure gauges are showing the values dependant, how much dust and sand is inside the tube... All those are just useless, with the total range is coming up to 200 psi, when you want to measure just 15 psi; what you see as your reading could be actually 20 psi or even more; they are not enough accurate. Your red arrow is somewhere close to 0 at reading.
If you want to get the right pressure gauge, try to find something in specialized shops with off-road toys, where the total range shall not exceed 60 psi.
You can compare reading of your gauge with some petrol stations, which have digital measurement for filling air into tyres and take the value of their reading as a reference point. The deviation (in psi) gives you an indication how your gauge reading is different, how many psi. Then next time, as your will deflate your tyres in desert, you may be very close to the value that you need. To compare the pressure with your buddy's gauge can lead also to certain inaccuracy, as his gauge might be also from supermarket :060:
What is the right pressure for your tyres? Is it 15, 20 or 10 psi? This is again very individual, it depends on the brand and size of the tyres your are using and also on the total weight of your car. The best method would be to drive (with full power) some long steep dune and mark, how far up you can come. After first test, deflate your tyres by 2 psi and drive same place again, with the same power. If your performance increases with reduced pressure, then you are on the right way to determine the right pressure for your tyres and car. Just drive with your buddies and see how many times you get stuck or left behind.
Have Fun ! :051: