How Many Miles Has Your Scoob Done?
18 January 2003, 08:56 PM
#32
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72K , 98MY UK Turbo
had 41K on when I got it 2 years ago...
Never (new throttle linkage) missed (new disks all round, new SRS column) a (new inner cv) beat (new ball joint)....
I seem to have the same rear tyres and brake pads (all round!) as when I bought it !!!
Mark
had 41K on when I got it 2 years ago...
Never (new throttle linkage) missed (new disks all round, new SRS column) a (new inner cv) beat (new ball joint)....
I seem to have the same rear tyres and brake pads (all round!) as when I bought it !!!
Mark
18 January 2003, 10:48 PM
#35
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MY98 with 42k on the clock, i havnt got a clue if my speedo ect is correct as the damn thing is on the blink 
one second im doing 30mph the next im doing 140mph the next its off the clock and stays there 
im now a dab hand at taking the clocks out and "fixing it" though my fix only lasts a couple of weeks .
Andy
one second im doing 30mph the next im doing 140mph the next its off the clock and stays there im now a dab hand at taking the clocks out and "fixing it" though my fix only lasts a couple of weeks .
Andy
18 January 2003, 11:24 PM
#37
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Most GPS units are not /that/ accurate. I hooked up a GPS (without DGPS connected) to an external antenna today and checked it at various speeds. Whilst the GPS reads speed in 10th of a mile per hour indicating a certain confidence in accuracy, I would still trust my speedo more than the GPS.
It would be worth checking the number of satellites that your unit has acquired and their relative position to each other. If you have acquired 4 satellites but they are in the same area of the sky your readings will not be as accurate as 4 satellites spread between horizons.
If there is a page on your GPS that gives you the above information, there may also be an indicator for Dilution of Precision which is used to aid calculation of the Estimated Position Error.
The satellite signal strengths, DOP and EPE figures are continuously changing depending on terrain (bridges, trees etc). My lower DOP figures gave differences of 3% and when they were higher, about 10% which was more common.
I didn't have a DGPS unit available and my GPS (which is really an aviation unit) doesn't have Wide Area Augmentation System (WAAS) capability, so I couldn't use these to get more accuracy.
It would be worth checking the number of satellites that your unit has acquired and their relative position to each other. If you have acquired 4 satellites but they are in the same area of the sky your readings will not be as accurate as 4 satellites spread between horizons.
If there is a page on your GPS that gives you the above information, there may also be an indicator for Dilution of Precision which is used to aid calculation of the Estimated Position Error.
The satellite signal strengths, DOP and EPE figures are continuously changing depending on terrain (bridges, trees etc). My lower DOP figures gave differences of 3% and when they were higher, about 10% which was more common.
I didn't have a DGPS unit available and my GPS (which is really an aviation unit) doesn't have Wide Area Augmentation System (WAAS) capability, so I couldn't use these to get more accuracy.
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