Also wildly inaccurate. Borrow a mate's GPS and compare.
Heed your own advice, troll.
--
aioe.org, Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages.
If you have broadband, your ISP may have a NNTP news server included in your account:
There are two kinds of people on this earth: The crazy, and the insane. The first sign of insanity is denying that you're crazy.
Why do you call someone a troll because their opinion differs to yours, ignoramus?
ignoramus?
While you continue to call people names who expose your lies and ignorance.
--
aioe.org, Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages.
If you have broadband, your ISP may have a NNTP news server included in your account:
There are two kinds of people on this earth: The crazy, and the insane. The first sign of insanity is denying that you're crazy.
I've got a GPS and the speedometer reads slightly high as all of them do.
[plonk]
The GPS will probably give a slower speed reading than the true reading if you are driving in anything other than a straight line, since it only samples positions at discrete intervals and might just use linear interpolation to work out a path between the positions for estimating distance travelled.
Cheers, Nicholas Sherlock
-----------------
-----------------
ignoramus?
I have not lied on this group. Point out the proof.
Exactly what I said.
Mine doesn't do that. Perhaps the intervals are so close togehter it doesn't matter. If I walk along the street with it, it can tell the difference betwen two points a metre apart.
In message , Peter Hucker writes
Almost all are now electronic, derived from the ABS sensor. Even my 10 year old people carrier is but the speedo is still inaccurate, over-reading by 10% at 70MPH. And before Mr Terrell chips in, it's an American made vehicle owned by a Brit.
Which is tiny providing you're not running on flat tyres. Calibration is another matter entirely, the speedo on the car I got rid of four months ago (which was 4 years old) had a distinct 'bump' in the calibration around 70MPH which meant that at 65MPH it was almost spot on, by 70MPH it was 8MPH over and by 85MPH it was again almost spot on.
To put to bed the stories about GPS being inaccurate;
Specifically section 5 on page 8. Conclusion, GPS is 10 times more accurate than the average speedometer. Even on a non-straight course.
is
sI don't see why they should be inaccurate at all if derived from an ABS = sensor. Those things produce about 40 pulses per revolution of the whee= l. All the computer needs to know is the circumference of the tyre and = the number of teeth on the pickup wheel.
they are headed to a different country?
If they can't do the simple math to design an accurate speedometer, the rest of the car won't be any better. If a critical safety component is crap, the whole vehicle is. Next, you'll try to convince me that Lucas made the best automotive electrical components in the world.
they are headed to a different country?
It is not a critical safety component. Even if you insist that exceeding the speed limit automatically makes you have an accident, they always OVERread, hence if you sit the needle on the limit, you are not speeding.
In message , Peter Hucker writes
I agree entirely, they should be accurate providing you've not done something stupid like fitting different size wheels but the speedo on the car I have just got rid of had a definite 'bump' in the calibration which I can only assume was put there on purpose because I can think of no other reason for it to go non-linear.
What is the final output stage? Is it a moving coil meter? Perhaps it was just sticky?
In message , Peter Hucker writes
No, it was a company car and it was repeatable across several of my colleagues cars. I *think* it was a stepper motor but I don't know and wouldn't want to say for definite.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required