SLEX radar vs speedometer reading

[thephantom]

James Deakin has just posted a video with his testing. https://www.facebook.com/james.deaki...type=3&theater

[jut703]

Do you know how we determined the accuracy of our speedometers in each everyone's car (different make). A simple method we always do. Drive and run in a convoy with only one takes the lead of the speed. The leader may run and maintain speed at 80kph and will not exceed. As we drove in convoy, ( in an expressway ) we glance and look at our speedometer points at that very same speed mark (80kph). It's fun, as we do it every year in a family field trip, or summer outing.

Let say 6 vehicles with different car makes, we all run at a speed of 80kph. All 5 vehicle match in each speedometer gauge, while the remaining 1, his gauge reads at 65kph while we are all running at the same speed. That means his speedometer gauge is out of specs calibration or faulty.

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Or, you know, just compare it with a GPS reading from your smartphone...

[Juan Martinez]

yes, very convenient. tried it this afternoon.

[rodetor]

Or, you know, just compare it with a GPS reading from your smartphone...

Pwede rin. Why not.

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[niky]

All 5 vehicle match in each speedometer gauge, while the remaining 1, his gauge reads at 65kph while we are all running at the same speed. That means his speedometer gauge is out of specs calibration or faulty.

If you're measuring heights, and one guy guesses he's five foot five, and you're all the same height... does that mean you really are all five foot five? (I've met guys shorter than me who claim to be five foot six... amusingly). You can't assume that because all the speedometers agree, they're correct. It can also mean they're off by the same amount. Again, almost all cars have speedometers that are exactly 5% fast.

Like jut says, only way to know for sure is to use a GPS-based measuring device, like a smartphone.

[ninjababez]

Tried waze and speedometer comparo earlier. Looks like 2-3 kph slower yung speedometer * speeds over 80-90kph. May lag lang ng konti yung sa waze (split second) reading, btw steady rpm and speed ko yun ginawa. (Obviously not an accurate measurement but a good basis din naman pala yung speedometer).

[Juan Martinez]

^ lest we forget, the discrepancy here is- 31 kph. and supposedly they got that thing only last April. 😟

[bryan19]

Yes tama 31kph un dagdag haha take note un may ari din ng volvo sabi niya un nag test daw slex sa 24 oras news flat daw un radar na gamit tapos sa tv patrol pinakita vertical so anu radar ba talaga ginamit. Haha
Nabasa ko lang sa comment niya dun sa video ni james

[welloiled29]

Keep it at 90km para safe

[shok]

Keep it at 90km para safe

E di 121Kph din ang basa ng SLEX radar dun. Huli pa din.

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Keep it at 90km para safe

E di 121Kph din ang basa ng SLEX radar dun. Huli pa din.