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Author Speedo Accuracy (was 'Running in?')
Ian
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Registered: 28th Aug 99
Location: Liverpool
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9th Mar 05 at 01:59   View Garage View User's Profile U2U Member Reply With Quote
Not really, the Road Angel is accurate, and the speed cameras are very rarely set at exactly the limit anyway.
Nismo
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Registered: 12th Sep 02
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9th Mar 05 at 11:29   View User's Profile U2U Member Reply With Quote
isnt there a delay in teh signal to and from the satalite?
3CorsaMeal
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Registered: 11th Apr 02
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9th Mar 05 at 11:33   View User's Profile U2U Member Reply With Quote
how can people rely on a rotating needle to tell the truth about the about of forward motion u have?
Ditch
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Registered: 29th Nov 02
Location: St Albans Drives: JDM Celica GT4 WRC
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9th Mar 05 at 12:02   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Nismo
isnt there a delay in teh signal to and from the satalite?


yep, Tis quite a noticable delay if your accelerating or braking hard.
Ditch
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Location: St Albans Drives: JDM Celica GT4 WRC
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9th Mar 05 at 12:02   View User's Profile U2U Member Reply With Quote
Anyway, I sold Paul J a fake road angel 2 and the speeds its showing him are randomly generated numbers

HA!
3CorsaMeal
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Registered: 11th Apr 02
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9th Mar 05 at 12:04   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Ditch
Anyway, I sold Paul J a fake road angel 2 and the speeds its showing him are randomly generated numbers

HA!


:
Paul_J
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Registered: 6th Jun 02
Location: London
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9th Mar 05 at 13:45   View User's Profile U2U Member Reply With Quote
PMSL
Ian
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Registered: 28th Aug 99
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9th Mar 05 at 13:46   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Nismo
isnt there a delay in teh signal to and from the satalite?
There is but the individual data sentences are time stamped and you use the time on that not the time on your local device.

Basically if it says

1200 - 54.00, 03.00

in one sentence and

1203 - 54.01, 03.01

in the next you have the time and the ability to triangulate a distance. Makes no odds at all how long it takes the signal to reach you, apart from of course that if you slam on and the car is stopped it might still say you were doing 30mph 5 seconds ago, which was true.

Its not great for 0-60 runs and the like but speed testing either by maintaining a constant speed or scanning an entire log to find a peak are accurate.

[Edited on 09-03-2005 by Ian]
Eck
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Registered: 17th Apr 06
Location: Lundin Links, Fife
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11th Jan 07 at 15:25   View Garage View User's Profile U2U Member Reply With Quote
by any chance did it read 88mph at one point?
johnhara1
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Registered: 19th Oct 06
Location: Newcastle upon Tyne
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11th Jan 07 at 15:27   View User's Profile U2U Member Reply With Quote

I tested my XE corsa with road angel classic and at 30mph (clocks) i saw 26 on (road angel) and this continued upto 110mph staying 4mph all the way through the rev range with me keeping the car dead on 40, 50, 60 70 upto 110. I Havent tested above 110mph but im pretty sure it will be the same.

The thing with road angels is its best to test on a flat road and you must keep the speed constant e.g. sit at 60mph constant on a flat road and after 2-3 secs it will show your accurate speed.
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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11th Jan 07 at 15:27   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Eckmcmann
by any chance did it read 88mph at one point?




Genius!
VegasPhil
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Registered: 16th Jan 05
Location: Fareham, Hants Drives: Octavia VRS
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11th Jan 07 at 15:35   View Garage View User's Profile U2U Member Reply With Quote
WTF is this topped?

Corsa 2.0 16v Vegas - Sold
Dean_W
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Registered: 13th Dec 05
Location: Downham Market, Norfolk
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11th Jan 07 at 15:36   View User's Profile U2U Member Reply With Quote
Who's had the shovel out?
Eck
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Registered: 17th Apr 06
Location: Lundin Links, Fife
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11th Jan 07 at 15:37   View Garage View User's Profile U2U Member Reply With Quote
It wasn't me Johnhara1 deleted his post
Dean_W
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11th Jan 07 at 15:39   View User's Profile U2U Member Reply With Quote
Hmmm. He says.
johnhara1
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11th Jan 07 at 15:43   View User's Profile U2U Member Reply With Quote
deleted wot post?
Eck
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Registered: 17th Apr 06
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11th Jan 07 at 15:45   View Garage View User's Profile U2U Member Reply With Quote
the ones in the trash can from this thread
johnhara1
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11th Jan 07 at 15:55   View User's Profile U2U Member Reply With Quote
lol deleted due to double post so its still there just below yours now.

Wot was with the back to the future comment anyway?
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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11th Jan 07 at 15:58   View Garage View User's Profile U2U Member Reply With Quote
the thread is from 2005
Butler
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Registered: 2nd Jun 05
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11th Jan 07 at 16:18   View User's Profile U2U Member Reply With Quote
apparently this was started by paul_j, but the first post is clearly from donna.
johnhara1
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11th Jan 07 at 16:33   View User's Profile U2U Member Reply With Quote
haha someone definately posted before me tho, i didnt bump this old thread.
Ant
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Registered: 12th May 02
Location: Hereford and Worcester
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11th Jan 07 at 18:10   View User's Profile U2U Member Reply With Quote
was probably split

anyway load of old tosh GPS can be inacurate as it is a 2d system and has no scope for altitude so if you on a hill the reading will be inacurate.

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