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Author Are sat nav speeds accurate
Jenko_Sport
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Registered: 25th May 06
Location: Stoke-on-Trent
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27th Nov 06 at 23:51   View User's Profile U2U Member Reply With Quote
Just curious.
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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27th Nov 06 at 23:55   View Garage View User's Profile U2U Member Reply With Quote
more accurate then your speedo, yes.
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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28th Nov 06 at 00:01   View User's Profile U2U Member Reply With Quote
had an indicated 3mph on my tomtom while sat im my drive before now...
deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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28th Nov 06 at 00:03   View User's Profile U2U Member Reply With Quote
I heard Road Angels were accurate to the nearest second as it's satellite guided. Ought to be pretty accurate if it's spotting speed cameras etc.
Robin
Premium Member

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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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28th Nov 06 at 00:03   View Garage View User's Profile U2U Member Reply With Quote
Mine seems fairly accurate, at 0mph. obviously I don't know how good it is at speed though.
Haimsey
Premium Member

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Registered: 8th May 05
Location: Nottingham Drives: Corsa B
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28th Nov 06 at 00:04   View Garage View User's Profile U2U Member Reply With Quote
i always thought my tomtom was 3-4mph but its probably the speedo thats out

Marcy Marc

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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
User status: Offline
28th Nov 06 at 00:09   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Haimsey
i always thought my tomtom was 3-4mph but its probably the speedo thats out

More than likely.
Jenko_Sport
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Registered: 25th May 06
Location: Stoke-on-Trent
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28th Nov 06 at 01:06   View User's Profile U2U Member Reply With Quote
Hmm well car goes faster than it shoud then
chris-sri
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Registered: 3rd Apr 05
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28th Nov 06 at 01:36   View User's Profile U2U Member Reply With Quote
Not sure how well they cope with inclines/declines? Anyone who can clear this up?
marklaruk
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Registered: 4th Sep 04
Location: Leeds
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28th Nov 06 at 02:01   View User's Profile U2U Member Reply With Quote
with the inclines/declines it takes abit of time for the information to pass from your satnav to the satelite and back... so will lag abit

when at a constant steady speed tho i think they are very accurate
Monkey_GSi
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Registered: 6th May 06
Location: Cornwall
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28th Nov 06 at 06:06   View User's Profile U2U Member Reply With Quote
on flat they are very accurate but down hill and up hill they aint as much thats what i was told
CorsAsh
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Registered: 19th Apr 02
Location: Munich
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28th Nov 06 at 08:49   View User's Profile U2U Member Reply With Quote
Mine ties up with my speedo to within 3mph, I have 16" wheels so I'm guessing the speedo isn't far out... shocking for a Corsa really
Teknologikal
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Registered: 11th May 06
Location: Cardiff
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28th Nov 06 at 16:12   View User's Profile U2U Member Reply With Quote
Mine seems accurate enough tbh
gsimark
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Registered: 14th Dec 05
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28th Nov 06 at 16:24   View User's Profile U2U Member Reply With Quote
i have a navman ic330 and a digi dash in the corsa there is a 4mph difference betwwen the two at any speed so ie dash 70mph nav at 74mph, don't which is right
Jonny P
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Registered: 11th Dec 04
Location: Merseyside Drives: Civic Type R EP3
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28th Nov 06 at 16:34   View User's Profile U2U Member Reply With Quote
as far as know, at slower speeds your Speedo is more accurate but as you pass 65ish your Sat-Nav is more accurate (assming your on flats)

 
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