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Author Track/race data loggers and track day legalities
Butler
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Registered: 2nd Jun 05
Location: London
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9th Sep 09 at 12:40   View User's Profile U2U Member Reply With Quote
I understand you can buy GPS data logger devices which have the ability to record track times. Does anyone know specifically the legalities of such things on track days? and also what is available on the market?
ed
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Registered: 10th Sep 03
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9th Sep 09 at 12:42   View User's Profile U2U Member Reply With Quote
Legalities? I don't see why you wouldn't be allowed to use them.

We use this one on our race car at uni:

http://www.race-technology.com/dl1_2_27.html
Butler
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Registered: 2nd Jun 05
Location: London
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9th Sep 09 at 12:43   View User's Profile U2U Member Reply With Quote
I would have expected timing yourself to be frowned upon on public track days
SportBoy
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Registered: 5th Oct 01
Location: Retford, Nottinghamshire
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9th Sep 09 at 14:47   View User's Profile U2U Member Reply With Quote
all trackdays ive been on dont allow any sort of timing as they class it as competitive .. but what they dont know doesnt harm them
Butler
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Registered: 2nd Jun 05
Location: London
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9th Sep 09 at 14:56   View User's Profile U2U Member Reply With Quote
Thats what im thinking. Looking at the on ed posted, it plugs directly into a standalone ecu, suppose this is the only way...
lee303
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Registered: 1st Jul 08
Location: under the nova usually
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9th Sep 09 at 15:48   View User's Profile U2U Member Reply With Quote
most days ban timing so you;re not trying to set a lap record on a track day, or use it as a sneaky testing day for racing, but what they don't know...
Ian
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Registered: 28th Aug 99
Location: Liverpool
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9th Sep 09 at 15:55   View Garage View User's Profile U2U Member Reply With Quote
I had a phone with GPS logger software running and they didn't say anything.

I wouldn't imagine they would be able to monitor usage of such devices too strictly, they're usually very small.
Leighton
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Registered: 21st Feb 01
Location: Liverpool
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9th Sep 09 at 15:58   View Garage View User's Profile U2U Member Reply With Quote
Ian had RaceChrono on my N96 with him and it works really well, there would be no way of them tracking that you are using it.
Its a good bit of software and Free
Ste L
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Registered: 3rd Jul 06
Location: Manchester Drives: 106 16v Rallye
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9th Sep 09 at 18:14   View User's Profile U2U Member Reply With Quote
i think they dont let you do it, due to insurance reason's....


but what they dont know what hurt them
Ian
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Registered: 28th Aug 99
Location: Liverpool
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9th Sep 09 at 19:01   View Garage View User's Profile U2U Member Reply With Quote
Woo

Found some nice PC software to analyse the NMEA data.
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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9th Sep 09 at 19:38   View User's Profile U2U Member Reply With Quote
the DL1 is quite expensive but the logging from it is much better than the likes of the racelogic performance box. Better resolution.

Costly though.
Ian
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Registered: 28th Aug 99
Location: Liverpool
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9th Sep 09 at 19:41   View Garage View User's Profile U2U Member Reply With Quote
Depends if you need resolution.

The phone is 1Hz I think but free. Can't complaint.
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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9th Sep 09 at 20:00   View User's Profile U2U Member Reply With Quote
I bought a DT lap timer ages ago... the IR ones that use a beacon. Yet to use it

You can DL laps to PC with it, but its just lap times... no speeds/Gforce etc.

Have a look at this thread... some logging chat -

http://www.trackscotland.co.uk/forums/viewtopic.php?t=1385

http://www.lancerregister.com/showthread.php?t=257671
RCS
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Registered: 26th Jan 05
Location: Lichfield/Dundee
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9th Sep 09 at 20:59   View User's Profile U2U Member Reply With Quote
Most of the free stuff doesn't have the resolution to produce anything meaningful - you may get lap times but then not enough data to do anything with them.

AK - That analysis example doesn't show any real conclusions. Theres gathering data, then knowing how to use it.

Theres lots of cheap books (£20ish) on data logging, well worth a read.
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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9th Sep 09 at 21:21   View User's Profile U2U Member Reply With Quote
RCS - I never said it did

You cant really gather any useful info from different cars and different drivers. In the TS post i'm just interested in the different corner speeds round KH. (and to that extent for my posting on MLR...)
RCS
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Registered: 26th Jan 05
Location: Lichfield/Dundee
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9th Sep 09 at 21:46   View User's Profile U2U Member Reply With Quote
Instantaneous corner speed depends on the amount of grip available (tyres) and how much lateral acceleration the car can achieve (suspension etc) along with the actual radius of turn the car is negotiating (the line which is taken).
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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9th Sep 09 at 21:52   View User's Profile U2U Member Reply With Quote
yes......

hence I'm comparing corner speeds.... Its clear to see for the comparisons Fee is losing a lot of time at a certain corner as she is much slower than all the other cars involved. Regardless of car/driver/tyres/susp/line/temp/weather/or if its a saturday.

Basic observations can be made.... you dont need to over analyse it.

 
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