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2484 Posts Member #: 1954 Post Whore Luton Bedfordshire |
30th Jun, 2018 at 08:42:30pm
I have been away from minis for near on four years as I have been running my son and his go kart which has taken all my time and money. If you think minis need deep pockets try cadet karting!
Own the day
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
30th Jun, 2018 at 10:00:02pm
I use a GPS logger on my hillclimber. I'm not overly impressed. I think a ground speed sensor would be best (that's what WRC cars use). Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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3569 Posts Member #: 655 Post Whore Northern Ireland |
30th Jun, 2018 at 10:25:46pm
On 30th Jun, 2018 wil_h said:
I use a GPS logger on my hillclimber. I'm not overly impressed. I think a ground speed sensor would be best (that's what WRC cars use). I'm sure WRC cars will use GPS and many many many other things. And all loggers etc are not equal. The only downside to a good GPS is ensuring you have a good signal, which if there is tree cover etc or tall buildings that can get more difficult, even with a good external antennae. In which case it's easy enough to go down the route of undriven wheel speed for that aspect. Edited by stevieturbo on 30th Jun, 2018. 9.85 @ 145mph
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
1st Jul, 2018 at 09:15:26am
https://en.wikipedia.org/wiki/Ground_speed_radar On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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 2091 Posts Member #: 9894 Post Whore Dorking |
1st Jul, 2018 at 11:06:12am
Im using a GPS speedo in my car. It seems fairly accurate but it does seem to struggle with signal occasionally. Not sure it would be ideal for a data logger. |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
1st Jul, 2018 at 04:49:08pm
The thing to say about the GPS is that when I look at the logs to compare runs the track route varies massively. It's just not accurate or consistent enough.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 (2)[/url] by [url=https://www.flickr.com/photos/150672766@N03/]Rod Sugden[/url], on Fli) 5988 Posts Member #: 2024 Formally Retired Rural Suffolk |
1st Jul, 2018 at 05:23:40pm
Everything I've ever seen with GPS used for speed measurement tells me it is very accurate in a non-changing situation....
Schrödinger's cat - so which one am I ??? |
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1267 Posts Member #: 831 Post Whore Montreal, Canada |
1st Jul, 2018 at 05:55:02pm
Most GPS units use time and position to compute speed so there will be a delay in getting the correct speed during changing situations. And some GPS are updating their position slowly (1Hz or less) so the delay is very obvious.
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2484 Posts Member #: 1954 Post Whore Luton Bedfordshire |
2nd Jul, 2018 at 01:04:56pm
how many satellites do your respective units lock onto the one on my boys kart locks onto 9 not sure what the refresh rate is. Own the day
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5988 Posts Member #: 2024 Formally Retired Rural Suffolk |
2nd Jul, 2018 at 03:13:20pm
On 2nd Jul, 2018 Mr Joshua said:
how many satellites do your respective units lock onto the one on my boys kart locks onto 9 not sure what the refresh rate is. Haven't a clue, 3 minimum obviously but they vary make from make (and what is available with tree/building blocking etc.) Ask the manufacturers, but one simple point, more than 3 will make the position (hence the speed calculation) more accurate but processing more than three will slow the speed calculation down and if the "device" (whatever it is) has other things to do like data logging on a running engine, maybe even running an engine, or processing high resolution MP4 video like on a good dashcam, someone will have decided which is most important for the CPU. My dashcam does 1080p 60fps video really well but the GPS speed superimposed on the video is at least one second (probably two) behind the video so it's obvious the video gets most of the CPU time. Schrödinger's cat - so which one am I ??? |
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Site Admin  15300 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
2nd Jul, 2018 at 03:59:54pm
My mate runs a circuit car, he has a Race Technology dash/data logger and swears by it.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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2484 Posts Member #: 1954 Post Whore Luton Bedfordshire |
2nd Jul, 2018 at 04:59:16pm
I have had my sons data logger sat on the dash just registering the cars speed being the GPS sensor and it was on point for the entire journey the unit he uses is the unipro. Im trying to take the guess work out of my speed readings. Own the day
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3569 Posts Member #: 655 Post Whore Northern Ireland |
2nd Jul, 2018 at 06:12:35pm
On 1st Jul, 2018 Rod S said:
Everything I've ever seen with GPS used for speed measurement tells me it is very accurate in a non-changing situation.... But otherwise, it lags at least a second, sometimes a lot more, behind real time. I've seen it with ShadowDash (a Megasquirt / TunerStudio thing), every stick to the windscreen type GPS device that I've used, my Blackvue dashcam setup, and pretty much every dashcam video (with a GPS enabled one) that you can watch on YouTube. Accurate, but delayed. You havent seen very many then Even a basic 10Hz VBox is very very accurate, and still an industry standard for easy performance testing etc. Although more professional stuff would use their much more expensive gear. Most GPS stuff you'd consider buying these days is in the 10-50Hz range, over that and it can get very expensive. But even 50Hz stuff is affordable these days. Dashcam GPS is cheap shite, plain and simple so no sense even trying to compare it to something you'd use for a logger. Edited by stevieturbo on 2nd Jul, 2018. 9.85 @ 145mph
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2484 Posts Member #: 1954 Post Whore Luton Bedfordshire |
2nd Jul, 2018 at 09:51:44pm
Just checked and the unipro is up to 60hz Own the day
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2484 Posts Member #: 1954 Post Whore Luton Bedfordshire |
2nd Jul, 2018 at 09:51:48pm
Just checked and the unipro is up to 60hz Own the day
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Site Admin  9401 Posts Member #: 58 455bhp per ton 12 sec 1/4 mile road legal mini Sunny Bridgend, South Wales |
8th Jul, 2018 at 08:59:23pm
I use and install quite a bit of loggers. I use personally the race technology range. I find the logging extremely accurate, often my times displayed on my dash are within 100's of a second compared to the official TSL timing taken at the circuit Team www.sheepspeed.com Racing
On 15th May, 2009 TurboDave said:
I think the welsh one has it right! 1st to provide running proof of turbo twinkie in a car and first to run a 1/4 in one!! Is your data backed up?? directbackup.net one extra month free for all Turbo minis members, PM me for detials |
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