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 Post subject: iPhone Data logger
PostPosted: Sun Jan 14, 2018 3:16 pm 
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Joined: Sat Aug 28, 2010 3:54 am
Posts: 141
I have seen either on this discussion site or the MG Experience site a reference to an app that can be loaded onto an iPhone so the phone can be used as an on track data logger.

But of course I can't find it again.

Anybody know anything about such an animal?

Thanks,

John Hewell
#29 HP/GTL Spridget


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 Post subject: Re: iPhone Data logger
PostPosted: Sun Jan 14, 2018 9:12 pm 
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Joined: Tue Aug 20, 2002 10:01 am
Posts: 2598
Location: Belmont, CA
TrackAddict. The free version only allows 3 saved sessions, and the full version is only like $8.99

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Tim Linerud
#95 GTL VW Rabbit GTI
2014 Runoffs Sunoco Hard Charger - GTL
2016 Western Conference GTL Champion


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 Post subject: Re: iPhone Data logger
PostPosted: Mon Jan 15, 2018 4:22 am 
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Joined: Mon Aug 19, 2002 2:52 pm
Posts: 1970
Location: Just south of Indianapolis
I used harry's lap timer. it was good and there is an interface to the ecu if you have an obd2.

was really good for a phone

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Aaron Johnson
Ex #8 HP Spitfire 1500 (it's happy at its new home)
#08 EP Honda S2000
Member #310579


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 Post subject: Re: iPhone Data logger
PostPosted: Mon Jan 15, 2018 10:43 am 
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Joined: Sun Jan 23, 2011 4:54 am
Posts: 1805
I see TrackAddict and Harry's Lap Timer used a lot.

Something to keep in mind with these guys is that *typical* GPS refresh rate is only 1-2Hz on these guys to help save battery life and processor cycles on the phone.. The lower refresh rate provides "limited data" as compared to a standalone DAQ system, so be sure to keep that in mind.

There are new options in some of these programs to add external GPS inputs and increase refresh rates, at expense of battery life and processor power. It's an option to consider.

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Matt Blehm
Houston Region
EP 1st Gen RX7
STU Nissan 240SX


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 Post subject: Re: iPhone Data logger
PostPosted: Mon Jan 15, 2018 10:48 am 
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Joined: Mon Aug 19, 2002 2:52 pm
Posts: 1970
Location: Just south of Indianapolis
I have a Bluetooth gps sender for 5 hz collection. They are cheap and it lasted all day

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Aaron Johnson
Ex #8 HP Spitfire 1500 (it's happy at its new home)
#08 EP Honda S2000
Member #310579


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 Post subject: Re: iPhone Data logger
PostPosted: Mon Jan 15, 2018 11:02 am 
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Joined: Sat Aug 17, 2002 10:36 am
Posts: 746
Location: Toronto, ON
I use Track Addict for video and data. It offers tons of information for an app that costs a few bucks. Lap times are within hundredths of the official times. The good thing about Track Addict is that they regularly update the app. I wired in a 12 volt outlet to plug in the iPhone charger.

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Joe Camilleri
HP Scirocco #06


VW Racers Facebook page https://www.facebook.com/groups/309326556818/


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 Post subject: Re: iPhone Data logger
PostPosted: Tue Jan 23, 2018 6:02 pm 
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Joined: Tue Oct 08, 2002 10:17 am
Posts: 2639
Location: Innsbrook, MO
Not to be a curmudgeon or anything but don't forget that getting the data is the EZ part. The HARD part is analysis software that helps you improve the car and/or driver BEFORE the next session.

In the DAQ business.........all you are really buying is the analysis software. To make things even more confusing, most companies give you that for free!!!

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Thanks, Jay Lutz

"I am merely a visitor on this planet"


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 Post subject: Re: iPhone Data logger
PostPosted: Wed Jan 24, 2018 6:26 am 
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Joined: Fri Dec 23, 2011 6:59 am
Posts: 1104
Location: Spring Hill, FL.
Very true Jay. We use Harry's with the Bluetooth little red 5-10 gz GPS. You really need solid target values to compare your data with . In My Son's case we would swap cars and look a the the data. One problem is that by my instructing him, our lines and speeds were very close.
Another issue I have seen is that the guy that gets 101% out of the car often runs the same times as the guy that hits the proper marks +- 3in all the way around, yet gives up lateral value to hit those marks. Comparing those two data streams may pick up both . This happened when I helped a couple of USAC F 2000 guys @ WGI.
Often the most useful car setup data is the steering wheel angle. ;
https://www.youtube.com/watch?v=1uJ9XCFZBvA In this track day vid you can see the car is much better to the right then left.
Needs another 5# air in the RR .
But still a very good car. (Chumpcar on free spec ford goodyears) . Yes we wear the full race suits now.

LOL I dont see the phone in the car!!

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Mike Ogren/Protech Racing, http://www.FWDracingguide.com http://www.ogren-engineering.com/ 352.428-8983 mogren@tampabay.rr.com


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