THSCC Forums

1st test - turn the volume of the Bullitt up and imagine a race track.

http://youtu.be/LeI1oiBlsow

The blue cross displays g-force - lateral, braking, acceleration. The green dot is the start/finish line. As you pass it your lap time is displyed for 10sec then reverts to timing the next lap. Wadaya think?

The setup is:

iphone4
TrackAddictHD app - $5 http://www.racerender.com/TrackAddict/Features.html
RaceRender2 editing software - free download http://www.racerender.com/RR2/Features.html

The iphone has the video camera, GPS and accelerometer. The App creates a sychonized video file and a data file (position, speed, g-force, etc). The software combines them and allows additional editing.

So far limitations are: wicked battery hog - really need to run the iphone while plugged in. The free software allows you only 3min clips - unlimited requires the full software - $25. A 10min clip was about 1GB with the video and data quality set a max. You can turn down the video quality and reduce the number of data points to reduce file size.

I'm going to keep playing with it. It looks like you can plot g-force on a time line and compare braking and cornering force from lap to lap. That would be cool.

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09 Bullitt - DD
11 Fusion - Wife's DD
03 Mazda6 - Track car
00 PSD Excursion - Tow rig
67 Firebird - Don't you still own your 1st car?
61 F100 - Dad's truck
90 Moto Guzzi Calif III - Tourer
00 Cagiva - Adventure bike
00 DRZ400 - Woods bike

Be prepared to offer the phone some shade on hot days, it will overheat, FAST.

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02 Focus SVT
STF 9

Yeah I noticed it got warm after 10-15min. I'm gonna play with the quality settings and see if that has an impact. For Autocross it should be fine - 30min track sessions - I don't know.

_________________
09 Bullitt - DD
11 Fusion - Wife's DD
03 Mazda6 - Track car
00 PSD Excursion - Tow rig
67 Firebird - Don't you still own your 1st car?
61 F100 - Dad's truck
90 Moto Guzzi Calif III - Tourer
00 Cagiva - Adventure bike
00 DRZ400 - Woods bike

I think the GPS sensor is the culprit. It uses a bit of battery power to run that. If you could use an external sensor, I bet that the phone could record video all day and not overheat.

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In need of car.