Lap recording software.

stuy486 · 08-07-2014, 01:23 PM

I'm one of the two developers for RaceTrace, which is an iPhone app that does lap timing as well as data analysis. I'd personally recommend that

. Check out the news page on our site for some examples of how you can use the app to pick up time.

I will point out, if you're going to use any mobile app, you'll definitely want to invest in bluetooth GPS device. Mobile phone GPS data is crap when it comes to data analysis purposes. We recommend either the BadElf Pro or Dual XGPS devices. With mobile phone GPS data you'll get lap times that are "in the ballpark", but not much else.

Let me know if you have any questions.

wstar · 08-07-2014, 02:27 PM

Quote:

Originally Posted by stuy486

I'm one of the two developers for RaceTrace

Neat! I'm a software developer too, but in a completely different area. I'm not an iPhone user, but if I could offer a feature suggestion for your app: I've found the predictive lap times on my current datalogger setup *really* helpful. It's a mode where, as you go around the track, the display shows a prediction of what your lap time will be (based on your lap time-vs-position compared to other laps), and gives a display something like:

1:20.44 (predicted full time for current lap-in-progress, which varies up and down)
+0:03.44 (prediction above is 3.44 seconds slower than your best)
(and then red/green background for whether the current prediction is running faster or slower than best)

The predictions tend to be a little jumpy at the start of a lap and then settle in the closer you get to the end, obviously.

When you get the hang of watching that out of the corner of your eye, you start picking up mid-lap info like "hey when I missed my turn-in back there, it set me back 0.3s on my laptime", or "yeah, apexing this spot a little earlier saved me 0.2s".

stuy486 · 08-07-2014, 02:32 PM

Quote:

Originally Posted by wstar

Neat! I'm a software developer too, but in a completely different area. I'm not an iPhone user, but if I could offer a feature suggestion for your app: I've found the predictive lap times on my current datalogger setup *really* helpful. It's a mode where, as you go around the track, the display shows a prediction of what your lap time will be (based on your lap time-vs-position compared to other laps), and gives a display something like:

1:20.44 (predicted full time for current lap-in-progress, which varies up and down)
+0:03.44 (prediction above is 3.44 seconds slower than your best)
(and then red/green background for whether the current prediction is running faster or slower than best)

The predictions tend to be a little jumpy at the start of a lap and then settle in the closer you get to the end, obviously.

When you get the hang of watching that out of the corner of your eye, you start picking up mid-lap info like "hey when I missed my turn-in back there, it set me back 0.3s on my laptime", or "yeah, apexing this spot a little earlier saved me 0.2s".

Thanks for the recommendation, it's definitely on our short list of features to add. I play iRacing myself and really like their implementation of predictive lap timing, I imagine ours will be similar to that.

takjak2 · 08-07-2014, 05:31 PM

Quote:

Originally Posted by wstar

I've found the predictive lap times on my current datalogger setup *really* helpful. It's a mode where, as you go around the track, the display shows a prediction of what your lap time will be (based on your lap time-vs-position compared to other laps), and gives a display something like:

1:20.44 (predicted full time for current lap-in-progress, which varies up and down)
+0:03.44 (prediction above is 3.44 seconds slower than your best)
(and then red/green background for whether the current prediction is running faster or slower than best)

Best feature of in-car data. This is the reason for having an AiM SoloDL in the car. Everything else comes back at the hotel or the following week. Predictive lap timing will make you aggressively faster.

08-07-2014, 01:23 PM	#1 (permalink)
stuy486 Base Member Join Date: Oct 2013 Location: Santa Barbara, CA Posts: 81 Drives: '12 370Z MB M6 Rep Power: 12	I'm one of the two developers for RaceTrace, which is an iPhone app that does lap timing as well as data analysis. I'd personally recommend that . Check out the news page on our site for some examples of how you can use the app to pick up time. I will point out, if you're going to use any mobile app, you'll definitely want to invest in bluetooth GPS device. Mobile phone GPS data is crap when it comes to data analysis purposes. We recommend either the BadElf Pro or Dual XGPS devices. With mobile phone GPS data you'll get lap times that are "in the ballpark", but not much else. Let me know if you have any questions. GSS138 and glw like this. Last edited by stuy486; 08-07-2014 at 01:27 PM.

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