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Discussion Starter #1
Hi. Apologies if this has been covered elsewhere. I did a search and couldn't find any helpful info. It's been about 7 years since I did any data logging (I was on a very long track day hiatus). My DL1 doesn't work anymore, and now Harry's Lap Timer and RaceChrono look like strong "close enough" solutions for what I need. I just need some advice on the set-up, though:

1) Where do people mount their phones, and how? During one of my first track days back after the hiatus, I had a suction-cup mount for GoPro right below the rear-view mirror (that is, inside the car, stuck to the windshield). I found it distracting, and it blocked my field of view during right-turn corners. A phone will probably be bigger, so I'm confused about the mounting location.

2) I have never used these apps before, so I'd like some advice on whether the phone running Harry's Lap Timer can go anywhere in the car, and still provide useful data. My current spot for the GoPro is right on the flat deck of the dashboard (I use the adhesive mount). If I used the GoPro for video, and the phone/app for data acquisition, can I basically mount the phone anywhere as long as it has line-of-site with GPS satellites?

3) For that matter, does anyone use external GPS for more accurate data? How exactly does it connect to the phone -- Bluetooth?

4) And, finally, is anyone using either Harry's or RaceChrono to trigger/control GoPro? Any advice? Is the set-up self-evident once you begin using the app?

For what it's worth, not sure which phone I'll be using for this. It will probably be Android. I have a bunch of phones (review units) sitting around, and will probably use the Galaxy S6 Edge unless popular opinion says that's not a good idea.

THANKS IN ADVANCE!
 

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This seems to be the gold standard for windshield mounting iPhones. I used to use one before I upgraded to an AiM Solo DL, which also mounts with a Ram Mount Suction cup.
 

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Bottom right corner of the windshield works for me most of that area is blocked by the fender anyway. Plus you can glance over and see the time on the straights.

You can see the suction mount in this pic: https://www.flickr.com/photos/rnair/26265221556/
Sample Race Chrono vid from a Nexus 5X
 

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I will take a picture tonight, but I mounted my phone on a speaker delete plate, driver’s side. It is low enough to be out of the way and I bolted it to the plate, don’t have to worry about the suction cup not holding. I’m using Harry’s Lap Timer and syncing to GoPro video after. I have not moved to using external GPS sensors but I’m guessing once I need that I will need better data than this setup provides. I have not tried using the phone to start the GoPro, might have to play with that some.
 

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Discussion Starter #5
Bottom right corner of the windshield works for me most of that area is blocked by the fender anyway. Plus you can glance over and see the time on the straights.

You can see the suction mount in this pic: https://www.flickr.com/photos/rnair/26265221556/
Sample Race Chrono vid from a Nexus 5X
http://www.youtube.com/watch?v=RMXm-rSeRRE
Rahul: With the phone mounted that far to the left, how do you get the video image so well centered? It looks like the phone/camera is almost in the middle of the dash. Also, which app are you using? Thanks much.
 

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I use Harry's on my S6, with the Hero3 (wireless) and Qstarz BT-Q818XT (Bluetooth). First using it was last weekend and messed it all up due to user error. Otherwise it seemed to work great aside from my moment of stupidity.

You have to be mindful which GoPro you get. Harry's can only remotely control a few of the GoPros (Hero3/3+ silver and Hero4 silver).
My phone is suction cup mounted to the dash right between the center air vents with an
. I keep it in landscape mode and have it down low covering the top portion of the vents. Not sure if that will be my long term location or not, still experimenting.

I highly recommend the external GPS units. The one in your phone (1hz) is complete garbage for track or autoX data logging IMO. It all depends on your expectations and what you're doing with the GPS data.
 

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Rahul: With the phone mounted that far to the left, how do you get the video image so well centered? It looks like the phone/camera is almost in the middle of the dash. Also, which app are you using? Thanks much.
Phone is as far to the right as I could get it (see wiper for reference) but points a little to the left to get a more centered view. Cellphones have a wide enough field of view that it doesnt seem to matter at all. The more annoying issue was trying to get it perfectly horizontal but at some point I just gave up :)

I'm using Race Chrono Pro on a Nexus 5X.
 

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Discussion Starter #9
More than anything, mounting location tips would be helpful. As in: People who use the phone to record video, where and how do you mount? (Though even that may be moot: I already have a compatible GoPro, and I'll get an external GPS. So I imagine in this scenario, I could have the phone mounted anywhere I like.)
 

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I put mine on the passenger's side of the wind shield. However, since you are using external video and GPS, it makes no difference where you put it. You could tape it in the glove tray. You could put it in your pocket. Its a power hog, you will want to plug it in.

Get a bluetooth ODB2 adapter and Harry's will record that data also.
 

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Discussion Starter #11
I put mine on the passenger's side of the wind shield. However, since you are using external video and GPS, it makes no difference where you put it. You could tape it in the glove tray. You could put it in your pocket. Its a power hog, you will want to plug it in.

Get a bluetooth ODB2 adapter and Harry's will record that data also.
Yeah, I was wondering about OBDII -- what data does it actually pull? Also, does the app give you a variety of visual themes/designs for the gauges?

As for power, I can't get anything to actually stay in the 12V port anymore. But it looks like I'll be using a Samsung GS6 for this, and at least that has quick-charging. Also, it looks like the imminent version 20 of Harry's will allow the user to turn off local (phone) video recording. I would imagine this will help save power as well.
 

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I have a windshield mounted via suction cup phone/mp3 holder that I mount on the lower center of the glass when I track the car. MotorLap and Track Addict are apps worth looking into as well.
 

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Discussion Starter #14
Here are a couple of quick pics of how I mounted the phone to the speaker delete. I don't think this would work if you wanted to also use the phone to take video, it also makes it almost impossible to touch the phone once harnessed in.
Thanks for the pics! But I think I want to keep the speaker. :)
 

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I use the phone holder I bought from RLS a few years ago. Modified it to fit the new phones as time passed.


Sent from AutoGuide.com Free App
Same here. And use phone to check and control the separate camera (such as gopro) as well as Harrys Timer
 

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Get the ram mount. I've been using it off-road for about 3 months now and it's great!
I've adapted it to my cup holder invention and it works perfectly on my tablet.
 

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Yeah, I was wondering about OBDII -- what data does it actually pull? Also, does the app give you a variety of visual themes/designs for the gauges?

As for power, I can't get anything to actually stay in the 12V port anymore. But it looks like I'll be using a Samsung GS6 for this, and at least that has quick-charging. Also, it looks like the imminent version 20 of Harry's will allow the user to turn off local (phone) video recording. I would imagine this will help save power as well.
According to Harry's current documentation:


Currently, the following data is supported and recorded like all other sensor data is:


✦Wheel speed (replaces all Speed displays except 'Speed' in GPS View)

✦Engine RPM

✦Vehicle Identification Number (VIN - is associated with a Vehicle)

✦Fuel Level (percentage)

✦Current Voltage of electric system

✦Coolant and Oil temperature

✦Throttle position (percentage)

✦Gear (calculated from RPM and speed)

✦Mass Air Flow (MAF)

✦Manifold Air Pressure (MAP)

✦Intake Air Temperature


In addition to this values delivered directly, LapTimer derives some values:


✦Current fuel consumption (pretty accurate for vehicles running petrol engines)

✦Power developed by engine (imprecise)

✦Torque developed by engine (imprecise)
 

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I use the ram mount on my dash but I also have a mount for the harness bar. Can't remember where I got the mount from but it usually works fairly well. I prefer this view rather than the dash view. Wind noise is louder here and it takes a little patience to set up, but it works with the phones internal GPS in this location.
 

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my clubs require anything to be tethered down. I just keep my phone and external bluetooth GPS unit in my jacket/vest pockets zipped up
 
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