Harry's GPS LapTimer Pro for iPhone

leo95se · 08-23-2011, 07:50 PM

Suction cup idea failure

. Bmwcca won't allow them. So I'll have to make a mount for my headrest.

LateBraking · 08-23-2011, 08:05 PM

Quote:

Originally Posted by Montoya

Did you mean why, not where? If why, because you need a mount anyways and the Tom Tom with Gps should improve accuracy (despite some posts to the contrary and in my limited experience it does).

Where? Best buy- $80

lol I meant where. Thanks!

Erhan · 08-23-2011, 08:47 PM

Quote:

Originally Posted by leo95se

Suction cup idea failure

. Bmwcca won't allow them. So I'll have to make a mount for my headrest.

The iPhone has to sit close to windshield, otherwise you will loose accuracy.

garek · 08-24-2011, 02:12 PM

Quote:

Originally Posted by leo95se

Suction cup idea failure

. Bmwcca won't allow them. So I'll have to make a mount for my headrest.

OMG. Talk about risk averse lawyers/insurers running amuck. Having your iPhone mount come off during a session and actually cause a crash which they would be liable for is like 3 standard deviations out.

ex10psi · 08-25-2011, 01:07 AM

any lap timer apps for android phones?

LateBraking · 08-27-2011, 08:12 PM

Quote:

Originally Posted by ex10psi

any lap timer apps for android phones?

I don't know of any, sorry.

Super retard question time: Can anyone throw me a link to the iPhone 4 TomTom attachment? I only seem to be running into iPhone 3GS versions right now for some reason. Or is there no iPhone 4 attachment and the internal GPS works fine?

414bhp · 08-27-2011, 08:18 PM

Quote:

Originally Posted by ex10psi

any lap timer apps for android phones?

See this thread:
http://www.m3post.com/forums/showthread.php?t=576312

Montoya · 08-28-2011, 10:01 AM

Quote:

Originally Posted by LateBraking

I don't know of any, sorry.

Super retard question time: Can anyone throw me a link to the iPhone 4 TomTom attachment? I only seem to be running into iPhone 3GS versions right now for some reason. Or is there no iPhone 4 attachment and the internal GPS works fine?

Don't worry, the dock works fine for both. There is a little spacer inside for the Iphone 4 to fit the cradle better. I found that it works without it if I leave my cover on since its about the same thickness as the spacer.

M3 Montreal · 08-30-2011, 06:25 PM

Used it over the weekend to record laptimes and do some video. Its annoying that it only records every second lap but at least it does acquire the info from every lap (see cool PDF file below).

I did not have brake pads for my M3 so I took a bonestock S4 and recorded.

Heres a lap with me chasing down a BMW 1M.

and here is me behind my friend with the same exhaust as me... I called this music to my ears and you should listen to it with volume UP!

and heres a PDF of my fastest lap of 2:05 at Le Circuit Mont Tremblant from Harry's Laptimer. Really shows me how SLOW im taing turns 1 ,2 and 3...

MaxL · 08-30-2011, 07:22 PM

Quote:

Originally Posted by M3 Montreal

and heres a PDF of my fastest lap of 2:05 at Le Circuit Mont Tremblant from Harry's Laptimer. Really shows me how SLOW im taing turns 1 ,2 and 3...

HLT does not record speed correctly for some reason, especially with rapid speed changes and turns - maybe an interpolation issue or issues with elevation change (it may be measuring horizontal speed only) or just a glitch. I used it with an external 5Hz GPS logger, which is accurate by itself, and then overlaid the data on video and it was clear that sometimes the car was accelerating but the displayed speed was going down.

M3 Montreal · 08-30-2011, 07:39 PM

Quote:

Originally Posted by MaxL

Quote:

Originally Posted by M3 Montreal

and heres a PDF of my fastest lap of 2:05 at Le Circuit Mont Tremblant from Harry's Laptimer. Really shows me how SLOW im taing turns 1 ,2 and 3...

HLT does not record speed correctly for some reason, especially with rapid speed changes and turns - maybe an interpolation issue or issues with elevation change (it may be measuring horizontal speed only) or just a glitch. I used it with an external 5Hz GPS logger, which is accurate by itself, and then overlaid the data on video and it was clear that sometimes the car was accelerating but the displayed speed was going down.

Are you using a 4g with the TomTom cradle? I would say it's very accurate as I looked at my speedo and 195 down the back straight is correct and so is the low 117 or so at turn 1. I'd say it's accurate for me.

Also had a very strong signal.

LateBraking · 08-31-2011, 01:01 PM

Quote:

Originally Posted by MaxL

HLT does not record speed correctly for some reason, especially with rapid speed changes and turns - maybe an interpolation issue or issues with elevation change (it may be measuring horizontal speed only) or just a glitch. I used it with an external 5Hz GPS logger, which is accurate by itself, and then overlaid the data on video and it was clear that sometimes the car was accelerating but the displayed speed was going down.

Quote:

Originally Posted by M3 Montreal

Are you using a 4g with the TomTom cradle? I would say it's very accurate as I looked at my speedo and 195 down the back straight is correct and so is the low 117 or so at turn 1. I'd say it's accurate for me.

Also had a very strong signal.

Doesn't sound like it, I believe TomTom only has a 1Hz rate. MaxL, is your 5Hz listed in the list of compatible GPS tools on Harry's site?

Jeff_DML · 08-31-2011, 01:10 PM

Quote:

Originally Posted by LateBraking

Doesn't sound like it, I believe TomTom only has a 1Hz rate. MaxL, is your 5Hz listed in the list of compatible GPS tools on Harry's site?

last time I looked, you had to jailbreak your iPhone to be able install a Bluetooth stack to support the 5Hz GPS modules. 5Hz would be sweet since you could hopefully get a more more usable version of your line.

Z K · 08-31-2011, 01:12 PM

Looks like you didn't overlay the data log onto the video? It'd look better with the overlay.

LateBraking · 08-31-2011, 01:14 PM

Geezuz, this tool is fancy and useful, but it's got all these features that I haven't figured out yet....haha.

MaxL · 08-31-2011, 05:32 PM

Quote:

Originally Posted by Jeff_DML

last time I looked, you had to jailbreak your iPhone to be able install a Bluetooth stack to support the 5Hz GPS modules. 5Hz would be sweet since you could hopefully get a more more usable version of your line.

Exactly, jailbroken iPhone plus external Bluetooth GPS data-logger. Everything accurate except for speed. It seems that speed accuracy issue is related to elevation changes, though - e.g. when I'm accelerating and the track starts to slope downhill or uphill, it believes that the speed decreases.

Montoya · 09-04-2011, 10:38 AM

Anyone use the newest version 14 yet? Looks like it became available just a few days ago- Sept. 2. Looks like a lot of functional improvements. Also noticed ORP is on the track list which wasn't before, so I'm going to use it next weekend!

Fen335i · 09-05-2011, 10:46 AM

Quote:

Originally Posted by Montoya

Anyone use the newest version 14 yet? Looks like it became available just a few days ago- Sept. 2. Looks like a lot of functional improvements. Alsosweet noticed ORP is on the track list which wasn't before, so I'm going to use it next weekend!

Sweet! I was waiting for ORP to be supported....I will be buying HLT too. I need to get a cradle though..hoping I can find something local.

Montoya · 09-06-2011, 10:50 PM

Quote:

Originally Posted by Fen335i

Sweet! I was waiting for ORP to be supported....I will be buying HLT too. I need to get a cradle though..hoping I can find something local.

Best Buy!

Fen335i · 09-07-2011, 11:56 PM

Quote:

Originally Posted by Montoya

Best Buy!

Which one? I saw the RocketFish window mount for iPhone...looks OK and says it works for the 4. (Without bumper)

M3 Montreal · 09-08-2011, 12:14 AM

Quote:

Originally Posted by Fen335i

Quote:

Originally Posted by Montoya

Best Buy!

Which one? I saw the RocketFish window mount for iPhone...looks OK and says it works for the 4. (Without bumper)

I bought the TomTom

Montoya · 09-08-2011, 12:33 AM

Quote:

Originally Posted by Fen335i

Which one? I saw the RocketFish window mount for iPhone...looks OK and says it works for the 4. (Without bumper)

The Tom Tom is compatible and works with HLT. There is info in this thread that covers what is compatible or not. The info is on the Harry's Lap Timer web site.

08-23-2011, 07:50 PM	#45
leo95se Captain 126 Rep 938 Posts Drives: '09 e92 M3, '15 F15 X5d Join Date: May 2009 Location: CT iTrader: (3)	Suction cup idea failure . Bmwcca won't allow them. So I'll have to make a mount for my headrest.
	Appreciate 0 Quote

08-25-2011, 01:07 AM	#49
ex10psi Private 4 Rep 62 Posts Drives: 2011 E90 M3 Join Date: Feb 2011 Location: WA iTrader: (1)	any lap timer apps for android phones? __________________ 2011 E90 M3 2004 996 GT3
	Appreciate 0 Quote

08-31-2011, 01:12 PM	#58
Z K Major General 1887 Rep 5,506 Posts Drives: E90 M3, G20 M340i Join Date: Jul 2011 Location: San Francisco iTrader: (3)	Looks like you didn't overlay the data log onto the video? It'd look better with the overlay.
	Appreciate 0 Quote

08-31-2011, 01:14 PM	#59
LateBraking Brigadier General 324 Rep 3,882 Posts Drives: Relatively Quick. Join Date: Sep 2008 Location: U.S.A. iTrader: (27)	Geezuz, this tool is fancy and useful, but it's got all these features that I haven't figured out yet....haha.
	Appreciate 0 Quote

09-04-2011, 10:38 AM	#61
Montoya Lieutenant 52 Rep 574 Posts Drives: 2015 GT3 Join Date: Apr 2009 Location: Portland iTrader: (0)	Anyone use the newest version 14 yet? Looks like it became available just a few days ago- Sept. 2. Looks like a lot of functional improvements. Also noticed ORP is on the track list which wasn't before, so I'm going to use it next weekend! __________________ '08 E92 IB, Gone '10 GT3 now in my garage! '10 X5 3.5D '12 E91 Xi Wagon MT sports package
	Appreciate 0 Quote