Here's another video with the obd2 elm 327 fleabay scanner working.

Again please note this version of harrys is super old and again iPhone 5 maybe even a 4s

Bare in mind the quality of the data will be limited by the hardware. The iPhone 5s and 6, barring gps, are a hell of a lot more powerful than most standalone data loggers in terms of raw power.

And adding a Bluetooth gps module that has 5x or 20x the sampling rate is cake.

As far as video, the new gopros can do 4k, but I don't have a 4k player. So 720p or 1080p 60 fps is more than capable for me atm.

Just the sheer data capabilities at the touch of a finger are just staggeringly impressive.

Essentially the HLT + iPhone serves as a poor mans data acquisition engineer.

http://youtu.be/1-PkJVvxw0Q

 

Here's an example of just the elementary data that is available in the GUI immediately once you get off the track.

That is freaking impressive!!

Like I said before HLT is not a panacea, it does have its limits such as the stability but overall it is definitely worth the hassle. I use to work about someone ripping off my aim mychron since it was just Velcroed to my bike, now i just take my iPhone with me when I leave for lunch.

As far as capacity for shooting, the iPhone 6 has 128gb of space

Assuming a 2 minute lap at buttonwillow take 190 mb of data per lap at 720p, you can store approximately 653 laps, less 4 gb for OS space on a virgin iPhone 6 128 gb. That works out to 21 hrs of footage.

 

gptoyz,

Looks good. The difference with a gopro is better pq, that's all. It's like comparing a dslr to a phone camera w/ the same megapixels. Racechrono has much of the same data/logging as HLT. It logs all the data in one place on your phone just like HLT. We're sort of advocating the same thing. I like footage from behind the driver as you miss a lot of what goes on behind the wheel.

I think this thread got a little sidetracked and I apologize to the OP.

Here's a video from the fall: http://www.youtube.com/watch?v=U3ohpwnJGdI

 

I disagree that we got sidetracked.

Good solutions to help people get better are the best instruments to improvement.

Video and data logging is critical isolating bad driving vs bad knowledge. Bad knowledge or lack of track knowledge can be fixed and improvement realized immediately.

Lack of skill is a totally different area of long term improvement.

 

I think we agree that datalogging is critical/very helpful, I just didn't want to turn the thread into a discussion on datalogging/recordings as there are threads about that. Anyway, I think the OP has plenty of info now regarding datalogging.

 

I agree.

Seat time, focused on improvement.

I video many of my runs, and try to review, even between sessions. Car position, turn in location and turn in speed are all things I try to look at. I force myself, sometimes, to keep my eyes up - especially on fast corners.

Often, I work on trying to improve my turn in speed on just one corner. If it's the right corner, it translates to speed for half a lap. Sometimes I try to shorten my braking distance on just one corner.

I drive a 100 hp. vintage (1959) car on DOT street radials. When I bought the car, the prior owner advised that his best lap on Hoosiers at Lime Rock was 1:16. I'm at Lime Rock 4 to 6 times a year. My first year, I ran a single 1:24 and scared the wits out of myself. The next year I ran a 1:19 by the end of the season. The third year, I ran in the 1:18s and felt that was the car's limit on the theory that the Hoosiers were worth 2 seconds. The next year I ran in the 1:14s and thought I reached my personal limit, and had progressed beyond the car's limit. Last year, I ran in the 1:12s and allegedly had a 1:11 clocked by a corner worker. A big difference over five years.

I went to a professional racing school and that helped a bit. But most of the difference and confidence is simply from seat time and my trying to assess my own weaknesses and improve upon them. This year, I'll probably get an Aim Solo, as I think I'm ready for some data.

My simple advice: Go out as often as you can: Don't lift in the corner and keep the shiny side up.

Cheers

 

Well, on a AP1 with the OBDII version DL, I can confirm it works, but the data you get is limited. The throttle (actually TPS) data updates slowly and has low resolution so I end up with a very notchy TPS graph that's not very useful. Might as well just use forward G, which is a workable approximation of throttle position. I don't think there is a channel for brake. One thing I like is it can display coolant temp since our temp gauges are so useless. Another small benefit of the DL is it gets power from the OBDII plug, so you never have to worry about charging it. I really like that it "just works" and I never have to worry about it prior to plugging it in at the track. If your car has CANbus, that would probably give you much better data (not sure if Honda added that in 04 or 06?). Note the only difference between the OBD and the CAN version of the DL is the cable, and you can buy whichever cable separately if you want to switch it between cars or anything like that.

 

Maybe it is just AP1 (what I have) But I was pretty sure it was all years. They do however add new ECU's all the time, so check with a dealer to confirm

 

Maybe it is just AP1 (what I have) But I was pretty sure it was all years. They do however add new ECU's all the time, so check with a dealer to confirm
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IIRC it works directly with DBW 06+ cars given VSA and having wheel speed sensors. I could be wrong though, time to double check.

 

I was at an event with a certain pro driver. He gave me the best advice I'd ever gotten which was this: "If you keep braking in the same place, accelerating in the same place, expecting to get faster, it'll never happen". I got much faster after that. I also ended up putting the car into a wall lightly that weekend as well, but hey, thats all part of it. Use that advice with caution LOL.

You've got to go out there and keep pushing and keep making a mental note of what worked and what didnt work so that you can get faster that next lap. As others have said, this really only works well if you have a lap timer in the car and can get instant feedback. I'd recommend using a smartphone with an app at the very least, or stepping up to an AiM solo.