Lap Timing Equipment

[benm]

in your first post you said you just want quick laptimes as you're sick of waiting for the sheets at track days etc. if that's really the case then the mychron is for you.

I'd still take my PerformanceBox over a MyChron any day of the week.

Knowing split times as you lap is an absolute must so you can break the track up in to 3 sectors and work on then individually rather than aiming for an overall laptime but then having zero clue which part of the track you improved on. The additional data provided by the gps is fantastic too!

[djr81]

These any good?

http://www.qstarz.com.au/index_files/Page599.htm

[Beer Baron]

no idea. no experience with it. the only thing that strikes me straight away is that 5hz is ok, 10hz would be much better though as at the moment it's sampling only 5 times per second. sorry "up to" 5 times per second...

[tk80]

aussie dollar almost touching US$1 now....time to buy a performance box from the US for $500.

[djr81]

Yeah there is 10Hz stuff on their website but I am so old school I have NFI what any of it does.

Just want a decent data logger that uses GPS & allows me to feed in other signals like rpm, TPS & steering angle. Teh GTAAAAH's have all that already wired into their systems but unless you spend alot of coin there doesn't appear to be an easy way of getting it into a logger with GPS.

[semislickR32]

Thanks for the help. After weighing up the options I've decided I'm a data-junkie so will go with the performance-box for Google-Earth-Import action. Can't see it being of any real value but looks cool

As long as the lap times are pretty accurate and are readable on-screen, then the rest (including split times, data logging etc) is a nice-to-have bonus. $AUD is good too

[takai]

I use a Nokia phone with RaceChrono on it, paired with a Holux M1000B GPS at 5hz. Does an absolute treat for laptimes.

In the past ive also used the same GPS, with an EeePC and the guts of a Wii remote for a G-sensor. Worked brilliantly until someone stole the laptop at the track.

[scooby36]

interesting. so iv just confirmed after reviewing my video, that QR's timing is um, interesting

did a 4 lap uninterrupted run,

pause as i cross the finish line and write down the time on the video.

first lap = 2:02 = 122 seconds

end of 4th lap = 5:56 = 356 seconds

time to run 4 laps = 234 seconds, divided by 4 = 58.5 average.

QR's official timing:

59.155, 59.183, 59.899, 59.448 = 237.685 total.

3.6 seconds added over 4 laps. what the.

my racechrono GPS timing=

58.36, 58.26, 58.73, 58.48 = 233.83secs

i'll confirm my camera is accurate...

[hrd-hr30]

Thanks for the help. After weighing up the options I've decided I'm a data-junkie so will go with the performance-box for Google-Earth-Import action. Can't see it being of any real value but looks cool

As long as the lap times are pretty accurate and are readable on-screen, then the rest (including split times, data logging etc) is a nice-to-have bonus. $AUD is good too

pretty good price: http://hardtuned.net/forums/index.php?showtopic=464099

[tk80]

mine pbox arrived today off ebay....cost about $550 delivered from the states

first outing for it will be at the nscc track day this saturday.

[benm]

Make sure u download the track file from the website and take the charger as unfortunately it needs to be connected!

[hrd-hr30]

I had a terrible first experience with HarrysTimer last friday...... let me know how you can make it usable when you work it out Harry!

I bought a TomTom in-car kit like MrStabby has ($160) and the lap timing was spot on at Lakeside last weekend - eg fastest offical lap 59.17 vs iPhone 59.24. All the laps worked out that close to the offical times too. Split timing was good. The max and min speeds were realistic and consistent. Pretty happy. Would be much better if I could download the data onto the laptop... but it seems like you need an iPad + the "Trainer" app for that.

ps. any chance you've got some slicks I can buy/borrow/steal for the weekend? hehe

[hrd-hr30]

iPhone + Harry'sLapTimer + TomTom incar kit was accurate to within a few hundreths vs the transponder timing at Morgan Park last weekend.

So there you go Ben. Get yourself a TomTom in-car kit.

[MrStabby]

Good to hear its working for you too. FWIW you can export the data and email it to yourself - its the icon in the top left corner when you're in Lap List.

[hrd-hr30]

HA! cool, I'll try that as soon as I get home. Thanks!

[Marlin]

I bought a TomTom in-car kit like MrStabby has ($160) and the lap timing was spot on at Lakeside last weekend - eg fastest offical lap 59.17 vs iPhone 59.24. All the laps worked out that close to the offical times too. Split timing was good. The max and min speeds were realistic and consistent. Pretty happy. Would be much better if I could download the data onto the laptop... but it seems like you need an iPad + the "Trainer" app for that.

ps. any chance you've got some slicks I can buy/borrow/steal for the weekend? hehe

I'm sorry mate, I just saw this post! Of course I have some tyres you can boorow, but I'm afraid you might have needed them for Morgan Park?!

You know my number you should have called me!

You'll need to show me how to work the Harry timer properly mate, I'm a plug n play guy, not into learning new stuff. Seems anything new that goes into the grey matter, ejects something else of more importance!

[hrd-hr30]

no worries mate, I got some nice new Federals instead. Now I have to keep the car for another year or so!

Can do. Its pretty easy, and we might be able to bluetooth the track info across instead of making it from scratch. Going to Lakeside in Dec?

[Marlin]

Ok cheers

Unlikely, kinda pulled the car apart more. haha

[fatz]

performce box 550 delivered

?

any cheaper people i need something and dont want a becon?

[Marlin]

Fellas..... discuss! Thoughts?.... under $200

http://www.hioctaneracing.com/blog/2011/1/14/finally-an-affordable-gps-data-logging-lap-timer.html