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Tuesday, June 24, 2008

my winton lap time - GPS data logging analysis

thx shaun... thx to mic and you Razz i miss those practice nights woohooo we can do it again now that urs is manual Razz

UPDATE: My analysis and evaluation. *boring boring* Razz
i am testing this software RaceChrono on my 6110 navigator. its pretty accurate but sometime the GPS signal drops out once in a while Razz usually in between session when its idle, which doesnt bother me coz its free software. i can't complain when its free Razz

more info on the software: http://www.racechrono.com/

anyway this is the graph that i made based on the data that i extract from my GPS phone timer of my fastest lap on that day: 1:41.3s



and this is how it compared against two other driver that have used similar data logger.
1. DavidM (Blue colour) 350Z track, spring, catback, semis.
2. Takahasi (Red colour) RX8, coilover, exhaust, intake, semis, and few other minor mods.
3. flameboy (Orange colour) 350Z track, stock with semis.
it is based on my best lap of the day... not my PB....




too bad i didnt use this GPS timer when i had my mods... that way i could compare it with my current time... Sad


anyway the race track map from race chrono have 4 sections, and here they are:


and based on the sections time, i pick drizzle/damp session 1: lap 5,6. and dry session: lap 29,30,31,32,33,37. i pick those 8 laps coz they all have the closest time to highest section laptimes.



based on that:

  • on lap 5 i did fastest section 1 laptime of around 0.4sec faster than when i did my best lap.
  • on lap 31, for section 4, i did 0.7s faster than what i did in my best lap.
  • on lap 32, i did 1.1 s faster on section 2 compared to what i did on my best lap.
  • on lap 29 which is my best lap, i did the fastest section3


Theoriticaly... let me repeat again. theoritically (putting all other factor aside, like how sacrificing one sector will give more speed on the next sector, etc) if i add up all my best section laptime, 1:39.067s laptime is possible, THEORITICALLY...

which seems like a long shot for me as i am 2 second away from that Sad if only i can link everything together nicely, i would be happy with 1:40, it what i always wanted... Razz at least now with a stock zed, getting 1:40 would be too good to be true...

this just shows how much more i can improve and i am quite happy to see that i still have room to improve and where to focus on... i always knew there is always room for improvement, but the past 4 trackdays i have been stuck with 1:41 for a while and dont know what i am doing wrong that stopping me to go faster

before i have this GPS data logger, i only saw the total laptime... which all seem consistent... i have done plenty of 1:41s... but when i look closely per sections, i am super inconsistent...

now i have new hope to get better and i will focus on section 1 and 2 more next time... which is where i show the most inconsistency... then i can move onto section 4.... at the moment my section 3 seems to be quite consistent...

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