Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Onway track - no circuit

is there a way to get lap times on a oneway track? I've tried out racechrono on a local hill road. Start is at the submontane, finish at the summit. I go backwards the same way. I've defined start and finish line, but I got no lap times. What I am doing wrong?
Thanks in advance.



  • edited June 2009
    Hi! Just set the start line and finish line and it should work.

    Notice the traps are uni-directional as default, so you need to go through them same way as when setting them. If you went the other way when setting them, you can disable the "uni-directional" setting from trap settings, or rotate the trap 180 degrees.

    If you want to go same track two ways (up and down), I recommend you create two separate tracks. This way the graph analyzing works much better.

    I hope this solves your problems.
  • edited June 2009
    Hi aol,

    thanks a lot for your assistance. I've followed your instructions as well as the manual on this website.
    But.... at the end there are no lap times so far. May I send you my my session, plot, nmea and track files for checking? Maybe there is something wrong with my installation on my PDA or with something I do not know at the moment. By the way, I am using my internal GPS which as a 0.3 Hz rate? Does it matter in that case?

    Greetings from Germany,
  • You may send me the files to tracks(at), and I will take a look.

    That 0.3 Hz GPS sounds it might be the reason. I remember vaguely programming the traps so that they are not registered if there is not near enough plot...

    Can you configure the GPS back to 1 Hz, or is it hard coded like that?
  • I've sent you the tracks and sessions by mail. I also tried the desktop program, but the same problem. So there must be something wrong with the data for some reason.
  • Hey aol, today my new BT GPS 818X arrived. What can I say.... it works like hell. Anyway, thanks a lot for your assistance. The software is great... I promise, by the end of this season I will donate something!
  • edited June 2009
    I'm glad you like the software! I'll be waiting for that donation! :) :)

    BTW: I won't fix the issue with 0.3 Hz GPS as no one else has complained yet (should be very rare problem, as almost all GPS receivers are at least 1 Hz). The RaceChrono engine does not register the crossing of the traps, as the plots are too far apart time wise, and thinks the data is not reliable enough.
Sign In or Register to comment.