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  •  » 2+ day race is showing 5 days

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    Yesterday 6:48 am  #1

    michaelmorin
    Admiral

    Offline

    Registered: 7/04/2020
    Posts: 26

    2+ day race is showing 5 days

    I updated expediton to latest version yesterday.  When I optimized an established route last night it showed 5 days, when it should be 2-2.5 days. The boat speed in results is substantially lower than it should be for the wind conditions.  What could have changed from running the route the day before? I've looked at % of polar speed and they are set to 95% day and 90% night.  Some hints on what to check.  

     

    Yesterday 11:37 am  #2

    Ernie M
    Moderator

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    Registered: 11/05/2015
    Posts: 432

    Re: 2+ day race is showing 5 days

    Mike
    Did you use the same WX models and start the race at the same time?

    Extend Wind in time can give flucky results if the forecast ends on a low note.

    Just Guessin...
    E

     

    Yesterday 12:12 pm  #3

    michaelmorin
    Admiral

    Offline

    Registered: 7/04/2020
    Posts: 26

    Re: 2+ day race is showing 5 days

    Ernie, I used the GFS model for last several days including the two that both gave me 5 day races.  Started at same day and time.  Because I used GFS for 5-6 days, it shouldn't have been an extended wind situation.
    Thanks for responding.  I will be moving to the computer on the boat in a short time.  I have been using the backup software.  So hopefully not going to happen on it. I wondered if it had something to do with the version update.  

       •Thread Starter
     

    Yesterday 12:45 pm  #4

    Nick
    Moderator

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    Registered: 9/16/2015
    Posts: 3,451

    Re: 2+ day race is showing 5 days

    Two other people have seen that, but when I try with their data, polars and route it all works out ok.

    Maybe email me with the details.

     

    Yesterday 4:45 pm  #5

    Nick
    Moderator

    Offline

    Registered: 9/16/2015
    Posts: 3,451

    Re: 2+ day race is showing 5 days

    There appears to be a bug in the air density calculation. Will investigate.
     
    In the meantime, disable the Adjust polar for Air Density option.
     

     

     

    Yesterday 5:57 pm  #6

    Nick
    Moderator

    Offline

    Registered: 9/16/2015
    Posts: 3,451

    Re: 2+ day race is showing 5 days

    Have fixed the air density calculation.

     

     

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