Day 4 update — Sioux Falls here we come

Some news from Leon Fainstein:

This was a typical solar car Rayce day. Starting at 5:00 am the team takes the car back to the place they stopped the day before. They set up for charging that starts at 6:30 and charge until 8:00 am. At that time they start driving. They will drive until 6:00 pm only stopping to change drivers. From 6:00 pm to 8:00 pm the team can charge the battery. Then they put the car in the trailer and drive to the hotel to eat, shower and sleep. The Rayce is an endurance test for man and machine. Only 6 more days to go. The team has decided that I should have to experience these long and difficult days for myself. They are planning to have me abducted by one of the other teams and forced to drive to Calgary with them.

They are 2 to 3 hours from Sioux Falls and should have no trouble making the stage stop on Thursday.

Creative problem solving

The battery pack developed a problem with three of the modules being drained before the rest, this severely limits the storage capacity. Many options were explored to solve the problem, one included not driving and balancing the cells during the time allotted for driving. Some rewiring solved the problem, and a cell balancing procedure was developed using wire resistors and some other electronic doodads. The next days may be very challenging if the forecast for rain is correct.


3 Responses to “Day 4 update — Sioux Falls here we come”

  1. Keep up the great work….and hope for some good weather..See u at the College

  2. Kudos to all of you for the problem solving and amazing effort. See you on Saturday.

  3. My Wife Left this note from James when i was out.
    James called at 2:00. They arriver at Sioux Falls at 12:30. They are at the Hotel. Tired. Having naps. Don’t call now. You can call back when they are charging the battery tonight.

    (I had called earlier today and no one answered and i started to panic.)
    I will make another post after talking with the team around 7:00pm.

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