ASC 36: Road Race Day 6 wrap

The American Solar Challenge have released official stage 3 timings, summarised in the chart above (click to zoom). Michigan and Western Sydney are only minutes apart. ETS Quebec / Eclipse is in third, and gaining, thanks partly to the brilliant tactic of finishing Day 3 just a few metres from the Stage 2 finish line in Lander. Given the battery impound rules, this gave them substantial additional solar recharging.

Although the American Solar Challenge is far from over, I’m already giving my “Most Improved Team Gem” award to ETS Quebec / Eclipse (team 101, formerly 92). ETS came 18th at WSC 2013 (completing only 1530 km), and 8th at ASC 2016 (after Michigan, Dunwoody/SER, Toronto, Missouri S&T, Principia, AppState, and PrISUm). With their car Éclipse X, however, I think they have reached the world top 12 level, along with teams like Toronto and Stanford. I really hope to see them at WSC again soon! And, it must be said, their compatriots in team 55 (Poly Montreal / Esteban) are not far behind them.

In the Cruiser (MOV) class, the “cactus” diagram above tells the story so far. For each car, the first coloured bar shows the number of person-kilometres (distance driven times the average number of people in the car). Penalties have reduced this person-kilometre amount, so my calculation of the average number of people in the car is a little off. The second coloured bar shows the external energy input, which is the number of charges (including the pre-race charge) multiplied by the battery capacity. This bar points downward, because large values are bad. The third coloured bar, which is the final score, is the first bar divided by the second (all bars are scaled so that the highest value is 100%). Minnesota and Onda Solare have been running on the same basis as the Challenger (SOV) cars – no external recharging during the race. This is an incredible achievement!

However, the regulations specify that Cruisers should arrive in less than 53 hours (dashed green line in the top chart), with time penalties if they do not, and with cars deemed to have trailered after 62 hours (dashed pink line). On performance to date, I estimate that Minnesota will arrive in 59.0 hours, and Onda in 59.7, which means that Minnesota’s score will be multiplied by 30%, and Onda’s by 23%. Onda can still win if they recharge from the grid and finish the race at 70 km/h or so. Eindhoven’s Stella Vie could do that, but I’m not sure that the Italian car can. They may have left recharging too late, having allowed Minnesota to dictate what kind of race was going to be run.


Western Sydney wins Stage 3, Michigan recharges (picture credits: 1, 2)


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ASC 35: Road Race Day 6 (morning)


Wyoming to Idaho, Day 5 (picture credits: 1, 2)

Thursday 19 July (Idaho time) dawned with clear skies, promising a good day to finish Stage 3 of the American Solar Challenge.

For the Cruiser (MOV) class, the “cactus” diagram below tells the story for Stages 1 and 2. For each car, the first coloured bar shows the number of person-kilometres (distance driven times the average number of people in the car). The second coloured bar shows the external energy input, which is the number of charges (including the pre-race charge) multiplied by the battery capacity. This bar points downward, because large values are bad. The third coloured bar, which is the final score, is the first bar divided by the second (all bars are scaled so that the highest value is 100%). The numbers are very similar to those for Stage 1 alone. Update: the numbers on the web site have changed, so this chart has been recalculated to match.

Although the American Solar Challenge is far from over, I’m getting a head start on my personal Gem Awards for the race. The “Media Excellence Gem” goes to App State for their regular Facebook, Instagram, Twitter, and well-written blog posts.

And now that the tracker is working (except for the teams marked in grey), we can see that the cars are off and running. The first of them should reach stage end wihin minutes: