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Joined: Fri Mar 13, 2015 4:07 pm
Location: Eastern Time Zone, USA
Cars: I, being poor, have only my dreams
Re: BRC 1955 - The Golden Age [Qualifying R5]
First, assuming the Size dimensions listed are width x height x length, the not-Sprite (1.31 m x 1.04 m x 3.31 m) would have a 30.35 l tank, corresponding to something between 21.2 and 23.4 kg, depending on what density Der Bayer assigns to race fuel (the latter corresponds to 0.77 kg/l, which Google suggests as the default). In the first race of BRC 1965, various not-Sprites had starting fuel loads between eleven and twenty kilograms, more or less, but that includes a three-kilogram margin of safety; if we assumed that the fuel consumption figures are not grossly different in 1965, all of these cars would require one pit stop in a 75 minute race.
Second, looking at some of the other sports cars: the Ferrari-like car (1.79 m x 1.21 m x 4.56 m) would have a 57.14 l tank, or 44.0 kg. (Sorry, 07CobaltGirl, I think you would have to take a fuel stop as well.) The boxy sedan I used (1.79 m x 1.28 m x 4.17 m) would have a 52.25 l tank, or 40.2 kg. Many of the newer options would be in a similar range, I think, but the biggest two-door - the 70s Large Coupe - is 2.13 m x 1.22 m x 4.88 m for a whopping 72.76 l tank: 56.0 kg of fuel.
...actually, I went ahead and built a car in that body - 185 inch tyres, but otherwise according to the '55 rules - and got it down to 2:41.82 on the test track with a lean enough fuel mixture to keep fuel consumption according to my rule-of-thumb down to 48.6 kg over a 75-minute race, requiring no pit stops.
The new tyre model might change things, but in B151001, that's what I'm seeing.