BRC 1955 - The Golden Age [Qualifying R5]

[BlastersPewPew]

Well again I do really well on fuel economy, not much else though

[RobtheFiend]

Hmmm... I'm not the biggest gussler, both 07CobaltGirl and Pyrlix, , uses more fuel.
Pyrlix? More than 30 hp less, 165 kg lighter and 703cc smaller. What is going on?

[Packbat]

Okay - I'll want to look at how well this bears up in the race, too, but I think my gut instinct is pretty closely borne out: race fuel consumption is proportional to full-throttle fuel consumption at max power (i.e. economy/power at the max power RPMs times max power).

Race 1 Training Fuel Consumption Estimation.png (7.11 KiB) Viewed 3253 times

That said, there's more work to be done to produce a useable equation for other fan competitions, and whatever the equation is, it's going to be track-dependent. (Green Hell has more fuel consumption than other tracks, frex.) But even as rough as this is, a 0.9108 correlation is much, much better than the 0.6483 correlation to nominal fuel economy.

(Edit: For the record, the units on the Y-axis here are g/hr. X-axis is kg.)

[TheBobWiley]

My tire wear is as expected after reducing camber and switching to sports..... however I should have stayed on slicks with how slow my car is. Not looking good for this BRC

[RobtheFiend]

I'll put my hope on getting at least some points at Monza and Südschleife. The other three, not a f-ing chance.

[07CobaltGirl]

I burned 15 units (gallons?) of fuel in 10 laps. My front tires were at 66, rear tires at 72. I have the WORST car in the competition for wear & tear!!!! Stupid wheel spin....

[RobtheFiend]

Maybe you were channeling Jeremy Clarkson when you designed it? "POWWAARRR!!!!"

Edit: I think the unit is kg of fuel. 1kg = 1.32l = 0.35 gallon(us)

[Packbat]

Confirmed - it's kilograms. (I asked Der Bayer a while ago.)

Also, 07CobaltGirl, given that power is restricted per kilogram of vehicle, I think the more relevant fuel consumption stat is fuel/tonne - and you're barely over average (14.5 kg/tonne vs. an average of 13.5 kg/tonne).

Edit: As for the tyres ... well, one of the circuits is the Norisring, and that has approximately zero tyre wear, so....

[07CobaltGirl]

Yes, but my car likes the straights! Bonneville, anybody?

[RobtheFiend]

Yes, but my car likes the straights! Bonneville, anybody?

Try your entry on Monza. Won't be correct, because the differences in versions, but anyway. Was kinda nice to see the last part of the track, pretty much flat out all the way.

[RobtheFiend]

Just did a calculation. 20-6.37=13.63kg of fuel x1.32 = 17.99l -> 10 laps = 48.07 km -> 100/48.07=2.0803 -> 17.99x2.0803=37.42l/100km

37.42l/100km..... yeah.... don't think this will qualify as eco racing.
(6.29mpg(us))

[Packbat]

...I'm totally stealing that. Using the same conversions:

• Best economy was BlastersPewPew, at 16.5 l/100 km (14.3 mpg).
• Worst was 07CobaltGirl, at 43.2 l/100 km (5.44 mpg).
• The ratio of actual fuel consumed to nominal fuel economy ranged from a minimum of 2.64 (9.98 nominal, 26.3 actual) to a maximum of 5.05 (6.88 nominal, 34.7 actual).

[RobtheFiend]

Maybe a consumtion per liter of engine calculation would be fun.
If so, my engine would use (11.68l/100km)/Engine L. (37.42/3.203=11.68)
07CobaltGirl is a little better at (9.93l/100km)/Engine L. (43.2/4.349=9.93)
And BlasterPewPew would get (16.3l/100km)/Engine L. (16.5/1.015=16.3)
Hmmmm.... interesting.

[Packbat]

Oof, I haven't read out the displacements yet - I'll get back to you on that.

(Edit: I've got a massive spreadsheet full of empty cells to fill.)

[07CobaltGirl]

So, yeah, my car still sucks! hahahaha

I'm officially the worst car builder in Automation! (ok, not really, but still....)