Extreme Drag Racing

[salen00b]

I actually limited the top speed at 215.

[Killrob]

Well done Saleenoob!

No shit.......if you increase the weight, your 1/4 mile time decreases.....while it has a detrimental effect on your top speed!

One hell of a bug! I was going for the old drag racing formula - light body - big motor.

Not a bug, get your physics straight son more power and less weight only helps when you have the grip to back it up!

[Spool]

Hey Killrob! Definitely correct, I just tried a few combinations and trap speed and times seem to work the way they should in relation to weight - I was just a bit shocked 335 semi slicks with a +10 modifier couldn't hold it together that well. Does the coeffecient of friction constant you use in the sim change with the build date(eg 2014)? I could understand 1965 rubber being pretty average, especially for the torque involved.

Saleenoob, I've the trick of gearing it down to improve times but by slotting in an extra gear and then gearing it down so your terminal speed is at the 4th or 5th gear has the same effect and also gives the machine more legs for more circuit oriented competitions. I tried literally click by click on improving ultimate gearing/spacing to match terminal speed and 11.9 was all I could get. That extra 20 odd horsepower you had was just too much for me I think mate.

[Der Bayer]

The tyre friction coefficient indeed does increase over the years. If I remember correctly, it's 30% higher in 2020 than in 1940 and it scales linearly between these years.

[Spool]

Sweet as, it's just I'd pretty disappointed if I got to 2010ish and couldn't get a 3.0L Turboed I6 to crack 900+HP and 9 sec quarter miles on a tyre thats bigger then 12.5" wide.

[Killrob]

@Spool: I assume you are talking about aftermarket tires that are NOT on the production car? I know of no car manufacturer that puts really soft drag-race rubber on their production cars

[Spool]

http://www.hpi.com.au/streetchallenge

Mickey Thompson Street Radials fair enough because you can't even drive in the wet with them but a tyre like the Falken Azenis RT615 would definitely be a contender. Compare this to a Pirelli Pzero Trofeo which is a factory fitted tyre and it has better treadlife, straightline grip at a vastly cheaper price. The Azenis is not alone, Toyo R888s are also a sensible alternative for all weather driving while offering improved grip.

I just see a 900kg Datsun 120y on that list with a 3.0L turboed I6 with a twin cam head and 205mm wide street legal semi slicks on that list punching out 10.419 sec 1/4 and say.....why not Automation?

Remember, Pirelli once was (And still is) the aftermarket!

[Killrob]

What is its time in Automation? Did you make an exact-as-possible replica of it to see how many percent grip seem to be missing?

[Spool]

I'll get back to you on that one chief and message you with the results.

[Killrob]

I'll get back to you on that one chief and message you with the results.

That would be very helpful, thanks!