group 6 '66 + LMP1 '13 Questions

[Fantuzzi]

Lets start at the beginning,

Group 6 sports car prototypes,

As I understand it there was no max capaity (and I assume no max power output), however there was a min weight, what was the minimum, Im guessing 580 ish kg, given I know Alfas 33/2 plus 906 was 580.

And something new,

Whats the max power for a LMP1 engine in 2013, I believe the diesels are 520.

Thanks oh and Ive looked at the rues and regs, didnt seem to state on the ACO's webistes document on max power, I take it its not free...

[robmlufc]

520bhp ish and 850nm for the R18 E-tron, plus 100bhpfrom the hybrid on top of that.
530bhp ish for the TS030 with an extra 300bhp from the hybrid motor

Power isn't limited, engine capacity and fuel tank size is.

[Red Firecracker]

Fantuzzi said:

Whats the max power for a LMP1 engine in 2013, I believe the diesels are 520.

LMP1 engines (in fact all ACO reg engines) are (under the 2012 regs) restricted on displacement (LMP1 not number of cylinders) depending on type of fuel and fuel cell size, with performance being managed or balanced by way of air flow restriction. There is no defined maximum, or minimum, BHP which would be a nightmare to police and be even more of a potential cock up than some BOP measures.

The formula is much more complex though as Hybrid systems need to be taken into consideration and additionally longevity needs to be balanced against performance. Le Mans is essentially a 24 hour sprint now, so a highly strung fragile engine may give you pole and local (or national if you're a dancing lion) media coverage, but a slightly slower/lower tuned engine/car has a greater chance of providing bragging rights come Sunday afternoon. Of course, that all ignores the nut holding the wheel, which if you're Hugh Chamberlain, is the bit to send you grey!

[Fantuzzi]

Thanks, I was reading that power levels would be controlled with in 2013, with reference to bhp levels.

I knew from reading the regs that capacity was controlled, and the cyliders were free.

Thanks for help

[Red Firecracker]

The 2013 regs additions for LMP1 include fuel flow (how fast it flows into the tank, not tank to engine), weight and air restrictors.