Does anyone have 1990's F1 engine torque graphs? I've only found the Mclaren MP4/4.
The rest of the car's just has horse power and the RPM, but I was wondering if there is any data out there with the entire torque graph?
Does anyone have 1990's F1 engine torque graphs? I've only found the Mclaren MP4/4.
The rest of the car's just has horse power and the RPM, but I was wondering if there is any data out there with the entire torque graph?
If you have the power curve, you can calculate the torque curve.
At a given engine speed,
Power = Torque x speed
Torque = Power/speed
It would be great if you post up any graphs you have.
Re: 1990's F1 Engine Torque graphs
Posted: 10 Dec 2020, 00:15
by IMEP_Kingpin
This is from the Honda RA122E engine. The picture is from the 1993 Honda Technical Review (Japanese language). https://imgur.com/a/hR24FUf
Re: 1990's F1 Engine Torque graphs
Posted: 11 Dec 2020, 04:11
by gruntguru
Any idea how close were the ratios used with that engine? It looks like it would like to stay between 13,000 and 15,000 rpm for best performance.
Re: 1990's F1 Engine Torque graphs
Posted: 12 Dec 2020, 04:02
by IMEP_Kingpin
Grunt, are you taking about transmission ratios? The paper is only about the engine alone.
It'd be nice to know what they were.
fwiw Nye's Autocourse book says (of the 1991 season) ....
'extensively modified 14800 rpm V12 in time for the Hungarian GP '. with actively controlled variable-length induction trumpets the early hole in the torque curve's mid-range had been adequately filled and from Spa forward the RA121E in its latest form regained superiority ... securing Honda's fifth successive share in F1 WC title'
I suspect the 1990's and 1991's car maybe 1992's car had special fuel for qualifying that gave the car's an extra 20HP.
Re: 1990's F1 Engine Torque graphs
Posted: 31 Dec 2020, 21:19
by IMEP_Kingpin
SO document says this:
Up to the Hungarian GP the fuel companies (Shell in Honda’s case) had continued to produce special “Petrols” (see Note 90 Sub-Note B). FISA then imposed a ban on any constituent not found in ordinary pump fuel. This “Real Petrol” dropped the RA122E/B power from 804 to 764 BHP (-5%).
Up to the Hungarian GP the fuel companies (Shell in Honda’s case) had continued to produce special “Petrols” (see Note 90 Sub-Note B). FISA then imposed a ban on any constituent not found in ordinary pump fuel. This “Real Petrol” dropped the RA122E/B power from 804 to 764 BHP (-5%).
The MP4/6 in 1991, did qualifying much quicker then in 1992 and Wiki it rates the engine 725–760 hp, so basically add 40HP for early and Late season qualifying. 765 at Imola 1993 1:21.877, 800HP at Suzuka doing 1:34:700 times. Makes sense. What doesn't make sense in 1992 with 764HP it only managed 1:23.086 at Imola, maybe it was the conditions, or bad luck.
Re: 1990's F1 Engine Torque graphs
Posted: 01 Jan 2021, 06:56
by Testdrive
Does anyone clear information about the 1994 Benetton Engine?
I've read that it had 740HP, 750HP at 14500RPM. I also read a comment on Youtube, he said it has 794HP at 14350PRM and about 460 of torque at 11600RPM at Imola 1994. I suspect it was 750HP. Shumi used a really small wing to get to 320KM on the straight. I've did test's at 796HP I was able to get the qualifying time. With 750HP, I was out about 0.350ms and that was with traction control and many tries. You have next to no grip, since the downforce is low.
Re: 1990's F1 Engine Torque graphs
Posted: 03 Jan 2021, 18:37
by IMEP_Kingpin
That was the Cosworth made Ford badged, EC Zetec-R 3.5
100mm bore and 55.7mm stroke.
730HP @ 13,800rpm
Whereas the 1994 Renault RS6 is not acknowledged to be a completely new engine, the Ford Zetec-R most certainly is. The eventual need for a very high-speed engine had been foreseen well before November 1991, at which time the very compact and lightweight Ford V12 began its testbench career. For several reasons, this was to remain a research exercise, but one which contributed significantly to future eight-cylinder development. Therefore, in mid-1992, the design of a very high-speed eight-cylinder HB successor engine, to be launched as the Ford Zetec-R, was initiated. This Is the Benetton power unit for 1994, and it must make the team confident of now being able to challenge Williams-Renault, McLaren-Peugeot, and all the rest, at a level not open to it in recent years.
Although, through Cosworth, Ford has always delivered more engine performance at the beginning of each season, the step-change which the Zetec-R is expected to bring to the early events of 1994 is probably unprecedented in the camp. And one can anticipate that its performance will improve as the season develops, and more of the engine’s potential is realized. The Zetec-R, initially with a 14,500rpm limit, can be expected to develop maximum power in the 13,500-14,000rpm range. Early in its career and at a conservative estimate, it should thus produce 30-35bhp more than the best HB level – bearing in mind the stricter fuel formulation rules this year.
It looks like its pulling 764HP at 14,440RPM. I might mod this data into the Assetto Corsa Mod. 