FORUMula1.com - F1 Forum

[richindarlo]

I have been asked how much torque a Brawn produces. I really cant find out anywhere. any ideas?

[scotty]

Truth is, the only guys who will know (or indeed have a truly good idea) are the Mercedes guys who deal with the engines... we can only speculate and guess really! From everything i have read, i reckon it'd be around the 250 - 280 ft/lb mark with these V8's. I may be completely wrong though, it's something i'd like to know for definite myself!

[texasmr2]

I would guess that your in the ballpark Scotty. I'll look into it and ask some member's of another forum who have friends that work for F1 teams.

[Rivelution]

Truth is, the only guys who will know (or indeed have a truly good idea) are the Mercedes guys who deal with the engines... we can only speculate and guess really! From everything i have read, i reckon it'd be around the 250 - 280 ft/lb mark with these V8's. I may be completely wrong though, it's something i'd like to know for definite myself!

No way, It has to be way higher than that, thats how much torque is in a Mitsubishi Evo. From what I've heard the v8s produce somewhere in the 700 hp range, so the torque cant be that far behind. My educated guess would be in 500-600 ft/lb range maybe even higher.

[texasmr2]

Truth is, the only guys who will know (or indeed have a truly good idea) are the Mercedes guys who deal with the engines... we can only speculate and guess really! From everything i have read, i reckon it'd be around the 250 - 280 ft/lb mark with these V8's. I may be completely wrong though, it's something i'd like to know for definite myself!

No way, It has to be way higher than that, thats how much torque is in a Mitsubishi Evo. From what I've heard the v8s produce somewhere in the 700 hp range, so the torque cant be that far behind. My educated guess would be in 500-600 ft/lb range maybe even higher.

It may very well be higher but not much more, torque is normally higher in large displacement engines ie the bore and stroke and even higher if the engine has forced induction, the turbocharger makes up for both of those in small displacement/stroke engines.

The F1 engine produces its hp by rpm not displacement and it's performance is mainly do to that aswell as the weight of the car. The longer the stroke of an engine will produce more inertia to the crankshaft thus leading to more torgue.

TORQUE = HP x 5252 ÷ RPM so lets just say the F1 2.4ltr has 750hp ok?
So 750hp x 5252 = 3939000 right? Then 3939000 divided by 18K rpm = 218.83 ftlb's of torque.

[Rivelution]

Thats amazing if what you said is true tex. But I still have a hard time believing that current F1 cars produce so little torque though.



I guess F1 cars are the only cars that go against the saying, horsepower sells cars, torque wins races.

[bud]

good work tex

[texasmr2]

Thats amazing if what you said is true tex.

Nah it's not amazing all it takes is an understanding of how engines make hp versus torque. The three basic principles of HP are 'air-fuel-spark'. An engine will produce more torque if the stroke distance from TDC to BDC is increased. Allow me to simplify this aspect ok? If a piston has a shorter path to travel for full combustion the force needed to 'PUSH' the piston back down to BDC will be less, ie less rotational inertia on the crankshaft ie less torque. Lets break this down to realistic terms ok? If you were to punch me would your 'jab' or 'fully cocked punch' have more of an effect?

[RA Dunk]

Thats a pretty good explanation about the longer stroke . You gain an increase in swept volume, and a longer stroke means more torque, due to the extra throw on the crank.Tex but im in agreement with Rivolution here, I would expect an F1 car too make way more than that considering a 2.oL Impreza will make around 300LB/FT and doing a 2.5 conversion will make around 360LB/FT on the same car just due to the increase in bore size, remember there is no replacement for displacemnt

Im off to surf the depths of google for an answer

[RA Dunk]

Well after a search and a read on various sites i now stand corrected, looks like Tex was right enough

[texasmr2]

Thats a pretty good explanation about the longer stroke . You gain an increase in swept volume, and a longer stroke means more torque, due to the extra throw on the crank.Tex but im in agreement with Rivolution here, I would expect an F1 car too make way more than that considering a 2.oL Impreza will make around 300LB/FT and doing a 2.5 conversion will make around 360LB/FT on the same car just due to the increase in bore size, remember there is no replacement for displacemnt

Actually you answered you own question with you comment concerning 'swept volume'. Swept would mean the 'take a deep breath' and the volume would mean how much did you take in and can release, I love talking about engines

[RA Dunk]

I love talking about engines

yup same here, only reason a knew the bit about the swept volume part is i did a bit of research about stroker kits a few months back before placing an order for one

[richindarlo]

Thanks people! really appreciate the info

[texasmr2]

I love talking about engines

yup same here, only reason a knew the bit about the swept volume part is i did a bit of research about stroker kits a few months back before placing an order for one

Not to go OT but what engine are you 'stroking'?

Thanks people! really appreciate the info

Alot of knowledgeable members here bud and WE are always glad to help .

tex

[Rivelution]

Thats amazing if what you said is true tex.

Nah it's not amazing all it takes is an understanding of how engines make hp versus torque. The three basic principles of HP are 'air-fuel-spark'. An engine will produce more torque if the stroke distance from TDC to BDC is increased. Allow me to simplify this aspect ok? If a piston has a shorter path to travel for full combustion the force needed to 'PUSH' the piston back down to BDC will be less, ie less rotational inertia on the crankshaft ie less torque. Lets break this down to realistic terms ok? If you were to punch me would your 'jab' or 'fully cocked punch' have more of an effect?

My fully cocked punch will have more of an effect!! But I get what you're saying though tex, thanks for explaining it.