Hell, there's plenty of road cars with over 100% VE at peak torque, it's pretty common, why do you think exhaust and intake lengths are tuned so carefully?Ferraripilot wrote: I've never heard of that without forced induction.
Tip velocity increases proportionally with volumetric efficiency. VE is increased this year due to less back pressure, and this is per Renault advising the new exhaust regs have afforded them slightly more power. So more VE = more air which means more volume being pushed through the same sized port as last year which means more velocity.
Which is much lower than the 170-210 m/s that the exhaust simulation shows. IF we apply this new data to the velocity gradient shown in the simulation, how fast do you think the exhaust gas is going to be when it gets to the diffuser? The average flow over the body is in the range of 50-70 m/s.kilcoo316 wrote:Well, if you assume the overfill (VE) is 125% and the exhaust temp is 200 degC:
18000 rpm => 84 m/s => 187 mph
Ferraripilot wrote:hardingfv32 wrote:Up to 115-130% normally aspirated is possible with a good intake and exhaust system.Ferraripilot wrote:No. Getting to 95% is quite an achievement.
Brian
I've never heard of that without forced induction.
Tip velocity increases proportionally with volumetric efficiency. VE is increased this year due to less back pressure, and this is per Renault advising the new exhaust regs have afforded them slightly more power. So more VE = more air which means more volume being pushed through the same sized port as last year which means more velocity.
Yes, you are right that that is the allowable range.bhallg2k wrote:It's actually +/- 10 degrees when viewed from above and +10 to +30 degrees when viewed from the reference plane.Adrian Newby wrote:I have looked at the exhaust, in many pictures, and it points 10 degrees outward and 10 degrees upward, to the letter of the law.
I think we're beat on this, man. Look at the last picture I posted.
Please restrict comments to the car.bhallg2k wrote:I guess I needed to be a little more explicit.
I think the "inboarders" have won the day.
bhallg2k wrote:Are you kidding me? Is that a joke?
Or are you really that dense?