RE: How fast is the Hennessey Venom GT? Err... very
Discussion
ph123 said:
Guvernator said:
Very impressive but why was he short-shifting? Surely in an acceleration test you should be using the entire rev range?
Not if the whole shebang is so badly thought out, it cannot transmit it's power to the road ...70-200 in 10 seconds is "only" averaging 0.6g. Even assuming no down-force, I'm quite surprised it's traction limited at the point of the last gear change. I think mid engined RWD setups are usually good for about 0.7-0.8g of traction? It did look like he was struggling to put the power down though, which does beg serious questions of the setup.
Or have I calculated something wrong?
Or have I calculated something wrong?
Edited by kambites on Monday 12th September 11:49
I wonder if it was clutch slip when the revs flare a bit in the taller gears? Unless the road was bumpy i think it's pretty unlikely to be wheelspin at that speed. Also, without a proper industry std calibrated speed measurement, it's just some numbers (big fast numbers, but just numbers ;-)
johnpeat said:
I'm getting old, because my first thought was "interesting they chose the speed range I have NO interest in whatsoever" 
I see your point but with a stretched Elise body and 1200 odd bhp, the speeds you're probably interested would no doubt make it a very short video clip. It's the big speeds which show when a car really has massive power. It takes massive shove to accelerate that hard, that fast.
I'm impressed they can make that much power, that they only have to rev to just over 5000rpm, they can get from 70-215 in 10 seconds and can a water temperature of just 76 degrees.
This lot need to show the masses of VAG engineers who built the Veyron how it's done.
Or more likely, it's all total bull..................
This lot need to show the masses of VAG engineers who built the Veyron how it's done.
Or more likely, it's all total bull..................
RobCrezz said:
Dagnut said:
..or its not making power high in the rev range which is highly likely with high pressure turbos
??Why do you think high pressure turbos dont make power high in the rev range?
Megaflow said:
I'm impressed they can make that much power, that they only have to rev to just over 5000rpm, they can get from 70-215 in 10 seconds and can a water temperature of just 76 degrees.
This lot need to show the masses of VAG engineers who built the Veyron how it's done.
Or more likely, it's all total bull..................
Cynic!! This lot need to show the masses of VAG engineers who built the Veyron how it's done.
Or more likely, it's all total bull..................
Look at the Ultima. That can do silly speed etc without the need of VAG's cleverness. Difference is that the Veyron still drives like a plush apartment block rather than a nuclear go-kart.
The Veyron is the victim of it needing to be effectively everything to all people.
Dagnut said:
big turbos mated to a big V8 like that it will make most of its torque midrange..unless Hennessey have a sequential system ..which I doubt..I'd say they slapped 2 massive turbos to either side of an LS..he was shifting at 6k which is where it would be running out of steam
I wouldn't read too much into short shifting. Maybe they are trying to keep the gearbox in one piece or maybe just because its a brand new setup that is untested yet! With the correct heads and Cam setup a LS engine can easily rev much higher than this. even from the factory the LS7 can rev to around 7K. Big turbos will only push the power graph further to the right (ie make power later in the rpm range) as they take much longer to spool up.Gassing Station | General Gassing | Top of Page | What's New | My Stuff