Things you always wanted to know the answer to [Vol. 3]
Discussion
walm said:
Googling seems to give a massive range for acceleration of a jet.
The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
Now we're getting close. I'm not talking about 'beating' the jet, but simulating the increasing thrust down the runway. What would you need? 700bhp? 800bhp?The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
popeyewhite said:
walm said:
Googling seems to give a massive range for acceleration of a jet.
The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
Now we're getting close. I'm not talking about 'beating' the jet, but simulating the increasing thrust down the runway. What would you need? 700bhp? 800bhp?The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
What you can't do is simulate the almighty shove of a jet engine, because cars haven't got jet engines.
popeyewhite said:
walm said:
Googling seems to give a massive range for acceleration of a jet.
The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
Now we're getting close. I'm not talking about 'beating' the jet, but simulating the increasing thrust down the runway. What would you need? 700bhp? 800bhp?The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
150 mph then I would think something like a 335 would be comparable but 180 then you must surely be in supercar territory.
98elise said:
Fun Bus said:
I could imagine a Tesla P100D with Ludicrous mode would manage it well too.
That and a bit more, it has the same acceleration as Rita Queen of Speed (linear motor launch coaster) 
I know a few people have reported vision problems during Ludicrous Mode acceleration!
popeyewhite said:
walm said:
Googling seems to give a massive range for acceleration of a jet.
The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
Now we're getting close. I'm not talking about 'beating' the jet, but simulating the increasing thrust down the runway. What would you need? 700bhp? 800bhp?The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
There are some youtube vids of "fast" takeoffs taking just ~21 seconds (plenty far slower).
That's Gallardo / 911 turbo type acceleration.
http://www.ferrarichat.com/forum/general-automotiv...
SpeckledJim said:
popeyewhite said:
walm said:
Googling seems to give a massive range for acceleration of a jet.
The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
Now we're getting close. I'm not talking about 'beating' the jet, but simulating the increasing thrust down the runway. What would you need? 700bhp? 800bhp?The feeling that is completely different is that the acceleration INCREASES over time in a plane but peaks far earlier in a car.
Regular top of the range saloon cars can easily beat most airliners 0-60 and 0-100 but beyond that get spanked - very generally.
What you can't do is simulate the almighty shove of a jet engine, because cars haven't got jet engines.
popeyewhite said:
Now we're getting close. I'm not talking about 'beating' the jet, but simulating the increasing thrust down the runway. What would you need? 700bhp? 800bhp?
Massively dependent on how heavy your vehicle is of course. Fastest acceleration I've ever experienced was with probably about a 100bhp diesel but a very light vehicle resulting in about 2.5 seconds to 60, the key to that being leave the engine, clutch and gearbox in place and use a couple of thousand feet of cable to pull yourself towards it 
Plenty of motorbikes managing similar acceleration from <200bhp but tend to loose out at higher speeds due to aerodynamics.
SpeckledJim said:
You can get 'increased thrust' by simply using more throttle as you go faster, regardless of how much power the car has.
What you can't do is simulate the almighty shove of a jet engine, because cars haven't got jet engines.
???What you can't do is simulate the almighty shove of a jet engine, because cars haven't got jet engines.
Genuinely baffled by this comment.
Throttles aren't limitless! Eventually your foot is on the floor - what then?
And you absolutely can "simulate the almighty shove" because that shove isn't particularly almighty.
Hence the very slow 0-60 times and the fact that plenty of cars are faster to 150mph than a 747, as above.
Sure, beyond 150mph the 747 is kicking ass but up to that point there are plenty of cars with more "almighty shove" aren't there?
walm said:
SpeckledJim said:
You can get 'increased thrust' by simply using more throttle as you go faster, regardless of how much power the car has.
What you can't do is simulate the almighty shove of a jet engine, because cars haven't got jet engines.
???What you can't do is simulate the almighty shove of a jet engine, because cars haven't got jet engines.
Genuinely baffled by this comment.
Throttles aren't limitless! Eventually your foot is on the floor - what then?
And you absolutely can "simulate the almighty shove" because that shove isn't particularly almighty.
Hence the very slow 0-60 times and the fact that plenty of cars are faster to 150mph than a 747, as above.
Sure, beyond 150mph the 747 is kicking ass but up to that point there are plenty of cars with more "almighty shove" aren't there?
If you're flat-out from the b of bang, then the sensation of thrust in a car will reduce as your speed climbs. The only way to increase the rate of acceleration as your speed increases is to increase the amount of power you are deploying. The only way to do that is hold some back at lower speeds.
Once your foot is flat on the floor, then one's little experiment in mimicking a jet is over!
RE almighty shove - yes and no, I suppose. From what I can find, the power to weight ratios are similar between a laden 747 at take-off and, say, an Audi RS6, but once aerodynamics come into play above say 60mph, there's a huge gulf in acceleration (and, obviously, top speed)
some autoglass vans I see have huge long roof boxes fitted.
to my simple mind, windscreens are well, windscreen shaped. so they must be in the van.
IF rubber seals are used, they'd fit in a carrier bag.
so whats in the massive long roof box ? they're not moon lighting as plumbers and doing gas jobs surely and thus need copper pipe !
to my simple mind, windscreens are well, windscreen shaped. so they must be in the van.
IF rubber seals are used, they'd fit in a carrier bag.
so whats in the massive long roof box ? they're not moon lighting as plumbers and doing gas jobs surely and thus need copper pipe !
98elise said:
Fun Bus said:
I could imagine a Tesla P100D with Ludicrous mode would manage it well too.
That and a bit more, it has the same acceleration as Rita Queen of Speed (linear motor launch coaster) I know a few people have reported vision problems during Ludicrous Mode acceleration!
That shifts.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
https://www.youtube.com/watch?v=Kfg4GWlNlzY
SpeckledJim said:
RE almighty shove - yes and no, I suppose. From what I can find, the power to weight ratios are similar between a laden 747 at take-off and, say, an Audi RS6,
That's kind of what I was looking for.SpeckledJim said:
but once aerodynamics come into play above say 60mph, there's a huge gulf in acceleration (and, obviously, top speed)
A tuned RS6 could compete in terms of thrust (torque) with a 747 up to take off speed (say 170mph?). The torque curve on those things just builds and builds all the way to 190.SpeckledJim said:
but once aerodynamics come into play above say 60mph, there's a huge gulf in acceleration (and, obviously, top speed)
A tuned RS6 could compete in terms of thrust (torque) with a 747 up to take off speed (say 170mph?). The torque curve on those things just builds and builds all the way to 190.I expect the 747 will completely demolish the Audi once drag is a factor - because one 747 is an awful lot more aerodynamic and has a lot less rolling resistance than the equivalently powerful 200 Audis.
SpeckledJim said:
No, the amount of torque the Audi manages to put to the road reduces every time you change up a gear. Whereas the 747 just keeps going irrespective.
I'm talking about the way it FEELS, remember? And it feels very similar to a large aircraft.SpeckledJim said:
I expect the 747 will completely demolish the Audi once drag is a factor - because one 747 is an awful lot more aerodynamic and has a lot less rolling resistance than the equivalently powerful 200 Audis.
You better hitch a ride in a tuned RS6, I think you'll be in for a shock. It may be shaped like a brick but with 7-800 bhp and 900 lbft they shift. Do you know what the bhp or the lbft/ton of a 747 is?Gassing Station | The Lounge | Top of Page | What's New | My Stuff