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Benz copying Top Gear? with CG?

How was that copying Top Gear?

People have been saying for decades "Our cars are fast enough/enough downforce/whatever to drive upside down"
 
coxmaster said:
No ive seen it (great episode too 😀 )
I'm just saying Top Gear isnt the only group to do it. I saw a video attempting the same thing well before Top Gear did it. Of course I cant find that video now
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I can't believe people are knocking me for exaggerating :awe:
 
sdifox said:
I can't believe people are knocking me for exaggerating :awe:
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Its not you 😀

A friend of mine showed me this video yesterday and said that it was a copy of Top Gear. I just continued out argument from yesterday onto here 😛:biggrin:
 
there's a massive difference between "driving on the ceiling" and rolling a car once thru a tube. what top gear did was pretty easy, and the mb ad was fake. nobody will be driving on any ceilings until a tunnel is built for that purpose.
 
That Mercedes even if it did actually do that, it's not really driving on the ceiling from downforce so much as it is from momentum of a turn. I want to see a car that can really drive on the ceiling of a tunnel. They say an F1 car would have the downforce, but the engine would die quickly because the fuel is fed by gravity.
 
GoatMonkey said:
That Mercedes even if it did actually do that, it's not really driving on the ceiling from downforce so much as it is from momentum of a turn. I want to see a car that can really drive on the ceiling of a tunnel. They say an F1 car would have the downforce, but the engine would die quickly because the fuel is fed by gravity.
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(sigh).
F1 cars have this brand new invention that only NASA and the top racing teams in the world could afford.
So expensive, that if France did a cost analysis of it, Russia would go broke.

It's called fuel injection.


No seriously, what is different about F1 fuel injection that's highly dependent on gravity?
 
foghorn67 said:
(sigh).
F1 cars have this brand new invention that only NASA and the top racing teams in the world could afford.
So expensive, that if France did a cost analysis of it, Russia would go broke.

It's called fuel injection.


No seriously, what is different about F1 fuel injection that's highly dependent on gravity?
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I think he meant currently fuel is fed to the fuel pump by gravity.
 
Lmao. The fuel pickup is at the bottom of the tank dummy. As soon as you go upside down, all the fuel will slosh to the top of the tank and your pickup will be sucking air.
 
The Boston Dangler said:
not in an airplane nor in a race car. well maybe a "stock" car.
Click to expand...

It is for an F1 car which I think qualifies for a racecar.

"To prevent this, the tanks are fitted with internal chambers to baffle the effect. The chambers are independent of one another and have a trap door that acts as a “check valve” to prevent reverse flow. Gravity induced flows route the fuel from chamber to chamber toward the mechanical pump.

One of the concerns with fuel supply is engine starvation. The mechanical pump is outside the tank at the rear and is at the lowest point. These pumps require a minimum amount of fuel to be present in a collector in order to function properly. Some manufacturers require 6kg, but others can function properly with much less, perhaps as little as 3kg. When the tanks are full this isn’t a problem, but when the fuel level is low one must keep the fuel flow to the pump consistent."

http://www.formula1journal.com/2010/02/f1-fuel-tanks-by-flood1.html


In other words, if the car is upside down, the engine isn't getting any fuel.
 
i would have thought a car capable of sustaining 5g in 2 axis would not have a gravity-dependant fuel pickup. in either case, even a gravity fed, carbureted motorcycle would maintain power thru a loop, as at least 1g is exerted downward relative to the car.
 
The Boston Dangler said:
i would have thought a car capable of sustaining 5g in 2 axis would not have a gravity-dependant fuel pickup. in either case, even a gravity fed, carbureted motorcycle would maintain power thru a loop, as at least 1g is exerted downward relative to the car.
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loop is fine, there should be enough fuel in the line and then there will be a bit of a hiccup. We are talking sustained upside down driving. The down-force on the chasis of the F1 may be strong enough to stick the car to the roof of the tunnel given sufficient speed but it can't do anything about fluids in the car. And all the fluids are basically gravity fed.
 
sdifox said:
loop is fine, there should be enough fuel in the line and then there will be a bit of a hiccup. We are talking sustained upside down driving. The down-force on the chasis of the F1 may be strong enough to stick the car to the roof of the tunnel given sufficient speed but it can't do anything about fluids in the car. And all the fluids are basically gravity fed.
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no, there isn't a hiccup because as the car rolls, >1g is exerted on the entire body. the fuel never knows it's upside down. the other fluids like oil, coolant, compressed air etc. are robust against g loading.
 
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