Author Topic: Try and wrap your head around this.  (Read 922 times)

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Offline trueblue

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Try and wrap your head around this.
« on: July 21, 2015, 03:01:17 AM »
A mate of mine sent me this, it's just plain amazing. ;D

TOP FUEL DRAGSTER FAST FACTS
ACCELERATION PUT INTO PERSPECTIVE

* One Top Fuel dragster 500 cubic-inch Hemi engine makes more horsepower than the first 4 rows at the Daytona 500.

* Under full throttle, a dragster engine consumes 11.2 gallons of nitro methane per second; a fully loaded 747 consumes jet fuel at the same rate with 25% less energy being produced.

* A stock Dodge Hemi V8 engine cannot produce enough power to merely drive the dragster’s supercharger.

* With 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into a near-solid form before ignition. Cylinders run on the verge of hydraulic lock at full throttle.

* At the stoichiometric 1.7:1 air/fuel mixture for nitro methane the flame front temperature measures 7050 degrees F.

* Nitro methane burns yellow. The spectacular white flame seen above the stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases.

* Dual magnetos supply 44 amps to each spark plug. This is the output of an arc welder in each cylinder.

* Spark plug electrodes are totally consumed during a pass. After 1/2 way, the engine is dieseling from compression plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by cutting the fuel flow.

* If spark momentarily fails early in the run, unburned nitro builds up in the affected cylinders and then explodes with sufficient force to blow cylinder heads off the block in pieces or split the block in half.

* Dragsters reach over 300 MPH before you have completed reading this sentence.

* In order to exceed 300 MPH in 4.5 seconds, dragsters must accelerate an average of over 4 G’s. In order to reach 200 MPH well before half-track, the launch acceleration approaches 8 G’s.

* Top Fuel engines turn approximately 540 revolutions from light to light!

* Including the burnout, the engine must only survive 900 revolutions under load.

* The redline is actually quite high at 9500 RPM.

* THE BOTTOM LINE: Assuming all the equipment is paid off, the crew worked for free, & for once, NOTHING BLOWS UP, each run costs an estimated $1,000 per second.

The current Top Fuel dragster elapsed time record is 4.441 seconds for the quarter-mile (10/05/03, Tony Schumacher). The top speed record is 333.00 MPH (533 km/h) as measured over the last 66′ of the run (09/28/03, Doug Kalitta).

Putting this all into perspective:

Lets say the you are driving the average $140,000 Lingenfelter twin-turbo powered Corvette Z06.

Over a mile up the road, a Top Fuel dragster is staged & ready to launch down a quarter-mile strip as you pass by it. You have the advantage of a flying start. You run the ‘Vette hard up through the gears and blast across the starting line & pass the dragster at an honest 200 MPH. Just as you pass the Top Fuel Dragster the ‘tree’ goes green for both of you.

The dragster launches & starts after you. You keep your foot down hard, but you hear an incredibly brutal whine that sears your eardrums & within 3 seconds the dragster catches & passes you. He beats you to the finish line, a quarter-mile away from where you just passed him. Think about it – from a standing start, the dragster had spotted you 200 MPH & not only caught, but nearly blasted you off the road when he passed you within a mere 1320 foot long race!

That’s acceleration!
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Offline petercb750

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Re: Try and wrap your head around this.
« Reply #1 on: July 21, 2015, 03:11:17 AM »
Crazy sh1t eh.
I read a similar thing with a different example...motogp bike arriving at the tree at 300kph, then getting blasted off the track as the drag car catches and passes him before the line.
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Offline faux fiddy

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Re: Try and wrap your head around this.
« Reply #2 on: July 21, 2015, 06:05:24 AM »
Mind boggling.
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Offline strynboen

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Re: Try and wrap your head around this.
« Reply #3 on: July 21, 2015, 06:16:58 AM »
its 60 years hard Work and brainwork.

.and some dead and burned drivers..vho make it real.
..they just gets farster year after year..does it end..g forces can not be fixed..they kill..
i kan not speak english/but trying!!
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Offline vfourfreak

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Re: Try and wrap your head around this.
« Reply #4 on: July 21, 2015, 06:54:32 AM »
You really need to know what you are doing to get behind the wheel of one of those.

Fair play to them.

Kev

Offline Duke McDukiedook

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Re: Try and wrap your head around this.
« Reply #5 on: July 21, 2015, 07:56:18 AM »
the fuel mixture is compressed into a near-solid form before ignition.

I have to take issue with that statement. The laws of thermodynamics do not allow this to happen.
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Offline Steve F

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Re: Try and wrap your head around this.
« Reply #6 on: July 21, 2015, 09:37:23 AM »
the fuel mixture is compressed into a near-solid form before ignition.

I have to take issue with that statement. The laws of thermodynamics do not allow this to happen.
I never went to law school, so what does that mean in layman's terms?  ;)

Offline Duke McDukiedook

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Re: Try and wrap your head around this.
« Reply #7 on: July 21, 2015, 11:29:41 AM »
Maybe they mean completely liquid due to the compression of the air and liquid fuel?
I don't see compression turning a liquid and gas into a solid based on thermodynamic principles.
It has been a while since I had that thermo class tho.  :P
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Offline Bailgang

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Re: Try and wrap your head around this.
« Reply #8 on: July 21, 2015, 03:05:37 PM »
Another crazy T/F fact is that their clutches don't lock up one to one with the engine until the car is nearly 3/4 of the way down the track, if they fully engaged any sooner they'd smoke the tires. For me watching drag racing on TV is boring but watching it at the track itself is indeed a spectacle. I've been to the US Nationals at Indy (Clermont actually) a few times a number of years ago and all I can say is television doesn't even come close at representing the sensation of a T/F dragster or funny car compared to actually being there, you the spectator literally gets hit with a wall of sound when they launch so much so that it's hard to describe.

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Offline 72 yellow

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Re: Try and wrap your head around this.
« Reply #9 on: July 21, 2015, 05:55:32 PM »
Another crazy T/F fact is that their clutches don't lock up one to one with the engine until the car is nearly 3/4 of the way down the track, if they fully engaged any sooner they'd smoke the tires. For me watching drag racing on TV is boring but watching it at the track itself is indeed a spectacle. I've been to the US Nationals at Indy (Clermont actually) a few times a number of years ago and all I can say is television doesn't even come close at representing the sensation of a T/F dragster or funny car compared to actually being there, you the spectator literally gets hit with a wall of sound when they launch so much so that it's hard to describe.


+1 You have to be there.  And the nitro fumes will give you a buzz.

Offline vfourfreak

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Re: Try and wrap your head around this.
« Reply #10 on: July 21, 2015, 06:52:16 PM »
Addition to bucket list.

Kev

PS just to witness, not to drive.

Offline Don R

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Re: Try and wrap your head around this.
« Reply #11 on: July 21, 2015, 10:20:12 PM »
 Nitro fumes, burns your nose and lungs, makes your eyes burn and water, makes your heart race and people run toward it. Then they run away. The modern cars burn so much fuel warming up I can barely stand there when they run.

 Our little dragster does 3 G's at launch and covers 60' in just over a second from a dead stop. It makes around a thousand HP with a 4 barrel carb on gas. $15 a gallon gas.

 And yes if you've never seen nitro cars in person, do it. Water in a cup left on the bleachers will literally jump out of the cup when the cars launch. See them from the start finish and middle of the track. (I wore black pants and shirt with dark glasses and a cap and waited until the nitro cars were backing up and walked right up to the starting line with the crew when the cars launched, it was awesome. No one even looked at me. L0L.
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Offline dusterdude

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Re: Try and wrap your head around this.
« Reply #12 on: July 22, 2015, 04:25:06 PM »
Yep you gotta see em up close and personal,sprint cars too
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Offline Don R

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Re: Try and wrap your head around this.
« Reply #13 on: July 23, 2015, 10:51:05 PM »
 Saturday We may try to qualify for a quick 8 race, when it was a Q16 we usually ended up #9 so it's sketchy.
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