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The Definition of Acceleration

getreal

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Read this thru slowly and try to comprehend the amount of force produced in just under 4 seconds! There are no rockets or airplanes built by any government in the world that can accelerate from a standing start as fast as a Top Fuel Dragster or Funny Car!


DEFINITION OF ACCELERATION


One top fuel dragster 500 cubic-inch Hemi engine makes more horsepower than the first 4 rows of stock cars at the Daytona 500.

It takes just 15/100ths of a second for all 6,000+ horsepower of an NHRA Top Fuel dragster engine to reach the rear wheels.

Under full throttle, a dragster engine consumes 1-1/2 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 drive the dragster's supercharger.

With 3,000 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 (stoichiometry: methodology and technology by which quantities of reactants and products in chemical reactions are determined) 1.7:1 air/fuel mixture of nitro methane, the flame front temperature measures 7,050 deg. 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 halfway, the engine is dieseling from compression, plus the glow of exhaust valves at 1,400 deg 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.

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

Dragsters reach over 300 miles per hour before you have completed reading this sentence.

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 9,500 rpm.

Assuming all the equipment is paid for, the crew worked for free, and for once NOTHING BLOWS UP, each run costs an estimate $1,000.00 per second.

The current top fuel dragster elapsed time record is 4.428 seconds for the quarter mile (11/12/06, Tony Schumacher, at Pomona , CA ). The top speed record is 336.15 mph as measured over the last 66' of the run



(05/25/05 Tony Schumacher, at Hebron , OH ).

Putting all of this into perspective:

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 and ready to launch down a quarter mile strip as you pass. You have the advantage of a flying start. You run the 'Vette hard up through the gears and blast across the starting line and pass the dragster at an honest 200 mph. The 'tree' goes green for both of you at that moment.

The dragster launches and starts after you. You keep your foot down hard, but you hear an incredibly brutal whine that sears your eardrums and within 3 seconds, the dragster catches and 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 and not only caught, but nearly blasted you off the road when he passed you within a mere 1,320 foot long race course.
 

TripleB

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One top fuel dragster 500 cubic-inch Hemi engine makes more horsepower than the first 4 rows of stock cars at the Daytona 500.

It takes just 15/100ths of a second for all 6,000+ horsepower of an NHRA Top Fuel dragster engine to reach the rear wheels.

The calculated power output of these engines is most likely somewhere between 8,500 and 10,000 hp
 

ToMorrow44

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They had ESPN sport science do a piece on that and mentioned the same race but with a formula one car crossings the line at 200 and the fuel car running it down. I always thought that would be awesome PR for them to actually stage that race. You could do it at Sonoma, not sure the F1 car would get to 200 but it’d still be great to see.
 

monkeyswrench

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The clutch technology and tire grip is phenomenal. Watching the chassis arch under load, front end just barely touching the ground...

Always thought it was funny when they'd blow off the tires on the launch, and idle the fuel out bouncing down the track...and still click off a 9.90:eek:
 

AZMIDLYF

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My jaw always dropped on the ET they would still do when that happened as well. I sometimes like going down to the big end and waiting for them to go by just after hearing them light off on the line.
 

JM21

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I have ran a 1000hp 55 chevy truck 10.20 in the 1/4 mile at 142 mph, and that thing was fast as all fucking hell. I could not imagine the G's and power that these cars produce.

I have been going to the NHRA drag races since I was old enough to walk (indy for 25 years and now that I am in socal Pomona for the last 8). Everytime I go I am still very impressed at the sport in general, the massive amount of 18 wheelers it takes and of course the dose of nitro in the pits.
 

AZMIDLYF

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No matter how many times I watch this, I still get a kick out of watching the peoples reactions when the nitro comes on and the throttle gets blipped...about 1:30 in the video.

 

monkeyswrench

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I'm toying with the idea of taking my kids to Wildhorse this year. At 10, 12 and 14, I have been a delinquint father, and have never taken them to the big guns. Last time I went, they all still wacked the trottle to seat the clutches...been a while:(
 

Boat 405

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The power output is unreal. My junk which is reasonably fast running low 5.30’s to 1000 ft or 6.80s to 1320 at 150 ish would be like playing in the kiddie pool compared Top Fuel.
 

Cole 392

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I miss the days when every team would set the clutch by blipping the throttle.. unfortunately they don’t do this anymore in NHRA..
 

RaceTec

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No matter how many times I watch this, I still get a kick out of watching the peoples reactions when the nitro comes on and the throttle gets blipped...about 1:30 in the video.
It is really fun when you get to fire it off yourself, I have so much fun playing with these guys. Even nostalgia fuelers are nothing to scoff at. Turning the fuel (nitro) on in the pits, most people don't realize they just start on methanol, then blowing everyone's ear drums (including mine) is a blast! I don't normally warn men, but I will always warn anyone with kids that is even close to behind the headers... Not to mention watching people trying to breath nitro... God I love my job! Ok back to trophy truck pistons...
 

wsuwrhr

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That's an incredible amount of acceleration, most of you guys would shit yourselves with letting the transbrake go in a 10-11 second car.

A brake, in a 10 sec car? :)
 
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RaceTec

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A brake in a 10 sec car? :)
@wsuwrhr You would have laughed your ass of when I was a kid and worked at Art Carr, just for fun Art let me put a full reverse pattern manual 727 with a brake in my 15 second '74 Satellite! Stupid but fun... I also used to keep an anchor in the trunk so that when people would give me shit about my boat, I would just pop the trunk and throw out the anchor! The car was very popular in auto shop...
 

MSum661

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I'm toying with the idea of taking my kids to Wildhorse this year. At 10, 12 and 14, I have been a delinquint father, and have never taken them to the big guns. Last time I went, they all still wacked the trottle to seat the clutches...been a while:(

If you don't live too far from the track and can make it back early Monday morning after the race, most of the heavy hitters stay for test and tune. A friend of ours Bill Blomgren has owned a bunch of Top Fuel Cars over the years and when I wasn't racing a boat I would play rover (Clean the body after each round, grab tools, etc.) at some of the easy for me to get to local races with his Geronimo Fuel Funny Car Team.
If you can play the part well and slip in you can absorb some up and close action at or nearly on the track.

Bill is the Car owner, paid out of his own pocket, that gave early career starts to Aussie Dave Grubnic, Frank and Tony Pedregon, Richard Hartman, and gave seat time to other drivers like Phil Burkhart who is same driver that singed off for my TAFC license.


Bills car.jpg
 
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bagged97taco

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I'm toying with the idea of taking my kids to Wildhorse this year. At 10, 12 and 14, I have been a delinquint father, and have never taken them to the big guns. Last time I went, they all still wacked the trottle to seat the clutches...been a while:(
We will be there with my 4 year old. It’s his favorite thing beside watch my dad and me race drag boats
 

wsuwrhr

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Im not sayin it ain't possible. Just wondering why anyone would. ;)


@wsuwrhr You would have laughed your ass of when I was a kid and worked at Art Carr, just for fun Art let me put a full reverse pattern manual 727 with a brake in my 15 second '74 Satellite! Stupid but fun... I also used to keep an anchor in the trunk so that when people would give me shit about my boat, I would just pop the trunk and throw out the anchor! The car was very popular in auto shop...
 

monkeyswrench

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If you don't live too far from the track and can make it back early Monday morning after the race, most of the heavy hitters stay for test and tune. A friend of ours Bill Blomgren has owned a bunch of Top Fuel Cars over the years and when I wasn't racing a boat I would play rover (Clean the body after each round, grab tools, etc.) at some of the easy for me to get to local races with his Geronimo Fuel Funny Car Team.
If you can play the part well and slip in you can absorb some up and close action at or nearly on the track.

Bill is the Car owner, paid out of his own pocket, that gave early career starts to Aussie Dave Grubnic, Frank and Tony Pedregon, Richard Hartman, and gave seat time to other drivers like Phil Burkhart who is same driver that singed off for my TAFC license.


View attachment 718503
It may be a possibility. I don't know Wild Horse...went once years ago, just out of high school I think. It was still Firebird...always will be to some of us. I grew up 5 miles west of Pomona. I was 10 the first time my dad took me. He knew I loved cars, but the drag races may not have been the best place to take me. The tone of the pro-stockers, spinning up in the beach box... Bitchin! Saw Bob Glidden and the Johnson clan:) When I first went some of the legends were still racing. Ed "The Ace" McCullough, The Snake, Chris "The Greek" Caramesinis (sp) and even Shirley Muldowney. The sound of the nitro cars lighting of is something every motorhead should feel. Over the years, time got slim and funds got slimmer...and the prices to get in went up as well.
 

MSum661

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It may be a possibility. I don't know Wild Horse...went once years ago, just out of high school I think. It was still Firebird...always will be to some of us. I grew up 5 miles west of Pomona. I was 10 the first time my dad took me. He knew I loved cars, but the drag races may not have been the best place to take me. The tone of the pro-stockers, spinning up in the beach box... Bitchin! Saw Bob Glidden and the Johnson clan:) When I first went some of the legends were still racing. Ed "The Ace" McCullough, The Snake, Chris "The Greek" Caramesinis (sp) and even Shirley Muldowney. The sound of the nitro cars lighting of is something every motorhead should feel. Over the years, time got slim and funds got slimmer...and the prices to get in went up as well.

I understand, Firebird will always be Firebird to us too!
 

Loony Toon

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"The current top fuel dragster elapsed time record is 4.428 seconds for the quarter mile (11/12/06, Tony Schumacher, at Pomona , CA ). The top speed record is 336.15 mph"

Current Top Fuel & Funny Car Stats, TF almost a full second faster since 06.

Also notice the faster MPH of the Funny Car vers. Top Fuel. Robert Hight at just under 340mph.

TF ET-3.628 02/10/2018 Clay Millican Pomona, CA
TF MPH-336.57 02/23/2018 Tony Schumacher Chandler, AZ
FC ET-3.793 08/18/2017 Robert Hight Brainerd, MN
FC MPH-339.87 07/29/2017 Robert Hight Sonoma, CA

Most of these cars could go quicker and faster but most tracks today do not have enough track beyond the 1000ft timed length to be able to safely slow them down.
 
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