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Old 07-18-2012, 08:31 PM   #1
bestworkother

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Default Acceleration Defined
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!

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 (ideal) 1.7 to 1 ratio
of air to nitro methane, the flame front temperature measures 7,050 deg F.

Nitro methane burns yellow... The spectacular white flame
s 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 at 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 equipment is paid off, the crew work
s 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.

...... and that my friend, is ACCELERATION!
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Old 07-18-2012, 08:43 PM   #2
bertanu

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If thats how you get to work ,you must be very keen.............



heres something you maybe interested in but its a bit slower,built in 1937

http://www.dailymail.co.uk/news/arti...-grandson.html

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Old 07-18-2012, 09:17 PM   #3
Gasfghj

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Acceleration Defined Let p(t) be the position of a given object

a = d^2 p(t) / dt^2
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Old 07-18-2012, 11:00 PM   #4
fuslssdfaa

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Seeing modern Top Fuel Dragsters and Funny cars in person is one of the most amazing things I have ever seen. It is one of those things that I can sit here for an hour but I could never describe it. You just have to be there and experience it, they are so loud that it's hard for my eyes to even focus on them because it vibrates your entire body. If you get a chance to go see NHRA, do it. Watching them on TV is absolutely nothing like getting the whole experience.

Here is the fuel pump for one cylinder, at idle then half way through WOT. 1 of 8 in a car.
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Old 07-18-2012, 11:00 PM   #5
Pateeffelty

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Let p(t) be the position of a given object

a = d^2 p(t) / dt^2
= 6
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Old 07-18-2012, 11:04 PM   #6
chppjdf

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http://www.youtube.com/watch?v=Hldii...eature=related
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Old 07-18-2012, 11:11 PM   #7
Keyclenef

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I love top fuel and funny cars. If you haven't been to a meet and felt the force of these things through the air, it's hard to grasp the power the OP is describing. You can feel the air being sucked from around you and you can feel the compression as well... and from 50 meters or so.... 150 feet up on the bleachers.

I've just read LuckyStrikes post and thats my experience too 100%. It's something to behold.
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Old 07-18-2012, 11:29 PM   #8
SodeSceriobia

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I used to dragrace, nothing like top fuel but 9 second Q/mile packs quite a punch. The only way to explain the launch "to the moon!"
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Old 07-18-2012, 11:41 PM   #9
DurryVony

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I used to dragrace, nothing like top fuel but 9 second Q/mile packs quite a punch. The only way to explain the launch "to the moon!"
Cool story brah.




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Old 07-18-2012, 11:59 PM   #10
duribass

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Cool story brah.




So did you get your shirt back?
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Old 07-19-2012, 12:10 AM   #11
rockboyzaza

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Cebu, I inquired in another thread if you knew what kind of aircraft is in your avatar. There was no response from you so I'm guessing you don't know. It's an awesome de Havilland DHC-2 Beaver.
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Old 07-19-2012, 12:33 AM   #12
ElectraDupu

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try this on for size...lol

my dad still has his modified he used to compete with, those were fun times hangin out at the tractor pulls...
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Old 07-19-2012, 12:46 AM   #13
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I used to co-pilot in garvey races in my early 20's in NJ, there's nothing like strapping a V-8 to a piece of plywood and sailing...

When the valve covers blew off the the fresh hot oil in the face was all so exciting!
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Old 07-19-2012, 12:59 AM   #14
barsikjal

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Cebu, I inquired in another thread if you knew what kind of aircraft is in your avatar. There was no response from you so I'm guessing you don't know. It's an awesome de Havilland DHC-2 Beaver.
Must have missed your question, but your right I had no clue.
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Old 07-19-2012, 01:24 AM   #15
dicemets

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I used to co-pilot in garvey races in my early 20's in NJ, there's nothing like strapping a V-8 to a piece of plywood and sailing...

When the valve covers blew off the the fresh hot oil in the face was all so exciting!
That's awesome, speed on the water is not comparable at all to land. I don't consider 100mph to be fast at all on land, but on the water, you are getting down. (I've only gone about 70, so I can only imagine)
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Old 07-19-2012, 01:27 AM   #16
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That's awesome, speed on the water is not comparable at all to land. I don't consider 100mph to be fast at all on land, but on the water, you are getting down. (I've only gone about 70, so I can only imagine)
An old associate bought a boat, he wouldn't even drive the thing. They were out racing another guy and at speed his wife flew out of the boat. He didn't even realize it for a couple minuted til my associate finally caught his eye. Never did find out what happened to her.
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Old 07-19-2012, 01:29 AM   #17
tobia

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An old associate bought a boat, he wouldn't even drive the thing. They were out racing another guy and at speed his wife flew out of the boat. He didn't even realize it for a couple minuted til my associate finally caught his eye. Never did find out what happened to her.
Probably nothing good. After about 40mph water feels more like concrete.
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Old 07-19-2012, 01:36 AM   #18
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This guy got smart & put the camera out front, so it didn't get covered.

Look how he gets away from the dock... that's how nice and light those things are.



These boats today, are light, graceful some made of wood but most of fiberglass, and beautiful to watch in motion.Motors used are automobile motors, some 350 Chevys, directly out of the crate, and others completely modified for speed in excess of 90 miles per hour...1750 pound minimum for all modified and 375c.i. class http://www.jerseyoutlaws.com/BARNEGAT_BAY_GARVEY.html
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Old 07-19-2012, 02:08 AM   #19
crycleascentyv

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this is a good MTP as well...
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Old 07-19-2012, 02:26 AM   #20
pavlik

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Seeing modern Top Fuel Dragsters and Funny cars in person is one of the most amazing things I have ever seen. It is one of those things that I can sit here for an hour but I could never describe it. You just have to be there and experience it, they are so loud that it's hard for my eyes to even focus on them because it vibrates your entire body. If you get a chance to go see NHRA, do it. Watching them on TV is absolutely nothing like getting the whole experience.

Here is the fuel pump for one cylinder, at idle then half way through WOT. 1 of 8 in a car.
As a matter of fact Ill be going to the national event in Colorado this weekend, my 10th straight year going

Its my 1 "sporting event" of the year that I attend (though that might change next year if I get a chance to go to one of the 2 GP's in the US next year)
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