General Car Chat Talk about cars in general. All makes and models - strictly car discussion.

Thought this was interesting..

Thread Tools
 
Old Feb 24, 2012 | 06:15 AM
  #1 (permalink)  
2klara's Avatar
Thread Starter
Roadkill Vacuum
 
Joined: Jul 2006
Posts: 1,057
Likes: 0
Default Thought this was interesting..

Copied from another site..

Cliffs: Scroll to highlighted RED paragraph (last)

This article was sent to me by a friend of mine in racing.
For those who love numbers, engineers, speed freaks and those who think they have gone too fast at one time or another. This puts Corvette performance in perspective. This article mentions Lingenfelter twin turbo powered Z06.
Read this thru slowly and try to comprehend the amount of force produced in just under 4 seconds! The last paragraph puts it all into perspective !
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…..and that includes any aircraft launched by a catapult from an aircraft carrier. Nothing can compare

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 (0.15) of a second for all 6,000+ horsepower (some believe 8,000 HP is more realistic - there are no dynamometers capable of measuring) 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. (Oxy-acetylene on "cut" is 6,300)
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 one 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 off, 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 ). Since that time, nitro powered Top Fuel and Funny Cars have gone to 1,000 feet instead of the former 1,320 feet length runs which has resulted in current elapsed times being in the high 3 second area (3.70’s and 3.80’s).
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 instant.
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!
__________________

Last edited by 2klara; Feb 25, 2012 at 05:12 AM.
Reply
Old Feb 24, 2012 | 11:05 AM
  #2 (permalink)  
G-Magoo's Avatar
July - Ride of the Month
 
Joined: Mar 2005
Posts: 2,858
Likes: 0
Default

Ive always been blown away at the fact that they can register anywhere from a 1.5-3.9 on the richter scale when launching.
__________________
I love haters..
Originally Posted by VR6exxy
I love your brutal honesty. It makes my day
Build thread
Reply
Old Feb 24, 2012 | 11:15 AM
  #3 (permalink)  
zhillz's Avatar
Porno Music Producer
 
Joined: Jan 2006
Posts: 8,521
Likes: 0
Default

Holy shit.
Reply
Old Feb 24, 2012 | 12:14 PM
  #4 (permalink)  
medicmatt's Avatar
my mojo so dope
 
Joined: Feb 2007
Posts: 2,781
Likes: 0
Default

does it have vtec? lol

those things are scary to even watch, must be insane to drive one
__________________

Reply
Old Feb 24, 2012 | 01:21 PM
  #5 (permalink)  
Kabron's Avatar
Blood In Blood Out
 
Joined: Nov 2010
Posts: 1,845
Likes: 0
Default

Originally Posted by 2klara
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!
__________________
VATO LOCO FOR LIFE

Reply
Old Feb 25, 2012 | 05:08 AM
  #6 (permalink)  
2klara's Avatar
Thread Starter
Roadkill Vacuum
 
Joined: Jul 2006
Posts: 1,057
Likes: 0
Default

^yeah..good stuff. I know it's a long read, but edited first post w/ cliff/scroll to...
__________________
Reply
Old Feb 25, 2012 | 05:50 PM
  #7 (permalink)  
Empire's Avatar
buildin' it
 
Joined: Aug 2006
Posts: 4,565
Likes: 0
Default

Originally Posted by 2klara
Top fuel engines turn approximately 540 revolutions from light to light! Including the burnout, the engine must only survive 900 revolutions under load.
maybe I missed something, but I'm not getting what this is saying.
Reply
Old Feb 26, 2012 | 09:51 AM
  #8 (permalink)  
Kabron's Avatar
Blood In Blood Out
 
Joined: Nov 2010
Posts: 1,845
Likes: 0
Default

Originally Posted by Empire
maybe I missed something, but I'm not getting what this is saying.





Originally Posted by 2klara
Copied from another site..

Cliffs: Scroll to highlighted RED paragraph (last)

This article was sent to me by a friend of mine in racing.
For those who love numbers, engineers, speed freaks and those who think they have gone too fast at one time or another. This puts Corvette performance in perspective. This article mentions Lingenfelter twin turbo powered Z06.
Read this thru slowly and try to comprehend the amount of force produced in just under 4 seconds! The last paragraph puts it all into perspective !
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…..and that includes any aircraft launched by a catapult from an aircraft carrier. Nothing can compare

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 (0.15) of a second for all 6,000+ horsepower (some believe 8,000 HP is more realistic - there are no dynamometers capable of measuring) 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. (Oxy-acetylene on "cut" is 6,300)
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 one 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 off, 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 ). Since that time, nitro powered Top Fuel and Funny Cars have gone to 1,000 feet instead of the former 1,320 feet length runs which has resulted in current elapsed times being in the high 3 second area (3.70’s and 3.80’s).
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 instant.
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!
__________________
VATO LOCO FOR LIFE

Reply
Old Feb 26, 2012 | 08:34 PM
  #9 (permalink)  
Empire's Avatar
buildin' it
 
Joined: Aug 2006
Posts: 4,565
Likes: 0
Default

thanks kabron.
lol
I meant that specific line.
It said the engine only has to last 900 revolutions under load.
Unless those are just massive revolutions, I'm not getting how it only has to last that long.
Reply
Old Feb 26, 2012 | 08:37 PM
  #10 (permalink)  
Empire's Avatar
buildin' it
 
Joined: Aug 2006
Posts: 4,565
Likes: 0
Default

oh wait.
maybe that does make sense.
redline of 9,500 rpms = roughly 160 revs a second. the run lasts 3.8 seconds. thats just over 600 revs in the run. add in the burn out. yeah, i guess 900 revolutions makes sense.

damn. puts it into perspective.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Green_Lantern
Honda/Acura Tech
1
Jan 6, 2007 04:49 AM
DONT SLEEP
War Stories
66
Oct 17, 2003 02:03 PM
MitsuBucci
Mitsubishi Tech
6
Dec 2, 2001 09:11 PM




All times are GMT -8. The time now is 04:56 PM.