Im sure some while ago, there was a vid of Drag Racing launches, mostly showing how the tire works under load, anyone got a link?????
Ian
Looking for an old vid
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ian.stewart
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Looking for an old vid
THE SMOKING GNU
12.604 with an old boiler of a RV8 and no gas
WHY are there so many IANS on this site???????
12.604 with an old boiler of a RV8 and no gas
WHY are there so many IANS on this site???????
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ihatesissycars
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ian.stewart
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Here's some Top Fuel Facts to go with the video...
You don't have to be a drag racing fan to appreciate these statistics. Some Interesting Top Fuel Dragster Facts:
* One dragster's 500-inch Hemi makes more horsepower then the first 8 rows at Daytona.
* Under full throttle, a dragster engine consumes 1 1/2 gallons of nitro per second, the same rate of fuel consumption as a fully loaded 747, but with 4 times the energy density.
* The supercharger takes more power to drive then a stock hemi makes.
* With nearly 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into nearly-solid form before ignition.
* Cylinders run on the verge of hydraulic lock.
* Dual magnetos apply 44 amps to each spark plug.
This is the output of an arc welder in each cylinder.
* At stoichiometric (exact) 1.7:1 air/fuel mixture (for nitro), the flame front of nitro methane measures 7050 degrees F.
* Nitro methane burns yellow. The spectacular white flame seen above the exhaust stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases.
* Spark plug electrdes 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 off it's fuel flow.
* If spark momentarily fails early in the run, unburned nitro builds up in those cylinders and then explodes with a force that can blow cylinder heads off the block in pieces or blow the block in half.
* Dragsters twist the crank (torsionally) so far (20 degrees in the big end of the crank) that sometimes cam lobes are ground offset from front to rear to re-phase the valve timing somewhere closer to synchronization with the pistons.
* To exceed 300mph in 4.5 seconds dragsters must accelerate at an average of over 4G's. But in reaching 200 mph well before 1/2 track, launch acceleration is closer to 8G's.
* If all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs $1000.00 per second.
* Dragsters reach over 300 miles per hour before
you have read this sentence.
* Top Fuel Engines ONLY turn 540 revolutions from light to light!
* The redline is actually quite high at 9500rpm.
I've seen these facts in a few places - I still can't get my head around the torsional twist of the crank.. wow!
You don't have to be a drag racing fan to appreciate these statistics. Some Interesting Top Fuel Dragster Facts:
* One dragster's 500-inch Hemi makes more horsepower then the first 8 rows at Daytona.
* Under full throttle, a dragster engine consumes 1 1/2 gallons of nitro per second, the same rate of fuel consumption as a fully loaded 747, but with 4 times the energy density.
* The supercharger takes more power to drive then a stock hemi makes.
* With nearly 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into nearly-solid form before ignition.
* Cylinders run on the verge of hydraulic lock.
* Dual magnetos apply 44 amps to each spark plug.
This is the output of an arc welder in each cylinder.
* At stoichiometric (exact) 1.7:1 air/fuel mixture (for nitro), the flame front of nitro methane measures 7050 degrees F.
* Nitro methane burns yellow. The spectacular white flame seen above the exhaust stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases.
* Spark plug electrdes 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 off it's fuel flow.
* If spark momentarily fails early in the run, unburned nitro builds up in those cylinders and then explodes with a force that can blow cylinder heads off the block in pieces or blow the block in half.
* Dragsters twist the crank (torsionally) so far (20 degrees in the big end of the crank) that sometimes cam lobes are ground offset from front to rear to re-phase the valve timing somewhere closer to synchronization with the pistons.
* To exceed 300mph in 4.5 seconds dragsters must accelerate at an average of over 4G's. But in reaching 200 mph well before 1/2 track, launch acceleration is closer to 8G's.
* If all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs $1000.00 per second.
* Dragsters reach over 300 miles per hour before
you have read this sentence.
* Top Fuel Engines ONLY turn 540 revolutions from light to light!
* The redline is actually quite high at 9500rpm.
I've seen these facts in a few places - I still can't get my head around the torsional twist of the crank.. wow!
IanT + '54 RV8 Pop (° || °)
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HairbearTE
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Another couple of good ones:
The fuel pump in a TF car apparently flows more than the water pump in an average family car!
And the static CR is set differently from the front to the rear of the engine to compensate for the inherrant distribution problems of the blower!
Theres loads more, and its all pretty amazing stuff. Its good to pull up these stats when talking to guys involved with other forms of motorsport who don't realise how much goes into one pass from a dragster.
The fuel pump in a TF car apparently flows more than the water pump in an average family car!
And the static CR is set differently from the front to the rear of the engine to compensate for the inherrant distribution problems of the blower!
Theres loads more, and its all pretty amazing stuff. Its good to pull up these stats when talking to guys involved with other forms of motorsport who don't realise how much goes into one pass from a dragster.
Indeed they do, here's the proof:IanT wrote: * Spark plug electrdes 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 off it's fuel flow.
www.mez.co.uk/santapod.html
At the autosport show, the mechanic said the compression ratio is around 16:1 and they run 40lbs of boost. (I dont think it was even a top fueler either)
