1/4 mile question terminal speed
Discussion
iva cosworth said:
300bhp/ton said:
iva cosworth said:
1/4 mile in a road car is hardly rocket science.
Launch,accelarate,change gear,accelarate,finish line.
A day at a RWYB and anyone can be an expert in their own car.
And with that .....Goodnight
So you've got timeslips to prove it then?Launch,accelarate,change gear,accelarate,finish line.
A day at a RWYB and anyone can be an expert in their own car.
And with that .....Goodnight
time on gantry for n/s lane
iva cosworth said:
time on gantry for n/s laneNice car and time. Btw. But the point stands that there is still a skill involved. Even more so if you are using a 2wd vehicle with less traction off the line and if you are power shifting.
iva cosworth said:
time on gantry for n/s laneHave you converted it to rwd and what bhp does that beauty produce.
Epic time 153mph terminal speed quicker than a Veyron!!!!
Real times and speeds from a recent York Raceway meeting (RWYB times)
http://www.yorkdragway.org/results.pl?date=2012-05...
fastest terminal speed = 136.44mph
http://www.yorkdragway.org/results.pl?date=2012-05...
fastest terminal speed = 136.44mph
I've been to Brighton Speed Trials twice with my Caterham Zetec and managed the following (both warm dry runs):
170bhp on carbs - 13.56s and 102mph
190bhp on TBs - 13.20s and 104mph
The Zetec is a fairly 'torquey' engine on TBs and the best 64ft time I could manage was 2.23s and that was only with an initial 2,000 revs.
170bhp on carbs - 13.56s and 102mph
190bhp on TBs - 13.20s and 104mph
The Zetec is a fairly 'torquey' engine on TBs and the best 64ft time I could manage was 2.23s and that was only with an initial 2,000 revs.
I thought I knew what was quick on the 1/4 mile strip.
Then I went to Santa Pod and stood at the finish line. There's something about a "car" coming past at 315 mph - less then 4 seconds after it left the start line and still accelerating - which gets your attention!!
FYI a passenger jet takes off and lands at about 180 mph....
Then I went to Santa Pod and stood at the finish line. There's something about a "car" coming past at 315 mph - less then 4 seconds after it left the start line and still accelerating - which gets your attention!!
FYI a passenger jet takes off and lands at about 180 mph....
Have you got it running on race gas and is it still road legal?AdeTuono said:
GTR720 said:
My 980kg rwd Ultima GTR runs 9.1 seconds 1/4 TV 172mph.
You waited 10 years to tell us that?In all seriousness i've never understood drag racing, boring to watch, boring to have a go at, the sort of 'motorsport' where electric cars would probably be quite good. Never realised so many people enjoyed going quickly in a straight line - like they're oblivious to the existence of corners
Chunkychucky said:
AdeTuono said:
GTR720 said:
My 980kg rwd Ultima GTR runs 9.1 seconds 1/4 TV 172mph.
You waited 10 years to tell us that?In all seriousness i've never understood drag racing, boring to watch, boring to have a go at, the sort of 'motorsport' where electric cars would probably be quite good. Never realised so many people enjoyed going quickly in a straight line - like they're oblivious to the existence of corners
Saying that, unless you’ve sat in a car accelerating to 150ish in 8 secs you have no idea how addictive it is
Never mind top fuel cars that’ll go 0 to 300 mph in 3 secs.
Here's my old lil baby, a 950kg and 525hp MX5 with a 1JZ Toyota engine. Ran 10.8 at 135 but sure there was loads more in it. I think it was probably a nine second car but struggled with too much grip off the line and big cams which lacked low end torque, so always a poor 60 ft but great 2nd 1/8th.
Chunkychucky said:
AdeTuono said:
GTR720 said:
My 980kg rwd Ultima GTR runs 9.1 seconds 1/4 TV 172mph.
You waited 10 years to tell us that?In all seriousness i've never understood drag racing, boring to watch, boring to have a go at, the sort of 'motorsport' where electric cars would probably be quite good. Never realised so many people enjoyed going quickly in a straight line - like they're oblivious to the existence of corners
ChrisPackit said:
Here's my old lil baby, a 950kg and 525hp MX5 with a 1JZ Toyota engine. Ran 10.8 at 135 but sure there was loads more in it. I think it was probably a nine second car but struggled with too much grip off the line and big cams which lacked low end torque, so always a poor 60 ft but great 2nd 1/8th.
Wow, bet that's a handful, love it.As poster above said, Santa Pod a great day out, see crazy cars like this, talk to other owners, the noise, the smell, all good fun.
Here's some interesting info about Top Fuellers - it's a bit out of date as they no longer run 1/4 mile but this bit is interesting:
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 past 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 1320 foot long race course.
-One Top Fuel dragster 500 cubic inch Hemi engine makes more horsepower than the first 4 rows at the Daytona 500. They have over half again as much horsepower in one cylinder as a Dodge Viper has in all ten. No one has ever successfully run one long enough on a dyno to get a horsepower reading. Current estimates are right around 6,000 horsepower.
-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 supercharger. The fuel pump alone requires more horsepower to turn than the average street car produces.
-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.
-The 1.7:1 air/fuel mixture for nitro methane produces a 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, disassociated from atmospheric water vapour 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 the run, the engine is dieseling from compression plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by running the car out of fuel. There is no way to cut off the fuel; the engine stops only when it blows or the tank runs dry.
-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. To put this in perspective; a top fuel dragster, parked next to a Super Hornet on the steam catapult on the deck of an aircraft carrier, would be in the water and sinking before the Super Hornet was halfway down the deck.
-Dragsters reach over 300 miles per hour before you have completed reading this sentence.
-Top Fuel Engines only turn approximately 540 revolutions from light to light!
-Including the burnout, the engine must only survive 900 revolutions under load. They only survive about 80% of the time.
-Redline at 9500 rpm.
-Assuming all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs an estimated $1,000.00 per second.
-The engine is entirely rebuilt every run, or every 900 revolutions. New pistons and rings, new rods, new rod bearings. Sometimes a new crank. The crew does this in about two hours between rounds.
-The current Top Fuel dragster elapsed time record is 4.441 seconds for the quarter mile. The top speed record is 333.00 mph (533 km/h) as measured over the last 66' of the run.
-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 past 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 1320 foot long race course.
From https://www.bleepingcomputer.com/forums/t/597847/i...
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 past 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 1320 foot long race course.
-One Top Fuel dragster 500 cubic inch Hemi engine makes more horsepower than the first 4 rows at the Daytona 500. They have over half again as much horsepower in one cylinder as a Dodge Viper has in all ten. No one has ever successfully run one long enough on a dyno to get a horsepower reading. Current estimates are right around 6,000 horsepower.
-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 supercharger. The fuel pump alone requires more horsepower to turn than the average street car produces.
-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.
-The 1.7:1 air/fuel mixture for nitro methane produces a 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, disassociated from atmospheric water vapour 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 the run, the engine is dieseling from compression plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by running the car out of fuel. There is no way to cut off the fuel; the engine stops only when it blows or the tank runs dry.
-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. To put this in perspective; a top fuel dragster, parked next to a Super Hornet on the steam catapult on the deck of an aircraft carrier, would be in the water and sinking before the Super Hornet was halfway down the deck.
-Dragsters reach over 300 miles per hour before you have completed reading this sentence.
-Top Fuel Engines only turn approximately 540 revolutions from light to light!
-Including the burnout, the engine must only survive 900 revolutions under load. They only survive about 80% of the time.
-Redline at 9500 rpm.
-Assuming all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs an estimated $1,000.00 per second.
-The engine is entirely rebuilt every run, or every 900 revolutions. New pistons and rings, new rods, new rod bearings. Sometimes a new crank. The crew does this in about two hours between rounds.
-The current Top Fuel dragster elapsed time record is 4.441 seconds for the quarter mile. The top speed record is 333.00 mph (533 km/h) as measured over the last 66' of the run.
-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 past 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 1320 foot long race course.
From https://www.bleepingcomputer.com/forums/t/597847/i...
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