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Engines and acceleration
Since boats have engines and for a change of pace, I thought I'd
share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. To put this into perspective: You are driving a new $140,000 Lingenfelter twin-turbo powered Corvette Z-06. Over a mile up the road, at the beginning of a measured quarter mile, the dragster sits, ready to launch as you pass by it at 200 mph. The dragster launches as you pass by and starts after you. You keep your foot buried hard to the floor, and suddenly you hear an incredibly brutally screaming whine that pummels your eardrums and within a mere 3 seconds the dragster effortlessly catches & passes you. He beats you to the finish line, a quarter-mile away from where you passed it. |
Engines and acceleration
On 9/10/13 6:56 PM, Mr. Luddite wrote:
Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. To put this into perspective: You are driving a new $140,000 Lingenfelter twin-turbo powered Corvette Z-06. Over a mile up the road, at the beginning of a measured quarter mile, the dragster sits, ready to launch as you pass by it at 200 mph. The dragster launches as you pass by and starts after you. You keep your foot buried hard to the floor, and suddenly you hear an incredibly brutally screaming whine that pummels your eardrums and within a mere 3 seconds the dragster effortlessly catches & passes you. He beats you to the finish line, a quarter-mile away from where you passed it. Yeah, so what are the MPG Highway/City numbers? :) |
Engines and acceleration
"F.O.A.D." wrote in message ... On 9/10/13 6:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. To put this into perspective: You are driving a new $140,000 Lingenfelter twin-turbo powered Corvette Z-06. Over a mile up the road, at the beginning of a measured quarter mile, the dragster sits, ready to launch as you pass by it at 200 mph. The dragster launches as you pass by and starts after you. You keep your foot buried hard to the floor, and suddenly you hear an incredibly brutally screaming whine that pummels your eardrums and within a mere 3 seconds the dragster effortlessly catches & passes you. He beats you to the finish line, a quarter-mile away from where you passed it. Yeah, so what are the MPG Highway/City numbers? :) ---------------------------- You don't want one. It has to be totally rebuilt after every run. The spark plug electrodes completely burn up halfway through the quarter mile run and the engine continues to fire purely in "diesel" mode. |
Engines and acceleration
On 9/10/13 7:26 PM, Mr. Luddite wrote:
"F.O.A.D." wrote in message ... On 9/10/13 6:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. To put this into perspective: You are driving a new $140,000 Lingenfelter twin-turbo powered Corvette Z-06. Over a mile up the road, at the beginning of a measured quarter mile, the dragster sits, ready to launch as you pass by it at 200 mph. The dragster launches as you pass by and starts after you. You keep your foot buried hard to the floor, and suddenly you hear an incredibly brutally screaming whine that pummels your eardrums and within a mere 3 seconds the dragster effortlessly catches & passes you. He beats you to the finish line, a quarter-mile away from where you passed it. Yeah, so what are the MPG Highway/City numbers? :) ---------------------------- You don't want one. It has to be totally rebuilt after every run. The spark plug electrodes completely burn up halfway through the quarter mile run and the engine continues to fire purely in "diesel" mode. Sounds like a ford sedan I bought well-used... :) But not as bad as a pretty little MG-A I owned in the 1960s that literally caught fire on a trip back from Ft. Leonard Wood. But I learned my lesson...I later bought a Lotus. Now that was the very definition of unreliability. :) |
Engines and acceleration
On Tuesday, September 10, 2013 6:56:30 PM UTC-4, Mr. Luddite wrote:
Here, DICK.....watch this. http://www.youtube.com/watch?v=xGTbQuhhluY |
Engines and acceleration
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Engines and acceleration
On Tuesday, September 10, 2013 9:24:29 PM UTC-4, BAR wrote:
It should be gallons per mile. 11 GALLONS per QUARTER mile....44 Gallons per mile..... |
Engines and acceleration
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Engines and acceleration
On 9/10/2013 5:56 PM, Mr. Luddite wrote:
Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. |
Engines and acceleration
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Engines and acceleration
On Tue, 10 Sep 2013 18:56:30 -0400, "Mr. Luddite" nowayalso.jose.com wrote:
Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. To put this into perspective: You are driving a new $140,000 Lingenfelter twin-turbo powered Corvette Z-06. Over a mile up the road, at the beginning of a measured quarter mile, the dragster sits, ready to launch as you pass by it at 200 mph. The dragster launches as you pass by and starts after you. You keep your foot buried hard to the floor, and suddenly you hear an incredibly brutally screaming whine that pummels your eardrums and within a mere 3 seconds the dragster effortlessly catches & passes you. He beats you to the finish line, a quarter-mile away from where you passed it. Like this one? Fast. John (Gun Nut) H. -- Hope you're having a great day! |
Engines and acceleration
On Wed, 11 Sep 2013 16:27:42 -0400, John H wrote:
On Tue, 10 Sep 2013 18:56:30 -0400, "Mr. Luddite" nowayalso.jose.com wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. To put this into perspective: You are driving a new $140,000 Lingenfelter twin-turbo powered Corvette Z-06. Over a mile up the road, at the beginning of a measured quarter mile, the dragster sits, ready to launch as you pass by it at 200 mph. The dragster launches as you pass by and starts after you. You keep your foot buried hard to the floor, and suddenly you hear an incredibly brutally screaming whine that pummels your eardrums and within a mere 3 seconds the dragster effortlessly catches & passes you. He beats you to the finish line, a quarter-mile away from where you passed it. Like this one? Fast. John (Gun Nut) H. Whoops. He http://www.youtube.com/watch?v=-veelJoQsXs John (Gun Nut) H. -- Hope you're having a great day! |
Engines and acceleration
"amdx" wrote in message ... On 9/11/2013 1:53 PM, iBoaterer wrote: In article , says... On 9/10/2013 5:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. Yeah, 540 revs is not correct. Could you back that up? I just showed you my numbers, were do you think I went wrong? I didn't think his number was right either, then I did the math. Mikek ---------------------- iBoaterer just wants to argue about a difference of 35 rpms. Could be due to wheel slip, could be that they used slightly different gear ratios ... could be that the driver didn't keep it in perfect alignment ... whatever. The point of the original post was that the engine turns surprisingly few rpms in a quarter mile because of the phenomenal acceleration. |
Engines and acceleration
Mr. Luddite wrote:
Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. To put this into perspective: You are driving a new $140,000 Lingenfelter twin-turbo powered Corvette Z-06. Over a mile up the road, at the beginning of a measured quarter mile, the dragster sits, ready to launch as you pass by it at 200 mph. The dragster launches as you pass by and starts after you. You keep your foot buried hard to the floor, and suddenly you hear an incredibly brutally screaming whine that pummels your eardrums and within a mere 3 seconds the dragster effortlessly catches & passes you. He beats you to the finish line, a quarter-mile away from where you passed it. How would it get that kind of power to the ground? Traction would be difficult. |
Engines and acceleration
iBoaterer wrote:
In article , says... On 9/10/2013 5:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. Yeah, 540 revs is not correct. More like 633 revs. For 4 seconds at 9500 rpm. Not including startup, burnout, and shutdown. Also takes the power of one cylinder to run the supercharger, and is near hydro lock with the amount of air and fuel. |
Engines and acceleration
Earl wrote:
Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. To put this into perspective: You are driving a new $140,000 Lingenfelter twin-turbo powered Corvette Z-06. Over a mile up the road, at the beginning of a measured quarter mile, the dragster sits, ready to launch as you pass by it at 200 mph. The dragster launches as you pass by and starts after you. You keep your foot buried hard to the floor, and suddenly you hear an incredibly brutally screaming whine that pummels your eardrums and within a mere 3 seconds the dragster effortlessly catches & passes you. He beats you to the finish line, a quarter-mile away from where you passed it. How would it get that kind of power to the ground? Traction would be difficult. Tires and weight shift. Probably a coefficient of traction greater than 1! |
Engines and acceleration
"Califbill" wrote in message ... iBoaterer wrote: In article , says... On 9/10/2013 5:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. Yeah, 540 revs is not correct. More like 633 revs. For 4 seconds at 9500 rpm. Not including startup, burnout, and shutdown. Also takes the power of one cylinder to run the supercharger, and is near hydro lock with the amount of air and fuel. --------------------------- 633 revs assumes it's red lined at 9500 rpm throughout the entire quarter mile. I don't think that's so. The 540 revs given in the article was an approximate figure because it doesn't take into account variables like wheel spin, etc. Mikek's calculations seem spot on for a theoretical perfect run, light to light with no wheel spin and not accounting for burnouts done beforehand. The article stated that Including the burnout, the engine must only survive 900 revolutions under load. It's then rebuilt. Other specs sent about this: 0 to 100 MPH in .8 seconds (the first 60 feet of t he run) 0 to 200 MPH in 2.2 seconds (the first 350 feet of the run) 6 g-forces at the starting line |
Engines and acceleration
In article , "Mr.
Luddite" says... "amdx" wrote in message ... On 9/11/2013 1:53 PM, iBoaterer wrote: In article , says... On 9/10/2013 5:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. Yeah, 540 revs is not correct. Could you back that up? I just showed you my numbers, were do you think I went wrong? I didn't think his number was right either, then I did the math. Mikek ---------------------- iBoaterer just wants to argue about a difference of 35 rpms. Could be due to wheel slip, could be that they used slightly different gear ratios ... could be that the driver didn't keep it in perfect alignment ... whatever. The point of the original post was that the engine turns surprisingly few rpms in a quarter mile because of the phenomenal acceleration. At a redline of 9500 RPM's that is 158.3333 per second. 4.5 times that (the time it takes to go a quarter mile) is 712.5. And that is not including wheel spin, which by the way in a top fuel dragster is nearly the whole run, and you could easily double that. |
Engines and acceleration
"iBoaterer" wrote in message ... In article , "Mr. Luddite" says... "amdx" wrote in message ... On 9/11/2013 1:53 PM, iBoaterer wrote: In article , says... On 9/10/2013 5:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. Yeah, 540 revs is not correct. Could you back that up? I just showed you my numbers, were do you think I went wrong? I didn't think his number was right either, then I did the math. Mikek ---------------------- iBoaterer just wants to argue about a difference of 35 rpms. Could be due to wheel slip, could be that they used slightly different gear ratios ... could be that the driver didn't keep it in perfect alignment ... whatever. The point of the original post was that the engine turns surprisingly few rpms in a quarter mile because of the phenomenal acceleration. At a redline of 9500 RPM's that is 158.3333 per second. 4.5 times that (the time it takes to go a quarter mile) is 712.5. And that is not including wheel spin, which by the way in a top fuel dragster is nearly the whole run, and you could easily double that. --------------------------- Again, you assume the entire quarter mile is run with the engine at red line. |
Engines and acceleration
On 9/12/13 8:25 AM, Mr. Luddite wrote:
"iBoaterer" wrote in message ... In article , "Mr. Luddite" says... "amdx" wrote in message ... On 9/11/2013 1:53 PM, iBoaterer wrote: In article , says... On 9/10/2013 5:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. Yeah, 540 revs is not correct. Could you back that up? I just showed you my numbers, were do you think I went wrong? I didn't think his number was right either, then I did the math. Mikek ---------------------- iBoaterer just wants to argue about a difference of 35 rpms. Could be due to wheel slip, could be that they used slightly different gear ratios ... could be that the driver didn't keep it in perfect alignment ... whatever. The point of the original post was that the engine turns surprisingly few rpms in a quarter mile because of the phenomenal acceleration. At a redline of 9500 RPM's that is 158.3333 per second. 4.5 times that (the time it takes to go a quarter mile) is 712.5. And that is not including wheel spin, which by the way in a top fuel dragster is nearly the whole run, and you could easily double that. --------------------------- Again, you assume the entire quarter mile is run with the engine at red line. Remember when Hertz had those Shelby Mustangs for rent, and guys would rent them out over the weekend and take them out to run on the drag strip? |
Engines and acceleration
In article , says...
On 9/12/13 8:25 AM, Mr. Luddite wrote: "iBoaterer" wrote in message ... In article , "Mr. Luddite" says... "amdx" wrote in message ... On 9/11/2013 1:53 PM, iBoaterer wrote: In article , says... On 9/10/2013 5:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. Yeah, 540 revs is not correct. Could you back that up? I just showed you my numbers, were do you think I went wrong? I didn't think his number was right either, then I did the math. Mikek ---------------------- iBoaterer just wants to argue about a difference of 35 rpms. Could be due to wheel slip, could be that they used slightly different gear ratios ... could be that the driver didn't keep it in perfect alignment ... whatever. The point of the original post was that the engine turns surprisingly few rpms in a quarter mile because of the phenomenal acceleration. At a redline of 9500 RPM's that is 158.3333 per second. 4.5 times that (the time it takes to go a quarter mile) is 712.5. And that is not including wheel spin, which by the way in a top fuel dragster is nearly the whole run, and you could easily double that. --------------------------- Again, you assume the entire quarter mile is run with the engine at red line. Remember when Hertz had those Shelby Mustangs for rent, and guys would rent them out over the weekend and take them out to run on the drag strip? There is no such thing as a speed bump in a rental car. |
Engines and acceleration
On 9/12/2013 7:42 PM, BAR wrote:
In article , says... On 9/12/13 8:25 AM, Mr. Luddite wrote: "iBoaterer" wrote in message ... In article , "Mr. Luddite" says... "amdx" wrote in message ... On 9/11/2013 1:53 PM, iBoaterer wrote: In article , says... On 9/10/2013 5:56 PM, Mr. Luddite wrote: Since boats have engines and for a change of pace, I thought I'd share some info I recently received from a car nut. He's talking about a custom built, 500 cubic inch dragster engine based on the Chrysler 426 c.i. hemi design. Here's a short list of it's specs and acceleration capabilities: Produces 8,000 horsepower. That's more than the first 4 rows of cars at NASCAR's Daytona 500. Consumes 11.2 gallons of nitro methane per second at full throttle. Dual magnetos supply 44 amps to each spark plug. Capable of reaching over 300 MPH +... before you have completed reading this sentence. Redlines at 9,500 RPM ... only does 540 revolutions light to light in the quarter mile. I want to quibble with the 540 engine revolutions for 1/4 mile. But, the numbers tell the story. Average drag tire is 30" tall, for a circumference of 94" or 7'10". 1/4 mile is 1320ft. 1320 ft / 7'10" equals 168.5 wheel rev's down the track. Assuming a final ratio of 3 to 1 (motor to wheel) 3 times 168.5 = 505 revolutions per 1/4 mile. (does not include wheel spin. Damn! Mikek Fun Fact. When I was kid my grandmother lived 7 miles from Martin Dragway, On Saturday nights we could hear the dragsters run the 1/4 mile from her house 7 miles away. Yeah, 540 revs is not correct. Could you back that up? I just showed you my numbers, were do you think I went wrong? I didn't think his number was right either, then I did the math. Mikek ---------------------- iBoaterer just wants to argue about a difference of 35 rpms. Could be due to wheel slip, could be that they used slightly different gear ratios ... could be that the driver didn't keep it in perfect alignment ... whatever. The point of the original post was that the engine turns surprisingly few rpms in a quarter mile because of the phenomenal acceleration. At a redline of 9500 RPM's that is 158.3333 per second. 4.5 times that (the time it takes to go a quarter mile) is 712.5. And that is not including wheel spin, which by the way in a top fuel dragster is nearly the whole run, and you could easily double that. --------------------------- Again, you assume the entire quarter mile is run with the engine at red line. Remember when Hertz had those Shelby Mustangs for rent, and guys would rent them out over the weekend and take them out to run on the drag strip? They used to do that here at CT Dragway. Avis caught on and liquidated their fleet. One of the GearHeads in town (just up the street) bought one for his little sister, for her 16 Bday.. It was a beautiful car... There is no such thing as a speed bump in a rental car. |
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