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.