Mathematically challenged....
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 1,165
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From: Santa Rosa Beach FL
OK, I've got two 366's a 364 and a rimshot. Close enough for me, thanks, unless someone wants to go off on a diatribe about combustion chamber versus bore and stroke... 
☠☣☢ Semper Ebrius ☢☣☠
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From: Virginia
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St. Jude's Donor '06
363.922092576 cubic inches
TrayC6 was closest with the correct rounded-off number of 364.
I don't know where the 366 guys get their numbers from.
Bore is 4.00 and stroke is 3.62 inches.
TrayC6 was closest with the correct rounded-off number of 364.
I don't know where the 366 guys get their numbers from.
Bore is 4.00 and stroke is 3.62 inches.
Race Director
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From: I am Jack's out-dated Fight Club reference. MD
I got 366 because that's the actual conversion from 6 liters (366.14 ci).
I didn't think he cared about the exact displacement figures using bore and stroke.
But I'm not going to argue, especially over 2 cubic inches and engine rounding semantics.
I didn't think he cared about the exact displacement figures using bore and stroke.
But I'm not going to argue, especially over 2 cubic inches and engine rounding semantics.
Last edited by Lazerwolfe; Aug 24, 2004 at 01:01 PM.
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Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 1,165
Likes: 1
From: Santa Rosa Beach FL
Originally Posted by Scissors
363.922092576 cubic inches
)... and the scariest profile, sig pic and avatar
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 1,165
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From: Santa Rosa Beach FL
Originally Posted by Lazerwolfe
I got 366 because that's the actual conversion from 6 liters (366.14 ci).
I didn't think he cared about the exact displacement figures using bore and stroke.
I didn't think he cared about the exact displacement figures using bore and stroke.
I didn't and appreciate your response!
Race Director
Joined: May 2000
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One liter = 61.02 cubic inches. 6.000L = 366.1 ci.
GM, and most of the auto industry, round displacement to the nearest tenth liter, so the LS2's approximately 5.9+ liter (approximately 364 cubic inches) rounds to 6.0 liters.
GM Powertrain uses metric dimensioning, and the actual nominal bore and stroke of the LS2 are 101.6mm by 92.00mm, which converts to 4.000" by 3.622".
Duke
GM, and most of the auto industry, round displacement to the nearest tenth liter, so the LS2's approximately 5.9+ liter (approximately 364 cubic inches) rounds to 6.0 liters.
GM Powertrain uses metric dimensioning, and the actual nominal bore and stroke of the LS2 are 101.6mm by 92.00mm, which converts to 4.000" by 3.622".
Duke
☠☣☢ Semper Ebrius ☢☣☠
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From: Virginia
Cruise-In IV-V-VI-VII Veteran
St. Jude's Donor '06
I feel kind of bad, since I was somewhat off...
It's 364.12315492167139551077421869563 cubic inches.
Give or take.
It's 364.12315492167139551077421869563 cubic inches.
Give or take.
Last edited by Scissors; Aug 24, 2004 at 01:17 PM.
Racer
Joined: Nov 2003
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From: Ellicott City MD
St. Jude Contributor
Originally Posted by Lazerwolfe
I got 366 because that's the actual conversion from 6 liters (366.14 ci).
I didn't think he cared about the exact displacement figures using bore and stroke.
But I'm not going to argue, especially over 2 cubic inches and engine rounding semantics.
I didn't think he cared about the exact displacement figures using bore and stroke.
But I'm not going to argue, especially over 2 cubic inches and engine rounding semantics.
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 1,165
Likes: 1
From: Santa Rosa Beach FL
Originally Posted by Scissors
It's 364.12315492167139551077421869563 cubic inches.
...and as Mr. Wolfe eluded to earlier, I just wanted a number... I am often at the gas pump and asked by a NASCAR (no flame, I'm a HUGE fan) edition pick-up driver,
"Yeee--HAh Dude! Whot's she got in her??" (my C5). To which I reply, "an all aluminum Chevy 350", I then receive much praise and adoration.
I tried the "It's a 346-ish". no praise. I tried the "It's a 5.7 liter" and got "That's pretty big, huh?" and virtually no adoration...
I'm just preparing for my first C6 encounter one day!!
Safety Car
Joined: Nov 2003
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From: Purdy MO
St. Jude Donor '15-'16,'18,'19-'20
Originally Posted by Torchy2000
Apparently someone has their hedges trimmed a bit early today...
...and as Mr. Wolfe eluded to earlier, I just wanted a number... I am often at the gas pump and asked by a NASCAR (no flame, I'm a HUGE fan) edition pick-up driver,
"Yeee--HAh Dude! Whot's she got in her??" (my C5). To which I reply, "an all aluminum Chevy 350", I then receive much praise and adoration.
I tried the "It's a 346-ish". no praise. I tried the "It's a 5.7 liter" and got "That's pretty big, huh?" and virtually no adoration...
I'm just preparing for my first C6 encounter one day!!
...and as Mr. Wolfe eluded to earlier, I just wanted a number... I am often at the gas pump and asked by a NASCAR (no flame, I'm a HUGE fan) edition pick-up driver,
"Yeee--HAh Dude! Whot's she got in her??" (my C5). To which I reply, "an all aluminum Chevy 350", I then receive much praise and adoration.
I tried the "It's a 346-ish". no praise. I tried the "It's a 5.7 liter" and got "That's pretty big, huh?" and virtually no adoration...
I'm just preparing for my first C6 encounter one day!!
Team Owner
Joined: Jul 2003
Posts: 34,299
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From: [Enter Unoffensive Comment Here]
Cruise-In VI Veteran
Cruise-In VII Veteran
St. Jude Donor '06
Originally Posted by Torchy2000
What is the average flight velocity of an unladen sparrow (African or European)?
South African Swallow
(Hirundo spilodera) European Swallow
(Hirundo rustica)
Although 47 of the 74 worldwide swallow species are found in Africa,1 only two species are named after the continent: the West African Swallow (Hirundo domicella) and the South African Swallow (Hirundo spilodera), also known as the South African Cave Swallow.
Since the range of the South African Swallow extends only as far north as Zaire,2 I felt fairly confident that this was the non-migratory African species referred to in previous discussions of the comparative and cooperative weight-bearing capabilities of African and European swallows.3
Kinematic data for both African species was difficult to find, but the Barn or European Swallow (Hirundo rustica) has been studied intensively, and kinematic data for that species was readily available.
It’s a simple question of weight ratiosA 54-year survey of 26,285 European Swallows captured and released by the Avian Demography Unit of the University of Capetown finds that the average adult European swallow has a wing length of 12.2 cm and a body mass of 20.3 grams.4
Because wing beat frequency and wing amplitude both scale with body mass,5 and flight kinematic data is available for at least 22 other bird species,6 it should be possible to estimate the frequency (f ) and amplitude (A) of the European Swallow by a comparison with similar species. With those two numbers, it will be possible to estimate airspeed (U).
In order to maintain airspeed velocity, a swallow needs to beat its wings forty-three times every second, right?Actually, wrong. By comparing the European Swallow with bird species of similar body mass, we can estimate that the swallow beats its wings 18 times a second with an amplitude of 18 cm:
Species Body mass Frequency Amplitude
Zebra Finch 13 g 27 Hz 11 cm
European Swallow 20 g ≈ 18 Hz? ≈ 18 cm?
Downy Woodpecker 27 g 14 Hz 29 cm
Budgerigar 34 g 14 Hz 15 cm
Note that even the tiny Zebra Finch flaps its wings no more than 27 times a second while cruising.
If we ignore body mass and look only at bird species with a similar wingspan, we can estimate an average frequency of 14 beats per second and an amplitude of 23 cm:
Species Wingspan Frequency Amplitude
Budgerigar 27 cm 14 Hz 15 cm
European Swallow ≈ 28–30 cm ≈ 14 Hz? ≈ 23 cm?
Downy Woodpecker 31 cm 14 Hz 29 cm
European Starling 35 cm 14 Hz 26 cm
By averaging all 6 values, we can estimate that an average European Swallow flies at cruising speed with a frequency of roughly 15 beats per second, and an amplitude of roughly 22 cm.
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 1,165
Likes: 1
From: Santa Rosa Beach FL
Originally Posted by lager99
What do you mean, an African or European Swallow?To begin with, I needed basic kinematic data on African and European swallow species.
I really love you guys, man....
Safety Car
Joined: Feb 1999
Posts: 4,977
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From: Reno NV
Originally Posted by lager99
What do you mean, an African or European Swallow?To begin with, I needed basic kinematic data on African and European swallow species.
South African Swallow
(Hirundo spilodera) European Swallow
(Hirundo rustica)
Although 47 of the 74 worldwide swallow species are found in Africa,1 only two species are named after the continent: the West African Swallow (Hirundo domicella) and the South African Swallow (Hirundo spilodera), also known as the South African Cave Swallow.
Since the range of the South African Swallow extends only as far north as Zaire,2 I felt fairly confident that this was the non-migratory African species referred to in previous discussions of the comparative and cooperative weight-bearing capabilities of African and European swallows.3
Kinematic data for both African species was difficult to find, but the Barn or European Swallow (Hirundo rustica) has been studied intensively, and kinematic data for that species was readily available.
It’s a simple question of weight ratiosA 54-year survey of 26,285 European Swallows captured and released by the Avian Demography Unit of the University of Capetown finds that the average adult European swallow has a wing length of 12.2 cm and a body mass of 20.3 grams.4
Because wing beat frequency and wing amplitude both scale with body mass,5 and flight kinematic data is available for at least 22 other bird species,6 it should be possible to estimate the frequency (f ) and amplitude (A) of the European Swallow by a comparison with similar species. With those two numbers, it will be possible to estimate airspeed (U).
In order to maintain airspeed velocity, a swallow needs to beat its wings forty-three times every second, right?Actually, wrong. By comparing the European Swallow with bird species of similar body mass, we can estimate that the swallow beats its wings 18 times a second with an amplitude of 18 cm:
Species Body mass Frequency Amplitude
Zebra Finch 13 g 27 Hz 11 cm
European Swallow 20 g ≈ 18 Hz? ≈ 18 cm?
Downy Woodpecker 27 g 14 Hz 29 cm
Budgerigar 34 g 14 Hz 15 cm
Note that even the tiny Zebra Finch flaps its wings no more than 27 times a second while cruising.
If we ignore body mass and look only at bird species with a similar wingspan, we can estimate an average frequency of 14 beats per second and an amplitude of 23 cm:
Species Wingspan Frequency Amplitude
Budgerigar 27 cm 14 Hz 15 cm
European Swallow ≈ 28–30 cm ≈ 14 Hz? ≈ 23 cm?
Downy Woodpecker 31 cm 14 Hz 29 cm
European Starling 35 cm 14 Hz 26 cm
By averaging all 6 values, we can estimate that an average European Swallow flies at cruising speed with a frequency of roughly 15 beats per second, and an amplitude of roughly 22 cm.
South African Swallow
(Hirundo spilodera) European Swallow
(Hirundo rustica)
Although 47 of the 74 worldwide swallow species are found in Africa,1 only two species are named after the continent: the West African Swallow (Hirundo domicella) and the South African Swallow (Hirundo spilodera), also known as the South African Cave Swallow.
Since the range of the South African Swallow extends only as far north as Zaire,2 I felt fairly confident that this was the non-migratory African species referred to in previous discussions of the comparative and cooperative weight-bearing capabilities of African and European swallows.3
Kinematic data for both African species was difficult to find, but the Barn or European Swallow (Hirundo rustica) has been studied intensively, and kinematic data for that species was readily available.
It’s a simple question of weight ratiosA 54-year survey of 26,285 European Swallows captured and released by the Avian Demography Unit of the University of Capetown finds that the average adult European swallow has a wing length of 12.2 cm and a body mass of 20.3 grams.4
Because wing beat frequency and wing amplitude both scale with body mass,5 and flight kinematic data is available for at least 22 other bird species,6 it should be possible to estimate the frequency (f ) and amplitude (A) of the European Swallow by a comparison with similar species. With those two numbers, it will be possible to estimate airspeed (U).
In order to maintain airspeed velocity, a swallow needs to beat its wings forty-three times every second, right?Actually, wrong. By comparing the European Swallow with bird species of similar body mass, we can estimate that the swallow beats its wings 18 times a second with an amplitude of 18 cm:
Species Body mass Frequency Amplitude
Zebra Finch 13 g 27 Hz 11 cm
European Swallow 20 g ≈ 18 Hz? ≈ 18 cm?
Downy Woodpecker 27 g 14 Hz 29 cm
Budgerigar 34 g 14 Hz 15 cm
Note that even the tiny Zebra Finch flaps its wings no more than 27 times a second while cruising.
If we ignore body mass and look only at bird species with a similar wingspan, we can estimate an average frequency of 14 beats per second and an amplitude of 23 cm:
Species Wingspan Frequency Amplitude
Budgerigar 27 cm 14 Hz 15 cm
European Swallow ≈ 28–30 cm ≈ 14 Hz? ≈ 23 cm?
Downy Woodpecker 31 cm 14 Hz 29 cm
European Starling 35 cm 14 Hz 26 cm
By averaging all 6 values, we can estimate that an average European Swallow flies at cruising speed with a frequency of roughly 15 beats per second, and an amplitude of roughly 22 cm.