How Can the Sub9 Produce Negative Drag?
#1
Generic Title
Thread Starter
Join Date: Dec 2007
Location: North Carolina
Posts: 1,927
Bikes: 2008 Trek Fuel EX7, 2007 Trek 1600, 2007 Eastern Warthog
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
How Can the Sub9 Produce Negative Drag?
In other words, if you threw the wheel through a gravityless chamber, even if the chamber had air, the Sub9 would suposedly accelerate endlessly. I by no means am a physics genius, but isn't (EDIT- I'm questioning this, as in IT'S IMPOSSIBLE.)
A) Perpetual motion impossible
and
B) It impossible for an object with surface area to have zero (or less than) drag?
A) Perpetual motion impossible
and
B) It impossible for an object with surface area to have zero (or less than) drag?
__________________
Generic Joke
Generic Joke
Last edited by ProFail; 04-07-08 at 08:52 PM.
#2
Blast from the Past
A new source of renewable energy? Just build a giant Sub9 and hook a generator to it.
#3
Burning Matches.
Join Date: Jan 2006
Location: San Jose, CA
Posts: 9,714
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 4076 Post(s)
Liked 1,001 Times
in
675 Posts
In other words, if you threw the wheel through a gravityless chamber, even if the chamber had air, the Sub9 would suposedly accelerate endlessly. I by no means am a physics genius, but isn't
A) Perpetual motion impossible
and
B) Impossible for an object with surface area to have zero (or less than) drag?
A) Perpetual motion impossible
and
B) Impossible for an object with surface area to have zero (or less than) drag?
__________________
ElJamoquio didn't hate the world, per se; he was just constantly disappointed by humanity.
#6
Generic Title
Thread Starter
Join Date: Dec 2007
Location: North Carolina
Posts: 1,927
Bikes: 2008 Trek Fuel EX7, 2007 Trek 1600, 2007 Eastern Warthog
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
#7
Generic Title
Thread Starter
Join Date: Dec 2007
Location: North Carolina
Posts: 1,927
Bikes: 2008 Trek Fuel EX7, 2007 Trek 1600, 2007 Eastern Warthog
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
#8
Dumb@s$ Jarhead
Join Date: Sep 2005
Location: Woodland Park CO
Posts: 1,110
Bikes: Calfee Dragon Fly Pro 1984 Pinarello Montello
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
use search
__________________
Si vis pacem, para bellum
Si vis pacem, para bellum
#9
Wheelsuck
Join Date: Jun 2007
Posts: 6,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
You sell more.
There is _no_ way that a wheel makes true thrust. I've done a fair bit of aerodynamic testing (tunnels and real world). It ain't F'n happenin'.
What sucks is that all they have to say is 'It's really, really good', which is true. But, no, that's not good enough. They have to say that it violates the 2nd law of thermodynamics. Sorry folks, you don't get _anything_ for free.
There is _no_ way that a wheel makes true thrust. I've done a fair bit of aerodynamic testing (tunnels and real world). It ain't F'n happenin'.
What sucks is that all they have to say is 'It's really, really good', which is true. But, no, that's not good enough. They have to say that it violates the 2nd law of thermodynamics. Sorry folks, you don't get _anything_ for free.
#10
Wheelsuck
Join Date: Jun 2007
Posts: 6,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
#11
purity of essence
Join Date: Feb 2006
Location: NH
Posts: 2,260
Bikes: 2018 Giant Trance 2, 2019 Trek Farley 7, 2017 Jamis Renegade Exploit
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 37 Post(s)
Likes: 0
Liked 26 Times
in
11 Posts
for $4k a set, they should provide sexual favors along with the negative drag.
#12
Senior Member
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Posts: 12,258
Bikes: Bianchi, Miyata, Dahon, Rossin
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 5 Times
in
5 Posts
sailboats cannot make headway against the wind - Modern designs zig zag into the wind.
the Dallas Cowboys are America's team - Who?
As for the "negative drag" I think the marketing department couldn't understand what the engineers were saying.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
#13
Senior Member
Join Date: Feb 2006
Location: Atlanta
Posts: 7,681
Bikes: Pedal Force QS3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
If you buy one Fabian Cancellara rides beside you and gives you a push.
__________________
15% Hammer Nutrition Discount Code
15% Hammer Nutrition Discount Code
#15
Burning Matches.
Join Date: Jan 2006
Location: San Jose, CA
Posts: 9,714
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 4076 Post(s)
Liked 1,001 Times
in
675 Posts
You sell more.
There is _no_ way that a wheel makes true thrust. I've done a fair bit of aerodynamic testing (tunnels and real world). It ain't F'n happenin'.
What sucks is that all they have to say is 'It's really, really good', which is true. But, no, that's not good enough. They have to say that it violates the 2nd law of thermodynamics. Sorry folks, you don't get _anything_ for free.
There is _no_ way that a wheel makes true thrust. I've done a fair bit of aerodynamic testing (tunnels and real world). It ain't F'n happenin'.
What sucks is that all they have to say is 'It's really, really good', which is true. But, no, that's not good enough. They have to say that it violates the 2nd law of thermodynamics. Sorry folks, you don't get _anything_ for free.
__________________
ElJamoquio didn't hate the world, per se; he was just constantly disappointed by humanity.
#16
Burning Matches.
Join Date: Jan 2006
Location: San Jose, CA
Posts: 9,714
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 4076 Post(s)
Liked 1,001 Times
in
675 Posts
Two out of three ain't bad.
__________________
ElJamoquio didn't hate the world, per se; he was just constantly disappointed by humanity.
#17
Senior Member
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Posts: 12,258
Bikes: Bianchi, Miyata, Dahon, Rossin
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 5 Times
in
5 Posts
I like it when people use big words they don't understand, like the marketing department for sub9s and thermodynamics.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
#18
Bike ≠ Car ≠ Ped.
Zipp's side of it is that at a given angle of attack from the wind, the wheel gains some lift, in a sense similar to a Frisbee or a sailboat's sail.
Possible? Sure, probably. Worth my money? HA. My inherent drag will negate any possible benefit.
Possible? Sure, probably. Worth my money? HA. My inherent drag will negate any possible benefit.
#21
Senior Member
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Posts: 12,258
Bikes: Bianchi, Miyata, Dahon, Rossin
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 5 Times
in
5 Posts
You need a fin, not just the sail actually
essentially you have one wing sticking in the wind and the other wing in the water which makes a sail boat that generates lift and propels it upward, but the angle the ship tilts at makes it go forward.
essentially you have one wing sticking in the wind and the other wing in the water which makes a sail boat that generates lift and propels it upward, but the angle the ship tilts at makes it go forward.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
#22
Senior Member
Join Date: Jun 2007
Location: Brooklyn
Posts: 324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
This may help- https://nyvelocity.com/article.aspx?ID=2125&CID=54
#23
Senior Member
Join Date: May 2005
Posts: 6,900
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
If that is the case pretty soon we will start seeing rear spoilers on bikes.
#24
Bike ≠ Car ≠ Ped.
This may help- https://nyvelocity.com/article.aspx?ID=2125&CID=54
https://www.velocitynation.com/articl...ID=1755&CID=54
Interesting how Zipp arrived at that shape by building the bulge to reinforce their disc wheel for a clincher rim.
And in his closing in the first article, "So in the end we're talking about an $1875 wheel with undeniable geek appeal that saves you 24 seconds over 40k." Somebody will find value there, just not me.
#25
Bike ≠ Car ≠ Ped.