It was about jibing downwind. Here's a rather technical article describing the sail
design for IACC boats.

"While it is impossible to sail directly upwind, it is possible to sail directly
downwind but as shown in Fig. 3, with true wind speeds such as 5 m/s,
the optimum VMG occurs with a true wind angle of 150 degrees."

http://mapp1.de.unifi.it/persone/All...chards2001.pdf

BTW, its either jibe or gybe, not jybe. That's about as silly as saying "ded reckoning."

"Simple Simon" wrote in message
news
It wasn't all about jybing downwind.


"Jeff Morris" jeffmo@NoSpam-sv-lokiDOTcom wrote in message
...
"Simple Simon" wrote in message
...

Show me an America's cup where on a dead downwind leg boats are
jybing downwind and coming out ahead and I might give a little credence
to your nonsense. The races I've watched show these cutting edge vessels
running straight downwind and only turning slightly now and then to
keep boats upwind of them from blocking their wind.


This has got to be the dumbest thing you've said in, well, at least a few days.

Perhaps you will recall that they showed the downwind "laylines" - what do you think
that
was about?

I watched some of the races on TV and they did not gybe downwind.

Btw 'jibing' is incorrect unless one is using a jib to run downwind
which is pretty stupid because a spinnaker works much better.

Jybing or gybing are the corrent terms.

PUTZ!


"Jeff Morris" jeffmo@NoSpam-sv-lokiDOTcom wrote in message ...
It was about jibing downwind. Here's a rather technical article describing the sail
design for IACC boats.

"While it is impossible to sail directly upwind, it is possible to sail directly
downwind but as shown in Fig. 3, with true wind speeds such as 5 m/s,
the optimum VMG occurs with a true wind angle of 150 degrees."

http://mapp1.de.unifi.it/persone/All...chards2001.pdf

BTW, its either jibe or gybe, not jybe. That's about as silly as saying "ded reckoning."

"Simple Simon" wrote in message
news
It wasn't all about jybing downwind.


"Jeff Morris" jeffmo@NoSpam-sv-lokiDOTcom wrote in message
...
"Simple Simon" wrote in message
...

Show me an America's cup where on a dead downwind leg boats are
jybing downwind and coming out ahead and I might give a little credence
to your nonsense. The races I've watched show these cutting edge vessels
running straight downwind and only turning slightly now and then to
keep boats upwind of them from blocking their wind.


This has got to be the dumbest thing you've said in, well, at least a few days.

Perhaps you will recall that they showed the downwind "laylines" - what do you think
that
was about?

"Simple Simon" wrote:
I watched some of the races on TV and they did not gybe downwind.

Then you have an exceptionally bad eye. The rest of the world watched them jibe downwind,
turning through rather substantial angles. Even when they where headed apart, they were
nowhere close to dead downwind.


Btw 'jibing' is incorrect unless one is using a jib to run downwind
which is pretty stupid because a spinnaker works much better.

Jybing or gybing are the corrent terms.


On which planet is "jybing" used? It doesn't appear in the online dictionaries
referenced by dictionary.com. Google shows only 108 occurrences on the web, as opposed to
over 10,200 for "jibing" and "gybing" has 5800 hits. Bowditch, BTW, uses "gybing."





"Jeff Morris" jeffmo@NoSpam-sv-lokiDOTcom wrote in message
...
It was about jibing downwind. Here's a rather technical article describing the sail
design for IACC boats.

"While it is impossible to sail directly upwind, it is possible to sail directly
downwind but as shown in Fig. 3, with true wind speeds such as 5 m/s,
the optimum VMG occurs with a true wind angle of 150 degrees."

http://mapp1.de.unifi.it/persone/All...chards2001.pdf

BTW, its either jibe or gybe, not jybe. That's about as silly as saying "ded
reckoning."

"Simple Simon" wrote in message
news
It wasn't all about jybing downwind.


"Jeff Morris" jeffmo@NoSpam-sv-lokiDOTcom wrote in message
...
"Simple Simon" wrote in message
...

Show me an America's cup where on a dead downwind leg boats are
jybing downwind and coming out ahead and I might give a little credence
to your nonsense. The races I've watched show these cutting edge vessels
running straight downwind and only turning slightly now and then to
keep boats upwind of them from blocking their wind.


This has got to be the dumbest thing you've said in, well, at least a few days.

Perhaps you will recall that they showed the downwind "laylines" - what do you
think
that
was about?

Like the author of "Cruising the Racer and Racing the Cruiser" says "the only
reason to buy a full keel boat is if you expect to be able to visit remote
islands and need to be able to lay it on it's side during low tide to paint the
bottom"
S/V Express 30 "Ringmaster"
Trains are a winter sport

WHAT!!!??? ... you can't careen a fin keeler???.... Ha Ha Ha Ha Ha ha!

You fin keelers are so funny....... and insignificant!

CM

"SAIL LOCO" wrote in message
...
| Like the author of "Cruising the Racer and Racing the Cruiser" says "the
only
| reason to buy a full keel boat is if you expect to be able to visit remote
| islands and need to be able to lay it on it's side during low tide to
paint the
| bottom"
| S/V Express 30 "Ringmaster"
| Trains are a winter sport

Simple,

Your statement is absolutely wrong and completely off the wall. It is
wrong in theory and it is wrong in actuality.

Neal, before you take this into a argument, please look at a copy of the
polar performance curve for mono hulls. You will see that for a wind
blowing 5 knts or less, your vessel cannot exceed the speed of the wind
going dead downwind. Neal, now look at the speed of the vessel sail at a
150 degree angle (30 deg delta) a pick up of a knt and a half. A .583%
increase in speed)

I picked the 30 Deg angle because it is easier to visualize. ( 30x60
triangle) Now visualize a unit of travel directly downwind and the
distance of the vessel at 150 for the same unit of time. You will see
that the vessel at 30 degrees off dead downwind traveled .593 times
farther. Now, I know the base of the triangle isn't quite equal to twice
the distance traveled but close enough for this old beached sailor. So,
the vessel off the wind is .093% farther downwind and time to gybe back
to course. Now sailing a course of 210 deg, traveling 1.593 times faster
and will be back on the original course 18% farther downwind than the
boat slogging along dead downwind.

Now if you had ever raced in the Cruising Class ( No Flying Sail) you
would know this to be true. I know you don't want to agree that a boat
can exceed the speed of the wind going downwind but you are DEAD WRONG.
I've tried before to tell you the things you can do to increase off wind
speed but I see you are still living in the dark about it.

Don't lead the newbees astray with your lack of knowledge and experience
but many,many times I've returned to the Leeward mark with large gains
over boats traveling dead downwind wing and wing.

Ole Thom

I'm talking spinnakers here big boy! Only a fool eschews a
spinnaker on a downwind run.


"Thomas Stewart" wrote in message ...
Simple,

Your statement is absolutely wrong and completely off the wall. It is
wrong in theory and it is wrong in actuality.

Neal, before you take this into a argument, please look at a copy of the
polar performance curve for mono hulls. You will see that for a wind
blowing 5 knts or less, your vessel cannot exceed the speed of the wind
going dead downwind. Neal, now look at the speed of the vessel sail at a
150 degree angle (30 deg delta) a pick up of a knt and a half. A .583%
increase in speed)

I picked the 30 Deg angle because it is easier to visualize. ( 30x60
triangle) Now visualize a unit of travel directly downwind and the
distance of the vessel at 150 for the same unit of time. You will see
that the vessel at 30 degrees off dead downwind traveled .593 times
farther. Now, I know the base of the triangle isn't quite equal to twice
the distance traveled but close enough for this old beached sailor. So,
the vessel off the wind is .093% farther downwind and time to gybe back
to course. Now sailing a course of 210 deg, traveling 1.593 times faster
and will be back on the original course 18% farther downwind than the
boat slogging along dead downwind.

Now if you had ever raced in the Cruising Class ( No Flying Sail) you
would know this to be true. I know you don't want to agree that a boat
can exceed the speed of the wind going downwind but you are DEAD WRONG.
I've tried before to tell you the things you can do to increase off wind
speed but I see you are still living in the dark about it.

Don't lead the newbees astray with your lack of knowledge and experience
but many,many times I've returned to the Leeward mark with large gains
over boats traveling dead downwind wing and wing.

Ole Thom

I've careened my shoal draft fin-keeler many a time. Give me
four feet of tide and a good sandbar and I can slap a coat of
bottom paint on in no time.


"Capt. Mooron" wrote in message ...
WHAT!!!??? ... you can't careen a fin keeler???.... Ha Ha Ha Ha Ha ha!

You fin keelers are so funny....... and insignificant!

CM

"SAIL LOCO" wrote in message
...
| Like the author of "Cruising the Racer and Racing the Cruiser" says "the
only
| reason to buy a full keel boat is if you expect to be able to visit remote
| islands and need to be able to lay it on it's side during low tide to
paint the
| bottom"
| S/V Express 30 "Ringmaster"
| Trains are a winter sport

Give me
four feet of tide and a good sandbar and I can slap a coat of
bottom paint on in no time.

And right over the slime and brown furry stuff I'll bet.


S/V Express 30 "Ringmaster"
Trains are a winter sport