Wrong Wilbur, saw it up close, within 20 odd feet, no repeat no,
auxilliary power involved - straight gearing from windmill, large, to prop.

Vessel was an Iroquise catamaran and when I say the windmill was large
read personal ego, (Yours) proportions.

Max speed into wind apprx 3 knots in force 4, downwind max speed approx 3.5.

I suspect the answer lies in the relative viscosity of the media.

Seeing is believing.

Tony Cook

Can't resist feeding him Andy - He's having a hard time, no double
meaning intended.

TC

"TC" wrote in message
news:MXQRn.31962$nz1.6289@hurricane...
Wrong Wilbur, saw it up close, within 20 odd feet, no repeat no,
auxilliary power involved - straight gearing from windmill, large, to
prop.

Vessel was an Iroquise catamaran and when I say the windmill was large
read personal ego, (Yours) proportions.

Max speed into wind apprx 3 knots in force 4, downwind max speed approx
3.5.

I suspect the answer lies in the relative viscosity of the media.

Seeing is believing.

Tony Cook

Can't resist feeding him Andy - He's having a hard time, no double meaning
intended.

TC



I bet you never saw the boat hauled. I bet you never examined what is inside
the hulls in the way of auxiliary power, battery banks etc.

Get a clue. You and others are way too gullible.


Wilbur Hubbard

I bet you never saw the boat hauled. I bet you never examined what is inside
the hulls in the way of auxiliary power, battery banks etc.

I didn't admittedly but the boatyard did and so did a couple of friends
of mine who were aboard and were given the full tour by the proud owner.

At the risk of appearing rude Wilbur you occasionally give the
impression of being more than somewhat obsessional and egotistical
neither of which are traits which are likely to win friends and may well
influence people in an undesired direction.

"TC" wrote in message
...

I bet you never saw the boat hauled. I bet you never examined what is
inside
the hulls in the way of auxiliary power, battery banks etc.

I didn't admittedly but the boatyard did and so did a couple of friends of
mine who were aboard and were given the full tour by the proud owner.

At the risk of appearing rude Wilbur you occasionally give the impression
of being more than somewhat obsessional and egotistical neither of which
are traits which are likely to win friends and may well influence people
in an undesired direction.




It is easy to confuse arrogance with great knowledge and understanding along
with no scruples about showing it.

Please consider that winning friends is very low on my list of things to do.

A word of advice - believe only about half of what you see and none of what
you hear. That catamaran will not go directly to weather under wind power
alone. Just can't be done. There are simple accepted laws of physics
involved which the ignorant always wish could be circumvented but may not
be.

--
Gregory Hall

On 17/06/2010 00:52, Sir Gregory Hall, Esq. wrote:
wrote in message
...

I bet you never saw the boat hauled. I bet you never examined what is
inside
the hulls in the way of auxiliary power, battery banks etc.

I didn't admittedly but the boatyard did and so did a couple of friends of
mine who were aboard and were given the full tour by the proud owner.

At the risk of appearing rude Wilbur you occasionally give the impression
of being more than somewhat obsessional and egotistical neither of which
are traits which are likely to win friends and may well influence people
in an undesired direction.




It is easy to confuse arrogance with great knowledge and understanding along
with no scruples about showing it.

Please consider that winning friends is very low on my list of things to do.

A word of advice - believe only about half of what you see and none of what
you hear. That catamaran will not go directly to weather under wind power
alone. Just can't be done. There are simple accepted laws of physics
involved which the ignorant always wish could be circumvented but may not
be.

I must indeed be gullible - I fully believe your third paragraph!

Sir Gregory Hall, Esq. wrote:

That catamaran will not go directly to weather under wind
power alone. Just can't be done. There are simple accepted laws of physics
involved which the ignorant always wish could be circumvented but may not
be.

The ignorant fail to understand the simple accepted laws of physics,
and then misapply them. In considering the question whether a catamaran
can go directly upwind, using a propellor powered by a windmill, if it
were the case that this would violate the laws about conservation of
energy and/or momentum, or any other "accepted" laws, then it would
indeed be impossible.

But it doesn't, and therefore it is not necessarily impossible.

If you wish to claim that it would violate any laws, then let's see
you back up that claim with some acceptable reasoning.

You won't, because you can't.

TC wrote:

I suspect the answer lies in the relative viscosity of the media.


It's the speed difference that matters. You can extract power from the
movement between the water and the air, and the fact that you yourself
are moving is largely irrelevant.

The one that made me think was the car that went downwind at over
windspeed. Accelerating it while the wind over the vehicle is zero
takes some thought!

Andy