Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 22-12-2009, 22:06   #1
Registered User
 
boat_alexandra's Avatar

Join Date: Aug 2009
Location: chesapeake bay
Boat: bristol 27
Posts: 2,809
Reverse Wind Generator

Why not use an existing wind generator for propulsion? They can then charge batteries when windy, and push boat when calm. (Yes I know there are lots of technical details)
__________________

__________________
boat_alexandra is online now   Reply With Quote
Old 22-12-2009, 22:52   #2
Eternal Member
 
Chief Engineer's Avatar

Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
That's kinda like a towtruck trying to lift itself up.

Of course you could put a big rolls royce merlin engine on the bow to provide the lift over the wing (sail)
__________________

__________________
Chief Engineer is offline   Reply With Quote
Old 23-12-2009, 01:04   #3
Senior Cruiser

Cruisers Forum Supporter

Join Date: Dec 2006
Location: Seattle
Boat: Cal 40
Posts: 2,401
Images: 7
I think you need a wind generator closer to this size





From:
Windmill Sailboat: Sailing Against the Wind : TreeHugger

John
__________________
cal40john is offline   Reply With Quote
Old 23-12-2009, 02:53   #4
Registered User
 
marc2012's Avatar

Join Date: Apr 2008
Location: abbeville la
Boat: seawind II Patience
Posts: 542
Someone once asked what the gen was told them that,they still not speaking to me.lol marc
__________________
marc2012 is offline   Reply With Quote
Old 23-12-2009, 02:55   #5
Ram
Registered User
 
Ram's Avatar

Cruisers Forum Supporter

Join Date: May 2005
Location: Cruising Greece
Boat: Cat in the med & Trawler in Florida
Posts: 2,298
Images: 27
thats funny, but ive had people ask is that whats that for
__________________
Ram is offline   Reply With Quote
Old 23-12-2009, 05:56   #6
Don't ask if you can't handle it
 
sailorboy1's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: On the boat somewhere
Boat: Hunter 410
Posts: 12,313
Quote:
Originally Posted by geckosenator View Post
Why not use an existing wind generator for propulsion? They can then charge batteries when windy, and push boat when calm. (Yes I know there are lots of technical details)
Is this an early April Fool's question?
__________________
sailorboy1 is online now   Reply With Quote
Old 23-12-2009, 05:59   #7
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,331
Quote:
Originally Posted by geckosenator View Post
Why not use an existing wind generator for propulsion? They can then charge batteries when windy, and push boat when calm. (Yes I know there are lots of technical details)
Quote:
Originally Posted by Don Lucas View Post
Is this an early April Fool's question?
Nope, it is just some technical details yet to be solved
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 23-12-2009, 10:51   #8
Registered User

Join Date: May 2008
Location: British Columbia, Mexico
Boat: S&S Hughes 38
Posts: 837
Images: 23
My idea of a reverse wind generator is, setting up 3 or 4 wind generators and large bank,to run small electric motor when its not windy.Somehow coupling with a belt to existing drive shaft so you still have diesel option.
__________________
highseas is offline   Reply With Quote
Old 23-12-2009, 11:08   #9
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 5,830
What's everybody here been smoking? I want some.
__________________
Memento,homo, quia pulvis es, et in pulverem reverteris.
senormechanico is online now   Reply With Quote
Old 23-12-2009, 11:15   #10
CF Adviser
 
Bash's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: sausalito
Boat: 14 meter sloop
Posts: 7,260
technical detail #1

Quote:
Originally Posted by Wotname View Post
Nope, it is just some technical details yet to be solved
Hey, we can make this work! All we've got to do is repeal the law of the conservation of energy.
__________________
cruising is entirely about showing up--in boat shoes.
Bash is offline   Reply With Quote
Old 23-12-2009, 12:09   #11
Registered User
 
boat_alexandra's Avatar

Join Date: Aug 2009
Location: chesapeake bay
Boat: bristol 27
Posts: 2,809
wow

I am surprised so many people find this concept laughable.

To the people who think it is like a towtruck lifting itself or defies conservation of energy, you need to go learn physics you are wrong.

The fact is, boats with an air fan to power them do exist, and it is a working concept. I don't think you could go very fast, but that is ok, I don't like motorized boats that go more than 1-2 knots (might as well be sailing)

Many sailboats (mine included) already have a wind generator capable of about 1hp. This may not be a very efficient way to propel, but I have no other means of propulsion besides rowing, sculling or sailing. It would be a means of backup propulsion and would give great manuverability in tight areas since the wind generator can aim in any direction.

All it requires is bypassing the control circuitry (brushed alternators) to cause the generator to be powered from the battery. It might help to have a dc-dc converter so you can pump more amps in it, and have speed control.
__________________
boat_alexandra is online now   Reply With Quote
Old 23-12-2009, 12:38   #12
Don't ask if you can't handle it
 
sailorboy1's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: On the boat somewhere
Boat: Hunter 410
Posts: 12,313
The engineer part of my has no doubt the technology is easy to do to make the generator become a motor, but really now do you really believe a couple of 1 HP motors with plastic blades is going move your boat? By the time you scale it up in batteries and motor power....well just get a motor. Ivf you are going to put enough batteries on your boat to reverse power just get an electric tolling motor or something.
__________________
sailorboy1 is online now   Reply With Quote
Old 23-12-2009, 12:44   #13
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Houston
Posts: 149
Quote:
Originally Posted by Bash View Post
Hey, we can make this work! All we've got to do is repeal the law of the conservation of energy.
I do understand the point of the comment, however, that law would suggest that if we had spent so many units of effort and time to charge the batteries, then we could extract less than that many units to reverse the process. So, with no real calcs, but just in directional, generic terms: charge the batteries to full over 12 hours, and then run the drive fan for only 3 hrs before the batteries are drained.

One other thing: I am pretty sure that the Law of Conservation of Energy was passed under a previous administration, and may now be subject to congressional review and oversight, so it's hard to know what to predict for the future.

Jim
__________________
Jim D is offline   Reply With Quote
Old 23-12-2009, 14:47   #14
Eternal Member
 
Chief Engineer's Avatar

Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
This part.....................

Belongs on the Joke Thread

Quote:
Originally Posted by Jim D View Post

One other thing: I am pretty sure that the Law of Conservation of Energy was passed under a previous administration, and may now be subject to congressional review and oversight, so it's hard to know what to predict for the future.

Jim
hopeychangey
__________________
Chief Engineer is offline   Reply With Quote
Old 23-12-2009, 15:04   #15
Registered User

Join Date: Mar 2007
Location: Lakeland, FL
Posts: 1,296
I always thought the term "wind generator" was kind of odd. I mean it sort of suggests a device that produces wind - so maybe you're on to something. OTOH, I tried reversing my diesel generator and it didn't produce any diesel at all.

Hmmm ...... time for another beer.
__________________

__________________
"There's nothing . . . absolutely nothing . . . half so much worth doing as simply messing around in boats."

Kenneth Grahame, The Wind in the Willows (River Rat to Mole)
slomotion is offline   Reply With Quote
Reply

Tags
generator, wind generator

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dinelli's Wind Generator bbhflts Electrical: Batteries, Generators & Solar 0 08-09-2009 02:24
Which 400w Wind Generator Is Best boat_alexandra Electrical: Batteries, Generators & Solar 8 01-09-2009 10:03
Wind generator captden Electrical: Batteries, Generators & Solar 2 30-06-2009 01:59
Wind Generator billangiep Electrical: Batteries, Generators & Solar 60 07-06-2008 13:06
wind generator capt lar Electrical: Batteries, Generators & Solar 10 31-08-2005 19:46



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:04.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.