Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-07-2008, 04:22 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Feb 2008
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Motor, battery and solar panels for a boat

Hello. I'm new to this forum and it looks like you know a lot about modding cars. Same princibles can be applied on water. Atleast the motors and batteries. I'm trying to find info about what kind of motor (power) I can supply with solar power on a sunny day. That all depends largely on the solar panels used. What kind of solar panels are out there and for what price? Is it still better to go with sails than with solar power? I'm not thinking of high speeds or a big boat, but speed is surely helpful in some cases.

Requirements for the boat: able to carry 4-6 people and sleep in it, cook food and move about even if the sun doesnot shine all day.
So I'll need lots of batteries to store the energy when I can get it. What is the best (cheapest/lightest)?

I read that you salvage big dc motors from forklifts. I think those would be very good for a boat also. Is there some other machinery which has salvage potential?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-07-2008, 04:44 PM   #2 (permalink)
Master EcoModder
 
Ryland's Avatar
 
Join Date: Jan 2008
Location: Western Wisconsin
Posts: 3,904

honda cb125 - '74 Honda CB 125 S1
90 day: 79.71 mpg (US)

green wedge - '81 Commuter Vehicles Inc. Commuti-Car

Blue VX - '93 Honda Civic VX
Thanks: 867
Thanked 432 Times in 353 Posts
there are a number of reasons that boats have sails, cloth is cheap and light is a big one, the other is that water has very little resistance for the wind, altho it's also reflective, it is pretty well agreed on that if you are near water wind power is the way to go, if you want something a big weird, go for kite power.
solar on a boat is best for powering things like lights, and the radio.
price for solar, just for the panals tend to be $4-5 per watt of output, and you might get 5 hours of sun per day if you are on the water, so at best you would get one watt per dollar per day... not bad, add the cost of a battery bank to that and you have enough to power some lights, add a 5,000 watt motor (like is on a forklift) and sudenly your house is morgaged.
  Reply With Quote
Old 02-07-2008, 04:51 PM   #3 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,235

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.8 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 55.99 mpg (US)
Thanks: 2,988
Thanked 5,875 Times in 3,045 Posts
Hi Wyern,

You can probably find some of the information about solar & battery requirements at links like this:



http://www.tamarackelectricboats.com/


The owner of this company is a member of one of the local electric vehicle lists I'm on. (He also just placed his order for an Aptera EV.)



http://www.transatlantic21.org/boat/

This one crossed the Atlantic last year on solar power.

You may not be going for that scale, but there's information on both sites that will help you figure out what size motor, battery bank & solar array you may want.


I don't have a lot of experience with electric boats. Here's mine:


(details about my e-boat)

Doesn't sleep 4-6 people though

EDIT: this summer I made a solar powered boat:



Details: http://ecomodder.com/forum/showthrea...sion-9015.html
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 02-07-2008, 07:36 PM   #4 (permalink)
Awesomeness personified
 
AndrewJ's Avatar
 
Join Date: Dec 2007
Location: Columbia, MO
Posts: 642

Harold - '94 Honda Civic CX
90 day: 54.51 mpg (US)

Margot - '08 Surly Big Dummy
Thanks: 0
Thanked 27 Times in 17 Posts
Send a message via AIM to AndrewJ
yur pic broke Darin!
__________________
"I got 350 heads on a 305 engine. I get 10 miles to the gallon. I ain't got no good intentions." - The Drive By Truckers.

  Reply With Quote
Old 02-07-2008, 07:49 PM   #5 (permalink)
Nomadic Chicken
 
WaxyChicken's Avatar
 
Join Date: Jan 2008
Location: Phoenix, AZ
Posts: 350
Thanks: 2
Thanked 0 Times in 0 Posts
One thing that can help you down the road when you are modding your boat is the use of hydrofoils. The most resistance to movement that a boat gets is due to the amount of water that it has to push out of the way. By lifting your boat off the water, or simply having less boat in the water, you will improve your MPG or batt efficiency. Most hydrofoils act as a wing and, as you move forward, LIFT up your boat. There is also the pontoon approach which also can reduce water resistance.

Hydrofoil:


You are asking what equipment other than forklifts have good motor salvage chances. Are you looking for speed or power? (eg: light and fast, or heavy)
  Reply With Quote
Old 02-07-2008, 08:02 PM   #6 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,235

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.8 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 55.99 mpg (US)
Thanks: 2,988
Thanked 5,875 Times in 3,045 Posts
Quote:
Originally Posted by AndrewJ View Post
yur pic broke Darin!
You can't see my electric boat?

EDIT: pic fixed.

Waxy: true about higher efficiency on foils. The big challenge is having a good enough POWER to weight ratio to get a displacement hull out of the water and up onto the foils.
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 02-08-2008, 03:06 PM   #7 (permalink)
Master EcoModder
 
Ryland's Avatar
 
Join Date: Jan 2008
Location: Western Wisconsin
Posts: 3,904

honda cb125 - '74 Honda CB 125 S1
90 day: 79.71 mpg (US)

green wedge - '81 Commuter Vehicles Inc. Commuti-Car

Blue VX - '93 Honda Civic VX
Thanks: 867
Thanked 432 Times in 353 Posts
If you do put solar on a boat, POINT THEM AT THE SUN, panals that lay flat are getting a fraction of the sun they would if they were st up at an angle, and if you are relying on them for powering your boat it becomes a poor use of the panals.
  Reply With Quote
Old 02-08-2008, 03:37 PM   #8 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,235

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.8 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 55.99 mpg (US)
Thanks: 2,988
Thanked 5,875 Times in 3,045 Posts
True enough. It's kind of like putting up a sail, and then not trimming it for the wind!
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 02-08-2008, 10:34 PM   #9 (permalink)
Master EcoModder
 
basjoos's Avatar
 
Join Date: Dec 2007
Location: Upstate SC
Posts: 1,048

Aerocivic - '92 Honda Civic CX
Last 3: 70.54 mpg (US)

AerocivicLB - '92 Honda Civic CX
Team Honda
90 day: 55.14 mpg (US)
Thanks: 6
Thanked 547 Times in 266 Posts
If you angle the solar panels at the sun while there is a stout wind blowing, the panel might start acting as an imprompto sail with unintended consequences. Also if the boat is bobbing around in heavy seas, if might be difficult to keep the panels pointed at the sun.
__________________
aerocivic.com
  Reply With Quote
Old 02-09-2008, 12:18 AM   #10 (permalink)
EV test pilot
 
bennelson's Avatar
 
Join Date: Jan 2008
Location: Oconomowoc, WI, USA
Posts: 4,405

Electric Cycle - '81 Kawasaki KZ440
90 day: 334.6 mpg (US)

S10 - '95 Chevy S10
90 day: 30.48 mpg (US)

Electro-Metro - '96 Ben Nelson's "Electro-Metro"
90 day: 129.81 mpg (US)

The Wife's Car - Plug-in Prius - '04 Toyota Prius
90 day: 78.16 mpg (US)
Thanks: 14
Thanked 610 Times in 359 Posts


Last summer, I was zipping around on my electric motorcycle. Stopped to talk to a guy with a golf cart. He mentioned that he had seen a guy on the lake with an electric boat.

I tracked down the boat owner and spoke with him.
He has a Duffy Electric Boat

The boat uses 12 Trojan 125s (6V each) in two parrallel 36V legs. The on-board charger is 15 amp 120V. Zips around the lake all day. Goes around 10 mph.

This boat uses a GE golf cart motor.

This boat has a roof shade, so solar panels could be installed on top, but why bother if you can just charge up at the dock?

Otherwise, if you are more into sailing, get an ok sized sail boat, set it up with an electric motor and batteries, use that to get in and out of port, and use the sails while out in the open.

Sailboats sometimes also use wind turbines. They are cheaper for the power output, but solar is so slick because of its quiet simplicity.

The photo at the top uses the same motor I have in my motorcycle. Here is an interesting little web page about an electric boat conversion

__________________


300mpg.org Learn how to BUILD YOUR OWN ELECTRIC CAR CHEAP
My YouTube Videos
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY Solar charged electric scooter MetroMPG Fossil Fuel Free 4 01-10-2008 12:27 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com