Electric Sail Boat Motor - Page 3 - SailNet Community
 1Likes
Reply
 
LinkBack Thread Tools
post #21 of 160 Old 12-02-2009
JCR
Junior Member
 
Join Date: Nov 2009
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Scotty,

I have authorization from Electric Yacht to install Electric Sailboat kits and have designed, installed and sea tested propulsion drives as well. There are many companies offering electric boat conversion motors, controllers, reducers and complete kits including Solidnav, Asmo Marine, Electric Yacht, Solomon, EV sports, Vetus, Oz Marine, Elco, etc. Some kits start at $1,500 but buyer beware they do not include motor mounting hardware. Batteries to power your new electric propulsion system are never included. You might keep in mind that every boat is different and one does not fit all. If you have a sailboat or powerboat you want to convert to electric propulsion I would like to help.

My interest in propulsion design & engineering and elecric motor systems in boats goes back 10 years but advances in battery power density did not catch up until about 2006. There are many ways to push boats with electric motor propulsion. If someone tells you to use this kind of motor there are 10 other people that will tell you about 10 other motors. Some will recommend DC and others swear by AC and everything in between. The most important thing to consider if you are going to convert your boat from gas or diesel to electric propulsion is safety. The Underwriters Laboratories (UL) is in the process of developing national saftey standards for battery pack use in electric vehicles as is the SAE.

JCR

Last edited by JCR; 12-03-2009 at 08:47 PM. Reason: Add info
JCR is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #22 of 160 Old 12-02-2009
Currently, between boats.
 
ChicagoNewport27's Avatar
 
Join Date: Nov 2006
Location: Chicago, IL
Posts: 112
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Here is an example of a guy that repowered his Newport 28 with a Re-E-Power electric engine:
E-POD 3000+ - Petaris' Photos

We've been discussing it over on the Capital Yachts/Newport mailing list, here:
Yahoo! Groups

To quote the owner, Justin Paulsen:
Quote:
Well the first thing that I'll mention is that it has torque. Forward and reverse are both very responsive and since we back in to the slip it has made a big difference. We are still really getting used to the system, even though this was season 2 with it, as since we installed it we haven't had a lot of time to use it. Though it has had some good tests. The hull speed has slowed and there is a bit more drag when sailing. The batteries have never run out and I have given them a good 8 hours of use before charging them again. We are kind of guessing we could get 10 hours or maybe more out of them but haven't tested that yet, though I hope to next season. The recharge time is long and I usually let it go overnight but I would say its a good 5 hours maybe a bit more, though some of that is float time. I took the photos of the corrosion so that Kevin at Re-E-Power could see them and advise on it. He said that it wouldn't be an issue. That was after one season in the water and my seasons are generally the middle to the end of May until the first weekend in November. It didn't affect the operation of the motor though. By the way Kevin has been very helpful with any issues that have come up with the system though he can be difficult to get a hold of.

There have been issues though. For one the controller kept overheating the first season even after adding cooling fins and fans, though they did help a lot, and we had to have the prop pitch changed on Kevin's advice, we sent it to him and he had it done and sent back to us (he paid for all but sending it to him). Also the controller is something we came up with as the one that came with it was just tiny, ours is to but since we changed it we were able to mount it on the tiller which is both a great place for it, convenience wise, and a not so great place as its easy to bump with your leg.

Last edited by ChicagoNewport27; 12-02-2009 at 08:32 PM.
ChicagoNewport27 is offline  
Quote Quick Reply Share with Facebook
post #23 of 160 Old 12-02-2009
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,509
Thanks: 0
Thanked 96 Times in 87 Posts
Rep Power: 8
   
Why would the hull speed slow and why would there be more drag while sailing?

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #24 of 160 Old 12-02-2009
Member
 
huguley3's Avatar
 
Join Date: May 2007
Location: Stuart FL
Posts: 236
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Quote:
Originally Posted by mitiempo View Post
Why would the hull speed slow and why would there be more drag while sailing?
They probably meant top speed. My diesel was smallish anyway so a replacement electric probably would have given me the same top speed had I went that route. The electrics can recharge the batteries while sailing by letting the spinning prop run the engine like an alternator. That adds some drag to keep the prop spinning. Even more so since most places recommend a larger prop on the electric.

--

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
30' Islander Bahama
huguley3 is offline  
Quote Quick Reply Share with Facebook
post #25 of 160 Old 12-03-2009
STARBOARD!!
 
KeelHaulin's Avatar
 
Join Date: Mar 2006
Posts: 1,662
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 11
   
Quote:
Originally Posted by mitiempo View Post
Why would the hull speed slow and why would there be more drag while sailing?
The motor is in a pod mounted beneath the hull; and the prop looks more like a powerboat prop than one designed for a sailboat.
KeelHaulin is offline  
Quote Quick Reply Share with Facebook
post #26 of 160 Old 12-03-2009
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,509
Thanks: 0
Thanked 96 Times in 87 Posts
Rep Power: 8
   
Oh, I see.

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #27 of 160 Old 12-03-2009
Senior Member
 
Join Date: Dec 2009
Location: Long Beach CA
Posts: 235
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
 
Quote:
Originally Posted by JCR View Post
Cool

Tell me more about your boat, engine, propeller shaft speed and the existing saildrive.

JCR
JCR,
The boat is a custom built Lancer 36, originally
built as a race boat with minimal furniture.
The boat displaces 10,500 lbs on 29' LWL, so
it is very easily driven.
The engine is a Volvo MD 11C with a 110S Saildrive.
When I am able to get the machine started, which has always
been an issue, it will push the boat at 7.5 knots at 2500 rpm.
The shaft output is rated at 17 kW at that speed.
The ratio is 1.66:1.
The current prop is a 2 blade fixed , maybe a 16"x11", it seems
to be too much prop and the acceleration will throw off your
feet when you ease it in to gear. I will eventually go with a
folding prop of some sort.
I am guessing that I will not need a thrust bearing for the belt
drive, but I will build a composite structure to support the
Saildrive, since it was supported by the engine.
i do not know how yet to configure the ground loop
for the electrical system, that was connected to the
engine block.
My expectation is to get into and out of the slip,
we are sailors and not motorsailors.

Last edited by COOL; 12-03-2009 at 01:46 PM.
COOL is offline  
Quote Quick Reply Share with Facebook
post #28 of 160 Old 12-04-2009
Junior Member
 
Join Date: May 2009
Location: Manassas, VA
Posts: 18
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Quote:
Originally Posted by ChicagoNewport27 View Post
Here is an example of a guy that repowered his Newport 28 with a Re-E-Power electric engine:
E-POD 3000+ - Petaris' Photos
I looked at these pictures a while back and the ones on the last page look like the motor is in bad shape. So he is still happy with it and it's working?
silverbranch is offline  
Quote Quick Reply Share with Facebook
post #29 of 160 Old 12-04-2009
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,509
Thanks: 0
Thanked 96 Times in 87 Posts
Rep Power: 8
   
I want to start by saying that I know almost nothing about electric boat propulsion. But after looking at all 165 pics in the link that was posted I have some questions. Why is the motor mounted like it is below the hull? It doesn't look too good in the last few pics I agree. Why not mount the motor inside the hull and use a normal shaft, stern bearing, and cutlass? Wouldn't this protect the motor a bit better? The angle of the prop looks wrong as well - the forward end of the nacelle is higher than tha aft end, resulting in a prop that is nowhere near the angle a normal fuel powered boat has for its shaft.

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #30 of 160 Old 12-04-2009
Senior Member
 
tommays's Avatar
 
Join Date: Sep 2008
Posts: 4,296
Thanks: 1
Thanked 30 Times in 30 Posts
Rep Power: 7
 


This would seem to be a pretty BADLY failed project as you still dealing with saildrives and other motors big issue water infiltration through seals and corrosion

1970 Cal 29 Sea Fever

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1981 J24 Tangent 2930
Tommays
Northport NY


If a dirty bottom slows you down what do you think it does to your boat
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by tommays; 12-04-2009 at 05:24 AM.
tommays is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
The Joys and Pitfalls of Buying a New Boat - Part 1 Lin & Larry Pardey Buying a Boat Articles 26 01-12-2015 10:59 AM
The Basics of Reefing Mark Matthews Seamanship Articles 0 03-29-2004 07:00 PM
Sailing Basics Steve Colgate Seamanship Articles 0 03-09-2003 07:00 PM
Sailing Basics Steve Colgate Her Sailnet Articles 0 03-09-2003 07:00 PM
Sail Trim Steve Colgate Learning to Sail Articles 0 05-10-2000 08:00 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome