Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 21-12-2010, 10:30   #46
Marine Service Provider
 
fastcat435's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Amstelveen Netherlands
Boat: FastCat 445 Green Motion
Posts: 1,649
Images: 10
Send a message via Skype™ to fastcat435
Hallo Flybridge , so far we have sailed 12000 NM over the last year and the system works perfect, we have 5 more cats under construction that all will be equipped with the same system , 3 x with dual 10 KW Motogens for the FastCat 445 1 x with dual 20 KW motogens for the new FastCat 61 and a 50 ft eco Powercat with 2 x 20 kw steerable motogens. A software program is under development to automatically adjust rpm to get the highest charge. We have gone for larger 4 bladed props 18x 9 to increase charge efficiency and increase efficiency when under power. in the second half of January we will launch the 2nd Green Motion FastCat 445 .
Greetings
__________________

__________________
fastcat435 is offline   Reply With Quote
Old 21-12-2010, 12:12   #47
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,042
"we have sailed 12000 NM over the last year and the system works perfect,"
Meaning, something like 1000 hours of propellors turning the motors as generators and recharging the systems, plus time spent under power? With the batteries being cycled to what depth, what percent of full capacity are they still able to come back up to? 100%?

Interesting to see how the technology plays out in the real world.
__________________

__________________
hellosailor is offline   Reply With Quote
Old 21-12-2010, 12:23   #48
Marine Service Provider
 
fastcat435's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Amstelveen Netherlands
Boat: FastCat 445 Green Motion
Posts: 1,649
Images: 10
Send a message via Skype™ to fastcat435
Hellosailor we have set the automatic discharge to 80 % ( we use Lithium Iron Batteries ) max discharge is 90 % , so far after numerous discharges we still get to 100 % charge.
__________________
fastcat435 is offline   Reply With Quote
Old 21-12-2010, 13:07   #49
Registered User

Join Date: Jul 2010
Location: Sydney Australia
Boat: Mariner 31
Posts: 36
Hi Fastcat

Do you have any data on any power boat conversions or original construction?

As I've mentioned in previous posts I can't see why the gen set can't be running all to time to run the system.

Kind Regards
__________________
Flybridge 31 is offline   Reply With Quote
Old 22-12-2010, 08:28   #50
Marine Service Provider
 
fastcat435's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Amstelveen Netherlands
Boat: FastCat 445 Green Motion
Posts: 1,649
Images: 10
Send a message via Skype™ to fastcat435
Hallo Flybridge 31 , the gen set can run all the time but the units we use are automatic so when the battery voltage is 90 % it switches off and start again at 40 %
Please mail us for additional info so we can send it to you.
I have attached pictures of how we install the Motogens in the new Eco Power cat

Greetings
Attached Thumbnails
Click image for larger version

Name:	IMG_06122010_115128.jpg
Views:	149
Size:	128.5 KB
ID:	22165   Click image for larger version

Name:	204-Final1.jpg
Views:	127
Size:	309.9 KB
ID:	22166  

__________________
fastcat435 is offline   Reply With Quote
Old 05-05-2011, 02:16   #51
Registered User

Join Date: Dec 2010
Posts: 3
Re: Electric Propulsion Systems Available

Hi all of you,

There is a question in my mind that, which propulsion system is better than electric or hybrid for pleasure craft?

and there is another question regarding this

which are the companies which made electric propulsion system for pleasure craft or yachts?


reply me

Thanks in advance

Regards to all

gaurav
__________________
gaurav bokdia is offline   Reply With Quote
Old 05-05-2011, 07:09   #52
Registered User

Join Date: Oct 2010
Boat: 1975 Pearson 35
Posts: 145
Re: Electric Propulsion Systems Available

I have had some electric drive time under me, not on a boat but hard use and not much care, I've run GE Elec-Traks for years, these were build in the late '60s to early '80s, How many of you have 40 year old lawn tractors still running? these things can be run hard for years then be left in a field for years, put in new batteries and off it goes agian, the motors are amazing, there is more than one moving part in most, you have bearings too, and brushes wear. The big limiting thing with electric drive is the batteries. A hybrid system with LiFePO4 batteries sounds like a good package.
I'm thinking of trying to put together one, a 3GM30F and a pair of 2.5 hp GE shunt motors, I just want something that will run electric for 15-30 minutes, just to get out of the harbor or up to a dock, no need to start the diesel, let it warm up, run it for a few minutes, let it cool down, then shut it down, the diesel is still there for long runs
__________________
Juniper is offline   Reply With Quote
Old 05-05-2011, 07:28   #53
Registered User
 
JamuJoe's Avatar

Join Date: Feb 2008
Location: Durango, CO
Boat: Leopard 42 - JAMU
Posts: 190
Images: 13
Re: Electric Propulsion Systems Available

In my opinion, electric propulsion for sailboats, both cruisers and day sailors, will certainly become more economical and practical as battery technology advances. The potentials lies not in comparison to large commercial diesel-electric installations, but in automotive electric drives. The automotive industry will drive the mass production of advanced batteries and controls that will make small scale marine installations more economical. Yachts will have the advantage of more space for solar charging and regenerative charging through the propeller when there is sufficient wind for propulsion, with a small engine for supplemental charging.
__________________

__________________
Safe Sailing,
JamuJoe - Durango, CO
S/V JAMU - Western Caribbean
JamuJoe is offline   Reply With Quote
Reply

Tags
propulsion

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
electric propulsion system peter.bomberg Multihull Sailboats 19 12-12-2008 19:26
Electric propulsion conversions Southbound Engines and Propulsion Systems 5 12-12-2008 07:30
Range using electric propulsion Hankthelank Monohull Sailboats 33 03-08-2008 03:57
Alternate propulsion AnchorageGuy Engines and Propulsion Systems 17 31-07-2008 00:14



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 18:36.


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.