Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-01-2015, 16:42   #16
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 19,750
Quote:
Originally Posted by markpierce View Post
My 24-volt bow thruster runs well off the house batteries 12 feet distant.
Same here, except it's 20 feet. 10 horsepower Sleipner Side Power; works like a charm.

24v helps a lot; cables are of a reasonable size. Dedicated batts are a lot of weight in the bow where you really don't want it.
__________________

__________________
"Parce que je suis heureux en mer, et peut-ętre pour sauver mon ame. . . "
Dockhead is online now   Reply With Quote
Old 23-01-2015, 16:48   #17
Registered User
 
Neeltje's Avatar

Join Date: Mar 2014
Location: Saint Augustine, Florida
Boat: 1902 Dutch Tjalk, 64'
Posts: 297
Re: Bow Thruster Advice

Quote:
Originally Posted by markpierce View Post
My 24-volt bow thruster runs well off the house batteries 12 feet distant.
I'm sure it does, but if his thruster is going to be more than twice as far from said batteries, the leads as well as the draw are going to be exponentially bigger. I like knowing that at least one of my thrusters will probably work in a pinch, and that neither of them will drain the house batteries in the process.
__________________

__________________
Neeltje is offline   Reply With Quote
Old 23-01-2015, 17:08   #18
Registered User
 
markpierce's Avatar

Join Date: Aug 2010
Location: Central California
Boat: M/V Carquinez Coot
Posts: 3,415
Re: Bow Thruster Advice

Quote:
Originally Posted by Neeltje View Post
... I like knowing that at least one of my thrusters will probably work in a pinch, and that neither of them will drain the house batteries in the process.
Yes, but the electrical power has to come from some source which could equally serve any battery. Better not use the starter battery for propulsion engine and genset, however. I'm comfortable using the house batteries.
__________________
Kar-KEEN-ez Koot
markpierce is offline   Reply With Quote
Old 23-01-2015, 17:44   #19
Senior Cruiser

Cruisers Forum Supporter

Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 1,703
Re: Bow Thruster Advice

Electric will be the cheapest to install. Especially if you have to pay to have it done. The hydraulic pieces will be more expensive. But, hydraulics often run for decades without component replacement. You have full power as long as the drive engine is running. Maintenance is looking at oil level, belts, fitting and hoses. Batteries have a limited life and in high amperage use need to be checked often. Electrical connections can be troublesome in marine environment. High amp motors are prone to overheating/shorter life if used for extended periods. Etc. I have run marine electrical and hydraulic motors since the 50's. Ships, tugs and commercial fishing. Over time, hydraulics are more reliable and need the fewest repairs. Eco oil is available that doesn't leave a sheen if you leak.
__________________
Lepke is offline   Reply With Quote
Old 24-01-2015, 18:03   #20
Registered User

Join Date: Mar 2012
Location: Eugene OR
Boat: Luders Cheoy Lee 36
Posts: 15
Re: Bow Thruster Advice

Thank you all for your thoughts, boat is in the Port Townsend area. Will take her to Gold Star and get their thoughts in February. They did really nice work on our sailboat a few years back so think I will get their bid. Any thoughts of another shop in the Seattle to Port Townsend area ?
__________________
Moonshine36 is offline   Reply With Quote
Old 25-01-2015, 07:08   #21
cruiser

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: Bow Thruster Advice

Quote:
Originally Posted by markpierce View Post
Yes, but the electrical power has to come from some source which could equally serve any battery. Better not use the starter battery for propulsion engine and genset, however. I'm comfortable using the house batteries.
Some folks recommend powering the thruster from the start battery figuring that the engine is already running and the start battery may be more appropriate for short term, high current use (like a starter).

My thruster is powered by the house bank and my batteries are all the same (AGM) and the house bank has a much larger capacity. I'm comfortable with that. Pretty much either way will work.

I think having a dedicated battery or bank for a bow thruster adds an unnecessary level of complexity. You have to keep it charged but you have to prevent the thruster from trying to draw current through the charging circuit or the other batteries from trying to draw current from the thruster battery. You cant just connect it in parallel with the house or start batteries.
__________________
rwidman is offline   Reply With Quote
Old 27-01-2015, 16:03   #22
Registered User
 
Biggusstickus's Avatar

Join Date: Feb 2014
Location: Tas, Australia
Boat: Mustang 3800
Posts: 65
Re: Bow Thruster Advice

I run a bow thruster off my house batteries (2 of) and its around 20ft away. Never had any issues with it. Maintenance is easy and simple, occasional oil top up, clean and replace anode, anti-foul tunnel and thats it.
__________________
Biggusstickus is offline   Reply With Quote
Old 27-01-2015, 18:39   #23
Registered User
 
rcmpegasus's Avatar

Join Date: Sep 2008
Location: San Diego & Port Townsend
Boat: Formosa 51 Ketch
Posts: 143
Images: 1
Send a message via Skype™ to rcmpegasus
Re: Bow Thruster Advice

I had a bow thruster installed at the Shipwright Coop there in port Townsend. Super work and about 1/3 less than Gold. Dan did the glass and tube and Chris Brignoli the electrical, it was a 24 v Sidepower unit.


Sent from my iPad using Cruisers Sailing Forum
__________________
Bob Mathews
S/V Pegasus
rcmpegasus is offline   Reply With Quote
Old 07-03-2015, 19:06   #24
Registered User

Join Date: Nov 2012
Posts: 120
Re: Bow Thruster Advice

A bow thruster is a high-load, short duration device. House batteries are not designed for this service. Engine starting batteries are. (Same for your windlass.) If you need to add another starting battery to your circuit, that's fine, but I would not recommend using your house batteries for a thruster because it will wear them out prematurely. (Experience speaking here...$$$!) If you have to add a separate battery, make it a high capacity starting battery and put it in the bow. Wire the windlass to this battery too, and then your house and engine starting battery banks will last longer and be protected from excess wear and damage. Also, get a long set of jumpers and you can use the windlass/thruster battery as a backup to start your engine if you have to. Check your charger; some of them can handle three separate circuits when you're plugged in to the beach.
__________________

__________________
rhubstuff is offline   Reply With Quote
Reply

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
Bow Thruster bottleinamessage Propellers & Drive Systems 33 11-11-2011 02:21
Bow Thruster and/or Windlass Battery Type? S/V Illusion Electrical: Batteries, Generators & Solar 13 23-08-2009 17:29
Bow thruster lbarnes Propellers & Drive Systems 7 24-08-2008 08:10
Bow Thruster for CSY 44 Capt'n Harry Monohull Sailboats 7 04-09-2007 10:17
What No Bow Thruster Pura Vida Off Topic Forum 3 02-05-2007 19:23



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:59.


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.