Reply
 
Thread Tools Display Modes
 
Old 02-20-2013, 06:51 AM   #1
Guru
 
Portuguese's Avatar
 
City: Salvador - BA
Country: Brazil
Vessel Name: Rainha Jannota
Vessel Model: Curruira 46
Join Date: Jun 2011
Posts: 662
Send a message via MSN to Portuguese
Help with Bow Thruster

Gentlemen:

I have had my Side Power thruster stuck in a box for 5 years now. We have just rigged it up properly in its place but I wonder:
Being so long in a box should I do something preventive to avoid problems once in the water?
I have read all the instructions and the user manual and nothing is said about it. I am trying to call Side Power but no answer.

Do you have any ideas?

Thankx

P.
Attached Thumbnails
Click image for larger version

Name:	BT instalado.jpg
Views:	81
Size:	61.8 KB
ID:	16652  
__________________
Advertisement

Portuguese is offline   Reply With Quote
Old 02-20-2013, 07:33 AM   #2
TF Site Team
 
dwhatty's Avatar
 
City: Home Port: Buck's Harbor, Maine
Country: USA
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,733
Contact the service people at Imtra. They have been very helpful to me for past problems/questions.
__________________

__________________
David Hawkins
Deer Isle, Maine
dwhatty is offline   Reply With Quote
Old 02-20-2013, 07:56 AM   #3
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 15,892
The only issue would be seals at the shafts I would think and the rubber gasket if one is used/supplied. I would replace those if they are able to be replaced unless the seals are something that would degrade with age that quickly.
psneeld is online now   Reply With Quote
Old 02-20-2013, 10:46 AM   #4
Guru
 
Codger2's Avatar
 
City: San Diego
Country: US
Vessel Name: "Sandpiper"
Vessel Model: 2006 42' Ocean Alexander Sedan
Join Date: Oct 2007
Posts: 5,420
Quote:
Originally Posted by dwhatty View Post
Contact the service people at Imtra. They have been very helpful to me for past problems/questions.
It looks like you have the new design prop on your thruster. It's suppose to give you 20-30% more thrust than the design I have.
Attached Thumbnails
Click image for larger version

Name:	Bow Thruster.jpg
Views:	129
Size:	45.8 KB
ID:	16656  
__________________
Codger2

My passion for improving my boat(s) exceeds my desire to constantly cruise them.
Codger2 is offline   Reply With Quote
Old 02-20-2013, 04:03 PM   #5
Senior Member
 
Bendit's Avatar
 
City: Auckland
Country: New Zealand
Vessel Name: Pioneer
Vessel Model: Westcoaster 53 converted to pleasure
Join Date: Nov 2007
Posts: 283
Quote:
Originally Posted by SeaHorse II View Post
It looks like you have the new design prop on your thruster. It's suppose to give you 20-30% more thrust than the design I have.
I also have the older design prop and when I spoke to the local agent about upgrading to the new design, he emphasised the reduced noise but wasn't so convincing on increased thrust - so I decided to stick with the old props.
Bendit is offline   Reply With Quote
Old 02-20-2013, 05:09 PM   #6
Guru
 
Portuguese's Avatar
 
City: Salvador - BA
Country: Brazil
Vessel Name: Rainha Jannota
Vessel Model: Curruira 46
Join Date: Jun 2011
Posts: 662
Send a message via MSN to Portuguese
Walt

I think Bendit is correct in his suspicion. The noise obviously will be reduced due to the ahydrodynamic profile of the new prop and the increased number of blades. The thrust could eventualy be improved but far from 20% if there's no iincrement in diameter. I would say thjat the new design, based on reports from other sites, improved in response 2%-5%. Which is outstanding in a 8.7 HP piece of equipment.
They claim that much because they say that the baldes had their area enlarged 20%

P.
Portuguese is offline   Reply With Quote
Old 02-20-2013, 07:01 PM   #7
Master and Commander
 
markpierce's Avatar
 
City: Vallejo CA
Country: USA
Vessel Name: Carquinez Coot
Vessel Model: 2011 Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 10,262
Isn't the normal sound of an electric thruster to be like a "smooth" rock crusher?

__________________
Kar-KEEN-ez Koot
markpierce is offline   Reply With Quote
Old 02-20-2013, 07:02 PM   #8
Guru
 
Codger2's Avatar
 
City: San Diego
Country: US
Vessel Name: "Sandpiper"
Vessel Model: 2006 42' Ocean Alexander Sedan
Join Date: Oct 2007
Posts: 5,420
Quote:
Originally Posted by Bendit View Post
....he emphasised the reduced noise but wasn't so convincing on increased thrust
I've also been told that the new prop designs are "quieter".

For a really quiet running thruster, one must make sure that there is a raised area just forward of the thruster hole in the hull. This directs the water in such a way as to reduce cavitation. (noise) My old boat was not fared this way and it sounded like a meat grinder. I may be wrong on the increased thrust statement as it was at least 5-6 years ago when I talked to the Imtra people. They did say that there was in increase in thrust but I may be wrong about the 20-30%.
Attached Thumbnails
Click image for larger version

Name:	Thruster.jpg
Views:	123
Size:	131.0 KB
ID:	16661  
__________________
Codger2

My passion for improving my boat(s) exceeds my desire to constantly cruise them.
Codger2 is offline   Reply With Quote
Old 02-20-2013, 07:07 PM   #9
Master and Commander
 
markpierce's Avatar
 
City: Vallejo CA
Country: USA
Vessel Name: Carquinez Coot
Vessel Model: 2011 Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 10,262
Walt, everything on/about your boat is first class.
__________________
Kar-KEEN-ez Koot
markpierce is offline   Reply With Quote
Old 02-20-2013, 07:28 PM   #10
Guru
 
Steve's Avatar
 
City: Thibodaux, Louisiana
Country: USA
Vessel Name: Gumbo
Vessel Model: 2003 Monk 36
Join Date: Oct 2007
Posts: 3,607
I like the noise, it notifies folks on the dock to look up and tell me I am "cheating" by using a bow thruster.
Steve W.
Steve is offline   Reply With Quote
Old 02-20-2013, 08:31 PM   #11
Master and Commander
 
markpierce's Avatar
 
City: Vallejo CA
Country: USA
Vessel Name: Carquinez Coot
Vessel Model: 2011 Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 10,262
Ships have thrusters, perhaps azimuths, and even tugs, and most boats have two propellers, so I don't consider a single-propellered boat with a bow thruster to be cheating compared to most everything. Not at all!

__________________
Kar-KEEN-ez Koot
markpierce is offline   Reply With Quote
Old 02-20-2013, 09:50 PM   #12
Guru
 
Northern Spy's Avatar
 
City: Powell River, BC
Country: Canada
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 2,667
Ditto the Imtra call. I also installed an older side power. There may also be an electrical upgrade available to keep the solenoids from ringing. The older joysticks had some issues too.

Wouldn't worry too much about seals. Modern "rubber" has a very long shelf life.
Northern Spy is offline   Reply With Quote
Old 02-20-2013, 09:53 PM   #13
Guru
 
Northern Spy's Avatar
 
City: Powell River, BC
Country: Canada
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 2,667
Quote:
Originally Posted by markpierce View Post
Isn't the normal sound of an electric thruster to be like a "smooth" rock crusher?
No. That is cavitation. Could be due to an unradiused tunnel to hull joint.
Northern Spy is offline   Reply With Quote
Old 02-20-2013, 11:00 PM   #14
Guru
 
Codger2's Avatar
 
City: San Diego
Country: US
Vessel Name: "Sandpiper"
Vessel Model: 2006 42' Ocean Alexander Sedan
Join Date: Oct 2007
Posts: 5,420
Quote:
Originally Posted by Steve View Post
I like the noise, it notifies folks on the dock to look up and tell me I am "cheating" by using a bow thruster.
Steve W.
I had that on my old boat. It's true!
__________________
Codger2

My passion for improving my boat(s) exceeds my desire to constantly cruise them.
Codger2 is offline   Reply With Quote
Old 02-21-2013, 12:33 PM   #15
Guru
 
Codger2's Avatar
 
City: San Diego
Country: US
Vessel Name: "Sandpiper"
Vessel Model: 2006 42' Ocean Alexander Sedan
Join Date: Oct 2007
Posts: 5,420
Quote:
Originally Posted by Bendit View Post
I also have the older design prop and when I spoke to the local agent about upgrading to the new design, he emphasised the reduced noise but wasn't so convincing on increased thrust - so I decided to stick with the old props.
Just got off the phone with the SidePower rep @ Imtra (Peter) and he said the new prop design is definitely quieter and an increase of 5-10% in thrust is a side benefit.
__________________

__________________
Codger2

My passion for improving my boat(s) exceeds my desire to constantly cruise them.
Codger2 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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





All times are GMT -5. The time now is 08:23 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012