Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 05-04-2017, 09:13   #16
Marine Service Provider
 
boatpoker's Avatar

Join Date: Nov 2008
Location: Whitby, Ontario or Bahamas
Boat: Benford 38 Fantail Cruiser
Posts: 4,044
Re: Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by Thumbs Up View Post
volvo saildrives are isolated
Yup ! two opinions of the same issue. Volvo will void your warranty if you bond them. Yanmar will void your warranty if you don't. Kind of tough for the average guy with a multimeter to see who's philosophy is correct.
__________________

__________________
That hysterical laughter you hear as you sail a way in your "new" boat ..... is the seller.
boatpoker is offline   Reply With Quote
Old 06-04-2017, 13:11   #17
Registered User
 
deluxe68's Avatar

Join Date: Apr 2009
Location: Arizona/Rhode Island
Boat: Swan 432
Posts: 811
Re: Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by Thumbs Up View Post
volvo saildrives are isolated
For a while, Beneteau 36.7's were delivered to owners with the drives grounded to the Yanmar engines. A 36.7 owner over at SailingAnarchy pointed this out to me. Not sure if the factory was screwing this up or if it was the dealers.
__________________

deluxe68 is offline   Reply With Quote
Old 06-04-2017, 13:36   #18
Marine Service Provider
 
boatpoker's Avatar

Join Date: Nov 2008
Location: Whitby, Ontario or Bahamas
Boat: Benford 38 Fantail Cruiser
Posts: 4,044
Re: Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by deluxe68 View Post
For a while, Beneteau 36.7's were delivered to owners with the drives grounded to the Yanmar engines. A 36.7 owner over at SailingAnarchy pointed this out to me. Not sure if the factory was screwing this up or if it was the dealers.
As previously posted in this thread ......

Volvo will invalidate the warranty if the drive is bonded.
Yanmar will invalidate the warranty if the drive is NOT bonded.

Yanmar agrees with the ABYC requirement of bonding, Volvo does not.
__________________
That hysterical laughter you hear as you sail a way in your "new" boat ..... is the seller.
boatpoker is offline   Reply With Quote
Old 06-04-2017, 13:50   #19
mrm
Registered User

Join Date: Feb 2011
Location: Poland, EU
Boat: crew on Bavaria 38 Cruiser
Posts: 653
Re: Saildrive Protection - EUREKA! or waste of time & $$

In our case - VP engine and VP saildrive - the saildrive is isolated. Just another data point.
mrm is offline   Reply With Quote
Old 16-01-2020, 18:36   #20
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 11,791
Re: Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by belizesailor View Post
Galvanically the sail drive is already designed to be isolated from engine. If you are wasting zincs quickly then you/neighbor/marina have an electrical issue. This is why I dont like to stow in marinas long term.

When leaving mine in water long term (6 months). I remove the props (easy to do in water) and bag the sail drives with heavy duty trash bags. This eliminates at lot of growth.
Just unbagged the saildrives after 7 months of in water storage. Here is a pic of all the growth that was NOT on my saildrives.

Stored in a small marina w no electricity at docks...those pics of sail drives that look like rotten swiss cheese give me the willies! Click image for larger version

Name:	20200116_173302.jpg
Views:	71
Size:	86.1 KB
ID:	207061
belizesailor is offline   Reply With Quote
Old 20-01-2020, 03:03   #21
Registered User

Join Date: Nov 2019
Posts: 553
Re: Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by grjfield View Post
I'm wondering whether anyone has ever thought of isolating their saildrive in order to prolong the saildrive zincs, as well as inhibiting growth on the prop. Over the winter both hard and hairy creatures set up housekeeping on my prop, requiring a short dive to scrap them off. As well the fun task of replacing the saildrive zincs will soon rear its ugly head.

The thought occurred to me to protect the saildrive by fashioning a large watertight cup to sit under it..making gentle contact with the hull. By making the cup slightly buoyant, and flooding the cup with freshwater via 2 tubes up to the deck, I may be able to evict the little critters and at least forestall the effects of zinc deterioration.

The partying creatures dont bother me much as it involves a fun 1/2 hour dive. However, solving the zinc deterioration would save $$$ (haulage, zincs from England for the Sillette saildrive).

Has anyone ever considered this, or tried to fashion a saildrive protection device (other than zincs)?
...or am I delusional with way too much time on my hands!

I would welcome any comments, both pro and con, on the idea.

regards
Chill E Bear
The best way to protect a sail drive is to use antifoul on the hull that does not contain copper oxide

Copper oxide on the hull is bad for saildrives...and violates warranty
slug is online now   Reply With Quote
Old 20-01-2020, 03:52   #22
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 4,080
Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by slug View Post
The best way to protect a sail drive is to use antifoul on the hull that does not contain copper oxide



Copper oxide on the hull is bad for saildrives...and violates warranty


How does a copper-based paint that is not on the saildrive adversely affect it?
fstbttms is offline   Reply With Quote
Old 20-01-2020, 04:09   #23
Registered User

Join Date: Nov 2019
Posts: 553
Re: Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by fstbttms View Post
How does a copper-based paint that is not on the saildrive adversely affect it?

https://www.yanmar.com/us/wp-content...-Corrosion.pdf

The surface area of the copper hull overcomes the anodes ability

Any exposed underwater aluminum...sail drive, rudder bearing ..then becomes an anode

Not good
Attached Thumbnails
Click image for larger version

Name:	EEB1561C-73D6-4F84-BAE8-A1F9D5191654.jpg
Views:	28
Size:	149.3 KB
ID:	207297  
slug is online now   Reply With Quote
Old 20-01-2020, 07:47   #24
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 4,080
Re: Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by slug View Post
https://www.yanmar.com/us/wp-content...-Corrosion.pdf



The surface area of the copper hull overcomes the anodes ability



Any exposed underwater aluminum...sail drive, rudder bearing ..then becomes an anode



Not good


That is simply Yanmar covering their asses. I would venture to guess that over 99% of all boats fitted with saildrives are also painted with copper-based anti fouling paint. Nothing bad is happening to those boats. Its standard operating procedure.
fstbttms is offline   Reply With Quote
Old 20-01-2020, 08:04   #25
Moderator
 
Pete7's Avatar

Cruisers Forum Supporter

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 12,997
Images: 14
Re: Saildrive Protection - EUREKA! or waste of time & $$

Been a while but I seem to remember that International Paints recommended leaving a one inch gap on the transom around a stern drive to ensure copper paint didn't touch the aluminium. I painted this strip with the same paint as the leg, Trilux. Sadly it's only a medium strength antifouling, so needs a good scrub if you are in a high fouling area.

Pete
Pete7 is offline   Reply With Quote
Old 20-01-2020, 08:23   #26
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 4,080
Re: Saildrive Protection - EUREKA! or waste of time & $$

Quote:
Originally Posted by slug View Post
...and violates warranty
There is nothing in the service advisory you posted stating that this is the case.
__________________

fstbttms is offline   Reply With Quote
Reply

Tags
rot, sail, saildrive

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Volvo engine with saildrive vs Yanmar engine with saildrive dave cooper Propellers & Drive Systems 25 30-04-2015 17:27
Irwin Mechanic: Recommendations for Eureka, California shieek Engines and Propulsion Systems 0 27-04-2011 10:50
Eureka! New House Afloat for our Four Girls neurotica Families, Kids and Pets Afloat 3 03-12-2009 10:47
Saildrive or Not to Saildrive? Sid22 Engines and Propulsion Systems 13 23-11-2009 15:55
EUREKA!! (but advice needed) ssullivan Monohull Sailboats 38 10-04-2007 21:27

Advertise Here


All times are GMT -7. The time now is 17:37.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.