logo
Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error
Found a Big M no Isolator
Options View
Previous Topic Next Topic
Capt T
#1 Posted : Wednesday, March 23, 2011 10:04:40 AM(UTC)
Capt T

Rank: Top Rank Aluminum Star

Groups: Member
Joined: 12/5/2007(UTC)
Posts: 276
Points: 658
We just came across a BigM that we welded a new shaft tube in because there is No Galvanic system on the boat and it rotted out , fortunatly we discovered the problem while repacking the shafts. A little help please. Recommendation on a good system to install on a 28 express. and location for purchasing. I have some suppliers but would like to hear feedback from you guys, Thanks
1978 Aft Cabin
Twin Chrysler 440's
Fox Road Marina

My Father once told me "if you ever need a helping hand, just look to the end of your arm!"
Back to top
Sponsor
Please Register : To weed out spammers, new members may not post until approved. An email is usually sent after approval. This forum is for Marinette Owners and other aluminum boat boaters who wish to share boating information. Aluminum Roamer owners are also welcome. (Do not post content you do not have the right to post and mass (robots) posters are unwelcome. We also have a marine electronics page and lots of Chrysler Engine info. State by what permission you copy content and give credit properly.) The site is now fixed with some more Chrysler information. We have space for pictures on the new location. Use shinkpic to autochange size http://www.onthegosoft.com/sp_download.htm

Great Sites - http://www.marinette.com Marinette Company

http://web.me.com/dougmrose/Doug_Roses_Website/Welcome.html

http://fastjeff.tripod.com/ Repair Tricks and Techniques for Marinettes

http://www.greatlakesmarinetteclub.com/

PLEASE post in the appropriate folder. Please, do not post your actual email address in publicly readable websites. The first rule is be a class act.
Back to top  
fastjeff
#2 Posted : Wednesday, March 23, 2011 10:38:04 AM(UTC)
fastjeff

Rank: Administration

Medals: aluminum star: For Marinette Owners Everywhere above the call of duty

Groups: Admin2, Admin2, Admin, Administration, Member
Joined: 12/5/2007(UTC)
Posts: 3,133
Points: 5,732

Was thanked: 34 time(s) in 30 post(s)
You mean a shaft isolator? Marinette Yachts still sells the stock isolator (I believe) or you can buy one of those shaft saver deals that do it as well.

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
Back to top
fastjeff
#3 Posted : Wednesday, March 23, 2011 10:38:05 AM(UTC)
fastjeff

Rank: Administration

Medals: aluminum star: For Marinette Owners Everywhere above the call of duty

Groups: Admin2, Admin2, Admin, Administration, Member
Joined: 12/5/2007(UTC)
Posts: 3,133
Points: 5,732

Was thanked: 34 time(s) in 30 post(s)
You mean a shaft isolator? Marinette Yachts still sells the stock isolator (I believe) or you can buy one of those shaft saver deals that do it as well.

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
Back to top
Capt T
#4 Posted : Wednesday, March 23, 2011 12:39:23 PM(UTC)
Capt T

Rank: Top Rank Aluminum Star

Groups: Member
Joined: 12/5/2007(UTC)
Posts: 276
Points: 658
No Jeff I am talkin about the whole system. There is no Capac system whatsoever on this boat.d'oh!
1978 Aft Cabin
Twin Chrysler 440's
Fox Road Marina

My Father once told me "if you ever need a helping hand, just look to the end of your arm!"
Back to top
Barkleydave
#5 Posted : Wednesday, March 23, 2011 1:08:09 PM(UTC)
Barkleydave

Rank: Marinette Royal Aluminum Poster (300+) posts

Groups: Member
Joined: 12/4/2007(UTC)
Posts: 460
Points: -618

Thanks: 3 times
Was thanked: 7 time(s) in 6 post(s)
Semens is still making the orig. CAPAC unit. Also Zincs.com also offers a portable monitor.

The fact is does not have a monitor installed is NOT the cause of the corrosion.

One must investigate: Isolation, Anodes, Etc.

The Capac unit only is a monitor.

They did build an Impressed Corrosion CAPAC system that was/is suppose to be adjustable to help control galvanic corrosion. Most were disconnected due to over or underprotection concerns. Roamer Yachts used them for years and many caused more problems than they solved.

There are other companies that now build more sophisticated Impressed systems a google search will find most of them.

Best of Luck,

dave
None
Back to top
dougrose
#6 Posted : Wednesday, March 23, 2011 2:46:15 PM(UTC)
dougrose

Rank: Marinette Royal Aluminum Poster (300+) posts

Groups: Member, Administration, Admin
Joined: 12/7/2007(UTC)
Posts: 1,332
Points: 1,746

Was thanked: 25 time(s) in 21 post(s)
Check to make sure that the galvanic isolator between the green shore power and the hull is working. If you have an isolation transformer, you don't need one and you can just not hook up the green from the shorepower. Check for high resistance between the shafts and the hull, and the rudders and the hull. the trim tabs should also be isolated, and most aren't. buy a portable capac because its cheaper and you won't have the pain of dealing with the sensor everytime the hull is getting painted.


1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida
Back to top
Users browsing this topic
guest
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF 1.9.5.5 | YAF © 2003-2011, Yet Another Forum.NET
This page was generated in 0.060 seconds.