Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-01-2010, 09:21   #1
Registered User
 
markpj23's Avatar

Join Date: Nov 2005
Location: Black Hills, SD
Boat: Now Boatless
Posts: 1,148
Images: 47
Question Do You 'Bag' Your Props?

Heard a discussion about bagging props to help prevent growth. What type of bag works - plastic, burlap, what? Is it worth the trouble?
__________________

__________________
Mark
markpj23 is offline   Reply With Quote
Old 23-01-2010, 09:32   #2
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
If you scrape them once a month it usually is good enough. Applied products tend to last 9 months at best. Higher salt and water temperatures makes them grow faster.
__________________

__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 25-01-2010, 09:29   #3
Senior Cruiser
 
bstreep's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: San Antonio, TX/Port Aransas, TX
Boat: 1990 Macintosh 47, "Merlin"
Posts: 2,274
A buddy of mine bags his. Uses black trash bags. Swears by them.

I tried it once, and it DOES work. But, you have to dive twice (once to remove it and once to tie one back on) for each trip. If you don't use the boat much, it's probably worth it. During the growing season down here, I try and do the prop every 2 weeks. I can do it in 6 dives that way. If I let it go, I have to get the hookah out.
__________________
Bill Streep
San Antonio/Port Aransas, TX
bstreep is offline   Reply With Quote
Old 25-01-2010, 09:34   #4
Registered User
 
James S's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: Yemen & Lebanon... the sailboat is in Lebenon, the dhow is in Yemen
Boat: 1978 CT48 & 65ft Cargo Dhow
Posts: 5,816
Images: 139
Never heard of it...but I'll get mine copper electro plated next time It comes off.
__________________
James
S/V Arctic Lady
I love my boat, I can't afford not to!
James S is offline   Reply With Quote
Old 25-01-2010, 10:47   #5
Ram
Registered User
 
Ram's Avatar

Cruisers Forum Supporter

Join Date: May 2005
Location: Cruising Greece
Boat: Cat in the med & Trawler in Florida
Posts: 2,298
Images: 27
im gonna try it next fall for the winter
__________________
Ram is offline   Reply With Quote
Old 25-01-2010, 11:10   #6
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,369
I never did, but wish I had thought of it. If you are staying somewhere more than a week or two max I definitely would! You're going to be inthe water to scrape the bottome before you leave anyway, nothaving to scrape the prop would be nice...
__________________
Cheechako is offline   Reply With Quote
Old 25-01-2010, 18:12   #7
Senior Cruiser
 
Jim Cate's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 11,466
G'Day,

We've only done it once -- last year when we had to leave the boat in Oz (tropical Queensland) for an indeterminate period. Used a kinda heavy plastic bag from some duty free grog bought in Vanuatu, tied it with 1/8 " VB cord. Came back five months later, bag had LOTS of growth on it, prop none! So, yes, it works, but it's too much of a PITA for short term use.

Cheers,

Jim and Ann s/v Insatiable II lying Broken Bay, NSW Oz
__________________
Jim Cate is offline   Reply With Quote
Old 25-01-2010, 21:56   #8
Registered User
 
Laidback's Avatar

Join Date: Jun 2007
Posts: 853
Works well, black plastic keeps out light preventing algae growth - Which will happen if one uses clear or white bags. Also attach a thin trip line to remove the bag to save dive when ready to depart.
__________________
Laidback is offline   Reply With Quote
Old 26-01-2010, 18:40   #9
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,056
A black plastic bag should prevent algae and barnacles from growing. No circulating water = no food for the barnacles, and no new spawn to drift in. No light means no algae will grow, either.

I've been tempted to pull a black plastic sock over the entire underbody and dose it with bleach, except, I suspect the bleach would start to eat the hull and prop as well. :-)
__________________
hellosailor is offline   Reply With Quote
Old 26-01-2010, 19:41   #10
Registered User

Join Date: Dec 2009
Location: Gold Coast
Boat: self design cat in progress
Posts: 41
I've tried it too. It worked great for me. The fisho that told me about it used a trip line that didn't work very well but he said it was good to be there to remind him when he next was going to sea!
__________________
why me? is offline   Reply With Quote
Old 26-01-2010, 21:59   #11
Registered User
 
Laidback's Avatar

Join Date: Jun 2007
Posts: 853
The Bag's trip system - here's a very rough sketch
Attached Thumbnails
Click image for larger version

Name:	Black Plastic Bag.jpg
Views:	122
Size:	187.1 KB
ID:	12830  
__________________
Laidback is offline   Reply With Quote
Old 27-01-2010, 00:45   #12
Registered User

Join Date: Dec 2009
Location: Gold Coast
Boat: self design cat in progress
Posts: 41
That looks sensible Laidback.

I just dove on mine to release.

Thanks for taking the time to make the sketch!
__________________
why me? is offline   Reply With Quote
Old 27-01-2010, 04:33   #13
Registered User
 
Laidback's Avatar

Join Date: Jun 2007
Posts: 853
suppose the best reason is to remind one that there is something on your prop that needs taking off before you go anywhere
__________________
Laidback is offline   Reply With Quote
Old 27-01-2010, 10:58   #14
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Instead of a bag, you can also grease the prop. Just dive down with some water resistant grease in your hands and coat it.

Using a bag, I would want to be able to shred it in an emergency to regain propulsion, so I would test that.

ciao!
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 27-01-2010, 12:53   #15
Registered User

Join Date: Nov 2006
Posts: 257
You won't have very good luck shredding a plastic bag with your prop. I wrapped one in a screw inadvertantly two years ago. The bag did shread, but wrapped itself all around my prop and shaft. This compounded the problem by cutting off the water flow to the cutlass bearing and vibrating the heck out of the shaft.

Brett
__________________

__________________
LtBrett 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
Green Bag Alternative Entlie Provisioning: Food & Drink 8 19-10-2009 14:20
Ideal Ditch Bag or Abandon Ship Bag Cyrus Safdari Health, Safety & Related Gear 37 22-09-2009 16:50
Ditch Bag Contents Caribsailors Health, Safety & Related Gear 15 28-02-2009 10:33
Ditch bag Jack Long Health, Safety & Related Gear 2 04-10-2008 05:50
Ditch bag contents? Panama Dave Health, Safety & Related Gear 9 29-09-2006 07:29



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 02:09.


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.