Wanna Save Fuel? - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest Forums > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #1  
Old 01-18-2009
camaraderie's Avatar
moderate?
 
Join Date: May 2002
Location: East Coast
Posts: 13,878
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 14
camaraderie is a jewel in the rough camaraderie is a jewel in the rough camaraderie is a jewel in the rough
Wanna Save Fuel?

Ran across this on Nigel Calder's Blog and was pretty amazed at the numbers.
Hey FastBttms...you might wanna distribute this around the docks!

"In the meantime, we discovered something really noteworthy with this summer’s limited test program. We had a propeller with just a few barnacles on it. As compared to a polished propeller, it increased the fuel consumption for a given boat speed by up to 50%, and dropped the boat speed for a given shaft speed by up to 30%. At the moment, the most cost effective way to improve efficiency under power is to regularly clean the propeller!"
__________________
No longer posting. Reach me by PM!
Reply With Quote Share with Facebook
  #2  
Old 01-19-2009
.
 
Join Date: Nov 2006
Posts: 10,855
Thanks: 0
Thanked 3 Times in 2 Posts
Rep Power: 12
Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice Giulietta is just really nice
good thing I have a sailboat.....

you know...move by the force of wind....wind creating lift...ahh I quit...you've allways been a motor boy anyway...
Reply With Quote Share with Facebook
  #3  
Old 01-19-2009
TxLnghrn's Avatar
Ignoring Trolls in 2009
 
Join Date: Apr 2008
Location: Houston, TX
Posts: 453
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
TxLnghrn is on a distinguished road
Cam,
I heard somewhere that a magnet made by Algae-X can save you even more fuel than some "test" by Nigel Calder whoever he is.
__________________
S/V Anything Goes
1987 Pearson 31-2
Hull #15
Reply With Quote Share with Facebook
  #4  
Old 01-19-2009
Senior Member
 
Join Date: Sep 2006
Posts: 2,179
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Rockter will become famous soon enough
"A few barnacles"?
"50%"?

It would need more than a few to do that, methinks.

Last edited by Rockter; 01-19-2009 at 09:44 AM.
Reply With Quote Share with Facebook
  #5  
Old 01-19-2009
Joesaila's Avatar
1977 Morgan OI 30
 
Join Date: May 2007
Location: Massachusetts
Posts: 438
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
Joesaila is on a distinguished road
[QUOTE

[SIZE=3][FONT=Times New Roman]"In the meantime, we discovered something really noteworthy with this summer’s limited test program. We had a propeller with just a few barnacles on it. As compared to a polished propeller, it increased the fuel consumption for a given boat speed by up to 50%, and dropped the boat speed for a given shaft speed by up to 30%.[/QUOTE]

If I read that correctly, leaving a 'few' barnicles on my prop will make my Morgan slug go twice as fast Then I'm not going to clean it off, I have exactly 3 good size barnicles...
__________________
My formula for living is quite simple. I get up in the morning and I go to bed at night. In between, I occupy myself as best I can.
Cary Grant
Reply With Quote Share with Facebook
  #6  
Old 01-19-2009
nk235's Avatar
Senior Member
 
Join Date: Apr 2007
Location: Long Island
Posts: 404
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
nk235 is on a distinguished road
Quote:
Originally Posted by Rockter View Post
"A few barnacles"?
"50%"?

It would need more tha a few to do that, methinks.
Actually I could believe that. Last year I before dunking my boat for the season, I forgot to paint my prop with any type of anti-fouling paint or spray. Once the water got warm about 2 months into the season I went for a swim to clean the prop...it was nasty with 3 inch long strands of growth and barnacles. Once it was polished clean I noticed the boat seemed to jump out of the hole when put in forward. I couldn't believe how much just cleaning the prop did as I could be doing the same speed at 1100 rpms as I was previosuly doing at 1900.
__________________
Morgan 323
Reply With Quote Share with Facebook
  #7  
Old 01-19-2009
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 8 Times in 8 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Just a few would really cause a lot more cavitation, and the increased turbulence would greatly affect the prop's ability to push water...
Quote:
Originally Posted by Rockter View Post
"A few barnacles"?
"50%"?

It would need more tha a few to do that, methinks.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #8  
Old 01-19-2009
Senior Member
 
Join Date: Sep 2006
Posts: 2,179
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Rockter will become famous soon enough
It's better smooth, yes. I wonder would a "few" barnacles do it though?

Maybe. I know not.
I'll scrape mine clean, next tide, but there are no tides in Loch Ness.
Reply With Quote Share with Facebook
  #9  
Old 01-19-2009
camaraderie's Avatar
moderate?
 
Join Date: May 2002
Location: East Coast
Posts: 13,878
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 14
camaraderie is a jewel in the rough camaraderie is a jewel in the rough camaraderie is a jewel in the rough
Hey Giu...some guy on a Hanse on your dock called this morning to say there was a problem on your boat. Not to worry...he said he took care of it!
__________________
No longer posting. Reach me by PM!
Reply With Quote Share with Facebook
  #10  
Old 01-19-2009
US27inKS's Avatar
Midwest Puddle Pirate
 
Join Date: Feb 2005
Location: Gardner, KS
Posts: 2,160
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
US27inKS has a spectacular aura about US27inKS has a spectacular aura about
Quote:
Originally Posted by Rockter View Post
"A few barnacles"?
"50%"?

It would need more than a few to do that, methinks.
You should try sewing a couple of small kites (sticking straight out of course) to your sails and see how much it affects your sailing performance. It's the same thing.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
John USYacht 27 "Cora Lee"
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bleeding your Yanmar Engine artbyjody Gear & Maintenance 34 03-13-2013 02:03 AM
Myth of Condensation in Fuel Tanks Martinini General Discussion (sailing related) 47 08-03-2009 01:22 PM
Universal M21, long story and fuel line question BarryL Gear & Maintenance 16 05-12-2008 03:37 PM
Diesel Fuel Essentials Tom Wood Gear and Maintenance Articles 0 03-22-2004 07:00 PM
Diesel Fuel Essentials Tom Wood Her Sailnet Articles 0 03-22-2004 07:00 PM


All times are GMT -4. The time now is 03:44 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012