I have a new blog entry on rudders - Page 2 - 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 > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #11  
Old 10-11-2011
Senior Member
 
Join Date: Oct 2011
Location: Naniamo B.C.
Posts: 1,778
Thanks: 2
Thanked 27 Times in 27 Posts
Rep Power: 3
Capt Len is on a distinguished road
Ruffel's dorsal

Bob .Here's a link to several photos of Ruffels (J1) Orca Network Incredible Photos page Scroll down down. I first met him in a kelp forest near Bedwell Harbour in 1978. Len on the Thane
Reply With Quote Share with Facebook
  #12  
Old 10-11-2011
grumpy old man
 
Join Date: Apr 2011
Posts: 3,651
Thanks: 1
Thanked 74 Times in 70 Posts
Rep Power: 4
bobperry will become famous soon enough
Kwalt:
Yes, I agree. With a wide stern you can use some overghang aft to clean up the wake and gain some sailing length so you are not dragging the transom corners. Bow overhangs have pretty much dissapeared. I think it is a mistake to lump bow and stern overhang efficiency together. I like some bow overhang on my cruising boats so I can get the ground tackle clear of the stem.
Reply With Quote Share with Facebook
  #13  
Old 10-11-2011
Senior Member
 
Join Date: Oct 2011
Location: Naniamo B.C.
Posts: 1,778
Thanks: 2
Thanked 27 Times in 27 Posts
Rep Power: 3
Capt Len is on a distinguished road
Bob .Here's a link to several photos of Ruffels (J1) Orca Network Incredible Photos page Scroll down down. I first met him in a kelp forest near Bedwell Harbour in 1978. Len on the Thane
Orca Network Incredible Photos page
Reply With Quote Share with Facebook
  #14  
Old 10-11-2011
grumpy old man
 
Join Date: Apr 2011
Posts: 3,651
Thanks: 1
Thanked 74 Times in 70 Posts
Rep Power: 4
bobperry will become famous soon enough
Kwalt:
I'm not seeing tubercles on the Orca dorsal fin. They don't use that fin to generate power so I'm not sure why they would have tubercles there. I think, like the Humpback, you would see them on the pec fins but I don't see them there either. Do you?

Those are some great pics.
Reply With Quote Share with Facebook
  #15  
Old 10-11-2011
jameswilson29's Avatar
Senior Smart Aleck
 
Join Date: Aug 2009
Location: Richmond, Virginia
Posts: 2,070
Thanks: 28
Thanked 67 Times in 62 Posts
Rep Power: 6
jameswilson29 is on a distinguished road
Good stuff.

No one is making the argument for reserve buoyancy in the ends and seakindly motion any more?

What do you think about the newer open transoms for oceangoing boats?

There have always seemed to be complaints about inadequate drainage in the traditional cockpit design, plus you eliminate the need for two more through-hulls that could fail.
Reply With Quote Share with Facebook
  #16  
Old 10-11-2011
grumpy old man
 
Join Date: Apr 2011
Posts: 3,651
Thanks: 1
Thanked 74 Times in 70 Posts
Rep Power: 4
bobperry will become famous soon enough
James:
Not sure overhangs have much to do with seakindly motion. In fact, most boats with long overhangs would have more hull rocker so they might be more inclined to hobbyhorse.

Boats with fat sterns have plenty of "reserve buoyancy" compared to pointed ended double enders.

Open transoms are the easiest to drain as you say.
Reply With Quote Share with Facebook
  #17  
Old 10-11-2011
smackdaddy's Avatar
Last Man Standing
 
Join Date: Aug 2008
Posts: 13,156
Thanks: 85
Thanked 81 Times in 75 Posts
Rep Power: 9
smackdaddy is a jewel in the rough smackdaddy is a jewel in the rough smackdaddy is a jewel in the rough
And here I've always thought "Tubercles" was the really strong surfer from Greek mythology.



Boy do I feel like an idiot.

Seriously, I'm really liking your blog, Bob. You're very good at this. Now you need to get some sponsors!
__________________

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


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

S/V Dawn Treader - 1989 Hunter Legend 40
Reply With Quote Share with Facebook
  #18  
Old 10-11-2011
grumpy old man
 
Join Date: Apr 2011
Posts: 3,651
Thanks: 1
Thanked 74 Times in 70 Posts
Rep Power: 4
bobperry will become famous soon enough
Smacker:
You were thinking of "Tubercules".

Very soon my blog will be attached to a site where I will be paid for hits. I can't give out the details yet. but it is happening.

I appreciate your kind words as ever. I'm having some fun with it and the traffic is quite good.

Still got the light on for you. You must have some reason to come to Seattle.
__________________
Please visit my blog. It's fun to read.


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

Bob's Blog ....

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


Please also visit my new web site
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #19  
Old 10-11-2011
Senior Member
 
Join Date: Jan 2001
Posts: 158
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 14
BigZ is on a distinguished road
These tubernuckle things only appear on the humpback whale. Just curious as to why, if they are desirable, they don't appear on other mammals of the seas. It appears that the humpback pectoral fins are much longer than other those on other whales, not sure if this has any impact. What do they allow the humpback to do that is different than other whales?
Or is it just that a long time ago some warty whales were ostracized from the herd and started their own group and now these warts really just serve some sort of sexual purpose, in which case they would be even more suitable for sailboats.
Reply With Quote Share with Facebook
  #20  
Old 10-11-2011
grumpy old man
 
Join Date: Apr 2011
Posts: 3,651
Thanks: 1
Thanked 74 Times in 70 Posts
Rep Power: 4
bobperry will become famous soon enough
Z;
Good question and I don't know the answer. Clearly the Orca has none. I'm not an expert on whale physiology so I wouldn't even try to guess why the Humpback has them. But if you pressed me I might say that it has to do with the amount of power the Humpback generates from the pec fins compared to the tail. The more power put into the pecs the more likely they would be to stall especially when swimming on the surface. When swimming deep I can't see them doing anything.

Yeah, that's it.

I did read the book FLUKE. So I got that going for me.

What I do know is that the designer who came up with them for ICON, Paul Bieker, is very smart. I pay attention to everything he does. A lot of people do. I also know the warts work on ICON according to the owner.

It's all fun.
__________________
Please visit my blog. It's fun to read.


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

Bob's Blog ....

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


Please also visit my new web site
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
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
New blog entry, including lots of pics and a BBQ pic for CD! labatt General Discussion (sailing related) 7 04-17-2009 09:14 PM
New blog entry - Charleston to Vero Beach labatt General Discussion (sailing related) 4 01-31-2009 11:55 PM
new/used Rudders Pearson 26 !! ruckus54 Gear & Maintenance 2 08-15-2008 08:19 PM
Skeg hung rudders sailaway21 Sailboat Design and Construction 88 04-01-2008 02:17 PM
Web site for used rudders randall2v Gear & Maintenance 1 10-08-2001 02:47 AM


All times are GMT -4. The time now is 02:17 AM.

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

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.