Prop info ... - 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
  #1  
Old 10-11-2002
Junior Member
 
Join Date: Oct 2002
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Joe Fox is on a distinguished road
Prop info ...

I have an Irwin 31'' sloop with a 15 hp Yanmar engine. The boat has a 2 blade prop, 13 x 13 x 7/8, 3200 rpm @ 6.5 k. I would like info for a 3 bladed prop to increase the speed and performance.
Reply With Quote Share with Facebook
  #2  
Old 10-11-2002
Senior Nappy Headed Ho
 
Join Date: Feb 2001
Posts: 734
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Denr is an unknown quantity at this point
Prop info ...

To increase speed and performance I would suggest a new full battened main (5-7 oz. material) and perhaps a tri-radial 150% genoa; personally, I like the products from North.
Reply With Quote Share with Facebook
  #3  
Old 10-11-2002
paulk's Avatar
Senior Member
 
Join Date: Jun 2000
Location: CT/ Long Island Sound
Posts: 2,533
Thanks: 4
Thanked 20 Times in 19 Posts
Rep Power: 15
paulk is on a distinguished road
Prop info ...

6.5 knots sounds pretty quick for a 15hp engine on a heavy 31 foot boat. Changing to a 3-bladed prop might add a little speed under power, and it might not; the engine is only so powerful and the boat''s weight isn''t being reduced. The three blades could easily cut sailing speed by half a knot in all conditions. For water-skiing, you''ll need a different boat.
Reply With Quote Share with Facebook
  #4  
Old 10-12-2002
Senior Member
 
Join Date: May 2002
Posts: 275
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
windship has a little shameless behaviour in the past
Prop info ...

First of all, I agree with Denr''s point.If six and a half knots isn''t enough, get a power boat.
I don''t think your going to do any better.A three blade prop will not give you more speed, but it will move the boat better through wind, seas and currant.Personaly, I think that with a fifteen horse engine and a displacement of nine thousand three hundred,(which is light for a thirty-one footer and IS the reason your getting six and a half)your lucky to be getting the six and a half

Dennis
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
Zincs for Sail Prop feathering prop jrbarn Gear & Maintenance 4 09-20-2006 10:40 AM
how to remove folding prop? mcagney Gear & Maintenance 1 07-20-2005 10:23 AM
Prop for Pearson 35 gbeardmore General Discussion (sailing related) 2 05-27-2001 12:08 PM
Prop for Atomic 4 gbeardmore Gear & Maintenance 0 05-03-2001 01:15 PM
Prop for Pearson 35 gbeardmore Gear & Maintenance 0 04-24-2001 12:49 PM


All times are GMT -4. The time now is 03:16 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

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.