How do I measure for shaft length? - 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 > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 06-19-2008
Member
 
Join Date: Oct 2007
Location: Vancouver, Canada
Posts: 88
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
dhornsey is on a distinguished road
How do I measure for shaft length?

As the final stage of re-powering we're replacing our shaft and prop. I need to tell the machine shop how long to make the new shaft, but I'm not positive how to make this measurement.

The boat has a full keel with a stern hung rudder. Where should the propeller sit in the aperture? Right in the middle? Closer to the boat or the rudder? Our existing prop isn't a great guide as it's the folding type with a casing bolted right to the hull.

Any advice appreciated!! Thanks.
__________________
Pacific Seacraft Mariah 31
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 06-19-2008
Senior Member
 
Join Date: Dec 2003
Posts: 1,388
Thanks: 1
Thanked 18 Times in 17 Posts
Rep Power: 12
capttb is on a distinguished road
Not that it's much help but the diagram attached would seem to indicate the prop has to go pretty much as far forward as possible also.Pacific Seacraft Corp. - Pacific Seacraft 31
Attached Thumbnails
How do I measure for shaft length?-rudder_skeg.jpg  
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 06-19-2008
Wayne25's Avatar
Senior Member
 
Join Date: Jul 2006
Posts: 378
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
Wayne25 is on a distinguished road
On a powerboat inboard, if you have a 1" diameter shaft you should have about 3/4" between the prop hub and the skeg.
__________________
Wayne
Rehoboth Bay/Indian River, DE
S/Y KJ, Helms 25
1976 #552
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 06-20-2008
Senior Member
 
Join Date: Sep 2003
Posts: 268
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 12
sander06 is on a distinguished road
Leave enough space for a zinc and call it good.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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
Building a Rudder Newport 30 Armchairprotest Gear & Maintenance 5 04-07-2009 02:11 PM
Rule of thumb for mooring pennant length? jonlgauthier Gear & Maintenance 9 06-04-2007 11:32 AM
LWL v. Wave Length kreton General Discussion (sailing related) 1 10-08-2006 04:30 AM
Whisker Pole Length mikehoyt Racing 1 07-08-2004 09:18 AM
Displacement vs Length TADIAS General Discussion (sailing related) 5 12-16-2003 07:54 AM


All times are GMT -4. The time now is 08:22 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.