Go Back  Offshoreonly.com > Technical > General Q & A
blueprinting a hull >

blueprinting a hull

Notices

blueprinting a hull

Thread Tools
 
Old 11-29-2007, 06:59 PM
  #1  
Registered
Thread Starter
 
Join Date: Feb 2005
Location: Atlanta
Posts: 1,897
Likes: 0
Received 123 Likes on 56 Posts
Default blueprinting a hull

When a hull is "blue printed" or straighted , hook removed. etc etc., How much of the hull is dealt with?
In reguards to a non step V
tomcei is offline  
Old 11-29-2007, 08:42 PM
  #2  
Registered
 
Join Date: Oct 2004
Location: franklin,Tenn.
Posts: 161
Likes: 0
Received 0 Likes on 0 Posts
Default

depends on length of boat,usually about the last eight feet is the most looked at.
scarrab30 is offline  
Old 11-29-2007, 09:18 PM
  #3  
Charter Member #601
Charter Member
 
Mr Gadgets's Avatar
 
Join Date: Dec 2000
Location: Holland, Mi USA.
Posts: 3,276
Received 4 Likes on 3 Posts
Default

Pick a point, say the 8' forward of the transom on the keel. Now draw a line back to each corner of the transom. This will form a V. That area needs to be flat, and symetrical from side to side. Unless there are characteristics that need to be in the hull to correct some handling problems..
Make sense?

Hope it helps..
Dick
Mr Gadgets is offline  
Old 11-30-2007, 06:02 AM
  #4  
Registered
Thread Starter
 
Join Date: Feb 2005
Location: Atlanta
Posts: 1,897
Likes: 0
Received 123 Likes on 56 Posts
Default

thanks, that makes perfect sense.
tomcei is offline  
Old 11-30-2007, 08:08 PM
  #5  
Registered
Thread Starter
 
Join Date: Feb 2005
Location: Atlanta
Posts: 1,897
Likes: 0
Received 123 Likes on 56 Posts
Default

Keep'n up w/ the jones's
tomcei is offline  
Old 12-01-2007, 01:09 AM
  #6  
Registered
 
Rebel_Heart's Avatar
 
Join Date: Feb 2004
Location: LOTO
Posts: 1,173
Likes: 0
Received 0 Likes on 0 Posts
Default

What are people finding in speed after blue printing? Going to have my hull done in the spring.
Rebel_Heart is offline  
Old 12-01-2007, 03:33 AM
  #7  
Charter Member # 55
Charter Member
 
Griff's Avatar
 
Join Date: Oct 2000
Location: Omaha/LOTO
Posts: 19,555
Received 1,816 Likes on 904 Posts
Default

Originally Posted by Rebel_Heart
What are people finding in speed after blue printing? Going to have my hull done in the spring.

From what I have read, it really depends on what you start with. I have read from 2-10mph depending on the hull. You would probably be looking at something on the lower end of that since your hull should be pretty good to start with.
Griff is offline  
Old 12-03-2007, 12:55 PM
  #8  
Registered
 
Join Date: Jun 2007
Posts: 454
Likes: 0
Received 0 Likes on 0 Posts
Default

Get a eight foot straight edge go from the transom forward f the triangle Idea, just straighten everything, real blueprinting will do the entire hull, never know when there is a hump.
excalibur32 is offline  
Old 12-03-2007, 02:08 PM
  #9  
Charter Member #601
Charter Member
 
Mr Gadgets's Avatar
 
Join Date: Dec 2000
Location: Holland, Mi USA.
Posts: 3,276
Received 4 Likes on 3 Posts
Default

I took the hook out of my 251 Checkmate and it created a handling problem. I found that hull needed a bit of hook to keep it airborne properly. I ended up putting some wedges in the hull further out from the center. That cured the problem, but added another. I couldnt free the hull up with the wedges. So I rebuilt and mounted my trim tabs to add hook to the bottom when running in rough water and pull them up when I was in calm water for max top end. Worked fine for many years. I could run 75mph in 3-5" water on Lake Michigan.. the washmachine type water..
So depending on how long your boat is.. will depend on how far forward you need to clean it up. But being symetrical from side to side is important also. Razor sharp edges and then a slight scuffed surface is suppose to be the fastest.. So I am told

Dick
Mr Gadgets is offline  
Old 12-03-2007, 02:15 PM
  #10  
Registered
 
Join Date: Jun 2007
Posts: 454
Likes: 0
Received 0 Likes on 0 Posts
Default

Correct, scuffing helps to airiate the hull.
excalibur32 is offline  


Quick Reply: blueprinting a hull


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.