Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Design > Boat Design
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-10-2009, 01:41 AM
pistnbroke's Avatar
pistnbroke pistnbroke is offline
I try
 
Join Date: Jan 2009
Rep: 387 Posts: 1,269
Location: Noosa.Australia where god kissed the earth.
Forward Rudder steering ...what do you know?

Still working on convertine my $120 jetski possibly into a prop driven inboard ...it would be so easy to put a shaft thro the hull to a forward rudder with jetski style handle bars on the top ...any one done this ..I assume it woud be sensitive and only need a small blade ...the notski is 2.7m long and weighs 100kg dry.
Reply With Quote
  #2  
Old 02-10-2009, 05:12 AM
Guest625101138 Guest625101138 is offline
Previous Member
 
Join Date: Jan 2007
Rep: 0 Posts: 0
Quote:
Originally Posted by pistnbroke View Post
Still working on convertine my $120 jetski possibly into a prop driven inboard ...it would be so easy to put a shaft thro the hull to a forward rudder with jetski style handle bars on the top ...any one done this ..I assume it woud be sensitive and only need a small blade ...the notski is 2.7m long and weighs 100kg dry.
Bad idea. A forward mounted rudder will cause roll out in a turn. Just think about it.

Consider turning to starboard. The bow of the jetski moves to starboard by the force on the rudder. The CofG wants to keep going straight. CoG is much higher than the force applied to the rudder. Boat rolls to port. This is roll away from the turn with tendency toward complete roll. Tolerable at low speed possibly but not a nice feeling.

The stern mounted rudder works the opposite way causing roll into the turn. This is much better and the only way to do it if you are doing any speed.

Rick W
Reply With Quote
  #3  
Old 02-10-2009, 05:25 AM
pistnbroke's Avatar
pistnbroke pistnbroke is offline
I try
 
Join Date: Jan 2009
Rep: 387 Posts: 1,269
Location: Noosa.Australia where god kissed the earth.
well thanks for that //for $120 I have had more brain ace than the price demands ~!!!!! thanks for your advice !!!!
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Forward Looking Sonar Pericles OnBoard Electronics & Controls 3 12-17-2007 10:24 PM
'90 Supra Comp Rudder/Steering question supra001 Powerboats 0 07-02-2007 03:26 PM
forward rudder hydroplanes moTthediesel Boat Design 7 09-07-2006 11:49 PM
Forward props Akeswins Props 8 06-10-2005 09:48 PM
Steering nozzle vs. rudder Skylark Boat Design 3 06-14-2003 11:00 PM


All times are GMT -5. The time now is 08:11 PM.


Powered by: vBulletin Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2012 Boat Design Net