Return to Hobie.com
Hobie Forums
It is currently Thu Mar 28, 2024 6:55 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 10 posts ] 
Author Message
PostPosted: Sun Jul 08, 2007 7:54 pm 
Offline
Site Rank - Old Salt

Joined: Sat Jul 02, 2005 9:47 pm
Posts: 614
Location: San Diego
I broke another rudder pin today. Glad for that as Mission Bay is tame compared to Alameda (at least I hope Alameda has more wind and waves).

Has anyone moved to a better rudder pin than the stock supplied pin? I spoke to an engineer friend who suggested 17-4 PH stainless. Maybe move one size up? He said to have the new pin cut and drilled then heat hardened and that I would end up with titanium strength at a lower cost. Any other material engineer types have any other suggetions?


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jul 08, 2007 8:53 pm 
Offline
Site Rank - Old Salt

Joined: Sat Feb 24, 2007 8:45 pm
Posts: 1668
Location: Northfield Minnesota
What would the cost be over titanium? Its not a large quantity of material so while dramatic I can't imagine the cost being that substantial. I don't know what titnium machines like either, if its more difficult that might add some challenges/cost.


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jul 08, 2007 9:43 pm 
Offline
Site Rank - Old Salt

Joined: Sat Jul 02, 2005 9:47 pm
Posts: 614
Location: San Diego
Cost is not the primary concern here. He stated the the precipitation hardened stainless is easier to source and work with than titanium. I'm going down to the local airport machine shop tomorrow to check it all out. Then I need new bushings and may be gudgeons as the bushings went swimming and the gudgeons got tweeked. I guess I will be at Fast Lane Sailing tomorrow as well...


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jul 09, 2007 5:19 am 
Offline
Site Rank - Admiral

Joined: Thu Sep 21, 2006 4:54 pm
Posts: 230
Location: Seattle, Washington
I'm just curios, how did you break the rudder pins.

_________________
Mike Hensel
'86 Hobie 18, '93 Hobie 14, '80 Hobie 14(restso in progress)
Wind in your sails, water in your shoes, great day!


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jul 09, 2007 6:42 am 
Offline
Site Rank - Old Salt

Joined: Sat Jul 02, 2005 9:47 pm
Posts: 614
Location: San Diego
Just sailing. This is the third set I have broken. I sail a lot.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jul 09, 2007 8:05 am 
Offline
Site Rank - Captain

Joined: Mon Jul 02, 2007 11:21 am
Posts: 83
Location: USA
Sure it wasn't those EPO rudders? :wink:

_________________
HCANA Class Member


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jul 09, 2007 6:28 pm 
Offline
Site Rank - Old Salt

Joined: Sat Jul 02, 2005 9:47 pm
Posts: 614
Location: San Diego
No, this is the first pin broken on the new rudders, but the third on the current gut. :) I should have replaced the old pins with the new rudders.

I have a new set of pins and a few spares so I should be good for a while. The new ones are 316 stainless and another set of Monel K500 to be the more permanent set.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jul 09, 2007 9:45 pm 
Offline
Site Rank - Admiral

Joined: Thu Sep 21, 2006 4:54 pm
Posts: 230
Location: Seattle, Washington
I was wondering if the rudder pins are upgraded to a material that wont break and you hit something or the force gets to be too much,

What will be the next part to break?
Will something tear out of the transom?

It the rudder pin shearing saving you from more serious damage?

_________________
Mike Hensel
'86 Hobie 18, '93 Hobie 14, '80 Hobie 14(restso in progress)
Wind in your sails, water in your shoes, great day!


Top
 Profile  
 
 Post subject: Pin failure
PostPosted: Tue Jul 10, 2007 9:32 am 
Offline
Site Admin

Joined: Tue May 27, 2003 12:44 pm
Posts: 15026
Location: Oceanside, California
Hey Mike...

Sure that wasn't damaged when you smacked your head on the rudder when doing that hand stand a few weeks ago? :)

_________________
Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)


Top
 Profile  
 
 Post subject: rudder pins
PostPosted: Thu Jul 12, 2007 6:47 am 
Offline
Site Rank - Captain

Joined: Fri Jul 07, 2006 8:00 am
Posts: 52
Location: Northern VA
I have been using SS bolts from Boat US/West Marine for a long time; much cheaper than Hobie pins :-) Need to get the long bolts (5/16? x 3-4"); cut the thread off, and drill them for a retainer pin, so if you figure your time they may not be cheaper in the end. They DO seem to hold up better, though. I broke at least two pins; have yet to break a bolt. I suspect pins are failing due to fatigue limits and not overall strength. Sailing with the rudders up in shallow water and backing down in a blown tack when the rudders slam over hard seem to be the main culprit. Try to avoid both :-)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Jump to:  
© Hobie Cat Company. All rights reserved.
Powered by phpBB® Forum Software © phpBB Group