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Nacra Crossbar Beam Failure #8770
07/15/02 10:00 AM
07/15/02 10:00 AM
Joined: Jun 2001
Posts: 74
Maryland, USA
PRagen Offline OP
journeyman
PRagen  Offline OP
journeyman

Joined: Jun 2001
Posts: 74
Maryland, USA


My Nacra 5.5 SL front crossbar just failed. One end of the dolphin striker pulled out of the beam. I should say it pulled through the beam. It created a good 1.5 by 4 inch hole in the beam where the backing plate in the beam holding the dolphin striker end came right out. The rod holding the mast then pushed part way through the beam, since the dolphin striker was no longer holding it, and bent the beam, but the mast stayed up.



I assume this was a corrosion problem, but I have never heard of this happening. Has anyone else seen this? I don't know how you could easily inspect for such a thing.



Does anyone have any spare Nacra 5.5SL front crossbars lying around? I thought not.







Patrick Ragen
Taipan 4.9 USA 274
-- Have You Seen This? --
Re: Nacra Crossbar Beam Failure [Re: PRagen] #8771
07/15/02 07:35 PM
07/15/02 07:35 PM
Joined: Jul 2001
Posts: 552
B
brobru Offline
addict
brobru  Offline
addict
B

Joined: Jul 2001
Posts: 552
..I have seen that happen down here......when you look at the size of the 'spacer',...the part inside the mast,....it looks REAL light duty.....it would be sensible to redesign a better 'spacer' to distrubute the load more over a given surface area....



What until you see the price of a new beam...



Bruce



St. Croix

Re: Nacra Crossbar Beam Failure [Re: PRagen] #8772
07/16/02 08:22 AM
07/16/02 08:22 AM
Joined: Jun 2001
Posts: 623
Gulf Coast
tami Offline
addict
tami  Offline
addict

Joined: Jun 2001
Posts: 623
Gulf Coast
If you don't mind doing some drilling and fabrication, it might be worth it to have a look at industrial aluminum supply houses for Al tubing, which is what the beam really is.



Dwyer Mast co. might also have Al extrusion



Good luck

tami

Re: Nacra Crossbar Beam Failure [Re: tami] #8773
07/16/02 09:11 AM
07/16/02 09:11 AM
Joined: Jun 2001
Posts: 292
Long Island, NY
Ed Norris Offline
enthusiast
Ed Norris  Offline
enthusiast

Joined: Jun 2001
Posts: 292
Long Island, NY
Hi, Tami,



Isn't the crossbar powdercoated or externally treated in any way?


Sail Fast, Ed Norris
Re: Nacra Crossbar Beam Failure [Re: Ed Norris] #8774
07/16/02 09:45 AM
07/16/02 09:45 AM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
Carpal Tunnel
Jake  Offline
Carpal Tunnel

Joined: Jun 2001
Posts: 12,310
South Carolina
Clear Anodized. Most anodizing shops will have facilities to anodize the 8'6" beam (just not a mast). The process isn't too expensive and I would estimate it would cost you anywhere from $30 to $75 for the anodizing. You can get this in colors too. (I wonder why no body ever does this).


Jake Kohl
Re: Nacra Crossbar Beam Failure [Re: PRagen] #8775
08/02/02 08:27 AM
08/02/02 08:27 AM
Joined: Jun 2002
Posts: 167
St Croix Virgin Islands
vicatman Offline
member
vicatman  Offline
member

Joined: Jun 2002
Posts: 167
St Croix Virgin Islands
the same thing happened to my TheMightyHobie18...the rod broke then the main beam broke...twisted the rear beam and it broke.. buddy of mine was on it...fortunately there was a guy in a powerboat that saw what happened and pulled him ashore....I got two used beams from a guy in Texas for $200 bucks...not bad..priced some used ones in FL for $225 a piece.....

Re: Nacra Crossbar Beam Failure [Re: PRagen] #8776
08/02/02 04:33 PM
08/02/02 04:33 PM
Joined: May 2002
Posts: 217
J
jcasto1 Offline
enthusiast
jcasto1  Offline
enthusiast
J

Joined: May 2002
Posts: 217
I have a N5.0 port hull with two crossbeams.

Take it off my hands, please!


Jim Casto
NACRA 5.5 & NACRA 5.7
Austin TX
Lake Travis
Re: 5.0 port hull - Symetrical or no?? [Re: jcasto1] #8777
08/04/02 05:51 PM
08/04/02 05:51 PM
Joined: Jun 2001
Posts: 292
Long Island, NY
Ed Norris Offline
enthusiast
Ed Norris  Offline
enthusiast

Joined: Jun 2001
Posts: 292
Long Island, NY
DID you say 5.0!!! I'm looking for a late model (mine's a 95) starboard hull - - - does anybody know if they're interchangeable??


Sail Fast, Ed Norris

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