[Public-List] Rudder Construction

[George Dinwiddie]

John,

Given what I found in Calypso (#543) I'm guessing your rudder core is 
made of syntactic foam.  The two sides of the rudder were laid up in 
molds. One side was glassed to the pins coming out of the rudder post, 
and then the gap was filled with foamed resin.

Check http://alberg30.org/maintenance/Steering/RudderVarieties/ and the 
message archives 
http://lists.alberg30.org/pipermail/public-list-alberg30.org/ as this 
topic has been discussed in depth.

  - George

JIRVING104 at aol.com wrote:
> I'm stripping 30 years of bottom paint off Scotch Bonnet (#634).  The  
> rudder has some large star bursts.  They are about 6" in diameter, and  don't 
> appear to go below the gel coat.  Any suggestions on what I should do  to 
> repair?  The rudder construction (1979) seems to have a core  construction based 
> on looking at the trailing edge with the paint removed, but  I'd appreciate 
> any input on what the core is made of.  I'm guessing the  core is solid 
> glass. 
> John Irving

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