[Public-List] Casting Rudder Shoe and Gudgeons

[crufone at comcast.net]

Peter, 

Thanks for chiming in. My gudgeon is the single part style which I believe would be stronger but requires disassembly of all the rudder fastenings just to service the pintle/ gudgeon. So in having a casting made I quess that I would perfer to go with the two halves type gudgeon. I had asked earlier who the person was that wrote the entry on the A-30 web site. They pictured the two part gudgeon which looked in good enough shape to use as a pattern. 



Someone on this list a few years ago purchased a gudgeon set from a Port Townsend, WA foundry who had the pattern for the Pacific Seacraft Dana. The Dana part was close but not exaclty like the A-30 set. He then modified the Dana set to fit this A-30. If I remember the foundry charged a boatload for the casting. 



When making the pattern for the two part gudgeon it is very important to allow enough material aft of the bushing for the two fasteners which are directly adjacent to the bushing for ward of the "U" part which can fit either on the keel or the rudder. 



Please keep me on your want list. 

Michael Connolly #133 



----- Original Message -----


From: "Peter McEvoy" <peter.t.mcevoy at gmail.com> 
To: public-list at lists.alberg30.org 
Sent: Thursday, July 12, 2012 10:11:28 PM 
Subject: [Public-List] Casting Rudder Shoe and Gudgeons 

Hi Everybody, 

I'm the guy who works at the bronze foundry in San Francisco. I've been 
trying to keep track of everybody's info re: needs for rudder shoes and 
gudgeons for the sake of clarity. After trolling through the digests, here 
are the interested parties I have down (Add yours if you like): 

*Rudder Shoe*: 
Bill Ydel - wcydel at gmail.com 
Mike Lehman - sail_505 at hotmail.comJeff Fongemie - fongemie at gmail.com 
Brian Curry - brian_curry at hotmail.com 
David Mitchell - david at mitchellent.com 
Peter McEvoy - peter.t.mcevoy at gmail.com 

*Gudgeon Sets*: 
Glenn Brooks - brooks.glenn at comcast.net 
David Mitchell - david at mitchellent.com 
Michael #133 - crufone at comcast.net 
Peter McEvoy - peter.t.mcevoy at gmail.com 


My understanding is that Mike Lehman is getting a mold made of his rudder 
shoe this weekend, with potential to cast copies from the mold at a foundry 
in Baltimore- a great idea. I trust he'll keep us updated when ready. 

Now, I live in San Francisco and do bronze casting (and mold making) for a 
living and would also love to get my hands on an original, quality rudder 
shoe and gudgeon pair in order to make molds of them (Plans with 
dimensions, accurate diagrams or digital 3-d models work too!). Not trying 
to steal any casting opportunities or anything, it just never hurts to have 
your eggs in a few baskets instead of one. To Bill Ydel and Mike Lehman - 
let me know if/when your shoes are available and I'll make a "backup" copy 
for the west coast. 

Sounds like our current need is on the gudgeons. Critical dimensions, or a 
pair of originals, would be greatly appreciated. I can sculpt new gudgeons 
from scratch if somebody at least has some dimensions scribbled down 
somewhere. From there, a mold can be made and bronzes cast. I see on the 
site that the crappy-looking gudgeons (no offense!) from #231 give 
dimensions, but I'd like to base my measurements off of a cast set. 

A quick note regarding bronze alloys: All of the casting I have done has 
been for fine art, which typically casts using Everdur (astm alloy C-873), 
a type of silicon bronze. It is 95% copper, 4% Silicon, and 1% Manganese. 
It is has exceptional corrosion resistance and is excellent for marine 
hardware both above and below waterline. It would work perfectly for the 
rudder hardware and is likely to be the most common alloy you'll find 
around bronze foundries, in case any of you are scoping out places to have 
things cast. It should be compatible with most rudder stock material, such 
as Naval bronze. 

Let me know if you have any questions or suggestions! 

-Peter McEvoy 
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