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Gori Prop rebuild????????? |
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Jon167 
Skipper 
Joined: 14 April 2011 Location: Webster NY Status: Offline Points: 95 |
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 Topic: Gori Prop rebuild?????????Posted: 23 October 2011 at 11:10am |
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Ok I have read through the posts about rebuilding the rubber isolation damper with epoxy and I am not interested in that route. Anyone have other suggestions?
Anyone send it for repair? How much did that cost? Anyone ever work with a curable Urethane or rubber before?
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Bill Layton
Commodore 
Joined: 15 September 2002 Location: Canada Status: Offline Points: 551 |
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Posted: 23 October 2011 at 11:47am |
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Gori won't repair old props any longer. They re-designed the inner core and hub so that they are star shaped and captive to each other... so if the rubber fails the core won't slip. This means that the rubber can no longer shear and it now acts more like an isolator (the original intention) This re-design happened in approx 1999. Since then I haven't seen or heard of the new design failing.
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Jon167
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Joined: 14 April 2011 Location: Webster NY Status: Offline Points: 95 |
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Posted: 23 October 2011 at 12:10pm |
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that sounds like a fantastic solution. are there any after market sleeves for the inerts?
I understand the dampening isolation but why is there a emphases on the conductivity?
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Bill Layton
Commodore
Joined: 15 September 2002 Location: Canada Status: Offline Points: 551 |
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Posted: 23 October 2011 at 12:57pm |
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The insert is what we refer to as the core.... that fits into the hub, both have the star shape, but the core star is opposite to the hub star, so that the star shapes fit together to form one. So the core/insert is only half of the solution. Conductivity is the whole reason for the rubber lining. All saildrive propellers are designed to be electrically isolated from the propeller shaft of the sail drive, because of the dissimilar metals that get submerged in a conductive solution (salt water). The rubber isolates the largest mass of the bronze prop from the other metals surrounding it.
Edited by Bill Layton - 23 October 2011 at 12:59pm |
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Bill Layton
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Joined: 15 September 2002 Location: Canada Status: Offline Points: 551 |
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Posted: 23 October 2011 at 1:12pm |
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This is a cut and paste from Gluguru.com I wonder if you could find a small quantity?
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Jon167
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Joined: 14 April 2011 Location: Webster NY Status: Offline Points: 95 |
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Posted: 24 October 2011 at 12:16pm |
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Jon167
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Joined: 14 April 2011 Location: Webster NY Status: Offline Points: 95 |
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Posted: 24 October 2011 at 1:38pm |
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https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/295960_2464594023092_1499517521_32628931_384051695_n.jpg
if it's any help for anyone I have successfully removed all the rubber from the prop with a 2" hole saw. what I found was a phenolic centering washer for the outboard end of the inner hub, not sure what they used on the inboard end. From the looks of things the rubber seems to hold up reasonably well, can't really ask for more than 25yrs. now the question? not knowing much about rubber, how the hell is this process done?
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Jon167
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Posted: 24 October 2011 at 8:32pm |
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