Nacra rudder repair and upgrade :: Catamaran Sailboats at TheBeachcats.com

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Nacra rudder repair and upgrade

Andinista

Rank: Mate

Registered: Aug 18, 2003

Last visit: Dec 13, 2023

Posts: 880
Posted: Oct 12, 2021 - 06:58 PM

I thought to share a couple ideas:

I did this repair a few years ago, thinking it might save the weekend or perhaps the season. It's still solid and as I haven't found a cheap enough casting to justify replacing it so far

This weeked I tested this prototype to replace the pin with rings, with just bolts and nuts. the locking plate is for Laser. It worked perfectly. I guess the threads might damage the rudder casting on the long term, so I ordered the newer gudgeons from Murrays, I hope they fit. Much much easier and quicker, especially with the boat on the ground. (I could do it Just for one rudder so far though. It won't work on the repaired one above.)

Edited by Andinista on Oct 12, 2021 - 07:02 PM.
Edchris177

Rank: Chief

Registered: Nov 26, 2009

Last visit: Aug 10, 2024

Posts: 2531
Posted: Oct 13, 2021 - 08:46 PM

That little tang is exactly what is used in the Dart cats. Makes rudder removal a 3 second job.

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Hobie 18 Magnum
Dart 15
Mystere 6.0XL Sold Was a handful solo
Nacra 5.7
Nacra 5.0
Bombardier Invitation (Now officially DEAD)
Various other Dock cluttering WaterCrap
--
P.M.

Rank: Mate

Registered: Jan 14, 2004

Last visit: Sep 25, 2024

Posts: 866
Posted: Oct 13, 2021 - 09:45 PM

Edchris177That little tang is exactly what is used in the Dart cats. Makes rudder removal a 3 second job.

. . . and it's what's on all the modern Nacras for the last 2+ decades.

--
Philip
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texastuma

Rank: Mate

Registered: Nov 22, 2012

Last visit: Nov 20, 2024

Posts: 410
Posted: Oct 14, 2021 - 10:05 AM

AndinistaI thought to share a couple ideas:

I did this repair a few years ago, thinking it might save the weekend or perhaps the season. It's still solid and as I haven't found a cheap enough casting to justify replacing it so far

This weeked I tested this prototype to replace the pin with rings, with just bolts and nuts. the locking plate is for Laser. It worked perfectly. I guess the threads might damage the rudder casting on the long term, so I ordered the newer gudgeons from Murrays, I hope they fit. Much much easier and quicker, especially with the boat on the ground. (I could do it Just for one rudder so far though. It won't work on the repaired one above.)

Edited by Andinista on Oct 12, 2021 - 07:02 PM.

Amazing enough, I had never broken a Nacra casting. Look at using the Prindle 2" gudgeons.. It may push it out enough.

--
Scott

Prindle Fleet 2
TCDYC

Prindle 18-2 Mod "FrankenKitty"
Tornado Classic "Fast Furniture"
Prindle 19 "Mr. Wiggly"
Nacra 5.8 "De ja vu"
Nacra 5.0
Nacra 5.8
Tornadoes (Reg White)
--
Andinista

Rank: Mate

Registered: Aug 18, 2003

Last visit: Dec 13, 2023

Posts: 880
Posted: Oct 14, 2021 - 11:55 AM

QuoteAmazing enough, I had never broken a Nacra casting. Look at using the Prindle 2" gudgeons.. It may push it out enough.

I preferred to reuse the existing holes on the transom, the newer Nacra gudgeons are supposedly compatible with legacy Nacras, so I hope they will fit. Not sure what would be the benefit of pushing them out, they work fine like that.
Edchris177

Rank: Chief

Registered: Nov 26, 2009

Last visit: Aug 10, 2024

Posts: 2531
Posted: Oct 15, 2021 - 02:24 AM

Quote
. . . and it's what's on all the modern Nacras for the last 2+ decades.

Unfortunately my Nacras are ‘84 & ‘88 vintage.

--
Hobie 18 Magnum
Dart 15
Mystere 6.0XL Sold Was a handful solo
Nacra 5.7
Nacra 5.0
Bombardier Invitation (Now officially DEAD)
Various other Dock cluttering WaterCrap
--