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Damask rudder

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Jojo View Drop Down
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Joined: 03 August 2022
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    Posted: 03 August 2022 at 20:57
Hi I am the new owner of a 342 
I am new to this forum 
Former Dufour owner, hope to be a part of this forum from now on 
The damask on the rudder is broken 
If someone now were to obtain this part
It’s the damask on the ruder tunnel 

Kind regards jonas straka


Edited by Jojo - 03 August 2022 at 21:03
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Johan Hackman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Johan Hackman Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2022 at 15:23
The Danish company Jefa sells them: https://jefa.dk/products/sealing-systems/. They have one version that you glue yourself so you don't have to lower the rudder.

I replaced my original rudder with a rudder from Jefa at the beginning of this summer and have not yet fitted a new gaiter. I think Jefa's gaiter is too expensive so I will get some neoprane and make one myself.

I would say the main reason for having a gaitor in the 342 is to stop dirt from getting to the lower bearing so I am not worried to sail without it for a while.

Johan

PS. Welcome to the forume by the way! The 342 is a great boat.






Edited by Johan Hackman - 04 August 2022 at 15:25
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Johan Hackman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Johan Hackman Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2022 at 15:57
I actually got a quote from Jefa for a gaiter shipped to Sweden - EUR 139.

Johan
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Jojo View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jojo Quote  Post ReplyReply Direct Link To This Post Posted: 10 August 2022 at 16:58
thanks for your help 
Regards jonas
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Johan Hackman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Johan Hackman Quote  Post ReplyReply Direct Link To This Post Posted: 10 August 2022 at 17:32
Let us know how you go about. It would be interesting for me to know as I haven't yet got around to fix it on my boat.

Johan
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Jojo View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jojo Quote  Post ReplyReply Direct Link To This Post Posted: 12 August 2022 at 07:46
my solution was to purchase a EPDM rubber and glue it together in a 15mm overlapping 
This rubber has the ability to take all the stress from movement and still holding it water tight    
I fill in after the long term test

Best of all it’s a 20 dollar fix glue and all 
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Johan Hackman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Johan Hackman Quote  Post ReplyReply Direct Link To This Post Posted: 14 September 2022 at 08:08
I turns out that finding the right material for the job is a bit of a problem. I simply cannot find any fitting neoprene of EPDM sheets. I guess there will be more suitable materials around as the main purpuse of the gaiter must be to prevent dirt to get into the rudder tube and to the lower bearing.

Other than that I am having fun learning how to make a flat picture of what is essentially a cone with the top cut off. I believe that I am getting the trigonometry and the calculations of corda right. I remember the "physics debates" that popped up every now and then in this forum - maybe we should try a mathematical one?

Johan
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samuel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samuel Quote  Post ReplyReply Direct Link To This Post Posted: 14 September 2022 at 09:58
My rudder was replaced in 2014. The installer used the material for reparing inflatable bouncy castles. They just placed the piece around the shaft & GRP, Cut it to shape then glued the overlap with the glue supplied by the bouncy castle people. It is still working perfectly.It has a jubille clip to the shaft & one to the GRP part. From memory they fitted the rudder then cut & glued the seal in place. They clamped the cloth, Cut it correctly then released it. The chap who did it was able to apply the glue, push the 2 parts of the joint against the shaft to maintain pressureon on the glue for a couple of minutes then when set it formed a cone which  he slid it down over the GRP & clamped in place leaving slack between the shaft fixing & the GRP clamp so the rudder could turn OK
I would imagine that there would be at least one company in most sailors areas that operate bouncy castles & the like. They must have spare cloth in stock to deal with emergency punctures . A visit to one of them would soon get a piece along with the adhesive which must be a fast operating one as they do not want punctures to cause down time when operating the units on site.


Edited by samuel - 14 September 2022 at 10:01
Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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Johan Hackman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Johan Hackman Quote  Post ReplyReply Direct Link To This Post Posted: 16 September 2022 at 08:40
That's a very useful description of the procedure and a good advice for finding a material, Samuel. I will look for inflatable castles now.

Johan
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Borjebus Quote  Post ReplyReply Direct Link To This Post Posted: 16 September 2022 at 10:51
I would simply use a bit of synthetic fabric and fasten on the shaft with a cable tie, and let the fabric hang over the tunnel.
Why? Because I pour water with detergent into the tunnel twice a year to get rid of barnacles. They are nasty for the lower bearing!

Edited by Borjebus - 11 October 2022 at 10:54
BÄSK, Hanse 370e #82 from 2006, Yanmar 3JH4E/SD50, 3-blade Flexofold, RMC(Lewmar) 185 Bowthruster, Vulcan 9, Simrad+B&G instruments
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