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Rudder Construction

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AndersOtt View Drop Down
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    Posted: 03 August 2021 at 23:45
Hi All, I just had a survey done on a 430e. It has a new (2 years) factory make rudder installed as the old one snapped the tip off in mud.

When the surveyer presented me with thermal imaging and the inner construction is clear. However, the rudder sounds very hollow. Are these rudders foam cored?

Also, even when tapping the rudder stock, there seems to be areas where there is not 100% contact between the fiber glas and the stainless stock in a couple of areas. 

Has anyone experienced anything like this? 

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Wayne's World View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 03 August 2021 at 23:59
AndersOtt,

The rudders are made by Jefa - Denmark www.jefa.dk the rudder shafts are aluminum. The rudders are not made by Hanse.   
Wayne W
Cruising, currently in the Caribbean and will head across the Pacific late 2023
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AndersOtt View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AndersOtt Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2021 at 01:57
Thanks Wayne,

I understood that the steering was Jefa not the rudders. Thanks for explaining!

BTW crossed the pacific in 19. Amazing.

Anders
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Wayne's World View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2021 at 02:27
Anders,

Happy to help. I have always found Jefa to be very helpful. Still looking at starting our trip across the Pacific probably in 2023. 
Wayne W
Cruising, currently in the Caribbean and will head across the Pacific late 2023
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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: 04 August 2021 at 07:52
Not sure about the larger models but back in 2003 the rudders were made by a , now deceased, polish company. To put it bluntly-- were rubbishCry
Here is mine that split in 2 halves after a very light grounding



Edited by samuel - 04 August 2021 at 07:53
Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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iemand View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iemand Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2021 at 14:23
as far as I know the rudder stocks always came from JEFA.
Hanse 312 MJ 2004 - Hanse 370e MJ 2007
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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: 04 August 2021 at 16:02
Originally posted by iemand iemand wrote:

As far as I know the rudder stocks always came from JEFA.

Way back in the long distant past there is a series of threads on this forum about bad rudders from the polish company. It is a good chance that your 2004 hanse 312 might also have had a polish one. Hanse did not change immediately problems arose. Jefra's construction is much different to the one shown in the picture.


Edited by samuel - 04 August 2021 at 16:06
Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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AndersOtt View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AndersOtt Quote  Post ReplyReply Direct Link To This Post Posted: 05 August 2021 at 15:01
Thanks all,

Heard back from Jefa. The alu stock is laid up in the port half, similar to what Samuel show here, so essentially you could imagine the same split as you show here. The voids that we have identified are for sure a concern as i will likely bring the boat noth for a winter or two at one point. 

Any frost split rudders here?

Anders
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