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Hanse 400 - draft

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Ratbasher View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ratbasher Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2023 at 18:02
Hi John - thank you; I guess I was just getting confused with conflicting literature and the never-ending saga of an 8-month refit. And age, probably....  'Providence', our H400 neighbour is back in the water following her rudder replacement too; not sure if it's bonded or not but they always hang an anode off the back end when alongside as a precaution.  The main issue with mine was not stock corrosion, although it was certainly there, but rot within the rudder itself; you may have read my earlier post about the lessons from the refit.

Very pleased to report that the new rudder & re-aligned keel have been performing superbly.  We're now at Falmouth en route for Ireland and the boat's often been surfing above hull-speed under perfect control in the recent F5/6 easterlies.

Will look forward to meeting you perhaps when we get back towards end-September.  All the best!

Iain
H400 (2008) 'Wight Leopard' now hibernating Gosport UK until April
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DJgun View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DJgun Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2023 at 10:13
Originally posted by Mark_J1 Mark_J1 wrote:

Yes, on the 400 the Jefa bearings are acetal or delrin. Not sure what the carrier ‘ball’ is but definitely polymer. However the bearing ball sits in an aluminium socket. I’ve never seen mention of bonding/not bonding that. I’ve regreased as per Jefa instructions. On a 400e it sits just above waterline when stationary which likely helps keep it out of harms way :)

If you ever need to order a bottom bearing, I discovered there are 3 potential sizes. So you really need to get it out of the hull and measure before ordering. Jefa we’re really helpful. 

Mark

Hi Mark,
The 'cup' on the lower bearing for Hanse 200 Jefa rudder is also a polymer, definitely not aluminium.

Last year I fitted a new Jefa rudder, the standard long version, to replace the short rudder previously fitted which was in poor condition. I also replaced the lower bearing at the same time. The old bearing was very contaminated with small shell growth. The outer bearing shell "cup"  cannot be easily replaced as it is bonded into the main fibreglass tube. 

It was interesting that this 400e has standard 2m draft lead-iron keel, but short rudder. The difference in strong breeze performance with the linger standard rudder is significant and welcomed.

Cheers, DJ


Edited by DJgun - 30 October 2023 at 10:14
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Mark_J1 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark_J1 Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2023 at 14:12
DJgun - you may well be right.  However spec’s change at Jefa often so it’s worth folks checking what they have. The cup for the lower bearing on mine (late 2005 build/2006 spec) was ‘almost’ certainly black anodised Aluminium alloy. Judged from a hammer tap test. Similar Jefa setup on a more modern Bavaria next to me in the yard at the time was definitely Aluminium & it was clear to the naked eye that it was suffering galvanic corrosion (visible as it is physically sticking out of the hull around the lower limit). I think it was Ratbasher that rightly said in mentioning Jefa’s quality challenge (para-phrasing!) “each of the boats is in a unique environment” :). Probably need to add “ & each boat is a unique spec!”

Mark


Hanse 400e "Grey Goose" Hull #31
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DJgun View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DJgun Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2023 at 18:31
Hi Mark,
I guess I'm lucky on this particular issue to have a 2007 build 400e. I agree that there seems to be a lot of variability in the Hanse boats of that era, and plenty of poor build practices and details even if the hull design was nominally strong.

I spend an inordinate amount of time reparing problems of every conceivable nature, and try to ensure it is done properly. This forum is a treasure trove of ideas and information in that connection for which I am incredibly grateful. Hopefully the next owner of Hula will have a much easier ownership experience.
DJ Sailor Ordinaire
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