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Post by sailingjj on Sept 28, 2014 3:40:37 GMT
Can anyone tell me exactly which type of bearings are fitted to a1999 so40?
I am in Greece and will need to get them before dropping the rudder.
Many thanks
Jj
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Post by sailbleu on Sept 30, 2014 5:21:31 GMT
We have an expert on this board for that , please check the hint&tips forum , there is a very good article on replacing the bearings.
Try to contact Ianqv , one of the moderators , he is the autor , maybe he can give some info on where and how to order the spare parts.
Regards
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ubuysa
Full Member
1995 - SO45.1 - Little Roundtop
Posts: 48
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Post by ubuysa on Sept 30, 2014 9:21:01 GMT
When we changed them on our SO45.1 (at the time we had the upper bearing frame replaced) the engineer (Crete, Greece) had the bearings made locally. They were machined from a material called Acetal and the engineer took our rudder away so they could be machined with the proper clearances.
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Post by ianqv on Oct 2, 2014 20:20:56 GMT
Hi Sailingjj Firstly welcome to the forum!! You will find detailed info here: www.jeanneau-owners.com/hintsandtips/rudderbearingreplacement.htmlFor clarity.... is your question, how to do the job? - in which case the above link will take you step by step all the way through. If you have any questions - fire away! If it is where to get the bearings from? - clarke and Carter - www.clarkeandcarter.co.uk/What are the standard / original bearings made from - I am 99% sure they are Delrin Delrin explanation from Wiki: Polyoxymethylene (POM), also known as acetal,[1] polyacetal and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction and excellent dimensional stability. As with many other synthetic polymers, it is produced by different chemical firms with slightly different formulas and sold variously by such names as Delrin, Celcon, Ramtal, Duracon and Hostaform. Typical applications for injection-molded POM include high performance engineering components such as small gear wheels, ball bearings, ski bindings, fasteners, knife handles, and lock systems. The material is widely used in the automotive and consumer electronics industry. Regards Ian |
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Post by ianqv on Oct 2, 2014 20:23:58 GMT
When we changed them on our SO45.1 (at the time we had the upper bearing frame replaced) the engineer (Crete, Greece) had the bearings made locally. They were machined from a material called Acetal and the engineer took our rudder away so they could be machined with the proper clearances. Oh wow - Jedi master Sailbleu called me an expert!!!! I'm going to print that off and frame it!!!  |
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Post by sailingjj on Oct 17, 2014 22:51:51 GMT
First, thank you everyone for your replies - very helpful indeed.
I have been traveling for a while and having to focus on other things. I have also been trying to find out what the engineer in the boatyard who offered to do the job was going to use. He wanted to make new bearings "of some material much better than white plastic" but did not know the name. I have since found out that it is Tufnol which is a resin/cloth material that has been out since the ark and is still used in many marine applications. The boat yard is in the Peloponnese and has been building Caiques for centuries.
I think he would have done a good job but I am not sure I want a custom job now that I know via Ian and Clarke and Carter, that I can buy the parts on line. Ian sent me a very helpful PM and I now have a price for the bearings from C and C.
The question is who to get to fit them and I guess that is down to me. The yard want a thousand Euros to do the work, not including the bearings. I suspect that is because the guy does not fancy climbing into the stern bilges. I don't either so we will see.
Anyway, thanks all again for your help.
jj
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