Author Topic: Infos contest 40s  (Read 1047 times)

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Infos contest 40s
« on: 24 May, 2011, 23:04:42 »
Dear all, I am the owner of a fantastic Contest 40 built in 1970. Surely the nicest boat ever seen!! Actually my farther fell in love with it in the 2009. That was supposed to be his retirment toy. Unfortunatelly he didn't have the time to enjoy it because he died few months later.
In the last two years I have tried to solve some problems related mostly to the age of the boat and I had the chance to appreciate how well it has been built. However I would have great advantage to have some technical documentations suchmas sails plan, Hull drawings etc, whatsoever. In particular I would need to know how was realized the junction between the two halves of the main mast. i would be extremely gratefull if anyone could help me in the quest! Please contact me.

Best regards!

Offline BJ

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Re: Infos contest 40s
« Reply #1 on: 25 May, 2011, 08:54:17 »
Indeed the early model of the Contest 40 is a beautiful boat, a design by Uus van Essen. They are also quite rare, only 12 of them were built between 1970 and 1973, and there is very litte documentation. The only thing that the Club has is a scan of an old brochure .
I'm not sure about the mast though, is it still the original or has it been replaced in the past?  If you can provide me with the hullnumber it is perhaps possible to trace back the exact year of build and the original owner. Not helpfull in any technical way but just nice to know  ;)


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Re: Infos contest 40s
« Reply #2 on: 25 May, 2011, 19:02:18 »
Dear BJ,

thank's for the information. I am pretty sure the mast is original. It is composed by two elements jointed together at the level of the cross-tree. Obviously at the cross-tree there is a outer steel shaft where the lower shrouds are attached. Just above the shaft I have noticed a 3-4 cm bulge of the aluminum with a crack on top. Now, it seems to be due to an oxidative process coming from the inner part of the mast. A friend of mine suggested me to disassemble the two halves of the mast to check whether the inner junction was made of steel (this would explain the inner oxidation) or of aluminum (in this case the oxidation whould be due to a galvanic current generated by the near steel shaft). Since, in contrast to modern masts there are very few screws or rivets close to the junction which are necessary for a junction to hold, I was wondering whether in the case of this mast something particular was originally made. To disassemble a 40 years old mast is not something that makes me feel comfortable with, the crack seems to be stable, if the inner joint was made of aluminum I would not touch it.

let me know what u think about