A suggestion for those of you having a Mahe with a winch on the mast
: Inspect it!
winch is mounted on an aluminium support which is rivited to the mast
. The bronze winch is bolted to the aluminium support with stainless steel
I removed the winch for greasing. The bolts were very tight. After removing the nuts I still had to use an impact driver to get them out.
There was extreme oxydation between the winch and the aluminium support. Also the bolts were solid in aluminium oxyde. There is serious pitting in the surface of the aluminium support. Gap corrosion
between the aluminium and the bronze.
And our boat has been in the water
for half a year....
I will mount a non-conducting gasket
between the aluminium support and the winch, e.g. a one mm nylon or plastic sheet. And kit it on both sides with silicone kit. I am considering whether it is necessary to electrically isolate the 6 mm bolts from the aluminium support. Any ideas?
My suggestion is of course for the others to do the same inspection
; I am glad I did not wait a year; the corrosion
would have been worse.
There are maybe not so may spi's and gennakers out there; we had only the second spifurl, after Kev & Jo from Invincible. See attached picture!
Probably there are some more gennakers.