Damned rocks

[Erin]

Managed to miscalculate the tide just a tiny bit last Saturday on my way back from France, and clipped a rock on the entrance to my beach mooring/harbour. Guess if I'd not bought so much wine the boat may have been riding a little higher in the water and all would have been well. Photo shows the passage I have to take (and no, the tide wasn't quite that low when I tried to return )

However, the upshot is, I've burred the edge of one of the baldes (and probably left a groove in the granite). Is this likely to be enough to cause a balance issue or vibration. I'm presuming I should just lightly file the rough edge and go for a spin and see.

[chewy]

Doesn't look bad at all, a quick file would sort any sharp edges out. Use a file thats never been used on mild steel though.

[Mollers]

A decent prop shop could dress most of that out.

[codprawn]

Just file it.

That's one thing - we may have bigger tides than you but we don't have much rock!!!

[JSP]

Originally Posted by chewy

.... Use a file thats never been used on mild steel though.

Why is that?

[Bigmuz7]

Sometimes I'll take the prop off and lightly hammer the edges to restore the leading edges of the cup profile if its had a ding, which one blade looks to have had, before finishing with a file, but as said, it doesnt look too bad

[Erin]

Thanks guys. I'll gently take a file to it. I don't think the blade is twisted or damaged except for the burr on the edge. I was at tickover speed and as soon as it caught, the engine stalled.

[chewy]

Originally Posted by JSP

Why is that?

The mild steel will end up in the stainless steel and cause it to rust.

Someone I know did it on a stainless mast, used a wire brush to clean the surface up, the mast started to rust and said person denied all knowledge. Had to paint it in the end.

[Pablo]

The most dangerous thing at sea is land!

[chewy]

Originally Posted by Pablo

The most dangerous thing at sea is land!

Yep or things that should be on land rather than in the sea!

[kitten]

Originally Posted by chewy

Yep or things that should be on land rather than in the sea!

What like people?

[Mollers]

Originally Posted by Bigmuz7

Sometimes I'll take the prop off and lightly hammer the edges to restore the leading edges of the cup profile if its had a ding, which one blade looks to have had, before finishing with a file, but as said, it doesnt look too bad

How often are you clouting the prop?

[Bigmuz7]

Originally Posted by Mollers

How often are you clouting the prop?

Not that often thankfully .. but I like to have the blades as near perfect as possible and hate seeing imperfections in them .. it must be the yachtie coming out in me,... where i'll do anything to gain half a knot

[jyasaki]

Originally Posted by chewy

The mild steel will end up in the stainless steel and cause it to rust.

That will be cosmetic. It does not affect the stainless in any meaningful way.

It's caused by small pieces of mild steel on the file transferring to the stainless, where it discolors.

As an aside, most files will rust anyway, so you'll have some potential for the same staining, even with a new file.

jky

[alystra]

Originally Posted by jyasaki

That will be cosmetic. It does not affect the stainless in any meaningful way.

It's caused by small pieces of mild steel on the file transferring to the stainless, where it discolors.

As an aside, most files will rust anyway, so you'll have some potential for the same staining, even with a new file.

jky

Agreed. Also, the oxide film that stops stainless from rusting will only form properly on a highly polished surface, so unless you follow up the filing with ever finer grades of emery to polish it, the stainless steel will rust.

Your average wire brush will certainly put too many scratches on the steel for it to remain rust free, especially in a marine environment.

[martini]

Sorry to hear about your mishap Keith, bring your prop up to me if you want. I can clean up the edge and re-polish the whole thing, still got my mobile?


Matt

[Erin]

Kind offer, thanks very much (and yes I still have your number). I've filed the edge smooth without getting too carried away, so will see if it affects performance in any way. Had planned for a spin out tonight, but by the time I got home I had lost all enthusiasm. One hot day and suddenly total lethargy sets in! The garden and the barbecue won me over.

Fantastic vis this afternoon, could just make out the Brittany coastline due south when coming down Les Varines. That must be at least 35 miles.

[Bigmuz7]

Lucky b .. furthest vis I got was my neighbours next door tonight.. 20 yards Ah well thats Glasgow for ye .. maybe well get an Indian summer yet

[martini]

Originally Posted by Erin

Kind offer, thanks very much (and yes I still have your number). I've filed the edge smooth without getting too carried away, so will see if it affects performance in any way. Had planned for a spin out tonight, but by the time I got home I had lost all enthusiasm. One hot day and suddenly total lethargy sets in! The garden and the barbecue won me over.

Fantastic vis this afternoon, could just make out the Brittany coastline due south when coming down Les Varines. That must be at least 35 miles.

Yes I've noticed a few good days recently, normally I can see the light at Cap Frehal from my bedroom window but the other night I could also see houses and street lights etc. Last saturday was a public holiday in France, I was watching a firework display near Mont St Michel at the same time as another somewhere near Paimpol!

[Erin]

Originally Posted by Bigmuz7

.. maybe well get an Indian summer yet

Would that be the Indian Summer they've forecast for the last few years running?. About bloody time it turned up. 'spose they'll be right eventually if they say it often enough.

Originally Posted by martini

Yes I've noticed a few good days recently, normally I can see the light at Cap Frehal from my bedroom window

Yep, I can confirm that's visible from Grouville as well. Fl(2) 10s