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Corroded mast #271542
04/18/14 03:33 AM
04/18/14 03:33 AM
Joined: Aug 2011
Posts: 182
Grafton, NSW
Greg/Debra Offline OP
member
Greg/Debra  Offline OP
member

Joined: Aug 2011
Posts: 182
Grafton, NSW
Hi all,

I just took off my diamond spreaders so I can replace them with better ones. Underneath I found quite significant pitting of the mast. So I was wondering, what is the best thing to treat the corroded mast with (to hopefully stop further corrosion) before I fit the new spreaders?

Thanks.


1140 Gadfly
1434 J.I.B.E.
1727 Atreus
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Re: Corroded mast [Re: Greg/Debra] #271543
04/18/14 04:27 AM
04/18/14 04:27 AM

T
thricebitten
Unregistered
thricebitten
Unregistered
T



Hi Greg,

I just clean the area realy well s/s wire brush sandpaper what ever you have and then paint Duralac disimilar metals jointing compound on it. Or you could use a etch primer, as long as it seals the aloy completly.

Last edited by thricebitten; 04/18/14 04:27 AM.
Re: Corroded mast [Re: Greg/Debra] #271565
04/18/14 03:28 PM
04/18/14 03:28 PM
Joined: May 2011
Posts: 108
Port Hedland
Beckit 1824 Offline
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Beckit 1824  Offline
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Joined: May 2011
Posts: 108
Port Hedland
Greg,
There is no such thing as too much duralac. I paint the mast and the base of the fitting separately, allow it to dry, and carefully mount it so as not to destroy the coating.

I also bed my fittings in sikaflex, as it creates a rubber gasket between everything. Beware though as some silicons and sikaflexs have acid in them that create more corrosion. If you stick with bathroom/kitchen types you should be ok and I haven't had any problems.

You may want to consider; depending on the extent of the corrosion, putting a aluminium sleeve or patch over the mast. The spreaders are a high load point on the mast and you tend to develop hair line cracks between corrosion points. Give your mast a bit of a bend and see if any are evident.

For $260 you can get a new section from Phillip Warren Smith via the association. If you mast does fail and you rips your sail it will cost $100 at least to fix plus any diamond wires/fittings you will have to replace. It might be time to treat yourself to a easter mast and keep the old one as a spare.

Luke

Re: Corroded mast [Re: Greg/Debra] #271579
04/19/14 01:26 PM
04/19/14 01:26 PM
Joined: Jun 2004
Posts: 502
Port Noarlunga, SA, Australia
D
Darryn Offline
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Darryn  Offline
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Joined: Jun 2004
Posts: 502
Port Noarlunga, SA, Australia
Use a Nylon brush like this http://www.bunnings.com.au/josco-75mm-abrasive-nylon-wheel-brush_p6327571 to remove the corrosion. Stainless steel brushes and most sandpapers scratch the aluminum and can lead to further corrosion.

Darryn

Re: Corroded mast [Re: Darryn] #271580
04/19/14 04:48 PM
04/19/14 04:48 PM

T
thricebitten
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thricebitten
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T



Hi Darryn,

thanks for that info, never seen those, a good hint.

Re: Corroded mast [Re: Greg/Debra] #271632
04/22/14 05:17 AM
04/22/14 05:17 AM
Joined: Aug 2011
Posts: 182
Grafton, NSW
Greg/Debra Offline OP
member
Greg/Debra  Offline OP
member

Joined: Aug 2011
Posts: 182
Grafton, NSW
Many thanks to Gary, Luke and Darryn for their advice. I already have a S/S brush but will look into the nylon one. I will also get will get some Duralac which is available locally.

Hey Luke, last time I was at Speers Point there were no Mossies there. Can anyone tell me how many Mossies are sailing in NSW at the present?


1140 Gadfly
1434 J.I.B.E.
1727 Atreus
Re: Corroded mast [Re: Greg/Debra] #271647
04/22/14 08:28 AM
04/22/14 08:28 AM
Joined: Apr 2012
Posts: 11
Warners bay , nsw , Australia
M
mousetrap Offline
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mousetrap  Offline
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Joined: Apr 2012
Posts: 11
Warners bay , nsw , Australia
Hi Greg
There is Luke and myself at Speers Point and one at lake Jindabyne #1044.
If you are keen we have the Anzac regatta at Speers Point this Friday,one race.Also coming up is the Keepit Kool regatta (near Tamworth) june long weekend,six races.
Did you buy another mozzie?


Cheers,Dave.
CHA-CHING 922
BITE ME 1749
Re: Corroded mast [Re: Greg/Debra] #271686
04/22/14 06:54 PM
04/22/14 06:54 PM
Joined: Aug 2011
Posts: 182
Grafton, NSW
Greg/Debra Offline OP
member
Greg/Debra  Offline OP
member

Joined: Aug 2011
Posts: 182
Grafton, NSW
Hi Dave,

Thanks for the info. How long have you and Luke been sailing at Speers Point?

Yes we did buy another mozzie; 1727. It is in Victoria and we haven't picked it up yet.

Regards,
Greg.


1140 Gadfly
1434 J.I.B.E.
1727 Atreus
Re: Corroded mast [Re: Greg/Debra] #271697
04/22/14 08:47 PM
04/22/14 08:47 PM
Joined: Apr 2012
Posts: 11
Warners bay , nsw , Australia
M
mousetrap Offline
stranger
mousetrap  Offline
stranger
M

Joined: Apr 2012
Posts: 11
Warners bay , nsw , Australia
Hi Greg
Luke moved up here from Victoria last oct/nov and has been sailing since then when he can.I purchased 1749 late February and have sailed most races since then, bit of a learning curve but improving.
Will have 922 on the water by next sailing season, there is a young bloke in the club who is keen to sail it in the nationals.


Cheers,Dave.
CHA-CHING 922
BITE ME 1749
Re: Corroded mast [Re: Greg/Debra] #271700
04/23/14 12:54 AM
04/23/14 12:54 AM
Joined: May 2011
Posts: 108
Port Hedland
Beckit 1824 Offline
member
Beckit 1824  Offline
member

Joined: May 2011
Posts: 108
Port Hedland
Hi Greg. I just got back to Victoria to sail at the sloop states. I'm not sailing sloop but a few of us are just going for a blast.
Only the 2 of us at Speers point so far but heaps of interest, especially from the f18s I blast past with my kite up. A lot of guys there are frustrated by rising boat costs, the hassle of keeping a crew and size and weight of their boats. The few races I have managed between my new boat I've been pretty competitive and with the nationals there next year hopefully the interest will peak.
Luke


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