Fixing cleats to mast
Printed From: myHanse.com
Category: General
Forum Name: Chit Chat
Forum Description: Talk about anything to do with your boat
URL: https://www.myhanse.com/forum_posts.asp?TID=4959
Printed Date: 27 March 2026 at 01:44
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Topic: Fixing cleats to mast
Posted By: Ruach
Subject: Fixing cleats to mast
Date Posted: 31 March 2011 at 11:33
| I want to fix a couple of nylon cleats to the mast of my 341 to secure and adjust the stack-pack lines. I am conscious that fixing the nylon cleat to the mast with stainless self-tapping screws will lead to corrosion of the aluminum of the mast. Can anyone suggest an alternative secure method of fixing that will avoid this problem? |
Replies:
Posted By: Old Finn
Date Posted: 31 March 2011 at 13:04
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Hi Ruach, if you want to fix a cleat to your mast, I would only use Monel rivets. ( Sorry-I don´t know if this is an English expression - "Monel" is an alloy of nickel (70%) and copper (30%) and small amounts of aluminum and / or silicon.) Every other material will lead to corrosion in aluminium.Greetings from Stuttgart axel ------------- S/Y Indian Summer H 320#411 - Sail today, work later |
Posted By: holby
Date Posted: 31 March 2011 at 15:27
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Axel, yes "Monel" is also used in UK, these rivets are the ones we usualy use when riveting cleats etc to laser boom/mast to repair. We usually bed the item on a layer of Sikaflex. Dave ------------- Hanse 301, tiller steering, Volvo 2010 (10hp) 
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Posted By: greyghost
Date Posted: 31 March 2011 at 16:18
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I've always used Lanacote when installing stainless on or in aluminum. Never a problem with corrosion or removal even after years in place. :-)
Cheers, Doug ------------- Cheers, Doug Grey Ghost 342 #405 |
Posted By: Niels
Date Posted: 31 March 2011 at 17:26
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Besides using screws in masts can be dangeres as the sharp tip can damage your cables as well as your halyards when the boat is moving about so rivets is the right solution.
Regards ------------- Niels |
Posted By: CharlesP
Date Posted: 31 March 2011 at 23:48
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Hi Ruach - yes, use Monel pop rivets plus a corrosion prevention paste - I use Duralac. Drill the hole, liberally coat hole and rivet with Duralac, insert rivet and "pop" it. You may have to buy extra long rivets for fixing plastic fittings due to the thickness - you good Chandler should be able to advise.
Charles ------------- 'MERIDIAN LADY' 320 Nr 536 2010 Medway |
Posted By: Old Finn
Date Posted: 01 April 2011 at 08:52
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Hi Charles, I think Duralac paste is quite expensive ( about 25€ in Germany). A chemist told me to use Lanolin, - you can get it in every pharmacy for less than 5€ - and it s working like Duralac anti-corrosion paste. I use it since a couple of years on my mast-top lights (no more corrosion) in the same way you have discribed. Greetings axel ------------- S/Y Indian Summer H 320#411 - Sail today, work later |
Posted By: CharlesP
Date Posted: 01 April 2011 at 09:39
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Axel - I was so pleased to read your post. About 4 years ago I tried to buy Lanolin in UK. Everywhere told me the same answer - it was no longer available. The main reason I wanted it was to coat my underwater hull fittings and propeller against fouling.
It is also very kind for sore skin. Now you also say that it prevents corrosion. So it is a very good product to have onboard. I do not expect to visit Germany this year, but I will try to get it from a Pharmacy in France. Does your Pharmacist just fill a small container for you, or do you buy it under a trade name? Charles ------------- 'MERIDIAN LADY' 320 Nr 536 2010 Medway |
Posted By: Old Finn
Date Posted: 01 April 2011 at 13:27
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Hi Charles, I`ve send a pm to you with some brands, which are still producing Lanolin. greetings axel ------------- S/Y Indian Summer H 320#411 - Sail today, work later |
Posted By: Brightside
Date Posted: 01 April 2011 at 16:06
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Hi.
Tef Gel, available in a small syringe, is an excellent anti corrosion agent and also a very good lubricant (40%PTFE in a waterproof paste). My only concern is that it's Tef-Gel is too good and screws can back-out under vibration. For screws I'd use a Locite thread seal and make sure the whole thread and underside of the head of the screw is covered. Loctite is now available in an easy to use stick form (similar to a lip stick). Google Tef Gel and Loctite 248 Stick Regards Mike Update. I've spoken to the UK Sparcraft agent in the past. They prefer to use machine screws, not self tappers, but that does of course mean you have to tap a thread into the hole. |
Posted By: Lippe
Date Posted: 03 April 2011 at 18:25
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Hi Axel and Dave, How it is in a Monel rivet. The "rivet" itself is Monel, but what material shall be the metal inside the rivet itself, The metal part that is used to draw the rivet to the final shape and will be cut. There is left part of that material inside the rivet and if that is steel, doesn't it generate corrosion with the Monet. I found only Monet rivets with steel inside part? Best Regards Kari |
Posted By: CharlesP
Date Posted: 03 April 2011 at 20:31
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In theory Kari, you are right. But in practice, I have never encountered a corrosion problem from the centre part. It often drops in or can be pushed in to lie at the bottom inside the mast.
Charles ------------- 'MERIDIAN LADY' 320 Nr 536 2010 Medway |
Posted By: Old Finn
Date Posted: 03 April 2011 at 22:41
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Hi Kari, I can only agree with Charles, the centrepart mostly drops dowem to the bottom of the mast, and this is normaly made out of Cast iron, and there is no corrosion problem with steel. Greetinngs axel ------------- S/Y Indian Summer H 320#411 - Sail today, work later |
Posted By: Ruach
Date Posted: 05 April 2011 at 12:09
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Thanks for all your helpful comments. Getting a pair of better quality cleats, which I will fix with rivets. The riggers at my marina will give me a smear of Duralac to provide the insulation between the different metals.
After all this, I hope being able to lower the lazy bag while sailing will make some improvement to the overall performance of the mainsail and will also look tidier when the sail is stowed. |