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manuel
Joined: 08 Oct 2007 Posts: 1158
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Posted: Thu Oct 17, 2019 4:57 pm Post subject: Mast base u-joint lubrication, useless? |
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As I was inspecting my uj, a thought came to my mind to lubricate where the plastic cup meets the metal part. Useless, good practise, purposeless, waste of lubricant, theoretical only, revolutionary? Salt water only... _________________ *NEW* - Manu's Windsurfing Blog, The STORE! |
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Ugly_Bird
Joined: 04 Nov 2008 Posts: 335
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Posted: Thu Oct 17, 2019 5:09 pm Post subject: Re: Mast base u-joint lubrication, useless? |
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manuel wrote: | As I was inspecting my uj, a thought came to my mind to lubricate where the plastic cup meets the metal part. Useless, good practise, purposeless, waste of lubricant, theoretical only, revolutionary? Salt water only... |
Any gunky/greasy lubricant will eventually get even gunkier from attracting dirt. I had success with silicone based lubricants such as Jig-a-loo. It is not only silicone based but also consists of microspheres, which work as tiny ball bearings. I also used the same stuff to lubricate the tailpeaces of booms. Works as a charm.
Good luck. |
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isobars
Joined: 12 Dec 1999 Posts: 20936
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Posted: Thu Oct 17, 2019 5:44 pm Post subject: |
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Doesn't the silicone migrate to places you don't want it? I've always used silicone-free dry spray lubricants to avoid that problem. |
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westender
Joined: 02 Aug 2007 Posts: 1288 Location: Portland / Gorge
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Posted: Thu Oct 17, 2019 6:56 pm Post subject: |
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Clickbait |
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Ugly_Bird
Joined: 04 Nov 2008 Posts: 335
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Posted: Thu Oct 17, 2019 7:23 pm Post subject: |
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isobars wrote: | Doesn't the silicone migrate to places you don't want it? I've always used silicone-free dry spray lubricants to avoid that problem. |
Silicones are very versatile chemicals. Those you are trying to avoid are liquid silicones. In terms of gunkiness they are not much different from olefin based lubricants. Jig-a-loo contains microspheres of solid silicone. It dries out completely leaving no mess. |
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GURGLETROUSERS
Joined: 30 Dec 2009 Posts: 2643
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Posted: Fri Oct 18, 2019 1:21 am Post subject: |
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An interesting topic.
If you used a normal UJ assembly on dry land (Skateboard rig for example) it would seem to make sense to lubricate it to reduce the wear rate. But it seems reasonably clear that water, whether sea or fresh, is not so bad a lubricant in itself.
At least, I like to believe so!! |
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wynsurfer
Joined: 24 Aug 2007 Posts: 940
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PeconicPuffin
Joined: 07 Jun 2004 Posts: 1830
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dllee
Joined: 03 Jul 2009 Posts: 5329 Location: East Bay
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Posted: Tue Oct 22, 2019 11:17 am Post subject: |
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Water lines just fine.
But rinse out small sand particles and grit. |
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GURGLETROUSERS
Joined: 30 Dec 2009 Posts: 2643
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Posted: Tue Oct 22, 2019 1:12 pm Post subject: |
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Some grades of hard plastic (a contradiction in terms not withstanding) have next to no coefficient of friction on almost any wet surface as can be verified by walking (or trying to) down any wet steep hill in cheap supermarket hard plastic soled so called sports shoes. (A steep wet grassy hillside - don't even think about it. )
I don't like playing in the bath (didn't the great lamented Brucie once try to balance on a board in his bath?) which is only fresh water, and nothing like the sea, but I felt, for this 'click bait' thread, a little test would be in order.
I rested two different and weighted hard plastic mast bases on a long flat alloy plate with a gentle stream of water (the cold tap, naturally) flowing along it, and progressively raised the end to see which base slid friction (and wear?) free down it first. I can confirm that the Bic base left the other Arrows base standing. (Once on it's way there was no stopping it. )
I therefore conclude that Bic hard plastic (they are a leading plastics company) will have less friction and a lower rate of wear than many others.
Perhaps that lack of friction may also explain why I can't read my own writing, since I buy cheap bundles of their plastic pens, which are equally slippery between the fingers! (Though I don't usually write much in the bath. ) |
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