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GURGLETROUSERS
Joined: 30 Dec 2009
Posts: 2643
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 Posted: Mon Sep 05, 2016 5:10 am Post subject: |
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Should have added - most new sails nowadays seem to have built in pulleys, so I drill the bar out and slot in a new bar, cut to length ( threads cut at each end for nuts) and a couple of spacers to centralise the pull off the hook.
It's sometimes necessary to shave a little alloy off the top of those 'chunky' alloy 3 or 4 pulley hooks for clearance, but there has never been a failure yet. It's the base of those alloy hooks that hold the pulleys in, which corrode away first. Have to replace them regularly.
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nw30
Joined: 21 Dec 2008
Posts: 6485
Location: The eye of the universe, Cen. Cal. coast
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| Posted: Mon Sep 05, 2016 1:08 pm Post subject: |
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In your "continuing quest" to upgrade your gear, I'd be more inclined to get a RDM and extension. The choice between an alum. and carbon extension, is pretty minor as compared to replacing the mast, and you can go either way with the extension (still minor), then you will notice a huge difference in your entire rig.
RD masts matter.
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boardsurfr
Joined: 23 Aug 2001
Posts: 1266
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| Posted: Mon Sep 05, 2016 6:26 pm Post subject: |
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| nw30 wrote: | In your "continuing quest" to upgrade your gear, I'd be more inclined to get a RDM and extension. The choice between an alum. and carbon extension, is pretty minor as compared to replacing the mast, and you can go either way with the extension (still minor), then you will notice a huge difference in your entire rig.
RD masts matter. |
Agree fully. I used to use aluminum booms, then hybrids (which suffered from the corrosion problems other described), finally carbon - would never to back.
Used SDM masts in the past, switch to RDMs, never use SDMs anymore unless I have no choice (some race sails).
But extensions? We have mostly aluminum, a few carbons, and never noticed a difference. I use the first one I grab.
While switching from SDMs to RDMs, though, we also started paying more attention to bend curve characteristics. That also makes a big difference. We now have 2 or 3 masts of the same size with different bent curves for different sails. Some of those we got used for less than the cost of a new carbon extension.
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sound_solution
Joined: 23 Jan 2015
Posts: 2
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| Posted: Sat Sep 10, 2016 12:29 pm Post subject: |
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Yesterday:
Long Chinook Alloy RDM Europin with 34 extension vs. 6.8 Aerotech Phantom and Epic 430 60% carbon mast on Kona One in 4 foot breaking surf. The adjustment ring has been moved for the picture, it was not up that high. The mast extension lost. So, they do bend...[/img]
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isobars
Joined: 12 Dec 1999
Posts: 20935
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| Posted: Sat Sep 10, 2016 2:38 pm Post subject: |
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| sound_solution wrote: | | So, they do bend...[/img] |
Just think of the stress that put on the mast wall! It's a wonder it didn't snap, and that much excess tubing up the mast voids any warranties on both mast and extension ... for a reason: it exceeds design stress limits.
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mamero
Joined: 25 Aug 2013
Posts: 380
Location: Vancouver, Canada
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| Posted: Wed Sep 14, 2016 11:29 am Post subject: |
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| sound_solution wrote: | Yesterday:
Long Chinook Alloy RDM Europin with 34 extension vs. 6.8 Aerotech Phantom and Epic 430 60% carbon mast on Kona One in 4 foot breaking surf. The adjustment ring has been moved for the picture, it was not up that high. The mast extension lost. So, they do bend...[/img] |
Yikes! 
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