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Strongest RDM (and breaks?)
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PM10080717



Joined: 23 Jul 2008
Posts: 9

PostPosted: Mon Aug 04, 2008 6:37 pm    Post subject: Strongest RDM (and breaks?) Reply with quote

What is the poll on the strongest RDM's, and what's with the breaking Gulf Techs?
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isobars



Joined: 12 Dec 1999
Posts: 18328

PostPosted: Mon Aug 04, 2008 7:12 pm    Post subject: Reply with quote

Only Nolimitz has demonstrated its mast's capability of touching its tip to its base, but impact and crush resistance are also important. Maybe the latter explains the alleged Gulftech problem; its walls are thinner.

Now, about this Gulftech mast breakage problem: it's news to me, and my nuke mast is a Gulftech (at 11 feet, it feels weightless). Tell or point me to more info about this problem, please, 'cause rescues in nuke conditions are sometimes just not feasible.

Mike \m/
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slayer666



Joined: 18 Jan 2008
Posts: 41

PostPosted: Mon Aug 04, 2008 7:31 pm    Post subject: Reply with quote

After breaking my 5 years old 400cm Powerex Z-wave earlier this year, I went RDM. I got a Powerex RDM 100 which I broke twice, both times after 4 sessions. First time hit a rock in the break (no luck), second time snapped out of nowhere way outside. They got replaced under warranty.
In the meantime I got an Ezzy-NoLimitz (made in USA) which seem to hold on.

Your pick :
- I have bad luck
- Powerex Chinese made masts are not reliable
- RDMs are incompatible with my North wave sails
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PM10080717



Joined: 23 Jul 2008
Posts: 9

PostPosted: Mon Aug 04, 2008 7:40 pm    Post subject: Reply with quote

isobars wrote:
Tell or point me to more info about this problem, please, 'cause rescues in nuke conditions are sometimes just not feasible.

Mike \m/


Ah, it's a China issue. That's all I will say. They are having issues with long things? (ceilings too low?).
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89Spring



Joined: 24 Jul 2003
Posts: 241

PostPosted: Tue Aug 19, 2008 10:12 am    Post subject: Reply with quote

If you can bend a mast basically in half touching tip to base, to me this has nothing to do with strength. This to me seems like a very soft mast sort of like a piece of string cheese
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isobars



Joined: 12 Dec 1999
Posts: 18328

PostPosted: Tue Aug 19, 2008 8:05 pm    Post subject: Reply with quote

It's a 25MCS CC mast, the same stiffness you use. And it wasn't a person - sure as heck not me -- that bent one into a circle. The point of the demonstration was that they won't often break when surf drives the tip into the ocean floor.

Mike \m/
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laci



Joined: 22 May 1996
Posts: 168
Location: SoCal&the Gorge

PostPosted: Thu Aug 21, 2008 2:34 pm    Post subject: Reply with quote

A friend of mine had an older Nolimitz RDM laying on the beach at the Hatch last week, with a 5.2 rigged on it. All of a sudden we heard a loud POP. The mast spontaineously snapped, a foot or so above the bottom of the top section. No warning. Clean break. The sail was OK. We all went WTF! Might have had previous impact damage at that point, no way to know.
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LeeD



Joined: 12 Jun 2008
Posts: 1175

PostPosted: Thu Aug 21, 2008 2:49 pm    Post subject: Reply with quote

With lots of experience, we've seen that happen to well over 30 windsurfing masts.
The beach is a tough test for windsurfing masts Laughing Laughing
Heat, previous damage, dark luff sleeve, extreme mast bend sail styles, and many more things can contribute to a beach breaking a mast.
The peeps that went ..."WTheF" were just surprised or not experienced.
Heck, it even happenned to me a month ago!
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keycocker



Joined: 10 Jul 2005
Posts: 3596

PostPosted: Thu Aug 21, 2008 5:23 pm    Post subject: Reply with quote

Trivial knock on the side of any carbon spar can be both invisible and fatal to the integrity. This is widely noted in all uses of carbon fibers. In the early days the wisest Euros refused to sail carbon masts esp in big winds or waves. They only changed over when glass masts stopped being made kinda like in the States with cambered sails.
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89Spring



Joined: 24 Jul 2003
Posts: 241

PostPosted: Sat Aug 23, 2008 12:44 pm    Post subject: Reply with quote

isobars wrote:
It's a 25MCS CC mast, the same stiffness you use. And it wasn't a person - sure as heck not me -- that bent one into a circle. The point of the demonstration was that they won't often break when surf drives the tip into the ocean floor.

Mike \m/

Dude you have no idea how strong I am. I think you took it a little too literally. I got the idea and I still would say that would be a soft mast.
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