Hi, about T800 and T900 100%C masts durability, we've had many cases in which the mast quickly loses its curvature in the joint point in just a year or less (esp T900), despite taking extra care. Any input?

I am unsure as to what you are asking? Lost its curvature? In the join area.?

Those masts lose their shape (straight line when unrigged ) at the joint point. There is an obvious deviation in the inserted segment of the lower part of the mast at the joint point when unrigged, as shown in the photo. As a consequence, the mast no longer functions properly. This occurred quite soon (within about a year or less ) despite taking extra care, in many T800 and T900 100 C masts, and it cannot be fixed (tried to reinforce the joint area, but no luck).

Hi, what brand is it ? and has it been left rigged for extended periods?
if its less than a year old i'd be asking about warranty

Just rig it the other way, should straighten up over time

That looks like a mast I had, a Severne red 430 RDM and to be fair it had a permanent bend in it. When you rolled it on a flat surface it would oscillate.

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choco said..
Just rig it the other way, should straighten up over time

We've seen this deformity happen not only in severe REDs but also in some other brands like older Gaastra 100s and T900 Duotone. We did that, we've rigged the other way to straighten it, and it broke after some sessions.

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AI.Dave said..
Hi, what brand is it ? and has it been left rigged for extended periods?
if its less than a year old i'd be asking about warranty

No, it was used with extra care, always derigged after sessions, never left under the sun. Severne's policy is very strict and does NOT cover in most cases (I know many broken masts, RED ones, some broken within a few months None of THEM were covered. A well-known Windsurf Brand Owner broke 3 REDs during this year. None Covered. So i think there is no chance of replacing it. Nevertheless, I use the REDs only in small waves and not in bigger conditions (use BLUE one with no problems), but even with that kind of use, some RED break easily, like " one wash mast "

thats a worry..
i've never seen any of the crew i sail with break a severne mast, except once in a heavy shallow shore break. but they mostly use gorillas or severne blue

Switched from Red to Blue after breakage. 100% not worth it in the waves.

The bend at the ferrule depends probably on use of a glue that is not epoxy. Personally, I always check before rigging and insert the mast in the opposite way. It seems to me that after a few dozen rigging it bends less than when new. Maybe depends on the glue curing over time.
About carbon grade (T800, T900). The "better" the carbon, the stiffer it is. So, in order to have not overly stiff masts, an "higher grade" carbon will require thinner mast walls, with the obvious results (break). So in this case "better" does not always mean "better". A possible alternative solution is changing mast geometry, so going to RDM or MDM masts. In the case of wave masts this is pretty obvious, in the case of slalom/race/freeride masts I personally believe that MDM masts will prevail in the end. After all, modern "drop shape" masts are just that (more or less): MDMs with an enlarged base in order to fit a 48 mm diameter extension. Make that 43 mm, and voila ...And, as for Severne masts: I hear terrible stories about that and know of people doing incredible things in order to avoid breaks. Some even replace the broken mast half with a lesser grade one. I heard from a very credible source (that I will not reveal) that someone discovered that S2Maui Venom masts are a good replacement for 100% Severne masts, and do not break.

I feel it's my duty as someone who repairs sails to warn people to stay away from Severne Apex Pro masts, the red ones with 100% carbon. I fixed 3 Machs that suffered shrapnel-like damage to the mast sleeve due to breakage of said mast and I personally witnessed one crack on the beach rigged on a HyperGlide4 sail, this sail somehow got barely damaged. Criminally bad series. I'm running a 90% Blue Apex on my foil race sails and have nothing but praise for those, it survived a few catastrophic catapults and is still going strong *knocks on carbon*.

Had masts from 4 different European factories. They all bent at the ferrule.
Sometimes it's the ferrule moving in the mast, and sometimes it's the actual ferule bending.
The ferrule movement is due to the adhesive being soft and ' flowing", it isn't epoxy, but I don't know if epoxy will help as see below
The bent ferrule I believe is due to crap resin and/or Inadequate attention to the cure cycle of the ferrul stock
It isnt a100 percent failure rate. But it is common to 4 different factories. It's ****. Mast quality is worse than 20 years ago.

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sheddweller said..
Had masts from 4 different European factories. They all bent at the ferrule.
Sometimes it's the ferrule moving in the mast, and sometimes it's the actual ferule bending.
The ferrule movement is due to the adhesive being soft and ' flowing", it isn't epoxy, but I don't know if epoxy will help as see below
The bent ferrule I believe is due to crap resin and/or Inadequate attention to the cure cycle of the ferrul stock
It isnt a100 percent failure rate. But it is common to 4 different factories. It's ****. Mast quality is worse than 20 years ago.

Yeah, and it is not only the masts- also other components- sails, booms etc. Hard to find trained personnel these days- nobody wants to work.

Point 7 mast K99 could be an option for sails like Severne , it s a little heavier than Severne s red (ex. 430 1,65 P7 K99 vs 1,6 Severne red) . Any input for those masts ?

point-7.com/product/rdm-mast-2025/

" By moving the ferrule to the top, we've removed that stress, preventing potential damage to the top section and reducing the risk of breakages during extreme maneuvers".

... like the 2008 NP combat X mast

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Snapfigure said..
point-7.com/product/rdm-mast-2025/

" By moving the ferrule to the top, we've removed that stress, preventing potential damage to the top section and reducing the risk of breakages during extreme maneuvers".

... like the 2008 NP combat X mast

But how does this make the mast stronger? Is the top section more likely to deform? Only breakages I've seen have been bottom sections

You are right about their comment cause most breakages happen around areas with high stress like near boom attachment and high tension area near high bend curves in the bottom sections but maybe masts with ferrule to the top are less prone to distort at that point. Never had problems like that with 2008 and newer NP s masts and very positive feedback for point 7 k99 so far.