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Which is the durability of a carbon foil?

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DanielorDani
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Which is the durability of a carbon foil?

Postby DanielorDani » Sat Feb 10, 2024 12:05 am

Which is the durability of a carbon mast foil?

As the ripstop from a kite looses performance after a time, because it streaches, can I expect that after a time a carbon mast will loose performance due to some concret reasons that I dont know?

I have an aluminium mast and I am doubting if its worth to buy a carbon one.

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Re: Which is the durability of a carbon foil?

Postby Cab Driver » Sat Feb 10, 2024 12:25 am

DanielorDani wrote:
Sat Feb 10, 2024 12:05 am
Which is the durability of a carbon mast foil?

As the ripstop from a kite looses performance after a time, because it streaches, can I expect that after a time a carbon mast will loose performance due to some concret reasons that I dont know?

I have an aluminium mast and I am doubting if its worth to buy a carbon one.
Durability of a proper carbon fiber layup is excellent. On top of that, aluminum masts are (likely) all manufactured using an extrusion process resulting in the profile, chord length, and thickness all being identical along the length of the mast. With a carbon mast, all of these variables can be changed in order to tune the characteristics of the mast along different points in the length resulting in a better performing mast. Even the bend of the mast can be controlled at different points in the length. This simply isn't available using extruded aluminum alloy. Lastly, aluminum does not play well with a host of fasteners that are available and necessary due to the forces on the assembled system, so to keep the electrolysis corrosion to a minimum, either helicoils or some other method must be used to prevent the fasteners from chemically bonding to the mast when left mounted with screws tightened for relatively short periods of time (like in a matter of days). So I would say "yes", carbon masts are quite durable so long as it's from a reputable company using a proper layup manufactured in a well controlled process. I don't think there is even a debate about the performance; carbon wins hands down as it offers the designer so many options to improve performance.

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Re: Which is the durability of a carbon foil?

Postby purdyd » Sat Feb 10, 2024 2:22 am

Carbon all day. The worst part of aluminum is corrosion.

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Re: Which is the durability of a carbon foil?

Postby knyfe » Sat Feb 10, 2024 2:53 am

second that

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Re: Which is the durability of a carbon foil?

Postby OzBungy » Sat Feb 10, 2024 5:15 am

My kite foils are up to just under 900 hours. My wing foils are 300-400 depending on the combination of components I use. Virtually zero wear and tear. Virtually zero maintenance. I ride the foils into the sandy bottom all the time. The paint scratches and chips. I used to sand and paint. Now I just sand the paint chips smooth.

I did drop one carbon foil on the road in the first week I owned it. The tip split and was smashed up a bit. I patched it up with a piece of fibreglass and epoxy paste and used for hundreds of hours. During lockdown I pulled out the epoxy paste and rebuilt the tip with carbon. Really easy to do as long as you're patient and learn the fairly simple principles.

During a break I rented some foiling gear and the mast screws were covered in Tefgel. It got on my hands during packup and I had to use methylated spirits to clean it off.

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Re: Which is the durability of a carbon foil?

Postby Pera » Sat Feb 10, 2024 8:40 am

Would corrosion be a problem with aluminium in fresh water?

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Re: Which is the durability of a carbon foil?

Postby airsail » Sat Feb 10, 2024 11:31 am

Pera wrote:
Sat Feb 10, 2024 8:40 am
Would corrosion be a problem with aluminium in fresh water?
You still have possible corrosion between the stainless screws and alloy parts, but nowhere near the problem when used in salt water. Tef gel should solve any issues long term.
Axis use alloy fuselages, they looked at carbon but the resulting increase size in cross section to get the required strength would have increased drag and decreased performance, so they stuck with alloy for the fuselage.
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Re: Which is the durability of a carbon foil?

Postby downunder » Sat Feb 10, 2024 3:57 pm

DanielorDani wrote:
Sat Feb 10, 2024 12:05 am
Which is the durability of a carbon mast foil?

As the ripstop from a kite looses performance after a time, because it streaches, can I expect that after a time a carbon mast will loose performance due to some concret reasons that I dont know?

I have an aluminium mast and I am doubting if its worth to buy a carbon one.
Mast?

Man, mast lasts forever.

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Re: Which is the durability of a carbon foil?

Postby Mynameiszombie » Sun Feb 11, 2024 3:17 am

downunder wrote:
Sat Feb 10, 2024 3:57 pm

Mast?

Man, mast lasts forever.
This is the carbon mast of my Spotz Tuna 3. It is the end that connects to the fuselage. There is no way to fix it, but a high chance of losing the entire foil. I had to bond it with epoxy into the fuselage, resulting in an unimast-foil setup that is completely unsuitable for travel.
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Re: Which is the durability of a carbon foil?

Postby Peter_Frank » Sun Feb 11, 2024 9:22 am

But if you don't travel, no problem :rollgrin:

PS: Why is this thread not in the Hydrofoil section?


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