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Aluminium vs Carbon Mast - Cost vs Benefit

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Kamikuza
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Re: Aluminium vs Carbon Mast - Cost vs Benefit

Postby Kamikuza » Wed Jun 09, 2021 11:40 am

frequentflyer wrote:
Tue Jun 08, 2021 4:30 pm
I recently bought a new foil and intentionally went with aluminum for my mast. Everything else is carbon, but I went with the aluminum for two reasons: 1. It is stiffer than its carbon cousin for the brand that I bought and 2. I want my board to track downwind. I can’t believe nobody’s brought this up yet. The carbon cousin is only slightly lighter, but enough so that it floats. My current setup floats for a while but then the mast sinks and it comes downwind. Perfect. Given the brand I went with, I wouldn’t “upgrade” to carbon even if it were the same price.
My two wings at the moment are 660 (1.1m2, 1.6L) and 820 (1.5m2, 2.6L). The 660 tends to end up board flat on the water, the 820 almost always on its side ... and sailing upwind :lol: needs a careful body drag in light wind, but the advantage is that I tend not to stack it up so hard when the wind is weak, far from the board.

Had a 1020 for a demo, 2m2 area and 4.1L volume. It floats with the wing entirely on the surface, board nose up in the air :lol:

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Re: Aluminium vs Carbon Mast - Cost vs Benefit

Postby Flyboy » Wed Jun 09, 2021 2:55 pm

Kamikuza wrote:
Wed Jun 09, 2021 11:34 am
Flyboy wrote:
Tue Jun 08, 2021 4:39 pm
the connection between the mast & the fuselage is subject to flex
Depends how they do it, I guess. Using a tongue-in-groove type join will eliminate that I reckon. As will a big, wide connection into the wings...
My Gong foil has a "tongue-in-groove" type of connection. However, there is still some movement there - it's impossible to make a completely tight connection without making it very difficult to take it apart. I notice the 2nd generation Gong alu foils have an extra piece that inserts to make the mast fuselage connection more solid (as well as a thicker mast ... however this presumably also adds to the weight.

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Re: Aluminium vs Carbon Mast - Cost vs Benefit

Postby jumptheshark » Wed Jun 09, 2021 3:29 pm

Having had both a Zeeko and a Lift, I have always been puzzled by the elaborate mast to fuse connections that are out there. Slingy, Armstrong, and F-one with their strange systems all seem like they are trying to reinvent the wheel. They are are also the ones that seem to have the most play in them.

Keep it simple and use quality hardware.

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Re: Aluminium vs Carbon Mast - Cost vs Benefit

Postby sedelito » Wed Jun 09, 2021 5:36 pm

Nobody writes about feeling of the mast?
I think alu feel kind of dead undernerh while on carbon you feel more response of whats happening with foil.
Also a good carbon mast should be lighter than alu.
I think the best right now is SS Phantasm mast and it's also 100% carbon not foam or wood core.

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Re: Aluminium vs Carbon Mast - Cost vs Benefit

Postby Flyboy » Wed Jun 09, 2021 6:23 pm

I owned a 2017 LP carbon foil. It had an "elaborate mast to fuse connection" - beautiful design, beautiful quality & very light. Absolutely no play possible between the different components ... however: assembling & dismantling the foil was a fairly awkward & time consuming process (LP has since changed the system & beefed up the mast). The mast was quite slim in profile & width and at 100cm this resulted in some noticeable flex while foiling. This gave more "feel" to the foil for sure. I have no idea if that was a good thing. It felt somewhat alarming at the time, but I didn't have enough experience to judge. It seems to me that you want the response of the foil to be solid & predictable so that you can understand what the water is doing.


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