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by mopman365
Fri Oct 06, 2017 5:44 am
Forum: Hydrofoil Builders
Topic: Big wings
Replies: 19
Views: 1420

Re: Big wings

1600cm2 is pretty much where downwind SUP/Surf foil wings are at now, so you are on the right track. -- Gunnar Sure? I thought the large Go-Foil and Naish wings are 1250ish? I am talking about the most recent foils, not production stuff that is about a year old. -- Gunnar Thanks for the tip-off. I ...
by mopman365
Thu Oct 05, 2017 2:25 pm
Forum: Hydrofoil Builders
Topic: Big wings
Replies: 19
Views: 1420

Re: Big wings

gmb13 wrote:
Thu Oct 05, 2017 12:51 pm
1600cm2 is pretty much where downwind SUP/Surf foil wings are at now, so you are on the right track.

--
Gunnar
Sure? I thought the large Go-Foil and Naish wings are 1250ish?
by mopman365
Fri Sep 08, 2017 12:08 pm
Forum: Hydrofoil
Topic: Production carbon mast composition
Replies: 22
Views: 1860

Re: Production carbon mast composition

I broke my Moses Vorace mast yesterday and got to see the construction...clearly two halves bonded with a thin white foam core. I believe the engineering of carbon is all about the skin and not a core...but wondered if some are solid layers of carbon? I would think layup would be difficult to do so...
by mopman365
Fri Aug 11, 2017 5:13 am
Forum: Hydrofoil Builders
Topic: Plate mount bolt-in Duo option
Replies: 3
Views: 403

Re: Plate mount bolt-in Duo option

Cool idea. Have you kited duo surfboards? I have been curious to try but haven't done it, 90% sessions this year have been flat water and lighter wind learning to foil. There are some interesting but not widespread designs from "twingle" fin boards 1-3" apart to the duo which looks 5-6" apart. I be...
by mopman365
Thu Aug 10, 2017 1:43 pm
Forum: Hydrofoil Builders
Topic: Plate mount bolt-in Duo option
Replies: 3
Views: 403

Plate mount bolt-in Duo option

Hi, just thought i'd share back to the group an option for plate mount that seems to work (i haven't been able to break it.. yet). I've been working on getting a plate mount fitted to a surfboard for strapless kite-foil, foil-surf and normal surf. The idea was to make a foil surfboard with two longb...
by mopman365
Wed Jul 19, 2017 6:06 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 2969

Re: Front Wing design and build1

Thanks! I'm getting one this afternoon. Workshop's starting to look like a coal mine from all the sanding.
by mopman365
Tue Jul 18, 2017 9:27 am
Forum: Hydrofoil Builders
Topic: Max wing thickness for ultra low takeoff
Replies: 23
Views: 1829

Re: Max wing thickness for ultra low takeoff

> Any reason in particular you'd chose e818, instead of say h105, for a low stall speed design? H105 has 12.5% Could not find H105 profiles on that site. You can also bump the printed thickness to 12.5% using the "Thickness (%)" on the plotter page. I used e818 (9.4%) instead of e817 (11%) because I...
by mopman365
Tue Jul 18, 2017 9:11 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 2969

Re: Front Wing design and build1

Very nice indeed. Guessing there's a bit of sanding required on the inside mating surfaces, especially the insides of the trailing edge, before joining the two halves? No I don't sand at all. Carbon dust is not good. What I do instead is scrap the carbon carefully back to part line with a tungsten ...
by mopman365
Tue Jul 18, 2017 6:31 am
Forum: Hydrofoil Builders
Topic: Max wing thickness for ultra low takeoff
Replies: 23
Views: 1829

Re: Max wing thickness for ultra low takeoff

I'd also rather sand a block of Corecell or plywood, but on the thickness, i'd say that depends on your wing's chord. Most are between 9 and 11% of the chord from what i've read (no expert). So if you go for a large 200mm chord wing, final thickness around 20mm. If shaping from plywood, you could sh...
by mopman365
Tue Jul 18, 2017 6:17 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 2969

Re: Front Wing design and build1

Very nice indeed. Guessing there's a bit of sanding required on the inside mating surfaces, especially the insides of the trailing edge, before joining the two halves?

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