Comments on: Getting All Mothy Up In Here

By: David Valham

David Valham — Mon, 24 May 2010 08:06:35 +0000

Thanks for all the inspiriting words. Interesting thoughts about how to reduce drag.

It makes me glad that you feel that my work is good enough to use as an example in school.

Regards
David

By: mad sailor

mad sailor — Sat, 22 May 2010 04:28:37 +0000

Really gorgeous job, I’m using it on my 3d design class as an example of great professional work, including innovative concepts, a lot of research and a perfect design process, from sketches to 3d printed model.
As a sail-boat addict and a windsurfer without any tecnical knowledge, I think your horizontal wings will generate a lot of drag, so it will need much more power to work than a conventional moth. May be using larger an thinner wings, with a little lift-angle, like a glider or a bird fying close to water, I don’t know…

By: Latest new boat design news – Dragon Boat Racing【 It’s Free Now 】 – i use this on iphone

Sat, 06 Mar 2010 02:20:54 +0000

[...] New Moth by David Valham » Yanko Design [...]

By: JoySailFoilGlide

JoySailFoilGlide — Thu, 21 Jan 2010 22:42:22 +0000

Aloha David-san, “Very-Good” indeed Postively Go-Forward: Imua Ka Kou/ Ganbare Nei. Continue-On with your On-Fire Dreams and “given” Visions. You Da Man! Please try “talk-story with Bora Gulari , He Da Man to be your Test-Pilot-OK. GOD-Speed. Your’s for Joyfull Sailing/Foiling Expeiences. mahalo -n- aloha iruka-san.

By: david valham

david valham — Wed, 06 Jan 2010 12:46:38 +0000

Tank´s Doug.

Interesting reading the comments on my design. I love that you took my side in one of the comments, cheers!

I find all the points they are making true and very real but in between the lines I read that they think that I haven’t thought about them in my work…

That might be one of the big differences between designers and engineers, the later need to learn how to dream more. How to let a vision take form is not about all the limitations and don´ts, on the contrary, you need to embrace all the ideas and let them flourish. Not that I need to tell you that, but maybe some of the guys in the thread need to be reminded…

And by the way, turtleneck no, expensive glasses OH YES… BLACK ONES.

Have a good one Doug.

//D

By: Malcolm

Malcolm — Wed, 06 Jan 2010 12:16:41 +0000

pkmal at hotmail dot com

By: david valham

david valham — Wed, 06 Jan 2010 12:07:41 +0000

Yes I can if you give me your address.

By: Malcolm

Malcolm — Tue, 05 Jan 2010 23:45:12 +0000

David

I got it all wrong getting so excited about the beast. Any chance you can email me ?

By: david valham

david valham — Tue, 05 Jan 2010 16:52:54 +0000

Hmmm, maybe your right, but it´s worth a try don´t you think?

By: david valham

david valham — Tue, 05 Jan 2010 16:42:46 +0000

Tanks for the nice words JG.

I think the points you have make sense. It will be calculation of pros an cons considering things as drag, groundeffect, roll-stability, dihedral angle (greater balance) and so on. The lift from the wings might allow the foils to be smaller and reduce friction in the water on one hand, but on the other hand increase the aerodynamic drag. During my brief research I discovered a lot of other benefits with the wings as better balance in the boat, and a force that might help the pilot in acting as a counterweight for the sail.

About your last thought of dumping lift…You are absolutely right, but… would it not be cool if you could jump and fly a bit like a kitesurfer/windsurfer with the boat… I´d love that…

//D