Hydrofoils 2012 update

Mahalo,
I was asked from different sides to update the situation on the
current hydrofoil work. In the past this work have not priority
on my list, but was moved time to time!
Well here we go! The new underwater wings was laminated,
cured, and come out of the mold successful!
Afterwards the trimmed, cleaned and gap for vertical was open.
The horizontal foil will be screwed on vertical with M8, this make
good opportunity to adjust the AOA and general angle of the
moth to the water surface.
Work to do, cut the flaps, make the steering mechanisms and and....
Looking forward to have this finished in time to enjoy the wind and water!

Stay tuned!
dr.Lojz

Moth hydrofoil 2011

Mahalo,
again long time from my last writing on the Blog, standard reason is too busy on different projects running in my life and work. But thing going on step by step, fist of all Moth will get new hydrofoil, the original was last summer twice broken, it is still sailable but bad performance. I start to design new one over the winter and it was on the CNC machine for the first cut.

I will write more regarding design construction in next posts,
here and now just some shots of making off!

Autumn Glory

Once it was a wish and the wish become reality!
The goal was to have the Autumn Glory
violin ready to play before Christmas!

Two days ago the new violin give the play, it is wonderful feeling after all
the work to hear instrument at work! Again prof. Tomaz Pinter
help me with the experience of master. Violin have, before the sound post was positioning,
really big troubles with "E" string oscillation. So strange and ugly tone, unbelievable!
After the sound post was insert the oscillation disappear in 90%,
it is still there at the hi tones but looking what it was is perfect!

Here it is, the Autumn Glory of itself.
The redwood hybrid plank mixed with carbon fiber and honeycomb sandwich,
the carbon wall and the "standard" scroll! Maple neck and ebony fingerboard!

The sound check was done at hook no preparation, really from the heart, enjoy!

Infusion composite

Mahalo,
lets go step by step on technological procedure on the new race board
designed on my side. True weary complex construction of outside
fins on this board the end decision was to use the infusion technology
to get the ruff plate of GFK. The simply mold of Styrofoam was made
and in next steps the 12lyers of glass-fiber was lay down on the
positive mold surface. Vacuum bag all around with inlay tube for
epoxy, on the other side the air out. Less then 1h the resin was come
true all the laminates. Slow flow of the resin true the 7mm of glass fibre.

Front view of the fins block material

And once again the flow of the resin true the GFK, like a miracle!
The middle fin material was prepared on the same technology,
only the "mold" was plain table!

It was quite hard work afterward to get the fins in right shape,
but they are looks great when are mounted on the board.