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November 21, 2008

THE MAST CURED

Yrvinds 2.7 meter or 9 feet long mast came out of the autoclave well cured and in a perfect shape. Thank you everyone at Marström forall the help. Here it is the mastshop, being tested for strength by our strong man Mario. If it can survive his 150 kilo ( 330 pounds ) of muscles I dont think I have to worry in the Southern Ocean. Presently Im working on the masts three goosenecks. Besides the usual one for the boom my rotating mast has two on the leading edge as well. One for the supporting spar and one for the whisker pole. The goosenecks also serves as mast steps. I have no halyards as its easy to reach the mast top.

Its lot of fun to at Marström and there is always exciting projects going on. Due to rapid expension and many new orders we need plenty of more engeniers at least two right now. If any of my readers are familiar with the computers and the program “solid works” please apply for a job. For more details visit our webb page MARSTROM.COM mention my webb page.




November 18, 2008

IN THE MARSTRĂ–M AUTOKLAV

After nearly a week of putting the prepreg material in the mold; all the unidirectional, the 90 degrees and 45 degrees and the reinforcements is finally in place, as is the peelply and and vacumbag. Sam my master is checking for leeks.

Sam is satisfied. He assures me everything is going to be fine.

She is ready for the 35 meter long autoklav. With a 2.7 meter long mast I don’t feel I use its full potential.

Here we are getting up speed.

She is nearly in.

Thomas is closing the heavy lid.

and locking it.

Fredrik the Boss is chacking gouges and the tempratures of the inside surfaces of the mast the outside surface and the temperature of the compressed air inside the autoklav.

Finally I watch all the gauges while reading a yachting magazine. Everything worked perfectly, during the night she will cool under pressure in the autoklav and vacum in the bag and I will dream nice dreams. a big step forward has been taken.




November 14, 2008

WORKING ON THE SPARS

The picture above shows a model of the rig. Its a kind of biped. Two legs is stronger than one, they have wing sections to reduce wind resistance and make the sails more efficient. In heavy weather the sails will flap about less.
Also as the forward spar, the one supporting the jib in contrast to a wire can take compression the shrouds as seen on the model can therefore be placed forward of the mast allowing me to let out the boom about 135 degrees instead of the normal about 80 when sailing downwind. This helps to prevent jibes. With the boom forward if the mast the boat will travel downwind steady even in bad weather.

Below is a picture of me and my Master Sam teaching me how to cut prepreg.

Here we are with the mast mold. It is five meters long, long enough for the 2.7 meter mast and the 2.2 meter long forespar. This is my usual luck. Should I by chance run out of luck my philosophy is: it is better to have bad luck than no luck. Finally for those wishing to hear me speak in my native Swedish there are now, on this website under the heading “various” an audio file in two parts. Enjoy.




November 2, 2008

MAST & RUDDER

The picture below shows a second mock up of the rudder head with the rudder blade.

Below is a close up of a new and better line arrangement. Yrvind has no tiller. It saves weight and gives me more space on deck.

On passage I let the boat self steer with the help of feed back from the sheets. The lines from the sheets run in my case directly to the rudder. It is a simpler arrangement. An other advantage is that close to the coast it is handy not to be tied down to the tiller. With the steering lines I can walk around on the boats deck using them as remote controls. Whith the help of the steering lines I can in good weather stand on the fore deck looking at the bottom when navigating in shallow water. If I like to do that.

In the meantime the real rudder blade and the centerboard are being faired in Marströms mast shop. In the background two centerboard for the Volvo Ocean Race boats can be seen.

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More good news, Göran and Per has given go ahead with building my spars. Here Göran and I are with an experimental mast for my boat. It is a 2.7 meter long piece of an Ice boat mast. They are usually made of glass fiber. I consider doing the same. The disadvantage is that it is about two to three times as heavy. The good thing with glass fiber is that the mast will be extremely flexible, like a fishing rod, which is good considering capsizes and pitch poles. Also it will allow me to place an VHF antenna inside the for the AIS sponsored by TRUE HEADING. Inside the mast the antenna is protected from weather and it gives no wind resistance. I consider it to be essential to reduce all kinds of resistance as much as possible. On a small boat powered only by wind and muscles you have very limeted resorces and have to be as efficient as possible.

Next week 4 to 8 November I be in Stockholm giving a talk together with Thomas at ABF ( see under lectures ) Also I will be at the Stockholm boat show looking for sponsors. Therefore during that time no work will be done on the boat.




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