Page 130 of 132

6 mR Sailing: Sinebrychoff Challenge

I was on the race committee when NJK organized the annual Sinebrychoff Challenge for 6 mR yachts just outside central Helsinki.

Continue reading

IOM Hull Hydrostatics

A bit of hydrostatics data for some hulls I happen to have in my CAD program.

2005 IOM Nordic Championships, Veddelev, Denmark

28 boats from three nordic countries(4 FIN, 8 NOR, and 16 DEN) gathered in Veddelev, just north of Roskilde, over the weekend of 11-12 June 2005 to sail for the Nordic Championships.
Continue reading

Simple Bulb Design

Since publishing the bulb mould plans there has been a couple of requests for a drawing of only the bulb. Here it is. It's a round cross section 350mm long NACA 0010-34 bulb.

I'm using a feature of Adobe Acrobat 6.0 to attach a DXF version to the PDF file. Open the PDF in acrobat reader and access the DXF by right-clicking on the paper-clip on the right and choose "save embedded file to disk".

Inside the DSM system

The DSM system by Spektrum RC ( is a new and exciting development.

I got my RF-module and receiver ahead of the radio that I have also ordered so I have time to inspect the DSM parts before trying them out...
Continue reading

Topfield PVR - inside view

The best thing since sliced bread ! A digital PVR really transforms the way in which you use your TV. If you have digital TV but don't own one of these yet then you are missing out big time !

Boxes with twin tuners for the terrestial network DVB-T were available for some time in Finland but it was only in the spring of 2005 when twin tuner DVB-C boxes became available. The Topfield 5100 was one of the first products on the market - and naturally I had to have it.

The functionality of the topfield can be extended with your own programs and there are large user communities at least in Australia, UK, and Germany.

Here I have taken a look inside the box and tried to describe the hardware. Some of the wilder hackers think it should be possible to run an entirely opensource software(VDR) on the box...

2005 Biophysical Society Meeting, Long Beach

Our group attended the 2005 Biophysical Society annual meeting in Long Beach, California.
Continue reading

CNC Milling of MDF Plug

Jari Immanen is making a plug for a Marblehead. This is our homebuilt CNC machine. It's an Opti BF20 retrofitted with steppermotors. Geckodrives drive the steppers using the TurboCNC software.
Continue reading

Laerke IOM by Søren Andresen

drawing in DXF format

Søren Andresen (DEN) sent me the plans for his own design with which he won the 2005 Nordic Championship and placed 2nd in 2004. He also sailed it into 35. place in the 2004 Euro Champs in Arcos/Spain.

The PDF file contains the sections and a drawing with the mast and keel positions but you should really download the DXF file and printout accurate sections with a CAD program if you want to build the boat.

Continue reading

Arm winch sheeting arrangement

Søren Andresen (DEN) uses this interesting arm winch setup on his boat.

The idea is that by attaching the jib and mainsheet at different points wrt. the block on the arm you can get unequal travel on the sheets. As shown here the mainsail can be adjusted virtually independently of the jib sheet when close hauled.

A number of people were interested in it at the Euros in Arcos so Søren has made a detailed drawing and kindly allowed me to publish it

© 2018

Theme by Anders NorénUp ↑