Search found 215 matches

by awallin
10 Dec 2003, 10:50
Forum: Class Rules
Topic: Deck Limit Mark
Replies: 14
Views: 20750

Here are a few deck marks copy-pasted from my Vancouver pictures <img src="http://www.physics.helsinki.fi/~awallin/files/Image10.jpg"> (two cockatoos, an italiko and a gadget.) I don't think anyone places the limit mark on the foredeck. If it's possible, people seem to place the mark on the centerli...
by awallin
08 Dec 2003, 22:49
Forum: General IOM
Topic: Arm Winch
Replies: 19
Views: 22737

Gyula Ferencz has told me about an old trick to increase arm winch torque to around 175% of rated amount! I'll be trying it in a couple of weeks, and here is the spreadsheet: http://www.onemetre.net/Download/Cam/Cam.htm hmm, interesting idea. A bit like the counterweight on a lift... Lester, If pos...
by awallin
03 Dec 2003, 08:59
Forum: General IOM
Topic: Cold weather storage
Replies: 4
Views: 6918

Re: cold weather storage

Thought this might be a good place to ask. Does it damage our fiberglass HULLs, or carbon since I’m asking, to store them in an area that is not heated during the winter. This is in the top of my shop, well protected from all elements other then our freezing winter temperatures. In Finland we hav...
by awallin
26 Nov 2003, 12:57
Forum: General IOM
Topic: Arm Winch
Replies: 19
Views: 22737

Re: Arm Winch

I have been wondering about the arm winch offered by Kbits. It is based on the Jumbo sized Hitec digital servo that puts out 19kg of torque. The question is, is so much torque actually required for an IOM and has anybody ever done some detailed research on the sheetingloads on our boats :shock: Che...
by awallin
25 Nov 2003, 12:40
Forum: General IOM
Topic: Downloadable Drawings
Replies: 4
Views: 7233

Downloadable Drawings

Charles Detriche has kindly allowed me to publish two of his IOM designs "Arrow" and "Sliver". :D They are available at: http://www.helsinki.fi/~awallin/iom/ These are scanned versions of the paper drawings. I intend to produce CAD drawings of at least the hulls when I have time. A hydrostatics anal...