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- Newsgroups: rec.windsurfing
- Path: sparky!uunet!cs.utexas.edu!torn!nott!bnrgate!bcars267!news
- From: heybc
- Subject: Re: Ice-boards
- Message-ID: <1993Jan22.195020.8195@bnr.ca>
- Sender: news@bnr.ca (usenet)
- Nntp-Posting-Host: 47.220.6.195
- Organization: Bell-Northern Research
- References: <1993Jan19.013539.26498@cs.rit.edu> <uh311ae.727724264@sunmanager>
- Date: Fri, 22 Jan 1993 19:50:20 GMT
- Lines: 42
-
- In article <uh311ae.727724264@sunmanager> uh311ae@sunmanager.LRZ-Muenchen.DE
- (Henrik Klagges) writes:
- >
- >IMHO, ice-boarding isn't terribly exciting, and more dangerous than
- >windsurfing itself anyway. If I'd go onto the ice at all, I'd use
- >one of the 'DN'-type ice skaters in which you ly (feet at the front,
- >helmet at the back). They are essentially ice catamarans with a steerable
- >front skater and can reach ridiculously high speeds (World record on a DN:
- >150+ km/h). I did it when I was living in the South of Germany, where the
- >winters get frigging cold, so that all the lakes freeze.
- >
- >DN's need very little wind to go very fast - you reach top speed already
- >at 5 Bft (with a sail extremely flattened), with survival difficult at 6.
- >The boat speed/wind speed ratio at force 4 is about 400% ...
- >
- >Cheers, Henrik
- Maybe you should try it before condemming it. It is fun. Wear a helemet,
- and hockey equipment. Don't go out in too much wind. Plan to travel
- 20-40knots on 15knots of wind. When you fall you slide a long ways. Don't
- sail where you can hit stationary objects. I almost hit a van while
- travelling 25knots or so because I fell when sailing offwind through an
- icefishing derby 'fleet of vehicles'. Beating you won't go more than
- the wind speed. Off the wind 2-4 times windspeed? Air drag is the limiting
- factor.
-
- My boards are best described as two downhill skiis attached to the
- bottom of an ironing board with an ice skate blade as a skeg.
- Cant the skis slightly so the outside edges contact the ice. A few degrees.
- they work on ice, and hardpacked snow, but the transistion from one to
- the other is a bit tricky as the center of latteral resistance moves.
- I'm planning to build an ice only board which is like a giant skateboard
- on 4 blades, for more downwind manuverability. A few friends who have
- icesurfed think I'm nuts for wanting more manuverability at 35knots of
- board speed.
-
- Note you'll be working with 30-45knots of apparent wind, so use a small flat
- sail
- PS: a few folks I know that sailed DNs and other iceboats have done 55-70MPH.
- Speed measured by timing known distance on the ice.
-
-
- Bill Crick
-