Cruising Sailors Forum Archive

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• How much force can a stalled prop generate?
  • Check out Dave Gerr's propeller handbook.
    • Thanks. The numbers are interesting
      • The relationship for wind loads is pretty simple...
        • Are all the lengths riggng diameter etc in metres? If not, what are the units?
          • Yes, all in meters
        • I worked the numbers for our 47 footer and
          • Since the only variable is V
            • The only variables for one particular boat are
          • Jib and shrouds 33% of total. Good reason not to have them!
          • I wanted to make a giant fish scale kind of gadget.
            • Its a "dynamometer", Dillon is the best known brand...
              • WOW! $1,000.00
                • A few on eBay for $300-400....
              • Yeah, havign a dynamometer would be interesting
                • Here's the link to Dillon:
                  • Here's a used Ed Junior 5K for $500: