Jump to content


Raked aft \\

Member Since 11 Nov 2005
Offline Last Active Yesterday, 08:14 PM
-----

Posts I've Made

In Topic: Cool New Sailing Timer

16 July 2014 - 07:48 PM

Cap,

 

  Bottom line on dingy sailing is both hands (& fingers) are very busy, tiller in one sheet in another.  Your wrist is not that busy,  meaning you can be pulling a line hard, fully wrapped around your hand and fingers, and still bend your wrist in a way to look at a watch.  The sailing specific watches are also designed for the most part to be simple to operate,  one button push to start and cycle the countdown settings.  They also have large readout numbers.

 

  keep working on it though...


In Topic: Real World Anarchy - What Do You Do For Work?

16 July 2014 - 02:24 PM

P&C insurance broker.  specialize in marine exposures...


In Topic: Need help with a proper explanation... Boat speed vs. GPS speed

15 July 2014 - 02:42 PM

I'm a fan of the good ole depth sounder, cause both the speedo and gps are gonna read "0" when you're on the rocks...


In Topic: Rules question: when boats meet

14 July 2014 - 07:37 PM

Happens all the time.  there certainly is a fine line between tacking and being on starboard close hauled in the pre-start.

In most cases, the port boat tacking below will let their jib luff all the way through to close hauled course then head up to head to wind to stop the boats to weather.

 

 the question is whether the starboard boat has to alter course before the tacking boat has gotten around to close hauled.

 

 again it's pretty common practice on any line...


In Topic: va or nova? murnikov's latest mx...

08 July 2014 - 01:26 AM

rather than having the flaps "sink" the boat to make the boat think it has more displacement.  think about about ailerons on an aircraft.  when the ailerons on the wing work opposite of each other.  the  plane rolls

rc-airplane-ailerons.gif

If we did the same thing on this winged keel...  as the boat heels (rolls) over. use the ailerons on the wing of the keel to counteract the heel.  So as the boat heels to the leeward  youd want the windward wing to dig in and pull down and the leeward to create lift.  the question then is a matter of physics and a "lever"    could enough force down at the keel create enough roll to counteract the heel... but not enough drag to really slow the boat...

 

  I would say no.  difference between planes and boats is the whole double medium thing.  When you introduce additional drag in the H20 side, you need a huge amount of increase in positive lift in the air side just to stay even, let alone increase overall speed.

 

 I just don't see it with the whole rolling/lifting/sinking keel concepts generating additional lift over drag, or additional speed.

 

  As we saw with the AC72's  the big jumps in speed involved minimizing water drag, not increasing air horsepower.  they got rid of the genny's fir christ sake...