[Rhodes22-list] Mast Bending & PHRF Rating

R.G. Smith rhodes22-list@rhodes22.org
Sun, 25 Aug 2002 21:16:24 -0400


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  < Have them put in a grommet just below the top slug for your
downhaul.  Halfway down the sail have them sew on a tab with a ring
which will be parallel to the deck.  This keeps your downhaul a lady.
It is called a Kuhn ring after its inventor.  The downhaul passes thru
the Kuhn ring on its way to the block at the foot of the mast. >
 
Is a downhaul at the head a necessity?  I am not thrilled at this
prospect. 
 
 < The top two battens [which give the sail the big roach] are parallel
to the deck, just as the full battens were.  They are normal flat
battens, but they terminate about 5" from the luff.  They cause no major
compression, therefore the sail comes down easily. >
 
How smooth is the camber of the sail with the non full length battens?.
I would think there would be a break in the curve right at the front of
the batten pocket.  It seems to me that most boats with small mainsails
have this problem around the top batten. My present sail does.   Thats
the reason I want to go to full length towards the head.
 
Briefly, I have a triple block attached to a bail welded to the
tabernacle.  These blocks accommodate three lines which are lead to a
triple deck organizer, then to a triple rope clutch at the cockpit.  The
lines from fore to aft on the triple block are the main halyard, the
downhaul and the single reefing line.
 
Yes... I can visualize your system.  Whats the purchase on the down
haul?
 
Richard Smith


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<DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT>&nbsp;</DIV>
<BLOCKQUOTE style=3D"MARGIN-RIGHT: 0px">
  <DIV></DIV>
  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft>&nbsp;<SPAN=20
  class=3D176170801-26082002><FONT face=3DArial color=3D#0000ff=20
  size=3D2>&nbsp;&lt;&nbsp;</FONT></SPAN>Have them put in a grommet just =
below the=20
  top slug for your downhaul.&nbsp; Halfway down the sail have them sew =
on a tab=20
  with a ring which will be parallel to the deck.&nbsp; This keeps your =
downhaul=20
  a lady.&nbsp; It is called a Kuhn ring after its inventor.&nbsp; The =
downhaul=20
  passes thru the Kuhn ring on its way to the block at the foot of the=20
  mast.<SPAN class=3D176170801-26082002><FONT face=3DArial =
color=3D#0000ff=20
  size=3D2>&nbsp;&gt;</FONT></SPAN></DIV>
  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><SPAN=20
  class=3D176170801-26082002></SPAN>&nbsp;</DIV>
  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><SPAN=20
  class=3D176170801-26082002><FONT face=3DArial color=3D#0000ff =
size=3D2>Is a downhaul=20
  at the head a necessity?&nbsp; I am not&nbsp;thrilled at this=20
  prospect.</FONT>&nbsp;</SPAN></DIV>
  <DIV>&nbsp;</DIV>
  <DIV><SPAN class=3D176170801-26082002><FONT face=3DArial =
color=3D#0000ff=20
  size=3D2>&nbsp;&lt;&nbsp;</FONT></SPAN>The top two battens [which give =
the sail=20
  the big roach] are parallel&nbsp; to the deck, just as the full =
battens=20
  were.&nbsp; They are normal flat battens, but they terminate about 5" =
from the=20
  luff.&nbsp; They cause no major compression, therefore the sail comes =
down=20
  easily.<SPAN class=3D176170801-26082002><FONT face=3DArial =
color=3D#0000ff=20
  size=3D2>&nbsp;&gt;</FONT></SPAN></DIV>
  <DIV><SPAN class=3D176170801-26082002></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D176170801-26082002><FONT face=3DArial =
color=3D#0000ff size=3D2>How=20
  smooth is the camber of the sail with the non full length =
battens?.&nbsp; I=20
  would think there would be a break in the curve right at the front of =
the=20
  batten pocket.&nbsp; It seems to me that most boats with small =
mainsails have=20
  this problem around the top batten. My present sail=20
  does.</FONT>&nbsp;</SPAN><FONT face=3DArial><FONT =
color=3D#0000ff><FONT=20
  size=3D2>&nbsp;<SPAN class=3D176170801-26082002>&nbsp;Thats the reason =
I want to=20
  go to full length towards the head.</SPAN></FONT></FONT></FONT></DIV>
  <DIV><FONT face=3DArial><FONT color=3D#0000ff><FONT size=3D2><SPAN=20
  class=3D176170801-26082002>&nbsp;</SPAN></FONT></FONT></FONT></DIV>
  <DIV>Briefly, I have a triple block attached to a bail welded to the=20
  tabernacle.&nbsp; These blocks accommodate three lines which are lead =
to a=20
  triple deck organizer, then to a triple rope clutch at the =
cockpit.&nbsp; The=20
  lines from fore to aft on the triple block are the main halyard, the =
downhaul=20
  and the single reefing line.</DIV>
  <DIV><FONT face=3DArial color=3D#0000ff size=3D2></FONT>&nbsp;</DIV>
  <DIV><SPAN class=3D176170801-26082002><FONT face=3DArial =
color=3D#0000ff=20
  size=3D2>Yes... I can visualize your system.&nbsp; Whats the purchase =
on the=20
  down haul?</FONT></SPAN></DIV>
  <DIV><SPAN class=3D176170801-26082002><FONT face=3DArial =
color=3D#0000ff=20
  size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D176170801-26082002><FONT face=3DArial =
color=3D#0000ff=20
  size=3D2>Richard Smith</FONT></SPAN></DIV></BLOCKQUOTE></BODY></HTML>

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