[Rhodes22-list] What Controls The Position Of The Boom On Older Standard Rig Boats?
Roger Pihlaja
rhodes22-list@rhodes22.org
Tue, 27 Aug 2002 16:09:17 -0400
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Toad,
Look on the sides of your mast near the back. You should see a series =
of holes about 1/8" ID going right thru both sides of the mast. These =
holes should pass right thru the track where the pop top slider runs as =
well as the mast bolt rope or sail slugs. When you purchased the boat, =
there should have been several stainless steel hairpin clips included, =
which fit thru these holes in the mast. Another common use for these =
hairpin clips is to retain the hitch pins on class 2 & 3 trailer =
hitches. If your boat did not come with them or they've been lost; =
then, any good RV dealer should have these hitch pins in assorted sizes. =
You want to purchase hitch pins made from 3/32" OD wire. =20
On Dynamic Equilibrium, one of these sets of holes is about 4" above the =
bottom of the mast. A hairpin clip thru this hole locks the pop top =
slider in the down position. There is another set of holes up the mast =
a couple of feet, which are used to lock the pop top slider in the up =
position. Finally, further up the mast, there are 4 sets of holes for =
the boom gooseneck. There are 2 hairpin clips for these 4 holes. To =
set the boom in the "lower" position, move the gooseneck slider in =
between the lower set of holes & install the hairpin clips. Similarly, =
the boom gooseneck is set between the upper two holes & retained there =
by the hairpin clips for operation at the "upper" position. In use, the =
mainsail is hoisted with the halyard. The halyard is tensioned until =
the boom gooseneck rises up against the top hairpin clip & then the =
halyard is cleated off. Then, the boom downhaul is used to apply the =
desired amount of luff tension. Due to stretching of the mainsail luff =
& main halyard, as luff tension is increased, the boom gooseneck will be =
pulled downward from its mechanical limit up against the top hairpin =
clip. Sufficient luff tension should be achieved before the boom =
gooseneck reaches its lower mechanical stop against the lower hair pin =
clip. If the boom gooseneck reaches the lower mechanical stop before =
the luff has sufficient tension, then the main halyard was not =
sufficiently tensioned before being cleated off or the mainsail is worn =
out. When the mainsail is lowered, the boom gooseneck will drop until =
it reaches the lower mechanical stop provided by the lower hairpin clip.
Hopefully this explanation helps, Toad. Good luck.
You asked whether 1/2" sail slugs or bolt ropes will work in a 7/16" =
slot. The answer is no, but you should measure then again. I bet they =
are really 7/16" inch.
Roger Pihlaja
S/V Dynamic Equilibrium
=20
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<DIV><FONT face=3DArial size=3D2>Toad,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Look on the sides of your mast near the =
back. =20
You should see a series of holes about 1/8" ID going right thru both =
sides of=20
the mast. These holes should pass right thru the track where the =
pop top=20
slider runs as well as the mast bolt rope or sail slugs. When you=20
purchased the boat, there should have been several stainless steel =
hairpin clips=20
included, which fit thru these holes in the mast. Another common =
use for=20
these hairpin clips is to retain the hitch pins on class 2 & 3 =
trailer=20
hitches. If your boat did not come with them or they've been lost; =
then,=20
any good RV dealer should have these hitch pins in assorted sizes. =
You=20
want to purchase hitch pins made from 3/32" OD =
wire. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>On Dynamic Equilibrium, one of these =
sets=20
of holes is about 4" above the bottom of the mast. A hairpin =
clip=20
thru this hole locks the pop top slider in the down position. =
There is=20
another set of holes up the mast a couple of feet, which are =
used to=20
lock the pop top slider in the up position. Finally, further up =
the mast,=20
there are 4 sets of holes for the boom gooseneck. There are 2 =
hairpin=20
clips for these 4 holes. To set the boom in the "lower" =
position,=20
move the gooseneck slider in between the lower set of holes & =
install the=20
hairpin clips. Similarly, the boom gooseneck is set between =
the upper=20
two holes & retained there by the hairpin clips for operation =
at the=20
"upper" position. In use, the mainsail is hoisted with the =
halyard. =20
The halyard is tensioned until the boom gooseneck rises up against the =
top=20
hairpin clip & then the halyard is cleated off. Then, the boom =
downhaul is used to apply the desired amount of luff tension. Due=20
to stretching of the mainsail luff & main halyard, as luff =
tension is=20
increased, the boom gooseneck will be pulled downward from its =
mechanical=20
limit up against the top hairpin clip. Sufficient luff =
tension should=20
be achieved before the boom gooseneck reaches its lower mechanical stop =
against=20
the lower hair pin clip. If the boom gooseneck reaches the lower=20
mechanical stop before the luff has sufficient tension, then the main =
halyard=20
was not sufficiently tensioned before being cleated off or the mainsail =
is worn=20
out. When the mainsail is lowered, the boom gooseneck will drop =
until=20
it reaches the lower mechanical stop provided by the lower hairpin=20
clip.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Hopefully this explanation helps, =
Toad. Good=20
luck.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>You asked whether 1/2" sail slugs or =
bolt ropes=20
will work in a 7/16" slot. The answer is no, but you should =
measure then=20
again. I bet they are really 7/16" inch.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Roger Pihlaja</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>S/V Dynamic Equilibrium</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial=20
size=3D2> =20
</FONT></DIV></BODY></HTML>
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