[frers-list]Rig tensions

Wed, 1 Oct 2014 11:04:25 -0400

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Hi Mike:

Sounds like you'll be racing your boat, always good to hear. I also came =
from a J-boat and I think you'll find the Frers mast is actually easier =
to tune. We got the forestay length and rake from the tuning guide and =
centered the mast before blocking. Then the shrouds were just a matter =
of sighting up the mast while under sail. First we tension the uppers a =
few turns with a wrench after hand tight. Then I work down, keeping the =
mast in column at the dock keeping the intermediates and lowers both a =
bit looser than the uppers. The goal is tight enough that the leeward =
upper does not go particularly slack in moderate breeze. I don't see any =
value in more tension than that. Because the shrouds are not swept back =
by more than an few inches, you are not controlling fore and aft mast =
bend with them. So it's really just a matter of going for a sail and =
making some adjustments to keep it straight under load. I sight with =
mast straight - minimal backstay and runner on so it is easier to judge =
if the mast is, hooking, falling off or just bending in column. I =
haven't seen the need for a Loos gauge. Finally if the breeze is really =
on we might take two turns on the headstay and one extra turn on the =
uppers before a race.=20

Does anybody take a more scientific approach than we do?

Edgar Smith
Pachyderm

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<html><head></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi =
Mike:<div><br></div><div>Sounds like you'll be racing your boat, always =
good to hear. I also came from a J-boat and I think you'll find the =
Frers mast is actually easier to tune. We got the forestay length and =
rake from the tuning guide and centered the mast before blocking. Then =
the shrouds were just a matter of sighting up the mast while under sail. =
First we tension the uppers a few turns with a wrench after hand =
tight.&nbsp;Then I work down, keeping the mast in column at the dock =
keeping the intermediates and lowers both a bit looser than the =
uppers.&nbsp;The goal is tight enough that the leeward upper does not go =
particularly slack in moderate breeze. I don't see any value in more =
tension than that. Because the shrouds are not swept back by more than =
an few inches, you are not controlling fore and aft mast bend with them. =
So it's really just a matter of going for a sail and making some =
adjustments to keep it straight under load. I sight with mast straight - =
minimal backstay and runner on so it is easier to judge if the mast is, =
hooking, falling off or just bending in column. I haven't seen the need =
for a Loos gauge. Finally if the breeze is really on we might take two =
turns on the headstay and one extra turn on the uppers before a =
race.&nbsp;</div><div><br></div><div>Does anybody take a more scientific =
approach than we do?</div><div><br></div><div><br><div>
<span class=3D"Apple-style-span" style=3D"border-collapse: separate; =
color: rgb(0, 0, 0); font-family: Verdana; font-style: normal; =
font-variant: normal; font-weight: normal; letter-spacing: normal; =
line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: =
0px; text-transform: none; white-space: normal; widows: 2; word-spacing: =
0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; font-size: medium; ">Edgar =
Smith</span></div><div><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Verdana; font-style: normal; font-variant: normal; font-weight: normal; =
letter-spacing: normal; line-height: normal; orphans: 2; text-align: =
-webkit-auto; text-indent: 0px; text-transform: none; white-space: =
normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: =
0px; -webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; font-size: medium; =
">Pachyderm<br></span></div></div></body></html>=

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