[C38] Symetrical Spinnakers
Joseph Launie
jlaunie at cox.net
Mon Aug 6 22:38:43 EDT 2012
thanks - I think you just went past my grade level Joe
On 8/6/2012 11:29 AM, les wrote:
> Hi, guys and gals,
> Just wanted to add an old Navy guy's input...
>
> The PL259 connectors are two parts, the screw down shell, and the
> casing with the insulator and center conductor. Remove the shell and
> slide it down the coax. I sometimes use a bit of tape or tie a string
> around the coax to make sure it keeps out of the way of my soldering.
> Measure the coax back about 3/4" and cut away the insulation and braid
> and then remove the insulation from the center conductor. Remove about
> 1/2" of the outer insulation, leaving the braid intact. Carefully
> thread the braid into the connector and make sure the center conductor
> protrudes from the center pin of the connector. Check to see that you
> can see the braid inside the holes of the outer portion of the
> connector. Solder the center conductor. Carefully solder the shield
> (the braid) in each of the holes. They are spaced so that all the wires
> in the braid will be held by solder.
>
> Make sure the joint is shiny. A dull look to the solder means it is
> not well done and will probably have flux still embedded in the solder.
> But be careful not to overheat the coax, as the neoprene will swell and
> change dimension if too hot. Buy a couple of extra connectors and a
> foot or two of coax and practice first before tackling the good stuff if
> this is your first attempt. Use a soldering iron on the center cable,
> about 25 or 30 watts. You can use a soldering gun if you are careful on
> the insulation.
>
> After soldering, clean the connector very well. In the past you could
> use alcohol, but some fluxes today will not dissolve in alcohol, so read
> the solder and check the manufacturers spec for cleaning.
>
> If you do not use the connection right away, clean it again before
> installation. This second cleaning can be alcohol.
>
> Install the connector. If using a barrel connector, install both
> cables, Use a bit of silicon to seal the area where the insulation meets
> the connector. Using self sealing tape, start about 1-2" up the cable
> from the connector, and wrap smoothly stretching the wrap as you go.
> The stretch breaks microcapsuls in the tape and causes the self healing
> attachment of the sealing tape. Wrap to 1-2" beyond the second
> connector on the second coax. A connection made this way will last up
> to 5 years in tropical conditions. Longer in the US.
>
> Sealing the cable is mandatory if it is to work well at radar
> frequencies. The cable is typically air insulated, using a sort of
> neoprene tube with a spiral of neoprene around the wire to support it in
> the tube to improve its characteristics. If it is not sealed moisture
> will get in and reduce the range of the radar to next to nothing.
>
> This is not rocket science, but attention to detail will provide the
> best results.
>
> Regards,
> Les H
>
> On Fri, 2012-08-03 at 16:05 -0400, tdtron at earthlink.net wrote:
>> Hello Joe,
>>
>> You don't have to spice the coax. Depending on the type of coax,
>> there are couplers and barrel connectors to match. For instance, on
>> RG58 or similar coax cables, you put a PL259 on each side of the cut
>> and then connect both connectors to a female barrel connector which
>> may be a SO238. I am working on memory here but any ham radio store
>> should be able to help you if you identify the coax.
>>
>> Installing solder type PL259 connectors is a pain but don't be tempted
>> to use the solderless type, they invite trouble on boats.
>>
>> They should also offer sealing putty also to wrap the connection for a
>> water tight connection. Even a well wrapped connection using quality
>> electrical tape will work. I often use WD40 on the actual connectors
>> before I connect them and then clean the outsides for a good bond with
>> either the putty or tape.
>>
>> This is more difficult than a conventional splice but using these
>> connectors allows easy removal in the future if needed and also keeps
>> the inductance of the cable uniform for best conductivity and minimum
>> loss at the high frequencies of radar.
>>
>> Tom Troncalli
>>
>>
>>
>> ----- Original Message -----
>> From: Joseph Launie
>> To: listserve at catalina38.org
>> Sent: 8/3/2012 3:23:01 PM
>> Subject: Re: [C38] Symetrical Spinnakers
>>
>>
>> Tom,
>> Thank you - I like the idea of shimming to a smaller
>> diameter aluminium post since mine is stainless. It would be
>> very difficult to unthread the co-ax so I wonder if I can cut
>> and splice it - voids waranty but that is long gone anyway.
>> Joe
>> On 8/3/2012 7:18 AM, tdtron at earthlink.net wrote:
>>
>> > Hello Joe,
>> >
>> > What is the Inside diameter 6' post? If you can find out
>> > that dimension and locate a piece of similar material but
>> > smaller with an outside diameter of the inside diameter of
>> > the standing 6' post, you could easily telescope the two
>> > pieces together making the post mount any height you want.
>> >
>> > As you know, the strains are less higher up the post vs. the
>> > lower section so you will not lose any strength by using a
>> > smaller diameter post extension and your wind resistance
>> > will be less also than a uniform diameter post to the new
>> > height.
>> >
>> > I have made similar projects and finding exact size tubes
>> > that have telescoping dimension properties is often
>> > difficult but the radio industry has sources for telescoping
>> > materials. If your existing post does not have a
>> > corresponding smaller post material that is compatible, you
>> > can shim the smaller post with something like plastic tape
>> > (not duct tape) to take out the dimensional differences if
>> > they are small. I have also used the shim method to
>> > transition from steel to aluminum with good results since
>> > the materials are isolated by the dielectric qualities of
>> > the plastic tape. Any ham radio outlet should be able
>> > to give you resources to find the materials you need to make
>> > a post extension. This is a regular problem with building
>> > radio antennas and towers.
>> >
>> > If this procedure of using an inside post to modify the
>> > height of your existing post will work for you, you may be
>> > able to leave the existing post mounted to your boat which
>> > will save a lot of time.
>> >
>> > I wish you were closer to me so I could help you with this
>> > project. I have a fairly complete weld shop and machine
>> > shop so that I can still practice my abilities of being a
>> > technical blue collar nerd wannabe.
>> >
>> > Good luck,
>> > Tom Troncalli
>> >
>> >
>> >
>> >
>> >
>> > ----- Original Message -----
>> > From: Joseph Launie
>> > To: listserve at catalina38.org
>> > Sent: 8/3/2012 3:01:36 AM
>> > Subject: Re: [C38] Symetrical Spinnakers
>> >
>> >
>> > Steve,
>> > Thanks - now how do I go from a 6 foot post to a
>> > 10 foot one? I have lots of xtra cable. I guess I
>> > have to discard this one and build the ten foot out
>> > of aluminum. It would be way easier if I could cut
>> > the co-ax. Joe
>> > On 8/2/2012 10:22 PM, Steve Smolinske wrote:
>> >
>> > > Joe,
>> > >
>> > > When I did my post I did the calculations so that
>> > > the bowman assuming he is six feet tall would be
>> > > missed by the beam, our post is 10 tall and
>> > > mounted so the base is where the fuel line vent
>> > > use to be. If I remember correctly the angle off
>> > > the the radome for the beam is 2-2.5 degrees
>> > >
>> > > Steve
>> > >
>> > > From: listserve-bounces at catalina38.org
>> > > [mailto:listserve-bounces at catalina38.org] On
>> > > Behalf Of Joseph Launie
>> > > Sent: Tuesday, July 31, 2012 10:14 AM
>> > > To: listserve at catalina38.org
>> > > Subject: Re: [C38] Symetrical Spinnakers
>> > >
>> > >
>> > > we have another rigging issue.We let the idiot
>> > > "rigger" for the local J boat dealer install our
>> > > radar. He put it on a post 6 feet above the deck.
>> > > We are afraid to use it for fear of radiation
>> > > damage. Any thoughts? Joe
>> > >
>> > > On 7/31/2012 9:39 AM, William Knowles wrote:
>> > >
>> > >
>> > > Jay are you using the external spin block
>> > > or an internal one say your spare jib
>> > > haylard, that could be a problem.
>> > >
>> > >
>> > > Bill
>> > >
>> > > On Tue, Jul 31, 2012 at 11:24 AM, Donald
>> > > Strong <drstrong at ucdavis.edu> wrote:
>> > >
>> > >
>> > > Jay: I feel for you man. We have had lots
>> > > of spinny drama. We always roller furl the
>> > > jib when flying
>> > > spinnaker. The rest of your questions are
>> > > beyond my experience.
>> > > Don
>> > >
>> > > >
>> > > > ------_=_NextPart_002_01CD6EB3.1776DEB4
>> > > > Content-Type: text/plain;
>> > > > charset="us-ascii"
>> > > > Content-Transfer-Encoding:
>> > > quoted-printable
>> > > >
>> > > > Hello All,
>> > > >
>> > > >
>> > > >
>> > > > We flew our 0.75 oz spinnaker for the
>> > > first time yesterday during a
>> > > > family sail and have a couple of
>> > > questions for the group.
>> > > >
>> > > >
>> > > >
>> > > > 1. During the douse
>> > > the spin halyard got stuck and
>> > > > appeared to be caught on the roller
>> > > furling gear near the masthead. Is
>> > > > this common? Also, is it normal to
>> > > roller furl the jib when using a
>> > > > symmetrical chute or do you really need
>> > > to drop it on deck? I race on a
>> > > > Serendipity 43 and Swan 51 with a deck
>> > > sweeper jibs that are dropped
>> > > > when flying a chute, and on a J-105 that
>> > > rolls the jib while flying an
>> > > > asymmetrical, so having a roller furler
>> > > and a symmetrical chute is new
>> > > > to us.
>> > > >
>> > > > 2. While working to
>> > > get the chute down we added a few
>> > > > new tears to the many that were there
>> > > previously so was going to put out
>> > > > a call to anyone who might have a used
>> > > symmetrical spinnaker(s)
>> > > > (0.5-0.75oz) laying around that they are
>> > > not using. Will pay a
>> > > > reasonable price plus shipping!
>> > > >
>> > > > 3. And lastly, does
>> > > anyone who uses very light
>> > > > spinnaker sheets in light air have a
>> > > preference for light weight
>> > > > shackles. The plastic Lewmar ones we
>> > > use on the Serendipity tend to
>> > > > open up under load and I thought one of
>> > > you may have a preferable
>> > > > option?? &n! bsp;Or maybe we'll just tie
>> > > on light line!
>> > > >
>> > > >
>> > > >
>> > > > Thanks much!
>> > > >
>> > > >
>> > > >
>> > > > Jay & Dorothy Sorensen
>> > > >
>> > > > C-38 #311 Broad Reach
>> > > >
>> > > > San Diego, CA
>> > > >
>> > > >
>> > > >
>> > > >
>> > > > ------_=_NextPart_002_01CD6EB3.1776DEB4
>> > > > Content-Type: text/html;
>> > > > charset="us-ascii"
>> > > > Content-Transfer-Encoding:
>> > > quoted-printable
>> > > >
>> > > > <html
>> > > xmlns:o="urn:schemas-microsoft-com:office:office"
>> > > >
>> > > xmlns:w="urn:schemas-microsoft-com:office:word"
>> > > >
>> > > xmlns:st1="urn:schemas-microsoft-com:office:smarttags"
>> > > > xmlns="http://www.w3.org/TR/REC-html40">
>> > > >
>> > > > <head>
>> > > > <meta http-equiv=Content-Type
>> > > content="text/html; <meta name=Generator
>> > > content="Microsoft Word 11 (filtered
>> > > medium)">
>> > > > <o:SmartTagType
>> > > >
>> > > namespaceuri="urn:schemas-microsoft-com:office:smarttags"
>> > > > name="State"/>
>> > > > <o:SmartTagType
>> > > >
>> > > namespaceuri="urn:schemas-microsoft-com:office:smarttags"
>> > > > name="City"/>
>> > > > <o:SmartTagType
>> > > >
>> > > namespaceuri="urn:schemas-microsoft-com:office:smarttags"
>> > > > name="place"/>
>> > > > <!--[if !mso]>
>> > > > <style>
>> > > > st1\:*{behavior:url(#default#ieooui) }
>> > > > </style>
>> > > > <![endif]-->
>> > > > <style>
>> > > > <!--
>> > > > /* Style Definitions */
>> > > > p.MsoNormal, li.MsoNormal,
>> > > div.MsoNormal
>> > > > {margin:0in;
>> > > > margin-bottom:.0001pt;
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>> > > > font-family:"Times New Roman";}
>> > > > a:link, span.MsoHyperlink
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>> > > > text-decoration:underline;}
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>> > > > span.EmailStyle17
>> > > > {mso-style-type:personal-compose;
>> > > > font-family:Arial;
>> > > > color:windowtext;}
>> > > > @page Section1
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>> > > > margin:1.0in 1.25in 1.0in 1.25in;}
>> > > > div.Section1
>> > > > {page:Section1;}
>> > > > /* List Definitions */
>> > > > @list l0
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>> > > 2092834830 67698713 67698715 67698703
>> > > > 67698713 67698715 67698703 67698713
>> > > 67698715;}
>> > > > @list l0:level1
>> > > > {mso-level-tab-stop:.75in;
>> > > > mso-level-number-position:left;
>> > > > margin-left:.75in;
>> > > > text-indent:-.5in;}
>> > > > ol
>> > > > {margin-bottom:0in;}
>> > > > ul
>> > > > {margin-bottom:0in;}
>> > > > -->
>> > > > </style>
>> > > >
>> > > > </head>
>> > > >
>> > > > <body lang=EN-US link=blue vlink=purple>
>> > > >
>> > > > <div class=Section1>
>> > > >
>> > > > <p class=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size:10.0pt;
>> > > > font-family:Arial'>Hello
>> > > All,<o:p></o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size:10.0pt;
>> > > >
>> > > font-family:Arial'><o:p> </o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size:10.0pt;
>> > > > font-family:Arial'>We flew our 0.75 oz
>> > > spinnaker for the first time
>> > > > yesterday
>> > > > during a family sail and have a couple
>> > > of questions for the
>> > > > group.<o:p></o:p></span></font></p>
>> > > >
>> > > > <p c! lass=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size:10.0pt;
>> > > >
>> > > font-family:Arial'><o:p> </o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal
>> > > >
>> > > style='margin-left:.75in;text-indent:-.5in;mso-list:l0 level1
>> > > > lfo1'><![if !supportLists]><font
>> > > > size=2 face=Arial><span
>> > > >
>> > > style='font-size:10.0pt;font-family:Arial'><span
>> > > > style='mso-list:Ignore'>1.<font size=1
>> > > face="Times New Roman"><span
>> > > > style='font:7.0pt "Times New
>> > > > Roman"'>
>> > > >
>> > > </span></font></span></span></font><![endif]><font
>> > > > size=2 face=Arial><span
>> > > >
>> > > style='font-size:10.0pt;font-family:Arial'>During the douse the spin
>> > > > halyard
>> > > > got stuck and appeared to be caught on
>> > > the roller furling gear near the
>> > > > masthead. Is this common? Also, is it
>> > > normal to roller furl
>> > > > the jib
>> > > > when using a symmetrical chute or do you
>> > > really need to drop it on deck?
>> > > > I
>> > > > race on a Serendipity 43 and Swan 51
>> > > with a deck sweeper jibs that are
>> > > > dropped
>> > > > when flying a chute, and on a J-105 that
>> > > rolls the jib while flying an
>> > > > asymmetrical, so having a roller furler
>> > > and a symmetrical chute is new to
>> > > > us.<o:p></o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal
>> > > >
>> > > style='margin-left:.75in;text-indent:-.5in;mso-list:l0 level1
>> > > > lfo1'><![if !supportLists]><font
>> > > > size=2 face=Arial><span
>> > > >
>> > > style='font-size:10.0pt;font-family:Arial'><span
>> > > > style='mso-list:Ignore'>2.<font size=1
>> > > face="Times New Roman"><span
>> > > > style='font:7.0pt "Times New
>> > > > Roman"'> !
>> > > >
>> > > </span></font></span></span></font><![endif]><font
>> > > > size=2 face=Arial><span
>> > > >
>> > > style='font-size:10.0pt;font-family:Arial'>While working to get the chute
>> > > > down
>> > > > we added a few new tears to the many
>> > > that were there previously so was
>> > > > going to
>> > > > put out a call to anyone who might have
>> > > a used symmetrical spinnaker(s)
>> > > > (0.5-0.75oz) laying around that they are
>> > > not using. Will pay a
>> > > > reasonable
>> > > > price plus
>> > > shipping!<o:p></o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal
>> > > >
>> > > style='margin-left:.75in;text-indent:-.5in;mso-list:l0 level1
>> > > > lfo1'><![if !supportLists]><font
>> > > > size=2 face=Arial><span
>> > > >
>> > > style='font-size:10.0pt;font-family:Arial'><span
>> > > > style='mso-list:Ignore'>3.<font size=1
>> > > face="Times New Roman"><span
>> > > > style='font:7.0pt "Times New
>> > > > Roman"'>
>> > > >
>> > > </span></font></span></span></font><![endif]><font
>> > > > size=2 face=Arial><span
>> > > >
>> > > style='font-size:10.0pt;font-family:Arial'>And lastly, does anyone who
>> > > > uses
>> > > > very light spinnaker sheets in light air
>> > > have a preference for light
>> > > > weight
>> > > > shackles. The plastic Lewmar ones we
>> > > use on the Serendipity tend to
>> > > > open
>> > > > up under load and I thought one of you
>> > > may have a preferable
>> > > > option?? Or
>> > > > maybe well just tie on light
>> > > > line!<o:p></o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size:10.0pt;
>> > > >
>> > > font-family:Arial'><o:p> </o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size! :10.0pt;
>> > > > font-family:Arial'>Thanks
>> > > > much!<o:p></o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size:10.0pt;
>> > > >
>> > > font-family:Arial'><o:p> </o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size:10.0pt;
>> > > > font-family:Arial'>Jay & Dorothy
>> > > > Sorensen<o:p></o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal><font size=2
>> > > face=Arial><span
>> > > > style='font-size:10.0pt;
>> > > > font-family:Arial'>C-38 #311 Broad
>> > > > Reach<o:p></o:p></span></font></p>
>> > > >
>> > > > <p class=MsoNormal><st1:place
>> > > w:st="on"><st1:City
>> > > > w:st="on"><font size=2
>> > > > face=Arial><span
>> > > style='font-size:10.0pt;font-family:Arial'>San
>> > > > Diego</span></font></st1:City><font
>> > > > size=2 face=Arial><span
>> > > style='font-size:10.0pt;font-family:Arial'>,
>> > > > <st1:State
>> > > >
>> > > >
>> > > w:st="on">CA</st1:State></span></font></st1:place><o:p></o:p></p>
>> > > >
>> > > > <p class=MsoNormal><font size=3
>> > > face="Times New Roman"><span
>> > > > style='font-size:
>> > > > 12.0pt'><o:p> </o:p></span></font></p>
>> > > >
>> > > > </div>
>> > > >
>> > > > </body>
>> > > >
>> > > > </html>
>> > > >
>> > > >
>> > > ------_=_NextPart_002_01CD6EB3.1776DEB4--
>> > > >
>> > >
>> > >
>> > > _______________________________________________
>> > > Listserve mailing list
>> > > Listserve at catalina38.org
>> > > http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>> > >
>> > >
>> > >
>> > >
>> > > --
>> > > W H Knowles
>> > >
>> > >
>> > >
>> > >
>> > >
>> > > _______________________________________________
>> > > Listserve mailing list
>> > > Listserve at catalina38.org
>> > > http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>> > >
>> > >
>> > >
>> > > _______________________________________________
>> > > Listserve mailing list
>> > > Listserve at catalina38.org
>> > > http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>> >
>> >
>> >
>> >
>> > _______________________________________________
>> > Listserve mailing list
>> > Listserve at catalina38.org
>> > http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>>
>>
>> _______________________________________________
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>
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