[C38] Symetrical Spinnakers
Joseph Launie
jlaunie at cox.net
Fri Aug 3 15:22:18 EDT 2012
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 <mailto:jlaunie at cox.net>
> *To: *listserve at catalina38.org <mailto: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 <mailto: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?? 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
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>> > name="City"/>
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>> > <!--[if !mso]>
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>> > <!--
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>> >
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>> >
>> > <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 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
>> > 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 we'll 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--
>> >
>>
>>
>> _______________________________________________
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>>
>>
>>
>> --
>> W H Knowles
>>
>>
>>
>>
>> _______________________________________________
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