[C320-list] Adjustable backstay

[Irving Grunes]

Folks,
Our backstay adjuster was made by replacing the triangle at the top of the
split backstay with a block.
A new cable with a turnbuckle end went from the port side turnbuckle thru
that block and went down to a point below the the bikini and terminated to a
second single block.
Then another turnbuckle terminated end cable went from the stbd turnbuckle
thru that second block and thru a big line stopper ball to terminate at the
top of the 3 sheave block of a 6:1 boom down haul that includes a line
cleat,
Then the bottom end of the 6:1 boom down haul is fastened to the bottom of
the stbd turnbuckle.
This give us 6:1 of the down haul, then 2:1 of the second pulley, then 2:1
at the triangle pulley giving an effective range of 24:1 tension on the
backstay to the jib forestay.
The length of the stbd cable thru second block, thru the stopper,then to the
6:1 pulley is adjusted so that if all the tension of the down haul is
released, the forestay tension is proper for light air sailing.
Am off skiing in Coloardo.
In a few weeks I will try to get the rigger bill of material posted.

Irv Grunes
Isle of Wight #851

On Tue, Feb 22, 2011 at 10:27 AM, William Russell <RussellW at oacsd.org>wrote:

> I'm a big fan of an adjustable backstay.  I like the 8:1 purchase you can
> put on the 320's split backstay (non-stretch line shackled to one backstay
> chainplate, up through the block on the adjuster, then attached to a 4:1
> purchase with two fiddle blocks and a cam cleat, secured to the other side
> of the split backstay.)  It's easy to adjust and is the simplest way to put
> serious tension on the headstay as the wind builds (upwind) or to ease it
> off to power up on a reach or downwind.  I think it's a critical adjustment
> to avoid being overpowered as the wind builds going upwind - flattens the
> entry on the jib and depowers the main.  I wouldn't race (or cruise) without
> it.
> Bill Russell
> "Little Wing," C-320 #545
>
> >>> <c320-list-request at lists.catalina320.com> 02/21/11 2:49 PM >>>
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>
> Today's Topics:
>
> 1. Re: Cleaning Windshield (Bill Culbertson)
> 2. Re: Cleaning Windshield (Bill Culbertson)
> 3. Re: Engine/Shaft Noise and Vibration (Dennis Harris)
> 4. Re: Engine/Shaft Noise and Vibration (Dennis Harris)
> 5. Re: Engine/Shaft Noise and Vibration (Dennis Harris)
> 6. Re: Engine/Shaft Noise and Vibration (wflowe3 at aim.com)
> 7. Adjustable Back Stays (RUTHE SMALL)
> 8. Re: Adjustable Back Stays (Andrew Santangelo)
> 9. Re: Adjustable Back Stays (Jane & Ken)
> 10. Re: Adjustable Back Stays (Andrew Santangelo)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 20 Feb 2011 14:55:07 -0800 (PST)
> From: Bill Culbertson <billculb_a2 at yahoo.com>
> To: C320-List at Catalina320.com, c320-list at lists.catalina320.com
> Subject: Re: [C320-list] Cleaning Windshield
> Message-ID: <938019.71476.qm at web39422.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> Plus it smells "lemony fresh" :)
> I'm going to try this when we thaw here in Michigan. Thanks.
> -bill culbertson
> Harmony 859
>
>
>
>
> ________________________________
> From: "Henderson, David" <dhender at allstate.com>
> To: c320-list at lists.catalina320.com
> Sent: Fri, February 18, 2011 3:51:26 PM
> Subject: Re: [C320-list] Cleaning Windshield
>
> An old salt down at my marina suggested using "Lemon Pledge" furniture
> cleaner/polish on the clear plastic panels in the dodger. I had several
> years of crud built up on them. I finally tried it last summer and was
> very pleasantly surprised with the result. And I'll bet it's a whole
> lot cheaper than most of those "marine" products on the shelf at WM.
>
> Dave Henderson
> Dottie B #1049
>
>
> ------------------------------
>
> Message: 6
> Date: Thu, 17 Feb 2011 16:51:42 -0500
> From: Thomas Bowman <tadbowman at optonline.net>
> To: C320-List at Catalina320.com
> Subject: [C320-list] Cleaning Windshield
> Message-ID: <001b01cbceec$ddc46330$994d2990$@optonline.net>
> Content-Type: text/plain; charset=us-ascii
>
> I need to clean my windshield this year. Can anyone suggest products
> that
> they are particularly satisfied with?
> Best,
> Tom Bowman
> Snow Goose 644
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 20 Feb 2011 14:55:07 -0800 (PST)
> From: Bill Culbertson <billculb_a2 at yahoo.com>
> To: C320-List at Catalina320.com, c320-list at lists.catalina320.com
> Subject: Re: [C320-list] Cleaning Windshield
> Message-ID: <938019.71476.qm at web39422.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> Plus it smells "lemony fresh" :)
> I'm going to try this when we thaw here in Michigan. Thanks.
> -bill culbertson
> Harmony 859
>
>
>
>
> ________________________________
> From: "Henderson, David" <dhender at allstate.com>
> To: c320-list at lists.catalina320.com
> Sent: Fri, February 18, 2011 3:51:26 PM
> Subject: Re: [C320-list] Cleaning Windshield
>
> An old salt down at my marina suggested using "Lemon Pledge" furniture
> cleaner/polish on the clear plastic panels in the dodger. I had several
> years of crud built up on them. I finally tried it last summer and was
> very pleasantly surprised with the result. And I'll bet it's a whole
> lot cheaper than most of those "marine" products on the shelf at WM.
>
> Dave Henderson
> Dottie B #1049
>
>
> ------------------------------
>
> Message: 6
> Date: Thu, 17 Feb 2011 16:51:42 -0500
> From: Thomas Bowman <tadbowman at optonline.net>
> To: C320-List at Catalina320.com
> Subject: [C320-list] Cleaning Windshield
> Message-ID: <001b01cbceec$ddc46330$994d2990$@optonline.net>
> Content-Type: text/plain; charset=us-ascii
>
> I need to clean my windshield this year. Can anyone suggest products
> that
> they are particularly satisfied with?
> Best,
> Tom Bowman
> Snow Goose 644
>
>
> ------------------------------
>
> Message: 3
> Date: Sun, 20 Feb 2011 20:39:57 -0500
> From: "Dennis Harris" <dharris02 at suddenlink.net>
> To: <C320-List at Catalina320.com>
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
> Message-ID: <427202CB569E4DB9B28E0FF3660D8A5B at Office>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>    reply-type=response
>
> Bruce,
>
> Thanks, I've downloaded the procedure.
>
> Dennis Harris
> C320
> # 694 Washington, NC
>
> ----- Original Message -----
> From: "Bruce Heyman" <bruceheyman at cox.net>
> To: <C320-List at Catalina320.com>
> Sent: Saturday, February 19, 2011 12:13 PM
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
>
>
> > Dennis,
> > My bet is that if you aligned the propshaft you would be very happy with
> > the result. We used the process that is posted on our web site. Took a
> > while and the math is a bit conveluted but the result was delightful.
> > Bruce
> > Somerset 671 SoSal
> >
> > Bruce Heyman
> > (949) 289-8400
> > BruceHeyman at cox.net
> >
> > -----Original message-----
> > From: Dennis Harris <dharris02 at suddenlink.net>
> > To: C320-List at Catalina320.com
> > Sent: Sat, Feb 19, 2011 16:40:29 GMT+00:00
> > Subject: [C320-list] Engine/Shaft Noise and Vibration
> >
> > Just curious if other C320 owners experience this. I get a low level
> > noise/vibration at certain speeds, and always have the fear that, despite
> > what the mechanic said, the shaft may be striking the hull, but the
> > frequency doesn't seem right. The boat is a 2000 model (#694) with Yanmar
> > 3GM30F engine and transmission with 2.21 reduction. The sound is a little
> > like a very low level "whump, whump, whump". The frequency increases with
> > engine speed, but at higher speeds, the noise is largely overridden by
> > engine noise and vibration does seem to increase significantly, so it may
> > be noise more than vibration. The cutless bearing is snug and there is
> > no movement in the shaft. However, in last year's haul out, on the
> > forward edge of shaft strut, a small crack had come in hull fairing
> > material. The three remaining sides around the strut were solid and
> > there was no leaking into the boat. The four strut bolts were tight. In
> > previous haul outs, this area was fine, and the noise/vibration that I
> > have mentioned has always been present through out the 10+ years that
> > I've owned the boat. There have been no issues (abnormal, frequent wear)
> > at the packing gland. At ~2200 rpm, the intermittent sound occurs roughly
> > 100 times/minute. With the 2.21 transmission reduction, this means that
> > the sound occurs at a frequency of once per 10 shaft rotations, so in my
> > mind, I have attributed the sound/vibration to be a harmonic of the
> > combined system (hull, engine, shaft, etc.) and suspect that it's
> > something not to worry about. But....what if?
> >
> > Do others experience this? Is it a problem that needs to be addressed,
> > and if so, how?
> >
> > Thanks,
> >
> > Dennis Harris
> > C320 #694, Washington, NC
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 20 Feb 2011 20:43:55 -0500
> From: "Dennis Harris" <dharris02 at suddenlink.net>
> To: <C320-List at Catalina320.com>
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
> Message-ID: <54AFBBB95FA149ECA974F53FD6D01192 at Office>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>    reply-type=original
>
> Irv,
>
> Thanks for the suggestion. Any recommendations on who I should get to do
> this (ideally some one in/accessible to NC)? If the shaft/engine
> alignment/mount checks don't solve the problem, I get the prop balance
> checked at next haul out.
>
> Dennis Harris, C320 #694 Washington, NC
>
> ----- Original Message -----
> From: "Irving Grunes" <igrunes at gmail.com>
> To: <C320-List at catalina320.com>
> Sent: Saturday, February 19, 2011 11:50 AM
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
>
>
> > Has your prop been balanced?
> > Irv #851
> >
> > On Sat, Feb 19, 2011 at 9:40 AM, Dennis Harris
> > <dharris02 at suddenlink.net>wrote:
> >
> >> Just curious if other C320 owners experience this. I get a low level
> >> noise/vibration at certain speeds, and always have the fear that,
> despite
> >> what the mechanic said, the shaft may be striking the hull, but the
> >> frequency doesn't seem right. The boat is a 2000 model (#694) with
> >> Yanmar
> >> 3GM30F engine and transmission with 2.21 reduction. The sound is a
> >> little
> >> like a very low level "whump, whump, whump". The frequency increases
> >> with
> >> engine speed, but at higher speeds, the noise is largely overridden by
> >> engine noise and vibration does seem to increase significantly, so it
> may
> >> be
> >> noise more than vibration. The cutless bearing is snug and there is no
> >> movement in the shaft. However, in last year's haul out, on the forward
> >> edge of shaft strut, a small crack had come in hull fairing material.
> >> The
> >> three remaining sides around the strut were solid and there was no
> >> leaking
> >> into the boat. The four strut bolts were tight. In previous haul outs,
> >> this area was fine, and the noise/vibration that I have mentioned has
> >> always
> >> been present through out the 10+ years that I've owned the boat. There
> >> have
> >> been no issues (abnormal, frequent wear) at the packing gland. At ~2200
> >> rpm,
> >> the intermittent sound occurs roughly 100 times/minute. With the 2.21
> >> transmission reduction, this means that the sound occurs at a frequency
> >> of
> >> once per 10 shaft rotations, so in my mind, I have attributed the
> >> sound/vibration to be a harmonic of the combined system (hull, engine,
> >> shaft, etc.) and suspect that it's something not to worry about.
> >> But....what
> >> if?
> >>
> >> Do others experience this? Is it a problem that needs to be addressed,
> >> and
> >> if so, how?
> >>
> >> Thanks,
> >>
> >> Dennis Harris
> >> C320 #694, Washington, NC
> >>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sun, 20 Feb 2011 20:46:45 -0500
> From: "Dennis Harris" <dharris02 at suddenlink.net>
> To: <C320-List at Catalina320.com>
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
> Message-ID: <322C4AD691BA4A029300EDA82DAA0911 at Office>
> Content-Type: text/plain; format=flowed; charset="iso-8859-15";
>    reply-type=response
>
> Karl,
>
> I didn't find the Mainsheet article, but I did find a brief write up
> (perhaps a forum message that would appear to be from you on the same
> subject. I downloaded it and will check out my situation. Thanks
>
> Dennis Harris
> C320 #694
>
> ----- Original Message -----
> From: "Karl Mielenhausen _/)" <C320 at suddenlink.net>
> To: <C320-List at catalina320.com>
> Sent: Sunday, February 20, 2011 1:20 AM
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
>
>
> > Dennis,
> >
> > My Mainsheet article
> > (http://www.catalina320.com/article.php/20090227141444654) might be of
> > interest. I had several similar symptoms.
> > You may get lucky and discover loose jack bolts on one or more of the
> > engine mounts, like I had.
> >
> > Karl
> >
> > On Sat, 19 Feb 2011 11:40:29 -0500, Dennis Harris
> > <dharris02 at suddenlink.net> wrote:
> >
> >> Just curious if other C320 owners experience this. I get a low level
> >> noise/vibration at certain speeds, and always have the fear that,
> >> despite what the mechanic said, the shaft may be striking the hull, but
> >> the frequency doesn't seem right. The boat is a 2000 model (#694) with
> >> Yanmar 3GM30F engine and transmission with 2.21 reduction. The sound is
> >> a little like a very low level "whump, whump, whump". The frequency
> >> increases with engine speed, but at higher speeds, the noise is largely
> >> overridden by engine noise and vibration does seem to increase
> >> significantly, so it may be noise more than vibration. The cutless
> >> bearing is snug and there is no movement in the shaft. However, in last
> >> year's haul out, on the forward edge of shaft strut, a small crack had
> >> come in hull fairing material. The three remaining sides around the
> >> strut were solid and there was no leaking into the boat. The four strut
> >> bolts were tight. In previous haul outs, this area was fine, and the
> >> noise/vibration that I have mentioned has always been present through
> >> out the 10+ years that I've owned the boat. There have been no issues
> >> (abnormal, frequent wear) at the packing gland. At ~2200 rpm, the
> >> intermittent sound occurs roughly 100 times/minute. With the 2.21
> >> transmission reduction, this means that the sound occurs at a frequency
> >> of once per 10 shaft rotations, so in my mind, I have attributed the
> >> sound/vibration to be a harmonic of the combined system (hull, engine,
> >> shaft, etc.) and suspect that it's something not to worry about.
> >> But....what if?
> >>
> >> Do others experience this? Is it a problem that needs to be addressed,
> >> and if so, how?
> >>
> >> Thanks,
> >>
> >> Dennis Harris
> >> C320 #694, Washington, NC
> >
> >
> > --
> > Karl Mielenhausen
> > Catalina 320 Hull 690
> >
>
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 21 Feb 2011 09:55:19 -0500 (EST)
> From: wflowe3 at aim.com
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
> Message-ID: <8CD9FEE7DFC8C75-C18-3BE5B at webmail-m079.sysops.aol.com>
> Content-Type: text/plain; charset="us-ascii"
>
>
> How does one check/balance a propeller ?
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: Dennis Harris <dharris02 at suddenlink.net>
> To: C320-List <C320-List at Catalina320.com>
> Sent: Sun, Feb 20, 2011 7:46 pm
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
>
>
> Karl,
>
> I didn't find the Mainsheet article, but I did find a brief write up
> (perhaps a forum message that would appear to be from you on the same
> subject. I downloaded it and will check out my situation. Thanks
>
> Dennis Harris
> C320 #694
>
> ----- Original Message -----
> From: "Karl Mielenhausen _/)" <C320 at suddenlink.net>
> To: <C320-List at catalina320.com>
> Sent: Sunday, February 20, 2011 1:20 AM
> Subject: Re: [C320-list] Engine/Shaft Noise and Vibration
>
>
> > Dennis,
> >
> > My Mainsheet article
> > (http://www.catalina320.com/article.php/20090227141444654) might be of
> > interest. I had several similar symptoms.
> > You may get lucky and discover loose jack bolts on one or more of the
> > engine mounts, like I had.
> >
> > Karl
> >
> > On Sat, 19 Feb 2011 11:40:29 -0500, Dennis Harris
> > <dharris02 at suddenlink.net> wrote:
> >
> >> Just curious if other C320 owners experience this. I get a low level
> >> noise/vibration at certain speeds, and always have the fear that,
> >> despite what the mechanic said, the shaft may be striking the hull, but
> >> the frequency doesn't seem right. The boat is a 2000 model (#694) with
> >> Yanmar 3GM30F engine and transmission with 2.21 reduction. The sound is
> >> a little like a very low level "whump, whump, whump". The frequency
> >> increases with engine speed, but at higher speeds, the noise is largely
> >> overridden by engine noise and vibration does seem to increase
> >> significantly, so it may be noise more than vibration. The cutless
> >> bearing is snug and there is no movement in the shaft. However, in last
> >> year's haul out, on the forward edge of shaft strut, a small crack had
> >> come in hull fairing material. The three remaining sides around the
> >> strut were solid and there was no leaking into the boat. The four strut
> >> bolts were tight. In previous haul outs, this area was fine, and the
> >> noise/vibration that I have mentioned has always been present through
> >> out the 10+ years that I've owned the boat. There have been no issues
> >> (abnormal, frequent wear) at the packing gland. At ~2200 rpm, the
> >> intermittent sound occurs roughly 100 times/minute. With the 2.21
> >> transmission reduction, this means that the sound occurs at a frequency
> >> of once per 10 shaft rotations, so in my mind, I have attributed the
> >> sound/vibration to be a harmonic of the combined system (hull, engine,
> >> shaft, etc.) and suspect that it's something not to worry about.
> >> But....what if?
> >>
> >> Do others experience this? Is it a problem that needs to be addressed,
> >> and if so, how?
> >>
> >> Thanks,
> >>
> >> Dennis Harris
> >> C320 #694, Washington, NC
> >
> >
> > --
> > Karl Mielenhausen
> > Catalina 320 Hull 690
> >
>
>
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Mon, 21 Feb 2011 08:10:05 -0800
> From: RUTHE SMALL <sailmiss at msn.com>
> To: C320-List <c320-list at catalina320.com>
> Subject: [C320-list] Adjustable Back Stays
> Message-ID: <BAY156-w574812925F3DF7630A5B8ED6D90 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
> There is an article in the new "Mainsheet" about installing adjustable
> backstays (or a backstay tensioner) on a C36MKII. Have any of you done this
> on a 320? If so, what results did you get. I am not currently racing, but
> dealing with endless frustration being beaten by friends in a tricked out
> C30 and a C310. I was hoping this would enable me to point higher and do
> better when close hauled.
> Sam Wagner
> RUTHSM (Hull 74)
>
> ------------------------------
>
> Message: 8
> Date: Mon, 21 Feb 2011 09:58:18 -0700
> From: Andrew Santangelo <andrew_santangelo at mac.com>
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Adjustable Back Stays
> Message-ID: <A3F8CAB1-0E43-4154-87F7-87110654B83D at mac.com>
> Content-Type: text/plain; CHARSET=US-ASCII
>
> Hello Sam,
>
> I have a hydraulic backstay on "Dawn Treader". It did help with pointing
> upwind and speed.
>
> The C320 should beat the C30 and C310, however if they are tricked out
> every little bit helps. I also went with a autoprop folding prop (HUGE
> difference), fin keel (huge difference too), stiffer sheets and halyards,
> racing sails, grauhauer traveler and gennoa trim cars, and extra winches.
> Add experience to the crew and we began to win or place in many races on
> Lake Michigan out of Holland. So every little bit helped.
>
> Andrew
>
> C320
> #333
> Dawn Treader
> San Francisco
>
>
> On Feb 21, 2011, at 9:10 AM, RUTHE SMALL wrote:
>
> >
> > There is an article in the new "Mainsheet" about installing adjustable
> backstays (or a backstay tensioner) on a C36MKII. Have any of you done this
> on a 320? If so, what results did you get. I am not currently racing, but
> dealing with endless frustration being beaten by friends in a tricked out
> C30 and a C310. I was hoping this would enable me to point higher and do
> better when close hauled.
> > Sam Wagner
> > RUTHSM (Hull 74)
>
>
>
> ------------------------------
>
> Message: 9
> Date: Mon, 21 Feb 2011 10:41:15 -0800 (PST)
> From: Jane & Ken <obuoy4848 at sbcglobal.net>
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Adjustable Back Stays
> Message-ID: <703409.80119.qm at web82604.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> Sam,
> ?? The article is basic backstay, adjustment? works for nearly any boat
> with a split backstay. As Andrew states, the speed of the boat is affected
> by many things--sails and folding/feathering prop--sail shape
> (adjustment)--crew experience--smooth bottom--attention to wind direction
> and? wind shifts.? Yes, the backstay adjuster will help with pointing;
> however the most improvement for speed is a clean/smooth bottom and a prop
> with minimum drag.
> Ken? OBUOY? #219
> --- On Mon, 2/21/11, Andrew Santangelo <andrew_santangelo at mac.com> wrote:
>
>
> From: Andrew Santangelo <andrew_santangelo at mac.com>
> Subject: Re: [C320-list] Adjustable Back Stays
> To: C320-List at Catalina320.com
> Date: Monday, February 21, 2011, 10:58 AM
>
>
> Hello Sam,
>
> I have a hydraulic backstay on "Dawn Treader".? It did help with pointing
> upwind and speed.?
>
> The C320 should beat the C30 and C310, however if they are tricked out
> every little bit helps.? I also went with a autoprop folding prop (HUGE
> difference), fin keel (huge difference too), stiffer sheets and halyards,
> racing sails, grauhauer traveler and gennoa trim cars, and extra winches.
> Add experience to the crew and we began to win or place in many races on
> Lake Michigan out of Holland.? So every little bit helped.
>
> Andrew
>
> C320
> #333
> Dawn Treader
> San Francisco
>
>
> On Feb 21, 2011, at 9:10 AM, RUTHE SMALL wrote:
>
> >
> > There is an article in the new "Mainsheet" about installing adjustable
> backstays (or a backstay tensioner) on a C36MKII.? Have any of you done this
> on a 320?? If so, what results did you get.? I am not currently racing, but
> dealing with endless frustration being beaten by friends in a tricked out
> C30 and a C310.? I was hoping this would enable me to point higher and do
> better when close hauled.
> > Sam Wagner
> > RUTHSM (Hull 74) ??? ???????? ?????? ??? ?
>
>
>
> ------------------------------
>
> Message: 10
> Date: Mon, 21 Feb 2011 12:37:19 -0700
> From: Andrew Santangelo <andrew_santangelo at mac.com>
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Adjustable Back Stays
> Message-ID: <D174B73B-86DE-43A7-B157-907CF0291EBC at mac.com>
> Content-Type: text/plain; CHARSET=US-ASCII
>
> Sam,
>
> Just to add what Ken said, a clean boat bottom is very important. We had a
> very smooth bottom, but that was at best a so-so gain if anything (but can
> be very expensive). Clean bottom is critical - with plant life build up it
> is like dragging a rug under your boat!
>
> I will say though switching from the wing keel to the fin keel was as
> almost a profound speed change as the propellor. First off you lose 400lbs -
> less weight to drag around. Secondly, the boat seemed to point at least 5
> deg better to windward. This is a very big difference between winning and
> losing in a race.
>
> We haven't raced in 2 years with "Dawn Treader", but she does have a pep in
> her step and is very responsive. Of course she does win those "informal"
> races on the water. :-)
>
> Andrew
>
> C320
> #333
> Dawn Treader
> San Francisco
>
> On Feb 21, 2011, at 11:41 AM, Jane & Ken wrote:
>
> > Sam,
> > The article is basic backstay, adjustment works for nearly any boat with
> a split backstay. As Andrew states, the speed of the boat is affected by
> many things--sails and folding/feathering prop--sail shape
> (adjustment)--crew experience--smooth bottom--attention to wind direction
> and wind shifts. Yes, the backstay adjuster will help with pointing; however
> the most improvement for speed is a clean/smooth bottom and a prop with
> minimum drag.
> > Ken OBUOY #219
> > --- On Mon, 2/21/11, Andrew Santangelo <andrew_santangelo at mac.com>
> wrote:
> >
> >
> > From: Andrew Santangelo <andrew_santangelo at mac.com>
> > Subject: Re: [C320-list] Adjustable Back Stays
> > To: C320-List at Catalina320.com
> > Date: Monday, February 21, 2011, 10:58 AM
> >
> >
> > Hello Sam,
> >
> > I have a hydraulic backstay on "Dawn Treader". It did help with pointing
> upwind and speed.
> >
> > The C320 should beat the C30 and C310, however if they are tricked out
> every little bit helps. I also went with a autoprop folding prop (HUGE
> difference), fin keel (huge difference too), stiffer sheets and halyards,
> racing sails, grauhauer traveler and gennoa trim cars, and extra winches.
> Add experience to the crew and we began to win or place in many races on
> Lake Michigan out of Holland. So every little bit helped.
> >
> > Andrew
> >
> > C320
> > #333
> > Dawn Treader
> > San Francisco
> >
> >
> > On Feb 21, 2011, at 9:10 AM, RUTHE SMALL wrote:
> >
> >>
> >> There is an article in the new "Mainsheet" about installing adjustable
> backstays (or a backstay tensioner) on a C36MKII. Have any of you done this
> on a 320? If so, what results did you get. I am not currently racing, but
> dealing with endless frustration being beaten by friends in a tricked out
> C30 and a C310. I was hoping this would enable me to point higher and do
> better when close hauled.
> >> Sam Wagner
> >> RUTHSM (Hull 74)
> >
>
>
>
> End of C320-list Digest, Vol 1032, Issue 1
> ******************************************
>
>