[C320-list] Alternator Upgrades

[Pat Kenefick]

I know people have upgraded their alternators - I would appreciate any 
suggestions as to various upgrades installed.
Thanks
Pat Kenefick
"Cynthia gale"
Hull 833
Bath, NC
----- Original Message ----- 
From: <c320-list-request at lists.catalina320.com>
To: <c320-list at lists.catalina320.com>
Sent: Saturday, July 11, 2009 3:00 PM
Subject: C320-list Digest, Vol 502, Issue 2


> Send C320-list mailing list submissions to
> c320-list at lists.catalina320.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://lists.catalina320.com/listinfo.cgi/c320-list-catalina320.com
> or, via email, send a message with subject or body 'help' to
> c320-list-request at lists.catalina320.com
>
> You can reach the person managing the list at
> c320-list-owner at lists.catalina320.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of C320-list digest..."
>
>
> Today's Topics:
>
>   1. Re: Tachometer Problem - Ring Gear/Sensor Gap (Robert E. Sloat)
>   2. Halyard & chain questions (jpmesa at aol.com)
>   3. Re: Halyard & chain questions (Jeff Hare)
>   4. Re: Halyard & chain questions (Chris Burti)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 11 Jul 2009 10:23:36 -0500
> From: "Robert E. Sloat" <resloat at comcast.net>
> Subject: Re: [C320-list] Tachometer Problem - Ring Gear/Sensor Gap
> To: <C320-List at Catalina320.com>
> Message-ID: <58025FE4C241452488664F6B48E77173 at SloatLaptop>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Scott-You are right.  The clearance is adjustable and Yanmar manual says 
> the
> gap between the tachometer sensor and the ring gear should be 1.3 mm 
> (0.0511
> in.).  It also says the sensor must not be loose fitted, so if it moves
> around that may cause problems.
>
> There is a test of the sensor using an oscilloscope which is difficult to
> explain.
>
> One easily measured spec. for the sensor is its internal resistance at 
> rest
> which is 1.6 k ohms + or - 0.1 k ohms.  If the resistance across the two
> pins on the sensor which connected to the wires going to the tachometer is
> not that then the manual remedy is to replace the sensor.
>
> Bob Sloat
> Savannah 894
> ----- Original Message ----- 
> From: "Scott Thompson" <surprise at thompson87.com>
> To: <C320-List at Catalina320.com>
> Sent: Saturday, July 11, 2009 8:32 AM
> Subject: Re: [C320-list] Tachometer Problem
>
>
>>I don't have my manual handy.  Is the sending unit adjustable?  It occurs
>>to me that clearances between the flywheel gear teeth and sensor might be
>>off on my boat if it is.  I've got erratic and low tach readings that I
>>haven't been able to track down.
>>
>>
>> Robert E. Sloat wrote:
>>> Larry-Good pictures and what you have concluded matches the Yammer
>>> Service Manual for the 3GM30F.  The number of teeth on the ring gear for
>>> the 3GM30F is 97.  For the 3HM35 version of this engine which I think is
>>> the sail drive model, the number of teeth is 114.  According to the
>>> Manual, the basic tachometers and the sending units for for either ring
>>> gear are the same so the black dial looks like it is used for switching
>>> to either ring gear probably.  This is not shown in the Service Manual
>>> and it doesn't mention the calibration screw.
>>>
>>>> From your pictures it is clear how to dial in a working the tachometer
>>>> if it
>>> is off from actual RPMs measured at the crank shaft pulley.
>>>
>>> Bob Sloat
>>> Savannah 894
>>>
>>> ----- Original Message ----- From: "Melissa&Larry Leibman"
>>> <theleibmans at verizon.net>
>>> To: <c320-list at lists.catalina320.com>
>>> Sent: Friday, July 10, 2009 8:14 PM
>>> Subject: [C320-list] Tachometer Problem
>>>
>>>
>>> Jamie,
>>>
>>> You may have already rectified the tach issue but if not, I have been
>>> having the same behavior for several months. I finally got around to
>>> checking into it beginning at the tach sender on the instrument housing
>>> and working up to the tach itself. I've uploaded a few pictures at:
>>>
>>> http://www.catalina320.com/mediagallery/album.php?aid=214&page=1
>>>
>>> It appears at least on Easy Going that the problem was at the 
>>> tachometer.
>>> If you check out the picture at the link below, there is a calibration
>>> adjustment on the left side of the picture but on the right side is a
>>> kind of blurry black dial adjustment. I believe that adjustment allows
>>> you to set the number of teeth in the pinion gear. From the labeling
>>> around the dial I expected it to have 3 positions. However, it just 
>>> turns
>>> continuously with no obvious detents. As the engine was running I
>>> adjusted this dial and at certain points the tach would jump much like I
>>> would observe while running. I adjusted within the first range/position
>>> until the tach appeared to give a stable reading. I figured I would also
>>> need to adjust the calibration screw but when I rechecked the tach with 
>>> a
>>> laser tach, the readings appeared to match within the precision of the
>>> tach in the cockpit. I then ran the engine at several rpm settings and
>>> all seemed to agree well with the
>>> laser tach. Previously my laser tach gave readings 100-400 rpm lower 
>>> than
>>> the cockpit tach depending on the speed.
>>>
>>> http://www.catalina320.com/mediagallery/media.php?f=0&sort=0&s=2009071017503760 I
>>> haven't had a chance to take the boat for a spin so I'm not certain if
>>> the problem is really solved but so far so good.
>>>
>>> Larry
>>
>> -- 
>> Scott Thompson
>> Surprise, #653
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sat, 11 Jul 2009 12:36:21 -0400
> From: jpmesa at aol.com
> Subject: [C320-list] Halyard & chain questions
> To: C320-List at Catalina320.com
> Message-ID: <8CBD05CDBCEC084-84C-2E81 at WEBMAIL-MB11.sysops.aol.com>
> Content-Type: text/plain; charset="us-ascii"
>
> I'm not on my boat and don't have the manual with me so I was wondering if 
> anyone out there knows what the lenght and size of the Mainsail & jib 
> halyards are?? I'm thinking it's about time to repalce them. Also, on the 
> 500 Maxwell windlass conversion kit I believe the chain is 1/4" but will 
> it take both proof & HT type chain?? John & Bobbi? Holokai 2
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 11 Jul 2009 16:51:54 +0000
> From: "Jeff Hare" <catalina at thehares.com>
> Subject: Re: [C320-list] Halyard & chain questions
> To: C320-List at Catalina320.com
> Message-ID:
> <1192776773-1247331062-cardhu_decombobulator_blackberry.rim.net-2043661624- at bxe1241.bisx.prod.on.blackberry>
>
> Content-Type: text/plain
>
> John,
>
> Main halyards:  110 feet is a good length with about the right amount of 
> extra.
>
> We have 80' of High Test 1/4" chain and 150' 5/8"(?)  rhode on our primary 
> anchor.  We did that to hopefully allow the gypsy conversion.
> Jib Sheets are somewhere around 40' but you might check the Owners Manual 
> on the website.
>
> -Cheers
> -JeffH
> ------Original Message------
> From: jpmesa at aol.com
> Sender: c320-list-bounces at lists.catalina320.com
> To: C320-List at Catalina320.com
> ReplyTo: C320-List at Catalina320.com
> Subject: [C320-list] Halyard & chain questions
> Sent: Jul 11, 2009 12:36 PM
>
> I'm not on my boat and don't have the manual with me so I was wondering if 
> anyone out there knows what the lenght and size of the Mainsail & jib 
> halyards are?? I'm thinking it's about time to repalce them. Also, on the 
> 500 Maxwell windlass conversion kit I believe the chain is 1/4" but will 
> it take both proof & HT type chain?? John & Bobbi? Holokai 2
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 11 Jul 2009 13:46:59 -0400
> From: Chris Burti <clburti at gmail.com>
> Subject: Re: [C320-list] Halyard & chain questions
> To: C320-List at catalina320.com
> Message-ID:
> <79721a9c0907111046j1e8537a3i63e1bbc155f61b76 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Halyards are 3/8" / 9mm diameter.
>
> On Sat, Jul 11, 2009 at 12:51 PM, Jeff Hare <catalina at thehares.com> wrote:
>
>> John,
>>
>> Main halyards:  110 feet is a good length with about the right amount of
>> extra.
>>
>> We have 80' of High Test 1/4" chain and 150' 5/8"(?)  rhode on our 
>> primary
>> anchor.  We did that to hopefully allow the gypsy conversion.
>> Jib Sheets are somewhere around 40' but you might check the Owners Manual
>> on the website.
>>
>> -Cheers
>> -JeffH
>>  ------Original Message------
>> From: jpmesa at aol.com
>> Sender: c320-list-bounces at lists.catalina320.com
>> To: C320-List at Catalina320.com
>> ReplyTo: C320-List at Catalina320.com
>> Subject: [C320-list] Halyard & chain questions
>> Sent: Jul 11, 2009 12:36 PM
>>
>> I'm not on my boat and don't have the manual with me so I was wondering 
>> if
>> anyone out there knows what the lenght and size of the Mainsail & jib
>> halyards are?? I'm thinking it's about time to repalce them. Also, on the
>> 500 Maxwell windlass conversion kit I believe the chain is 1/4" but will 
>> it
>> take both proof & HT type chain?? John & Bobbi? Holokai 2
>>
>>
>>
>
>
> -- 
> Chris Burti Farmville, NC
>
>
> End of C320-list Digest, Vol 502, Issue 2
> *****************************************