[C320-list] New shaft

[Chris Brearley]

Thanks Jeff
I will try that when I have completed Simrad auto pilot install.

Regards,

Christopher Brearley 

> On 18 Jun 2014, at 9:09 am, "Jeff Hare" <Catalina at thehares.com> wrote:
> 
> Chris,
> 
> Try Increasing your idle just slightly as I described in my earlier comment
> on the "diesel vibration, 1999 Yanmar" thread.  That completely solved it on
> our boat. 
> 
> -Jeff Hare
> 
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
> Of christopher Brearley
> Sent: Tuesday, June 17, 2014 5:34 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] New shaft
> 
> Hi Jerry,
> 
> I have recently replaced my engine mounts with genuine Yanmah product and
> there is still the vibration when reducing RPM. Cutless bearing is also
> fine, so I am unsure of what is causing it. Reduce RPM slowly?
> 
> Chris,
> 
> WeaRitz@
> #374
> 
> 
>> On 17/06/2014, at 10:19 PM, jsheets at aol.com wrote:
>> 
>> Thanks all for the responses/advice. I suspect I will be adding motor
> mounts to my project list. 
>> 
>> Jerry 
>> JellyRoll  #890
>> 
>>> On Jun 16, 2014, at 5:35 PM, Jim Brown <jbrown5093 at gmail.com> wrote:
>>> 
>>> You can check if the vibration is in the motor mounts pretty easily.
>>> Uncover the engine and (watch out for the belts and pulleys) put a
> longish
>>> pry bar or big screw driver in the motor mount. Pull up hard. You'll be
>>> surprised about how much they raise up. With the motor mount stressed
>>> throttle up and if it is a mount the vibration should be gone or much
>>> better. Do each mount individually. Mine (2004) are very weak and when
>>> throttling down to idle it sounds like a bucket of bolts just above idle
>>> speed when there is significant vibration. With the mounts stressed-no
>>> noise at all. Getting ready to replace them . I believe that yanmar
>>> recommends replacement every 4-5 years (I suspect nobody does that).
>>> 
>>> Jim Brown
>>> 
>>> 
>>>> On Mon, Jun 16, 2014 at 4:35 PM, <jsheets at aol.com> wrote:
>>>> 
>>>> Probably around 800 - 1000.
>>>> 
>>>> Jerry
>>>> 
>>>>> On Jun 16, 2014, at 3:11 PM, <tharrison at innovations-plus.com> wrote:
>>>>> 
>>>>> Just wondering what is you starting RPM"s
>>>>> 
>>>>> Ted - hull 424
>>>>> 
>>>>> -----Original Message-----
>>>>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
>>>> Behalf
>>>>> Of Andrew Santangelo
>>>>> Sent: June-16-14 2:30 PM
>>>>> To: C320-List at Catalina320.com
>>>>> Subject: Re: [C320-list] New shaft
>>>>> 
>>>>> Jerry,
>>>>> 
>>>>> It could be related tot he cutlass bearing.  I have had this replaced 3
>>>>> times over the last 18 years on Dawn Treader.  I also had a drive saver
>>>>> installed for the Autoprop and it saves on wear and tear with the
> engine.
>>>>> 
>>>>> Andrew Santangelo
>>>>> 
>>>>> C320 "Dawn Treader"
>>>>> #333
>>>>> Holland, MI
>>>>> 
>>>>> J22 "Blitzkrieg"
>>>>> Elephant Butte, New Mexico
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>>> On Jun 16, 2014, at 2:26 PM, jsheets at aol.com wrote:
>>>>>> 
>>>>>> I recently had a new prop shaft installed due to some previous
> problems
>>>>> with the old shaft. Since installed, on two occasions I have had a
> strong
>>>>> vibration of the shaft and transmission when starting out at low
> speeds.
>>>>> Once given more throttle it works itself out. Does not do it when
> slowing
>>>>> down from higher speed, only in early acceleration. Mechanic is
> convinced
>>>>> the alignment is correct. Says he thinks part of the problem is the
> motor
>>>>> mounts Yanmar uses, allowing for too much movement of the motor. Any
>>>>> thoughts or similar experience anyone can share is appreciated.
>>>>>> 
>>>>>> Jerry
>>>>>> 
>>>>>> JellyRoll  #890
>