[C320-list] New shaft

[jsheets at aol.com]

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
>>