[C320-list] Quieting cockpit vibrations

[Wash, Steve]

All,
I am working on a vibration/shaft alignment issue as well.  I searched the Google 320 list archive and found a very detailed procedure and worksheet for measuring and fixing the alignment.  It is on the To Do list for this weekend.  It is a pdf and .xls file called 'GetinLineShaft-Engine Alignment'.  It looks very complete.
Steve
#1029

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Chris Burti
Sent: Friday, June 14, 2013 9:22 AM
To: C320-List at catalina320.com
Subject: Re: [C320-list] Quieting cockpit vibrations

We did a Mainsheet article last year explaining it and how to check it. Even though the faces of the coupler appear to be aligned to each other, if they are not aligned to the shaft, the shafts will not be in alignment and you will get vibration even though the faces appear to guage out to .00001". It only becomes apparent when you rotate the faces 90 degrees to each other and recheck the gaps, then rotate and recheck through all four quadrants.


On Fri, Jun 14, 2013 at 8:39 AM, Scott Thompson <surprise at thompson87.com> wrote:
> I thought that coupler alignment and shaft alignment were the same thing.
> Can you be more specific?
>
> On 6/14/2013 12:17 AM, Chris Burti wrote:
>>
>> I'd recheck the coupler alighnment, then the shaft alignment...should 
>> not be that much vibratioon.
>>
>> On Thu, Jun 13, 2013 at 11:29 AM, Scott Thompson 
>> <surprise at thompson87.com> wrote:
>>>
>>> When I'm motoring Surprise the cockpit is very noisy. I can quiet 
>>> things down a lot by having guests, family or the dog sit on the 
>>> port cockpit locker and the two lazarrette lockers, which vibrate 
>>> loudly when the engine is running hard. But getting them to "stay" 
>>> is difficult. What have others done to quiet down those locker 
>>> covers? It appears to be the covers themselves, rather than the 
>>> latches, that cause the loud vibrations sympathetic with the engine, 
>>> BTW.
>>>
>>> Scott Thompson
>>> Surprise, #653 (1999)
>>>
>>
>>
>



--
Chris Burti
Farmville, NC