[C320-list] Engine / shaft alignment

[Lachance, Michael B (ISD, IT)]

thanks 

-----Original Message-----
From: C320-List-bounces at catalina320.com
[mailto:C320-List-bounces at catalina320.com] On Behalf Of crashley at gte.net
Sent: Sunday, May 21, 2006 9:13 AM
To: C320-List
Subject: Re: [C320-list] Engine / shaft alignment

As far as I know you MUST perform an engine alignment with the boat in
the water. Out of the water the hull stresses are different. Makes sense
to me.

CRA
Rosebus #882


----- Original Message -----
From: "Lachance, Michael B (ISD, IT)" <MLaChance at thehartford.com>
To: "C320-List" <C320-List at catalina320.com>
Sent: Sunday, May 21, 2006 4:28 AM
Subject: Re: [C320-list] Engine / shaft alignment


I also replaced 3 blade fixed with Gori and notice a little vibration at
certain RPMs. Newbie question: can one perform such alignment with the
boat in the water? Any advice on how to actually do alignment with
Perkins M30 would be appreciated too. BTW, with the Gori and Mark
Yaeger's rig tuning recommendations I'm at least a full knot faster on
every point of sail and pointing higher too!
Mike

-----Original Message-----
From: C320-List-bounces at catalina320.com
[mailto:C320-List-bounces at catalina320.com] On Behalf Of Jeff Church
Sent: Saturday, May 20, 2006 10:44 PM
To: C320-List
Subject: Re: [C320-list] Engine / shaft alignment

Scott,

Take a closer look at the lower portion of the motor mount where it
bolts into the engine bunk. The aft holes on the aft mounts and the
forward holes on the forward mounts are elongated so that the engine can
be angled or shifted laterally.

JeffC


----- Original Message -----
From: "Scott Thompson" <sthompson at toad.net>
To: "C320-List" <C320-List at catalina320.com>
Sent: Saturday, May 20, 2006 8:36 PM
Subject: [C320-list] Engine / shaft alignment


> Surprise now has a Gori 2 blade folding prop to replace the 3 blade
fixed.
> So far I'm satisfied, except that there is definitely quite a bit more

> vibration under power than before.  Today I tried to tackle this by
doing
> a shaft alignment.  This is a job I've ignored since owning the boat
and
> have been rather nervous about that situation.  When I unbolted the
> flanges I found that the engine flange did not line up well with the
> shaft, and was a bit higher.  I was able to get the alignment much
better
> in the fore-aft plane using the adjustment advice in my owners manual,
but
> was left with somewhat excessive side to side misalignment.  To be
> precise, the two flanges have good axial alignment and are even top to

> bottom, but there is a bit of a gap (about .014 inches by my feeler
gauge
> on the starboard side.  I can't figure out how to tune this out.  It
would
> seem to require moving the front of the engine slightly to starboard,
but
> I don't see any way to adjust the engine mounts laterally.  How is
this
> supposed to be done?  I have the Yanmar 3GM30F, 1999 model.
>
> Scott Thompson
> Surprise, 653
>
>




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