[C320-list] Main for Sale

[JJ Morrison]

I'm definitely interested. My sail is a 1999 and is getting tired, how much use has your sail had? We can talk offline.
Cheers and thanks
JohnM
1999#574

> From: jzienda at sbcglobal.net
> Date: Fri, 15 May 2015 08:57:29 -0500
> To: C320-List at Catalina320.com
> Subject: [C320-list] Main for Sale
> 
> Anyone interested to buy a used (2000 vintage) mainsail?  Good shape, no damages, recently cleaned and inspected by Sailcare. Full battens, with Dutchman system and a sail bag, sail cover. Free shipping within US and Canada.  Asking $500
> 
> John Zienda
> #691 "Zooza" Chicago, IL
> Cell (630) 408-3076
> 
> > On May 15, 2015, at 8:28 AM, John Meyers <jcmeyers7 at gmail.com> wrote:
> > 
> > Not sure what Brahmany will say, but from this array of discussions I
> > wondered what my shaft was doing. I had not notice any vibration or had any
> > adjustments made. So right after I launched  a couple weeks ago this year I
> > put the boat in the slip and put it in forward at about 1500 rpm. I laid a
> > wrench (could have use a screw driver too) on top of the spinning shaft and
> > there was some (minor?) vibration. When I held the wrench on the side of
> > the shaft there was no vibration compared to the top. So I assume that
> > there is some misalignment in one direction. Now I know that just after
> > launch the boat needs to settle in and come back to floating shape. So
> > hopefully this weekend when I go back out all vibration will be gone.  My
> > cutlass bearing appears to be still in good shape.
> > 
> > John Meyers
> > Wind Chime #406
> > Muskegon, MI
> > 
> > 
> > 
> >> On Fri, May 15, 2015 at 8:36 AM, Marek Fluder <marekf at gmail.com> wrote:
> >> 
> >> Brahmany,
> >> Can you elaborate on the "screwdriver trick"?
> >> Sounds like some interesting diagnostic.
> >> 
> >> Marek
> >> #1028
> >> 
> >> On Thu, May 14, 2015 at 5:49 PM, Brahmany Kite <brahmanykite at gmail.com>
> >> wrote:
> >> 
> >>> The shaft contacting the stern tube is a source of vibration also as
> >> there
> >>> is not much clearance. Especially if there is misalihnment. On one boat i
> >>> found the gland body pushed too far on astern through the hose and
> >> bumping
> >>> on the inboard end of the stern tube. Yanmar mounts are soft as you know
> >>> and small clearances dont help. Under load the engine will twist slightly
> >>> sometimes allowing shaft contact as well. The old screwdriver end held to
> >>> the ear trick will help find the source. Just a thought.
> >>>> On 14/05/2015 10:28 PM, "Graeme Clark" <cg at skyflyer.co.uk> wrote:
> >>>> 
> >>>> Jeff
> >>>> 
> >>>> New mounts fitted as the  rear starboard original had become disbonded
> >>> due
> >>>> to a diesel leak onto the rubber. They were 18 years old original to
> >> the
> >>>> boat, anyway!  All the correct spec mounts in the correct place!
> >>>> 
> >>>> BUT -  they aren't Yanmar mounts. They are made by a  company called
> >> R&D
> >>>> as a direct replacement and I chose them because the design protects
> >>>> against a  similar problem as they are shielded and the rubber is
> >>> inserted
> >>>> into the mount not bonded to it.
> >>>> 
> >>>> There is a page on the Yanmar site about using non-Yanmar mounts and it
> >>>> does mention that “other makes’ can be stiffer which increase vibration
> >>> at
> >>>> lower rpms.
> >>>> 
> >>>> The tacho is spot on, calibration, (I have a laser tachometer that I
> >> used
> >>>> on the crank pulley to check). So at 1000 rpm its in fine form, at 800
> >>> its
> >>>> shuddering away!
> >>>> 
> >>>> One thing someone else suggested was to check that with higher
> >> amplitude
> >>>> vibrations it is possible that some part of the engine actually touches
> >>> the
> >>>> boat; I’ll have to check next time I am on board.
> >>>> 
> >>>> So really my question is whether it is normal for the engine to shake
> >>>> around a lot at low revs, rather than for the boat itself to shudder.
> >>>> 
> >>>> The other thing I am unsure of is how the governor works - mine
> >> maintains
> >>>> a set RPM when the boat is out of gear or if the boat is in gear, but
> >>> when
> >>>> you transfer from neutral to forward gear, obviously the engine comes
> >>> under
> >>>> load, and the rpm drops requiring more throttle.
> >>>> 
> >>>> I don't know if this is expected behaviour or not?
> >>>> 
> >>>> Thanks
> >>>> 
> >>>> Graeme
> >>>> 
> >>>> 
> >>>> 
> >>>> 
> >>>> On 13 May 2015, at 23:24, Graeme Clark <cg at skyflyer.co.uk> wrote:
> >>>> 
> >>>>>> Hi,
> >>>>> 
> >>>>> It depends.  Do you feel boat vibration, or are you just seeing the
> >>>> engine
> >>>>> "rocking" in its mounts?  If you feel the boat shuddering, then this
> >> is
> >>>> not
> >>>>> normal, and *usually* indicates that the idle is too low.  If the
> >>> engine
> >>>>> "looks" like it's vibrating a lot in its mounts, that's probably ok
> >> as
> >>>> long
> >>>>> as the prop shaft isn't bouncing all over. Some shaft movement is to
> >> be
> >>>>> expected at idle however.
> >>>>> 
> >>>>> The engine is supposed to oscillate (rotate/rock side to side) in
> >> line
> >>>> with
> >>>>> the prop shaft.  (imagine the prop shaft extending through the engine
> >>> and
> >>>>> out the front and attached to fixed mounts at both ends. The engine
> >>> will
> >>>>> pivot side to side around this shaft, more so when at a low idle, and
> >>>> when
> >>>>> revved up, it should appear to be much more stationary).  The Yanmar
> >>>> rocks
> >>>>> quite a bit at idle, but gets more smooth as you increase the speed.
> >>>>> 
> >>>>> So, if the tach reads 1000 and you feel the boat shuddering, the idle
> >>> is
> >>>> too
> >>>>> low and your tachometer is probably reading a little high.  Increase
> >>> the
> >>>>> idle by adjusting the governor (on the cable right below the engine
> >>>> mounted
> >>>>> fuel filter).  If the tach is correct and it only smooths out (stops
> >>>>> shuddering) at higher RPM, your engine mounts may be shot.  Another
> >>>> thing to
> >>>>> notice is if you rapidly back the throttle down to idle position and
> >>> the
> >>>>> engine shudders or nearly stalls then again, your idle setting is too
> >>>> low.
> >>>>> 
> >>>>> Cheers!
> >>>>> -Jeff Hare
> >>>>> #809
> >>