[C320-list] Engine and Reefing Questions

[Chris Burti]

Can't help you on the temp as mine reads about 165 and seems happy. That is
a bit cooler than the consensus, but I choose to assume the guage is a bit
off.

On reefing, it depends on the size (it relly does matter) of your jenny. In
a steady 18 knots of wind, with both the 135% genny and the main depowered,
she sails well without reefing.

Depower the jenny by tightening the halyard and moving the sheet blocks aft.
This moves the draft forward and increases twist.

Depower the main by tightening the outhaul and halyard/cunningham. This
moves the draft forward and flattens the sail.

Then, moving the traveller down and easing the mainsheet eases the angle of
attack and increases twist.

After this, if she is heeling more than 15-20 degrees or rounding up in the
puffs, put areef in, she'll always sail faster on her feet anyway.



On 5/14/07, mike hunter <popotladreaming at yahoo.com> wrote:
>
> I'll start by saying I love this boat!  I have a couple of questions
> regarding engine temperature and what looked like steam coming out of the
> exhaust, but I'll get back to those in a bit.
>
> Friday afternoon we fueled up and went for a little cruise around the San
> Diego bay, running the engine at different RPMs.  We found another 'sweet
> spot' at 2800 and kept it there for roughly an hour.  The engine stayed at
> its normal operating temperature of just a hair below 180 degrees.
>
> Saturday morning we motor sailed to the mouth of the bay (~ 45 min.) and
> then proceeded to have a fantastic day of sailing.  It always feels so good
> to shut down the engine J.  That evening while coming in, we started the
> motor and motor sailed through the bay to the no wake zone then dropped the
> RPMs down to around 2000.  It was shortly after doing this my Wife noticed
> the temperature had risen to just a hair above 180 and there was what looked
> like steam coming out of the exhaust with the water.  She dropped the RPMs
> down to 1200 and I went below to check out the strainer.  The strainer had
> accumulated a little bit of debris but it was mostly clear.  When I came
> back up the temperature had dropped back down to normal and the 'steaming'
> had stopped.  It almost seemed like we sucked up something and then blew it
> out???
>
> My plan now is to clean the strainer, check the flow through the intake
> hose and inspect the water pump impeller - which I replaced 2 weeks ago.
>
> Finally, my engine questions:
>
> -         What is considered 'hot' for a Yanmar 3GM30F?
> -         Does the engine shut down when it reaches a certain temperature
> to prevent damage?
> -         Am I on the right path or is there something else I should look
> at?
>
> I also have a more important sailing question.  The wind varied from 8 –
> 12 knots throughout the day and the boat sailed beautifully.  At what wind
> speed do most of you reef?
>
> Thanks!
>
> Mike
> #637
>
>
> ---------------------------------
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-- 
Chris Burti
Farmville, NC