[Public-List] Propellers...

Gordon Laco via Public-List public-list at lists.alberg30.org
Mon Jun 6 07:15:39 PDT 2016 

That’s who I bought mine from...

Gord #426 Surprise



On 2016-06-06, 10:11 AM, "Jonathan Bresler" <262alberg30 at gmail.com> wrote:

> For anyone wondering, the URL for Campbell Sailor props appears to be
> www.westbynorth.com <http://www.westbynorth.com>
> 
> On Mon, Jun 6, 2016 at 9:01 AM, Gordon Laco via Public-List
> <public-list at lists.alberg30.org> wrote:
>> I wondered about that.  Well I reckon we’ll find out.  There’s weed in the
>> channels at our club toward the later part of the season... Well we’ll find
>> out.
>> 
>> Gord #426 Surprise
>> 
>> 
>> On 2016-06-06, 8:57 AM, "Jeffrey" <fongemie at gmail.com> wrote:
>> 
>>> > Hey Gord,
>>> >
>>> > I put a Campbell on my boat 4 years ago, and I too like it for the same
>>> > reasons you mention, however one down side I notice is that the smallest
>>> bit
>>> > of seaweed caught on a blade will just about stop us.  Lots of seaweed in
>>> > Maine, and often we're cruising along at 5+ when all of a sudden a
>>> vibration
>>> > wells up and our speed drops to 2 kts.  Reversing sometimes helps shake it
>>> > loose but ultimately a hook knife is needed.  
>>> >
>>> > Before the CS prop, we had a large 3 blade that would power through
>>> anything
>>> > anytime. It likely cost us speed sailing, but I hardly ever needed to
>>> clean
>>> > out seaweed from it.  
>>> >
>>> >
>>> >
>>> > Seagrass. #116
>>> > Boothbay Harbor, Maine
>>> > http://sailboatseagrass.com/
>>> >
>>> >  <http://instagram.com/jfongemie>
>>> >
>>> > On Sun, Jun 5, 2016 at 2:12 PM, Gordon Laco via Public-List
>>> > <public-list at lists.alberg30.org> wrote:
>>>> >> Hi Don
>>>> >>
>>>> >> It's 3x as per Campbell standard for our boats.  Pitch and diameter are
>>>> also
>>>> >> as per their advertised standard made for our boats, engines and
>>>> transmission
>>>> >> ratio
>>>> >>
>>>> >> G
>>>> >>
>>>> >> On 2016-06-05, at 2:01 PM, "Don Campbell" <dk.campbell at xplornet.ca>
>>>> wrote:
>>>> >>
>>>>>> >>> > The only things you have not given us is the diameter and pitch of
this
>>>>> >>> new machine! I am guessing a two blade because of your comment on the
>>>>> stock
>>>>> >>> blade from Whitby B.W. but not sure on that either.
>>>>>> >>> > Don Campbell
>>>>>> >>> >
>>>>>> >>> > -----Original Message----- From: Gordon Laco via Public-List
>>>>>> >>> > Sent: Sunday, June 05, 2016 11:44 AM
>>>>>> >>> > To: George Dinwiddie ; Alberg 30 Public List -- open to all
>>>>>> >>> > Subject: Re: [Public-List] Propellers...
>>>>>> >>> >
>>>>>> >>> > Thanks,
>>>>>> >>> >
>>>>>> >>> > Caroline laughed at me over the battery charger/charge state
>>>>>> thing.  When
>> I
>>>>>> >>> > noticed it had clicked off, I assumed a malfunction so went into
>>>>>> 'grumpy
>>>>>> >>> > Gord' mode.... 'damned thing, what next, knew something would go
>>>>>> wrong,
>>>>> >>> hate
>>>>>> >>> > batteries, when I am going to find time to fix this, probably five
>>>>>> things
>>>>>> >>> > wrong, not just one...' etc etc  until I realized that the issue
>>>>>> was that
>>>>>> >>> > the batteries were indeed fully charged...
>>>>>> >>> >
>>>>>> >>> >
>>>>>> >>> > On 2016-06-05, 11:11 AM, "George Dinwiddie via Public-List"
>>>>>> >>> > <public-list at lists.alberg30.org> wrote:
>>>>>> >>> >
>>>>>>>> >>>> >> Sounds like a complete win, Gord.
>>>>>>>> >>>> >>
>>>>>>>> >>>> >> On 6/5/16 10:42 AM, Gordon Laco via Public-List wrote:
>>>>>>>>>> >>>>> >>> Hello friends,
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> I¹m sorry to reintroduce this topic... But I¹ve changed
>>>>>>>>>> propellers and
>>>>>>>>>> >>>>> >>> thought I¹d share the experience.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> Some of you may recall that I have pontificated about
>>>>>>>>>> taking a Œdon¹t
>>>>>>>>>> >>>>> >>> change¹ position with regard to the prop supplied by Whitby
Boatworks
>>>>>>> >>>>> with
>>>>>>>>>> >>>>> >>> the Atomic IV engines many of our boats have.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> Well this spring I was thinking about the engine and
>>>>>>>>>> decided to try a
>>>>>>>>>> >>>>> >>> change.  Last fall¹s ŒMisery Trip¹ reached a crescendo of
suffering
>>>>>>> >>>>> with a
>>>>>>>>>> >>>>> >>> slog to windward in 40 knot winds and a sharp chop...  We
>>>>>>>>>> were nearly
>>>>>>>>>> >>>>> >>> stopped a few times, mostly by wave action, but SURPRISE
>>>>>>>>>> trudged along
>>>>>>> >>>>> and I
>>>>>>>>>> >>>>> >>> would say coped better than our companion¹s boats which
>>>>>>>>>> were all fin
>>>>>>> >>>>> keeled
>>>>>>>>>> >>>>> >>> yachts fitted with diesels.    So power delivered to the
>>>>>>>>>> water wasn¹t
>> the
>>>>>>>>>> >>>>> >>> issue... What I was thinking about was alternator
>>>>>>>>>> performance and
>>>>>>> >>>>> cooling.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> Cooling has never been an issue with our engine,
>>>>>>>>>> particularly since I
>>>>>>>>>> >>>>> >>> replaced the old water pump with the upgrade offered by
Moyer. 
>>>>>>> >>>>> However I¹ve
>>>>>>>>>> >>>>> >>> been keenly aware that our cruising RPM of about 1000
>>>>>>>>>> doesn¹t really
>>>>>>> >>>>> spin
>>>>>>>>>> >>>>> >>> things down in the engine compartment fast enough to
>>>>>>>>>> deliver what the
>>>>>>>>>> >>>>> >>> alternator is theoretically capable of.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> I liked the look of the narrowed bladed ŒCampbell¹ props
>>>>>>>>>> I¹d seen on
>>>>>>> >>>>> other
>>>>>>>>>> >>>>> >>> boats, and liked the idea of increasing revs while at least
keeping
>>>>>>> >>>>> the same
>>>>>>>>>> >>>>> >>> Œpower in the water¹ situation the stock two bladed prop
>>>>>>>>>> gave us.  So
>> I
>>>>>>>>>> >>>>> >>> ordered the Campbell which they recommend for Alberg 30¹s
>>>>>>>>>> fitted with
>>>>>>> >>>>> Atomic
>>>>>>>>>> >>>>> >>> IV engines with 1:1 transmissions.    The vendor said he
>>>>>>>>>> was certain
>>>>>>> >>>>> what
>>>>>>>>>> >>>>> >>> shaft diameter and taper my boat has... But because I¹m a
>>>>>>>>>> doubter, I
>>>>>>> >>>>> sent
>>>>>>>>>> >>>>> >>> him my old prop for reference.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> In due course the new prop came back along with the old one
(and he
>> was
>>>>>>>>>> >>>>> >>> right, he did already know the specs).  I couldn¹t wait to
>>>>>>>>>> try it out.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> We installed the new prop as part of my condensed spring
>>>>>>>>>> outfitting
>>>>>>> >>>>> (and no,
>>>>>>>>>> >>>>> >>> I did not do the cap rail job I wrote about earlier.  I got
busy with
>>>>>>> >>>>> work
>>>>>>>>>> >>>>> >>> which took me away most of April and May so that¹s that on
that job
>> for
>>>>>>>>>> >>>>> >>> now).  Eagle eyed Rod saw the shiny new thing and commented
>>>>>>>>>> ŒI thought
>> you
>>>>>>>>>> >>>>> >>> said...¹     Well I know what I said, but what the heck...
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> We got SURPRISE into the water and after securing the rig,
>>>>>>>>>> started up
>> and
>>>>>>>>>> >>>>> >>> started the two hour trip back to our sailing club.  First
thing I
>>>>>>> >>>>> noticed
>>>>>>>>>> >>>>> >>> was that I seemed to have a lot more power in reverse than
before. 
>> The
>>>>>>>>>> >>>>> >>> second thing was that prop walk seemed to have
>>>>>>>>>> dissappeared...
>>>>>>> >>>>> Amazing.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> The only negative comment I¹d read about these props on
>>>>>>>>>> line referred
>>>>>>> >>>>> to a
>>>>>>>>>> >>>>> >>> supposed loss of maneuvring power... But I was able to do
the usual
>>>>>>> >>>>> spin
>>>>>>>>>> >>>>> >>> within her length that SURPRISE normally does.    Motoring
out of
>>>>>>>>>> >>>>> >>> Dutchman¹s Cove Marina, I found that our speed at idle was
>>>>>>>>>> lower, and
>>>>>>> >>>>> that¹s
>>>>>>>>>> >>>>> >>> a good thing of course not unexpected because of the finer
pitch. 
>>>>>>> >>>>> Once out
>>>>>>>>>> >>>>> >>> past the breakwater, we opened the throttle and both
>>>>>>>>>> Caroline and I
>>>>>>> >>>>> were
>>>>>>>>>> >>>>> >>> amazed.  Boat speed climbed to 6.6 knots as usual for full
throttle,
>> but
>>>>>>>>>> >>>>> >>> there was no roar and vibration from the engine.  I won¹t
>>>>>>>>>> say it was
>> as
>>>>>>>>>> >>>>> >>> quiet as electric, but the change from how things were was
startling
>> and
>>>>>>>>>> >>>>> >>> dramatic.   We were so quiet at full speed I mistrusted the
knotmeter
>> and
>>>>>>>>>> >>>>> >>> fired up the GPS, but it confirmed the speed.  Amazing.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> We found our old cruising speed of 5.2 at 1000rpm was now
>>>>>>>>>> 5.2 at 1400
>>>>>>> >>>>> (this
>>>>>>>>>> >>>>> >>> second RPM was full out open throttle with the old prop).
Yes the
>>>>>>> >>>>> engine was
>>>>>>>>>> >>>>> >>> spinning faster, but at the same throttle setting and
>>>>>>>>>> clearly not
>>>>>>> >>>>> labouring
>>>>>>>>>> >>>>> >>> quite so hard.   The boat was so quiet we didn¹t feel like
we were
>>>>>>> >>>>> moving,
>>>>>>>>>> >>>>> >>> so we did the trip at 6+.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> So the prop change is rated a total success.  But there was
>>>>>>>>>> a surprise
>> in
>>>>>>>>>> >>>>> >>> store for us.  Because I was away so much I didn¹t do my
usual
>>>>>>> >>>>> thorough
>>>>>>>>>> >>>>> >>> recharge of the batteries... We started up after launch on
what was
>>>>>>> >>>>> left in
>>>>>>>>>> >>>>> >>> the batteries after the Misery Trip and months of winter
>>>>>>>>>> lay up.   I
>> was
>>>>>>>>>> >>>>> >>> glad there seemed to be enough juice to spin the engine.
>>>>>>>>>> >>>>> >>> Yesterday I decided to connect up the battery charger and
>>>>>>>>>> run it all
>>>>>>> >>>>> day...
>>>>>>>>>> >>>>> >>> But after only moments, the charger was indicating full
>>>>>>>>>> charge.  I
>>>>>>> >>>>> assumed a
>>>>>>>>>> >>>>> >>> problem with the charger but after investigating, realized
that the
>>>>>>>>>> >>>>> >>> Œproblem¹ was that the battery bank was indeed fully
>>>>>>>>>> charged and the
>>>>>>>>>> >>>>> >>> automatic function on the charger was sensing this and
>>>>>>>>>> shutting off.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> How could that be, I thought... Then it occurred to me that
the
>>>>>>> >>>>> alternator
>>>>>>>>>> >>>>> >>> must have run up the batteries on the trip over from the
>>>>>>>>>> marina.  In
>>>>>>> >>>>> the old
>>>>>>>>>> >>>>> >>> days, the alternator barely kept up with the engine¹s
>>>>>>>>>> requirements and
>> I¹d
>>>>>>>>>> >>>>> >>> had to charge from shore power periodically.  So it appears
that
>>>>>>> >>>>> whatever
>>>>>>>>>> >>>>> >>> was in the batteries at launch, the engine itself topped
>>>>>>>>>> them up in
>>>>>>> >>>>> the 90
>>>>>>>>>> >>>>> >>> minute shot over under power (wasn¹t two hours because we
galloped
>>>>>>> >>>>> home
>>>>>>>>>> >>>>> >>> faster).
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> Happy happy.
>>>>>>>>>> >>>>> >>>
>>>>>>>>>> >>>>> >>> Gord #426 Surprise
>>>>>> >>> >
>>>>>> >>> >
>>>>>> >>> > _______________________________________________
>>>>>> >>> > These businesses support your Association:
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>>>>>> >>> > Please support them.
>>>>>> >>> > _______________________________________________
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>>>>>> >>> > Public-List at lists.alberg30.org
>>>>>> >>> > http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>> >> _______________________________________________
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>>> >
>>> >
>> 
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