PYI has a spec for blade tightness. When it needs manufactured PYI has a
program for that which will cost you roughly 1/3 the cost of an new
max-prop.
Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD
On Thu, Sep 26, 2019, 11:26 AM Doug Mountjoy via CnC-List <
cnc-list@cnc-list.com> wrote:
>
I have a 3 blade Maxprop as well. It has worked well in forward and reverse.
Has anyone figured out a way to check its feathering action? I presume it is
feathering when sailing, but don’t know how to tell. The only thing I can
think of would be to sail to the mooring and then dive. Perhaps
Hey guys I fixed the subject line
I too have a Max-Prop and am fond of it though I have little experience
with alternatives. I service mine every year by replacing the zinc and
greasing it per the manufacturer's instructions.
Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD
On Mon, Jan 15,
Josh,
There is another C&C 37/40 in the yard with a Max prop. No play at all in
that prop.
--
Brian Fry
S/V La Neige
1993 C&C 37/40XL
HdG Maryland
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make a contribution
Thank you for the replies.
The shaft taper does not seem to be an issue.I placed the spinner housing
on the shaft without the key and with the key. The position of the housing
doesn't change at all.
The shaft key as you can see in the video is captured wholly within the
body of the prop "spinner" h
When you speek of "play" are you referring to wiggle between the blades,
or wiggle on the shaft, or somewhere else?
When I grab on blade and hold it still and then attempt to rotate either of
the other 2 blades they will rotate +or- ~1/16th of an inch. I've checked
this play every time it is out
I'm about to deliver a boat that had a max prop installed with the wrong key on
the shaft, which caused problems.
Andy
C&C 40
Peregrine
Andrew Burton
61 W Narragansett
Newport, RI
USA02840
http://sites.google.com/site/andrewburtonyachtservices/
+401 965-5260
> On Nov 30, 2016, at 16:32, Jo
Perhaps the shaft is not tapered properly?
Joel
On Wed, Nov 30, 2016 at 4:29 PM, Brian Fry via CnC-List <
cnc-list@cnc-list.com> wrote:
> I purchased La Neige last year. She has a 3 blade max prop folding prop.
> There was alot of slop/play and I removed it and sent it back to the
> manufacturer
via CnC-List
> Date: 3/27/2016 2:46 PM (GMT-05:00)
> To: cnc-list
> Cc: Ken Heaton
> Subject: Re: Stus-List Max prop angle
>
> This may just confuse thing as our engine is an atypical Yanmar Model:
> 3JH2-TBE so has a turbo and 47 Hp.
>
> Anyway, these are the specs on ou
Wow, you ought to be able to get up to eight knots with that setup.
Bill Coleman
Original message
From: Ken Heaton via CnC-List
Date: 3/27/2016 2:46 PM (GMT-05:00)
To: cnc-list
Cc: Ken Heaton
Subject: Re: Stus-List Max prop angle
This may just confuse thing
This may just confuse thing as our engine is an atypical Yanmar Model:
3JH2-TBE so has a turbo and 47 Hp.
Anyway, these are the specs on our prop and its pitch setting in inches (I
don't know what that translates to in degrees):
Propeller Make: “J” Prop, Marine Propeller s.r.l
Propeller Size:
Double check the size. I think mine is a 16" and I thought it was at 24°.
I also suggest getting a laser tach from Amazon. The Yanmar tachs are
notorious for being about 200 rpm slow. Mine was.
It sounds like you already know that the pitch can only be changed in 2°
increments and for every 2°
Give the people at PYI a shout with all the details: engine, reduction
gearing, and your boat specs. They will be able to get you far closer on
the first try.
Jim Watts
Paradigm Shift
C&C 35 Mk III
Victoria, BC
On 23 March 2016 at 19:18, David Knecht via CnC-List
wrote:
> Hi Brian- If this help
Hi Brian- If this helps, the MaxProp on my 34XL (+) is set to 16° according to
the information provided by the PO. I have not checked that myself. The
engine is a Universal M4-30. Dave
On Mar 23, 2016, at 7:45 PM, Brian Fry via CnC-List
wrote:
> I have a 3 blade Max Prop, 17". The surveyor
Brian,
When I adjust Calypso’s 3 Blade MAX prop 1 setting it seems to make a 10%
change in pitch/engine speed.
Some yards will make a deal during slow times to allow several hauls and
launches to test out the different pitch changes. The service guys at PYI may
be able to give you the most po
What Martin said...but I want to emphasize that you need to know your
engine model and the reduction gearing on your transmission and the
diameter of the prop *before* calling PYI.
They are very helpful and nailed the setting I should use first try. It was
only my lack of smarts that led me to usi
I recommend contacting PYI, Inc. and asking for assistance. Be sure to have
your MAX prop owner's manual or obtain another from PYI (often downloadable
from their web site). The manual will have a chart to indicate what the prop
is set at now and which way to go to reduce pitch.
I have chan
Sounds like you nailed it. I wouldn't change anything.
Joel
On Friday, August 15, 2014, Bill Hoyne via CnC-List
wrote:
> Hi
>
> The max RPM is 3200 and we could get to that value no problem, didn’t want
> to hold it there for too long, just a few minutes. We did a 20 min test at
> 3000 RPM wher
Hi
The max RPM is 3200 and we could get to that value no problem, didn’t want to
hold it there for too long, just a few minutes. We did a 20 min test at 3000
RPM where we held 6.8 knots. No problems were found and although very loud she
ran well. There was no current, wind or waves to speak o
uckley via CnC-List
Sent: August 15, 2014 2:30 PM
To: C&C List; Bill Hoyne
Subject: Re: Stus-List Max-Prop settings
Oh and resetting the pitch means another haul (more money). Live with it at
least till next season's haul.
Josh
On Aug 15, 2014 12:30 PM, "Bill Hoyne via CnC-Lis
Oh and resetting the pitch means another haul (more money). Live with it
at least till next season's haul.
Josh
On Aug 15, 2014 12:30 PM, "Bill Hoyne via CnC-List"
wrote:
> Hi All,
> Here are the results of my Max Prop issues.
>
> I have a C&C 35 Mk II with a Volvo Penta 2003 28hp with a 2.4:1
Be careful over pitching it cause continuously running the engine below 80%
of full load can cause other problems such as coking up the exhaust elbow
and glazing the cylinders. Lots of people like the idea of over pitching
the prop to run a little faster at a lower rpm. I say, the difference in
s
Bill,
Couple thoughts:
If you are getting a max of 3000 rpm you already have too much pitch. I
would not go up; I might go down one click.
You should cruise at 80% of max rpm or 2500-2600 rpm.
I have a 35/3 with a max-prop set to 14 degrees, but my reduction gear is
2.6:1 I get to 3500 rpm with
Hi All,
Here are the results of my Max Prop issues.
I have a C&C 35 Mk II with a Volvo Penta 2003 28hp with a 2.4:1 reduction MS2B
transmission max RPM is 3200. The prop is a left rotation. The Max Prop is 14”
and set to 24 deg (X=C, Y=E). This gives 11.6” pitch. The original settings
were way
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