Re: Stus-List strange noise

[Doug Mountjoy via CnC-List]

Thanks Dave, I didn't think about the transmission slipping. Doug Mountjoysv 
Rebecca Leah C Landfall 39Port Orchard yacht club
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Re: Stus-List strange noise

[Dave S via CnC-List]

When I first bought Windstar, I had a terrible, intermittent BANG - BANG -
BANG in fwd only.  To address, I consulted a local yard, to whom I paid
many many boat bucks to:

1)  Replace the very worn martec prop with a folding Gori.
2)  Replace tired (one cracked) motor mounts
3)  Replace shaft and cutlass bearing.
4)  Resecure strut.

This did not solve the problem.   (They kept the money.)I finally
figured out that it was the transmission slipping.   (basically a conical
male bronze hub mates with a corresponding female steel hub to engage the
engine.  when the surfaces glaze over time the necessary friction is
reduced and the mating surfaces slip.  Bang bang bang.

The fix took one afternoon, around $30 worth of materials.  I had the
transmission out, apart, surfaces lapped to deglaze, reassembled and
reinstalled back in the boat.  No issue since.

Dave









- Forwarded message --
From: John Irvin 
To: "cnc-list@cnc-list.com" 
Cc:
Bcc:
Date: Tue, 16 Jun 2020 13:15:26 +
Subject: Re: Stus-List strange noise
Adjustable prop with sticking blade?

Sent from my iPhone

On Jun 16, 2020, at 9:02 AM, Bill Coleman via CnC-List <
cnc-list@cnc-list.com> wrote:



That’s a good suggestion.  Also, the strut – but if it was shaking that
much, you would probably have water too!

My  rope cutter was making sounds last summer, with a missing bolt.



Bill Coleman

Erie PA



Maybe a loose shaft anode



On Tue, Jun 16, 2020 at 8:27 AM Robert Boyer via CnC-List <
cnc-list@cnc-list.com> wrote:

Maybe a failed motor mount?

Bob

Bob Boyer
s/v Rainy Days
C Landfall 38 (Hull # 230)
(Spending winters in the Bahamas, summers in Baltimore, and somewhere on
the ICW in between)
blog: dainyrays.blogspot.com
email: dainyr...@icloud.com

> On Jun 15, 2020, at 11:44 PM, Doug Mountjoy via CnC-List <
cnc-list@cnc-list.com> wrote:
>
> 
> HI All,
> The other day while motoring at about 6.5kts we noticed an intermittent
thumping near the stern. It sounded like a crab float was bouncing off of
the hull. we slowed and the noise became quieter. Thinking there was
actually something thumping on the hull we came to a complete stop and even
backed up some, no help. We spent the weekend anchored in Liberty Bay. on
the way home the same noise, I looked at the rudder quadrant and could not
see anything. Upon arrival back at my slip I dove on the boat and could not
see anything unusual.
> Any ideas would be greatly appreciated.
> Thanks in advance
>
> Doug
>
> --
> Douglas Mountjoy
> 253-208-1412
> Port Orchard YC, WA
> Rebecca Leah
> C LandFall 39
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each
and every one is greatly appreciated.  If you want to support the list -
use PayPal to send contribution --   https://www.paypal.me/stumurray
>

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Stus-List strange noise

[Doug Mountjoy via CnC-List]

HI All,
Thanks for the comments. There are some things I am definitely going to
check next time out. I don't have a strut, and the noise is random. I had
the prop overhauled in Dec. Not sure if the Max prop blades will stick. I
noticed yesterday that I am going to have to haul out for new bottom paint
in the near future. That will be a good time to replace bearing and look at
the shaft.

Thanks
Doug

-- 
Douglas Mountjoy
253-208-1412
Port Orchard YC, WA
Rebecca Leah
C LandFall 39
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Re: Stus-List strange noise

[Jack Fitzgerald via CnC-List]

Likely a failing cutlass bearing. I had the same type of thumping noise
when running the engine. Increases and decreases with the throttle input.

Best regards,
Jack Fitzgerald
S/V HONEY - US12788
C 39TM (1974)

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On Tue, Jun 16, 2020 at 7:47 AM dwight veinot via CnC-List <
cnc-list@cnc-list.com> wrote:

> Maybe a loose shaft anode
>
> On Tue, Jun 16, 2020 at 8:27 AM Robert Boyer via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
>> Maybe a failed motor mount?
>>
>> Bob
>>
>> Bob Boyer
>> s/v Rainy Days
>> C Landfall 38 (Hull # 230)
>> (Spending winters in the Bahamas, summers in Baltimore, and somewhere on
>> the ICW in between)
>> blog: dainyrays.blogspot.com
>> email: dainyr...@icloud.com
>>
>> > On Jun 15, 2020, at 11:44 PM, Doug Mountjoy via CnC-List <
>> cnc-list@cnc-list.com> wrote:
>> >
>> > 
>> > HI All,
>> > The other day while motoring at about 6.5kts we noticed an intermittent
>> thumping near the stern. It sounded like a crab float was bouncing off of
>> the hull. we slowed and the noise became quieter. Thinking there was
>> actually something thumping on the hull we came to a complete stop and even
>> backed up some, no help. We spent the weekend anchored in Liberty Bay. on
>> the way home the same noise, I looked at the rudder quadrant and could not
>> see anything. Upon arrival back at my slip I dove on the boat and could not
>> see anything unusual.
>> > Any ideas would be greatly appreciated.
>> > Thanks in advance
>> >
>> > Doug
>> >
>> > --
>> > Douglas Mountjoy
>> > 253-208-1412
>> > Port Orchard YC, WA
>> > Rebecca Leah
>> > C LandFall 39
>> > ___
>> >
>> > Thanks everyone for supporting this list with your contributions.  Each
>> and every one is greatly appreciated.  If you want to support the list -
>> use PayPal to send contribution --   https://www.paypal.me/stumurray
>> >
>>
>> ___
>>
>> Thanks everyone for supporting this list with your contributions.  Each
>> and every one is greatly appreciated.  If you want to support the list -
>> use PayPal to send contribution --   https://www.paypal.me/stumurray
>>
>> --
> Sent from Gmail Mobile
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each
> and every one is greatly appreciated.  If you want to support the list -
> use PayPal to send contribution --   https://www.paypal.me/stumurray
>
>
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Re: Stus-List strange noise

[John Irvin via CnC-List]

Adjustable prop with sticking blade?

Sent from my iPhone

On Jun 16, 2020, at 9:02 AM, Bill Coleman via CnC-List  
wrote:


That’s a good suggestion.  Also, the strut – but if it was shaking that much, 
you would probably have water too!
My  rope cutter was making sounds last summer, with a missing bolt.

Bill Coleman
Erie PA

Maybe a loose shaft anode

On Tue, Jun 16, 2020 at 8:27 AM Robert Boyer via CnC-List 
mailto:cnc-list@cnc-list.com>> wrote:
Maybe a failed motor mount?

Bob

Bob Boyer
s/v Rainy Days
C Landfall 38 (Hull # 230)
(Spending winters in the Bahamas, summers in Baltimore, and somewhere on the 
ICW in between)
blog: dainyrays.blogspot.com
email: dainyr...@icloud.com

> On Jun 15, 2020, at 11:44 PM, Doug Mountjoy via CnC-List 
> mailto:cnc-list@cnc-list.com>> wrote:
>
> 
> HI All,
> The other day while motoring at about 6.5kts we noticed an intermittent 
> thumping near the stern. It sounded like a crab float was bouncing off of the 
> hull. we slowed and the noise became quieter. Thinking there was actually 
> something thumping on the hull we came to a complete stop and even backed up 
> some, no help. We spent the weekend anchored in Liberty Bay. on the way home 
> the same noise, I looked at the rudder quadrant and could not see anything. 
> Upon arrival back at my slip I dove on the boat and could not see anything 
> unusual.
> Any ideas would be greatly appreciated.
> Thanks in advance
>
> Doug
>
> --
> Douglas Mountjoy
> 253-208-1412
> Port Orchard YC, WA
> Rebecca Leah
> C LandFall 39
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each and 
> every one is greatly appreciated.  If you want to support the list - use 
> PayPal to send contribution --   https://www.paypal.me/stumurray
>

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Re: Stus-List strange noise

[Bill Coleman via CnC-List]

That’s a good suggestion.  Also, the strut – but if it was shaking that much, 
you would probably have water too!

My  rope cutter was making sounds last summer, with a missing bolt.

 

Bill Coleman

Erie PA

 

Maybe a loose shaft anode

 

On Tue, Jun 16, 2020 at 8:27 AM Robert Boyer via CnC-List 
 wrote:

Maybe a failed motor mount?

Bob

Bob Boyer
s/v Rainy Days
C Landfall 38 (Hull # 230)
(Spending winters in the Bahamas, summers in Baltimore, and somewhere on the 
ICW in between)
blog: dainyrays.blogspot.com
email: dainyr...@icloud.com

> On Jun 15, 2020, at 11:44 PM, Doug Mountjoy via CnC-List 
>  wrote:
> 
> 
> HI All,
> The other day while motoring at about 6.5kts we noticed an intermittent 
> thumping near the stern. It sounded like a crab float was bouncing off of the 
> hull. we slowed and the noise became quieter. Thinking there was actually 
> something thumping on the hull we came to a complete stop and even backed up 
> some, no help. We spent the weekend anchored in Liberty Bay. on the way home 
> the same noise, I looked at the rudder quadrant and could not see anything. 
> Upon arrival back at my slip I dove on the boat and could not see anything 
> unusual. 
> Any ideas would be greatly appreciated. 
> Thanks in advance
> 
> Doug
> 
> -- 
> Douglas Mountjoy
> 253-208-1412
> Port Orchard YC, WA
> Rebecca Leah
> C LandFall 39
> ___
> 
> Thanks everyone for supporting this list with your contributions.  Each and 
> every one is greatly appreciated.  If you want to support the list - use 
> PayPal to send contribution --   https://www.paypal.me/stumurray
> 

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Re: Stus-List strange noise

[CHARLES SCHEAFFER via CnC-List]

Mermaid's swimming under your beautiful boat?

> On June 15, 2020 at 11:43 PM Doug Mountjoy via CnC-List 
>  wrote:
> 
> HI All,
> The other day while motoring at about 6.5kts we noticed an intermittent 
> thumping near the stern. It sounded like a crab float was bouncing off of the 
> hull. we slowed and the noise became quieter. Thinking there was actually 
> something thumping on the hull we came to a complete stop and even backed up 
> some, no help. We spent the weekend anchored in Liberty Bay. on the way home 
> the same noise, I looked at the rudder quadrant and could not see anything. 
> Upon arrival back at my slip I dove on the boat and could not see anything 
> unusual.
> Any ideas would be greatly appreciated.
> Thanks in advance
> 
> Doug
> 
> --
> Douglas Mountjoy
> 253-208-1412
> Port Orchard YC, WA
> Rebecca Leah
> C LandFall 39
> ___
> 
> Thanks everyone for supporting this list with your contributions. Each 
> and every one is greatly appreciated. If you want to support the list - use 
> PayPal to send contribution -- https://www.paypal.me/stumurray
> 
> 


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Re: Stus-List strange noise

[dwight veinot via CnC-List]

Maybe a loose shaft anode

On Tue, Jun 16, 2020 at 8:27 AM Robert Boyer via CnC-List <
cnc-list@cnc-list.com> wrote:

> Maybe a failed motor mount?
>
> Bob
>
> Bob Boyer
> s/v Rainy Days
> C Landfall 38 (Hull # 230)
> (Spending winters in the Bahamas, summers in Baltimore, and somewhere on
> the ICW in between)
> blog: dainyrays.blogspot.com
> email: dainyr...@icloud.com
>
> > On Jun 15, 2020, at 11:44 PM, Doug Mountjoy via CnC-List <
> cnc-list@cnc-list.com> wrote:
> >
> > 
> > HI All,
> > The other day while motoring at about 6.5kts we noticed an intermittent
> thumping near the stern. It sounded like a crab float was bouncing off of
> the hull. we slowed and the noise became quieter. Thinking there was
> actually something thumping on the hull we came to a complete stop and even
> backed up some, no help. We spent the weekend anchored in Liberty Bay. on
> the way home the same noise, I looked at the rudder quadrant and could not
> see anything. Upon arrival back at my slip I dove on the boat and could not
> see anything unusual.
> > Any ideas would be greatly appreciated.
> > Thanks in advance
> >
> > Doug
> >
> > --
> > Douglas Mountjoy
> > 253-208-1412
> > Port Orchard YC, WA
> > Rebecca Leah
> > C LandFall 39
> > ___
> >
> > Thanks everyone for supporting this list with your contributions.  Each
> and every one is greatly appreciated.  If you want to support the list -
> use PayPal to send contribution --   https://www.paypal.me/stumurray
> >
>
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each
> and every one is greatly appreciated.  If you want to support the list -
> use PayPal to send contribution --   https://www.paypal.me/stumurray
>
> --
Sent from Gmail Mobile
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Re: Stus-List strange noise

[Robert Boyer via CnC-List]

Maybe a failed motor mount?

Bob

Bob Boyer
s/v Rainy Days
C Landfall 38 (Hull # 230)
(Spending winters in the Bahamas, summers in Baltimore, and somewhere on the 
ICW in between)
blog: dainyrays.blogspot.com
email: dainyr...@icloud.com

> On Jun 15, 2020, at 11:44 PM, Doug Mountjoy via CnC-List 
>  wrote:
> 
> 
> HI All,
> The other day while motoring at about 6.5kts we noticed an intermittent 
> thumping near the stern. It sounded like a crab float was bouncing off of the 
> hull. we slowed and the noise became quieter. Thinking there was actually 
> something thumping on the hull we came to a complete stop and even backed up 
> some, no help. We spent the weekend anchored in Liberty Bay. on the way home 
> the same noise, I looked at the rudder quadrant and could not see anything. 
> Upon arrival back at my slip I dove on the boat and could not see anything 
> unusual. 
> Any ideas would be greatly appreciated. 
> Thanks in advance
> 
> Doug
> 
> -- 
> Douglas Mountjoy
> 253-208-1412
> Port Orchard YC, WA
> Rebecca Leah
> C LandFall 39
> ___
> 
> Thanks everyone for supporting this list with your contributions.  Each and 
> every one is greatly appreciated.  If you want to support the list - use 
> PayPal to send contribution --   https://www.paypal.me/stumurray
> 

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Re: Stus-List strange noise

[David Risch via CnC-List]

When running and it is thumping have someone put their hand on top of the 
rudder post.  If thumping originates from rudder they will feel it.  Another 
question.  Is it rhythmic or random.  Rhythmic connotes running gear.  Good 
luck.

Sent from my Android. Please forgive typos. Thank you.


From: CnC-List  on behalf of Doug Mountjoy via 
CnC-List 
Sent: Monday, June 15, 2020 11:43:57 PM
To: cnc-list@cnc-list.com 
Cc: Doug Mountjoy 
Subject: Stus-List strange noise

HI All,
The other day while motoring at about 6.5kts we noticed an intermittent 
thumping near the stern. It sounded like a crab float was bouncing off of the 
hull. we slowed and the noise became quieter. Thinking there was actually 
something thumping on the hull we came to a complete stop and even backed up 
some, no help. We spent the weekend anchored in Liberty Bay. on the way home 
the same noise, I looked at the rudder quadrant and could not see anything. 
Upon arrival back at my slip I dove on the boat and could not see anything 
unusual.
Any ideas would be greatly appreciated.
Thanks in advance

Doug

--
Douglas Mountjoy
253-208-1412
Port Orchard YC, WA
Rebecca Leah
C LandFall 39
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Stus-List strange noise

[Doug Mountjoy via CnC-List]

HI All,
The other day while motoring at about 6.5kts we noticed an intermittent
thumping near the stern. It sounded like a crab float was bouncing off of
the hull. we slowed and the noise became quieter. Thinking there was
actually something thumping on the hull we came to a complete stop and even
backed up some, no help. We spent the weekend anchored in Liberty Bay. on
the way home the same noise, I looked at the rudder quadrant and could not
see anything. Upon arrival back at my slip I dove on the boat and could not
see anything unusual.
Any ideas would be greatly appreciated.
Thanks in advance

Doug

-- 
Douglas Mountjoy
253-208-1412
Port Orchard YC, WA
Rebecca Leah
C LandFall 39
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