Re: Stus-List Mast pumping?

[Jim Watts via CnC-List]

We have had that problem with our 35 since we got it. My fix this summer
was to velcro an extended boathook to the shrouds on port, with the rubber
handle and rubber tips against the shrouds. Looks silly, but it worked.
http://i.imgur.com/nnfnQDR.jpg



Jim Watts
Paradigm Shift
C&C 35 Mk III
Victoria, BC

On 13 August 2017 at 18:49, Alan Liles via CnC-List 
wrote:

> I spent some time loosening and tightening mast related items. The spare
> genoa halyard had the most effect. When I eased it the mast shook a couple
> of times then settled down. There has been no vibrations since, although
> the conditions have changed as well. Thanks for all replies on a perplexing
> issue.
>
> Al Liles
> SV Elendil
> C&C 37/40+
> Vancouver
>
>
> On Aug 13, 2017, at 9:30 AM, Russ & Melody via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
>
> These things can be mysterious. Here's some more items to check:
>  www.briontoss.com/spartalk/showthread.php?p=6821
>
> Good luck with the quest.
>
> Cheers, Russ
> Sweet 35 mk-1
>
> At 02:27 AM 13/08/2017, you wrote:
>
> Loosen the backstay.
>
> On 8/13/2017 1:28 AM, Russ & Melody via CnC-List wrote:
>
>
> Hi Al,
>
> Hoist a fender up a halyard so it hangs somewhere between the upper &
> lower spreaders and is near or alongside the mast.
>
> Or, goggle vortex shedding and then after an hour or so of reading, see
> above.
>
> It's nothing to worry about. *Sweet *does this occasionally.
>
> Cheers, Russ
>
> At 08:55 PM 12/08/2017, you wrote:
>
> So I'm sitting at the dock with a 10 knot breeze on the beam and a strange
> pulsating noise begins. You can feel it through the boat. I go on deck and
> find it's the mast moving fore and aft at the middle. Thinking it strange I
> tighten the baby stay and it slows but doesn't stop. Anyone else have this
> happen? What to do?
>
> Cheers, Al
>
>
> ___
>
> This list is supported by the generous donations of our members. If you
> wish to make a contribution to offset our costs, please go to:
> https://www.paypal.me/stumurray
>
> All Contributions are greatly appreciated!
>
>
>
>
> ___
>
> This list is supported by the generous donations of our members. If you
> wish to make a contribution to offset our costs, please go to:
> https://www.paypal.me/stumurray
>
> All Contributions are greatly appreciated!
>
>
>
> ___
>
> This list is supported by the generous donations of our members. If you
> wish to make a contribution to offset our costs, please go to:
> https://www.paypal.me/stumurray
>
> All Contributions are greatly appreciated!
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> ___
>
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> All Contributions are greatly appreciated!
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>
> ___
>
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>
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Re: Stus-List Mast pumping?

[Alan Liles via CnC-List]

I spent some time loosening and tightening mast related items. The spare genoa 
halyard had the most effect. When I eased it the mast shook a couple of times 
then settled down. There has been no vibrations since, although the conditions 
have changed as well. Thanks for all replies on a perplexing issue. 

Al Liles
SV Elendil
C&C 37/40+
Vancouver 


> On Aug 13, 2017, at 9:30 AM, Russ & Melody via CnC-List 
>  wrote:
> 
> 
> These things can be mysterious. Here's some more items to check:
>  www.briontoss.com/spartalk/showthread.php?p=6821
> 
> Good luck with the quest.
> 
> Cheers, Russ
> Sweet 35 mk-1
> 
> At 02:27 AM 13/08/2017, you wrote:
> 
>> Loosen the backstay.
>> 
>>> On 8/13/2017 1:28 AM, Russ & Melody via CnC-List wrote:
>>> 
>>> Hi Al,
>>> 
>>> Hoist a fender up a halyard so it hangs somewhere between the upper & lower 
>>> spreaders and is near or alongside the mast.
>>> 
>>> Or, goggle vortex shedding and then after an hour or so of reading, see 
>>> above.
>>> 
>>> It's nothing to worry about. Sweet does this occasionally.
>>> 
>>> Cheers, Russ
>>> 
>>> At 08:55 PM 12/08/2017, you wrote:
 So I'm sitting at the dock with a 10 knot breeze on the beam and a strange 
 pulsating noise begins. You can feel it through the boat. I go on deck and 
 find it's the mast moving fore and aft at the middle. Thinking it strange 
 I tighten the baby stay and it slows but doesn't stop. Anyone else have 
 this happen? What to do?
 
 Cheers, Al
 
 
 ___
 
 This list is supported by the generous donations of our members. If you 
 wish to make a contribution to offset our costs, please go to:  
 https://www.paypal.me/stumurray
 
 All Contributions are greatly appreciated!
>>> 
>>> 
>>> 
>>> ___
>>> 
>>> This list is supported by the generous donations of our members. If you
>>> wish to make a contribution to offset our costs, please go to: 
>>> 
>>> https://www.paypal.me/stumurray
>>> 
>>> All Contributions are greatly appreciated!
>> 
>> 
>> ___
>> 
>> This list is supported by the generous donations of our members. If you wish 
>> to make a contribution to offset our costs, please go to:  
>> https://www.paypal.me/stumurray
>> 
>> All Contributions are greatly appreciated!
> ___
> 
> This list is supported by the generous donations of our members. If you wish 
> to make a contribution to offset our costs, please go to:  
> https://www.paypal.me/stumurray
> 
> All Contributions are greatly appreciated!
___

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make a contribution to offset our costs, please go to:  
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Re: Stus-List Mast pumping?

[Russ & Melody via CnC-List]

These things can be mysterious. Here's some more items to check:
www.briontoss.com/spartalk/showthread.php?p=6821

Good luck with the quest.

Cheers, Russ
Sweet 35 mk-1

At 02:27 AM 13/08/2017, you wrote:


Loosen the backstay.

On 8/13/2017 1:28 AM, Russ & Melody via CnC-List wrote:


Hi Al,

Hoist a fender up a halyard so it hangs somewhere between the upper 
& lower spreaders and is near or alongside the mast.


Or, goggle vortex shedding and then after an hour or so of reading, 
see above.


It's nothing to worry about. Sweet does this occasionally.

Cheers, Russ

At 08:55 PM 12/08/2017, you wrote:
So I'm sitting at the dock with a 10 knot breeze on the beam and a 
strange pulsating noise begins. You can feel it through the boat. 
I go on deck and find it's the mast moving fore and aft at the 
middle. Thinking it strange I tighten the baby stay and it slows 
but doesn't stop. Anyone else have this happen? What to do?


Cheers, Al


___

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If you wish to make a contribution to offset our costs, please go 
to:  https://www.paypal.me/stumurray


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___

This list is supported by the generous donations of our members. If 
you wish to make a contribution to offset our costs, please go 
to:  https://www.paypal.me/stumurray


All Contributions are greatly appreciated!




___

This list is supported by the generous donations of our members. If 
you wish to make a contribution to offset our costs, please go 
to:  https://www.paypal.me/stumurray


All Contributions are greatly appreciated!
___

This list is supported by the generous donations of our members. If you wish to 
make a contribution to offset our costs, please go to:  
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All Contributions are greatly appreciated!

Re: Stus-List Mast pumping?

[Josh Muckley via CnC-List]

The 37+ mast was rigged with check stays and/or running backs to help
stabilize the mast against pumping.  If you harden up the babystay to pull
the belly of the mast forward and then firm up the backstay and set the
check stays you should be able to find a combination that sufficiently
stabilizes the mast.

This is all predicated on the assumption that the rig is properly tuned to
begin with.

Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD




On Aug 12, 2017 11:56 PM, "Alan Liles via CnC-List" 
wrote:

> So I'm sitting at the dock with a 10 knot breeze on the beam and a strange
> pulsating noise begins. You can feel it through the boat. I go on deck and
> find it's the mast moving fore and aft at the middle. Thinking it strange I
> tighten the baby stay and it slows but doesn't stop. Anyone else have this
> happen? What to do?
>
> Cheers, Al
>
>
> ___
>
> This list is supported by the generous donations of our members. If you
> wish to make a contribution to offset our costs, please go to:
> https://www.paypal.me/stumurray
>
> All Contributions are greatly appreciated!
>
___

This list is supported by the generous donations of our members. If you wish to 
make a contribution to offset our costs, please go to:  
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Re: Stus-List Mast pumping?

[Mark Smith via CnC-List]

Loosen the backstay.


On 8/13/2017 1:28 AM, Russ & Melody via CnC-List wrote:


Hi Al,

Hoist a fender up a halyard so it hangs somewhere between the upper & 
lower spreaders and is near or alongside the mast.


Or, goggle vortex shedding and then after an hour or so of reading, 
see above.


It's nothing to worry about. */Sweet /*does this occasionally.

Cheers, Russ

At 08:55 PM 12/08/2017, you wrote:
So I'm sitting at the dock with a 10 knot breeze on the beam and a 
strange pulsating noise begins. You can feel it through the boat. I 
go on deck and find it's the mast moving fore and aft at the middle. 
Thinking it strange I tighten the baby stay and it slows but doesn't 
stop. Anyone else have this happen? What to do?


Cheers, Al


___

This list is supported by the generous donations of our members. If 
you wish to make a contribution to offset our costs, please go to: 
https://www.paypal.me/stumurray 


All Contributions are greatly appreciated!



___

This list is supported by the generous donations of our members. If you wish to 
make a contribution to offset our costs, please go to:  
https://www.paypal.me/stumurray

All Contributions are greatly appreciated!


___

This list is supported by the generous donations of our members. If you wish to 
make a contribution to offset our costs, please go to:  
https://www.paypal.me/stumurray

All Contributions are greatly appreciated!

Re: Stus-List Mast pumping?

[Russ & Melody via CnC-List]

Hi Al,

Hoist a fender up a halyard so it hangs somewhere between the upper & 
lower spreaders and is near or alongside the mast.


Or, goggle vortex shedding and then after an hour or so of reading, see above.

It's nothing to worry about. Sweet does this occasionally.

Cheers, Russ

At 08:55 PM 12/08/2017, you wrote:
So I'm sitting at the dock with a 10 knot breeze on the beam and a 
strange pulsating noise begins. You can feel it through the boat. I 
go on deck and find it's the mast moving fore and aft at the middle. 
Thinking it strange I tighten the baby stay and it slows but doesn't 
stop. Anyone else have this happen? What to do?


Cheers, Al


___

This list is supported by the generous donations of our members. If 
you wish to make a contribution to offset our costs, please go 
to:  https://www.paypal.me/stumurray


All Contributions are greatly appreciated!
___

This list is supported by the generous donations of our members. If you wish to 
make a contribution to offset our costs, please go to:  
https://www.paypal.me/stumurray

All Contributions are greatly appreciated!

Re: Stus-List Mast pumping?

[Alan Liles via CnC-List]

Sorry, forgot to mention it's a C&C37/40+. 

Al Liles
SV Elendil
Vancouver 


> On Aug 12, 2017, at 8:55 PM, Alan Liles via CnC-List  
> wrote:
> 
> do?

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