Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[Marek Dziedzic via CnC-List]

I also use Shell’s Rotella. The weight would depend on the temperatures your 
engine is to endure. However, our engines are hardly ever running overly hot 
(shouldn’t). Rotella T 15W40 should meet more than you need.

Marek
1994 C270 (Perkins M20)
Ottawa, ON

From: CnC-List <cnc-list-boun...@cnc-list.com> On Behalf Of Matthew L. Wolford 
via CnC-List
Sent: Saturday, May 26, 2018 09:12
To: cnc-list@cnc-list.com
Cc: Matthew L. Wolford <wolf...@erie.net>
Subject: Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

Not sure of the weight for my Westerbeke (will look), but I use Shell Rotella 
heavy duty oil for diesel engines.  Don’t use the regular stuff.

From: detroito91 via CnC-List<mailto:cnc-list@cnc-list.com>
Sent: Friday, May 25, 2018 10:03 PM
To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
Cc: detroito91<mailto:detroit...@aol.com>
Subject: Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

To all the 38LF 's out there
  What weight oil in the westerbeak engine and what weight oil in the v-drive.
Thanks to you all.  Test runs start at 8am!
Have a good memorial day. Thanks to all us veterans.

Jim Schwartz
38LF
SEA YA!
Washington nc

 Original message 
From: detroito91 via CnC-List 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Date: 5/25/18 6:31 PM (GMT-05:00)
To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
Cc: detroito91 <detroit...@aol.com<mailto:detroit...@aol.com>>
Subject: Re: Stus-List [EXTERNAL]   Re:  Coupling bolts shearing

Thanks.
First step is today...grade 10. Previous bolts were grade 5.
I do like the idea of having someone look at the old bolts. They were 3 months 
old.
Jim

 Original message 
From: "Della Barba, Joe via CnC-List" 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Date: 5/24/18 12:59 PM (GMT-05:00)
To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
Cc: "Della Barba, Joe" <joe.della.ba...@ssa.gov<mailto:joe.della.ba...@ssa.gov>>
Subject: Re: Stus-List [EXTERNAL]   Re:  Coupling bolts shearing

Once you get your new bolts in, get someone to shift F-N-R while you watch the 
engine and motor mounts. See if one or more of the mounts is allowing excess 
movement.
For once I am glad to not have rubber motor mounts, my engine is hard-bolted to 
the boat.
Joe
Coquina



From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of detroito91 
via CnC-List
Sent: Thursday, May 24, 2018 12:29 PM
To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
Cc: detroito91 <detroit...@aol.com<mailto:detroit...@aol.com>>; Dreuge 
<dre...@gmail.com<mailto:dre...@gmail.com>>
Subject: [EXTERNAL] Re: Stus-List Coupling bolts shearing

Great suggestions.  Will do. Was planning on grade 8 bolts.
Can do alot of thinking during my 6 hour tow back to my slip!
Thanks jim

 Original message 
From: Dreuge via CnC-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Date: 5/24/18 11:07 AM (GMT-05:00)
To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
Cc: Dreuge <dre...@gmail.com<mailto:dre...@gmail.com>>
Subject: Re: Stus-List Coupling bolts shearing

When I was installing my rebuilt Yanmar 3QM30, I called the folks at 
Transmission Marine Inc in Fort Lauderdale, FL for some advice (and I needed to 
purchase a replacement dipstick for the paragon).  They strongly stressed the 
importance of precise shaft alignment to avoid future problems.  First 
mentioned was the Walter v-drive seals failing is not properly aligned.   I 
spent plenty of time aligning using feeler gauges on all sides of the coupler.  
After the first year, I verified the alignment.   So far, I have not have any 
issues with the v-drive coupler.

I would NOT recommend stainless steel bolts.  As I recall, stainless has less 
than 25% of the sheer strength compared to a grade 8 bolt.  Grade 8 bolts are 
industry standard for demanding applications such as automotive suspensions.  I 
used nickel anti-seize on the bolts and keep the coupler painted and corrosion 
free.


-
Paul E.
1981 C 38 Landfall
S/V Johanna Rose
Fort Walton Beach, FL

http://svjohannarose.blogspot.com/<https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fsvjohannarose.blogspot.com%2F=02%7C01%7C%7C8f700d104ac547d9086f08d5c30a50f0%7C84df9e7fe9f640afb435%7C1%7C0%7C636629371426305952=ntE3kmFrHT1lzqQytYyKZlGFxRjVxlJlIedyZnchJeg%3D=0>

On May 24, 2018, at 8:20 AM, 
cnc-list-requ...@cnc-list.com<mailto:cnc-list-requ...@cnc-list.com> wrote:

From: Russ & Melody via CnC-List 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com><mailto:cnc-list@cnc-list.com>>
Date: 5/24/18 12:37 AM (GMT-05:00)
To: 
cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com><mailto:cnc-list@cnc-list.com>
Cc: Russ & Melody 
<russ...@telus.net<mailto:r

Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[Matthew L. Wolford via CnC-List]

Not sure of the weight for my Westerbeke (will look), but I use Shell Rotella 
heavy duty oil for diesel engines.  Don’t use the regular stuff.

From: detroito91 via CnC-List 
Sent: Friday, May 25, 2018 10:03 PM
To: cnc-list@cnc-list.com 
Cc: detroito91 
Subject: Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

To all the 38LF 's out there  
  What weight oil in the westerbeak engine and what weight oil in the v-drive.
Thanks to you all.  Test runs start at 8am!
Have a good memorial day. Thanks to all us veterans. 

Jim Schwartz 
38LF 
SEA YA!
Washington nc

 Original message 
From: detroito91 via CnC-List <cnc-list@cnc-list.com> 
Date: 5/25/18 6:31 PM (GMT-05:00) 
To: cnc-list@cnc-list.com 
Cc: detroito91 <detroit...@aol.com> 
Subject: Re: Stus-List [EXTERNAL]   Re:  Coupling bolts shearing 

Thanks. 
First step is today...grade 10. Previous bolts were grade 5.
I do like the idea of having someone look at the old bolts. They were 3 months 
old.
Jim

 Original message 
From: "Della Barba, Joe via CnC-List" <cnc-list@cnc-list.com> 
Date: 5/24/18 12:59 PM (GMT-05:00) 
To: cnc-list@cnc-list.com 
Cc: "Della Barba, Joe" <joe.della.ba...@ssa.gov> 
Subject: Re: Stus-List [EXTERNAL]   Re:  Coupling bolts shearing 

Once you get your new bolts in, get someone to shift F-N-R while you watch the 
engine and motor mounts. See if one or more of the mounts is allowing excess 
movement.

For once I am glad to not have rubber motor mounts, my engine is hard-bolted to 
the boat.

Joe

Coquina

 

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of detroito91 
via CnC-List
Sent: Thursday, May 24, 2018 12:29 PM
To: cnc-list@cnc-list.com
Cc: detroito91 <detroit...@aol.com>; Dreuge <dre...@gmail.com>
Subject: [EXTERNAL] Re: Stus-List Coupling bolts shearing

 

Great suggestions.  Will do. Was planning on grade 8 bolts.

Can do alot of thinking during my 6 hour tow back to my slip!

Thanks jim

 

 Original message 

From: Dreuge via CnC-List <cnc-list@cnc-list.com> 

Date: 5/24/18 11:07 AM (GMT-05:00) 

To: cnc-list@cnc-list.com 

Cc: Dreuge <dre...@gmail.com> 

Subject: Re: Stus-List Coupling bolts shearing 

 

When I was installing my rebuilt Yanmar 3QM30, I called the folks at 
Transmission Marine Inc in Fort Lauderdale, FL for some advice (and I needed to 
purchase a replacement dipstick for the paragon).  They strongly stressed the 
importance of precise shaft alignment to avoid future problems.  First 
mentioned was the Walter v-drive seals failing is not properly aligned.   I 
spent plenty of time aligning using feeler gauges on all sides of the coupler.  
After the first year, I verified the alignment.   So far, I have not have any 
issues with the v-drive coupler.  

 

I would NOT recommend stainless steel bolts.  As I recall, stainless has less 
than 25% of the sheer strength compared to a grade 8 bolt.  Grade 8 bolts are 
industry standard for demanding applications such as automotive suspensions.  I 
used nickel anti-seize on the bolts and keep the coupler painted and corrosion 
free.  

 

 

-
Paul E.

1981 C 38 Landfall 
S/V Johanna Rose
Fort Walton Beach, FL

 

http://svjohannarose.blogspot.com/





  On May 24, 2018, at 8:20 AM, cnc-list-requ...@cnc-list.com wrote:

   

  From: Russ & Melody via CnC-List 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
  Date: 5/24/18 12:37 AM (GMT-05:00)
  To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
  Cc: Russ & Melody <russ...@telus.net<mailto:russ...@telus.net>>
  Subject: Re: Stus-List Coupling bolts shearing


  Hi Jim,

  My first question is, "Did someone recommend and use stainless steel bolts, 
say 316L, as the "best" for marine application?"

 Cheers, Russ
 Sweet 35mk-1


  At 11:48 AM 5/23/2018, you wrote:

  The boat in question is an 81 landfall 38.
  The v-drive coupling bolts have sheared off 3 times and caused loss of power.
  Have been very careful to pause when changing gears.
  The westerbeak engine runs great throughout all this. The shaft removed and 
checked after the second  time. The 2 bladed max prop sent back and rebuilt. 
New motor mounts installed by po when replacing engine. About 4 years ago (<200 
hours on engine) coupling. Allignment done each time and found okay.
  I am looking for advice,  suggestions, similar situations and corrections. 
HELP
  Losing confidence in boat.
  Thanks
  Jim schwartz
  SEA YA I
  38 LF
  Washington nc

 




___

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

_

Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[detroito91 via CnC-List]

To all the 38LF 's out there   What weight oil in the westerbeak engine and 
what weight oil in the v-drive.Thanks to you all.  Test runs start at 8am!Have 
a good memorial day. Thanks to all us veterans. 
Jim Schwartz 38LF SEA YA!Washington nc
 Original message From: detroito91 via CnC-List 
<cnc-list@cnc-list.com> Date: 5/25/18  6:31 PM  (GMT-05:00) To: 
cnc-list@cnc-list.com Cc: detroito91 <detroit...@aol.com> Subject: Re: 
Stus-List [EXTERNAL]   Re:  Coupling bolts shearing 
Thanks.First step is today...grade 10. Previous bolts were grade 5.I do like 
the idea of having someone look at the old bolts. They were 3 months old.Jim
 Original message From: "Della Barba, Joe via CnC-List" 
<cnc-list@cnc-list.com> Date: 5/24/18  12:59 PM  (GMT-05:00) To: 
cnc-list@cnc-list.com Cc: "Della Barba, Joe" <joe.della.ba...@ssa.gov> Subject: 
Re: Stus-List [EXTERNAL]   Re:  Coupling bolts shearing 


Once you get your new bolts in, get someone to shift F-N-R while you watch the 
engine and motor mounts. See if one or more of the mounts is allowing excess 
movement.
For once I am glad to not have rubber motor mounts, my engine is hard-bolted to 
the boat.
Joe
Coquina
 
 


From: CnC-List [mailto:cnc-list-boun...@cnc-list.com]
On Behalf Of detroito91 via CnC-List

Sent: Thursday, May 24, 2018 12:29 PM

To: cnc-list@cnc-list.com

Cc: detroito91 <detroit...@aol.com>; Dreuge <dre...@gmail.com>

Subject: [EXTERNAL] Re: Stus-List Coupling bolts shearing


 
Great suggestions.  Will do. Was planning on grade 8 bolts.

Can do alot of thinking during my 6 hour tow back to my slip!


Thanks jim


 



 Original message 


From: Dreuge via CnC-List <cnc-list@cnc-list.com>



Date: 5/24/18 11:07 AM (GMT-05:00)



To: 
cnc-list@cnc-list.com 


Cc: Dreuge <dre...@gmail.com>



Subject: Re: Stus-List Coupling bolts shearing



 



When I was installing my rebuilt Yanmar 3QM30, I called the folks at 
Transmission Marine Inc in Fort Lauderdale, FL for some advice (and I needed to 
purchase a replacement dipstick for the paragon).  They strongly stressed the 
importance
 of precise shaft alignment to avoid future problems.  First mentioned was the 
Walter v-drive seals failing is not properly aligned.   I spent plenty of time 
aligning using feeler gauges on all sides of the coupler.  After the first 
year, I verified the alignment.
   So far, I have not have any issues with the v-drive coupler.  


 


I would NOT recommend stainless steel bolts.  As I recall, stainless has less 
than 25% of the sheer strength compared to a grade 8 bolt.  Grade 8 bolts are 
industry standard for demanding applications such as automotive suspensions.  I
 used nickel anti-seize on the bolts and keep the coupler painted and corrosion 
free.  


 

 





-

Paul E.


1981 C 38 Landfall 

S/V Johanna Rose

Fort Walton Beach, FL


 


http://svjohannarose.blogspot.com/













On May 24, 2018, at 8:20 AM, 
cnc-list-requ...@cnc-list.com wrote:

 

From: Russ & Melody via CnC-List 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>

Date: 5/24/18 12:37 AM (GMT-05:00)

To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>

Cc: Russ & Melody <russ...@telus.net<mailto:russ...@telus.net>>

Subject: Re: Stus-List Coupling bolts shearing





Hi Jim,



My first question is, "Did someone recommend and use stainless steel bolts, say 
316L, as the "best" for marine application?"



   Cheers, Russ

   Sweet 35mk-1





At 11:48 AM 5/23/2018, you wrote:



The boat in question is an 81 landfall 38.

The v-drive coupling bolts have sheared off 3 times and caused loss of power.

Have been very careful to pause when changing gears.

The westerbeak engine runs great throughout all this. The shaft removed and 
checked after the second  time. The 2 bladed max prop sent back and rebuilt. 
New motor mounts installed by po when replacing engine. About 4 years ago (<200 
hours on engine) coupling.
 Allignment done each time and found okay.

I am looking for advice,  suggestions, similar situations and corrections. HELP

Losing confidence in boat.

Thanks

Jim schwartz

SEA YA I

38 LF

Washington nc



 

___

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

Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[detroito91 via CnC-List]

Thanks.First step is today...grade 10. Previous bolts were grade 5.I do like 
the idea of having someone look at the old bolts. They were 3 months old.Jim
 Original message From: "Della Barba, Joe via CnC-List" 
<cnc-list@cnc-list.com> Date: 5/24/18  12:59 PM  (GMT-05:00) To: 
cnc-list@cnc-list.com Cc: "Della Barba, Joe" <joe.della.ba...@ssa.gov> Subject: 
Re: Stus-List [EXTERNAL]   Re:  Coupling bolts shearing 


Once you get your new bolts in, get someone to shift F-N-R while you watch the 
engine and motor mounts. See if one or more of the mounts is allowing excess 
movement.
For once I am glad to not have rubber motor mounts, my engine is hard-bolted to 
the boat.
Joe
Coquina
 
 


From: CnC-List [mailto:cnc-list-boun...@cnc-list.com]
On Behalf Of detroito91 via CnC-List

Sent: Thursday, May 24, 2018 12:29 PM

To: cnc-list@cnc-list.com

Cc: detroito91 <detroit...@aol.com>; Dreuge <dre...@gmail.com>

Subject: [EXTERNAL] Re: Stus-List Coupling bolts shearing


 
Great suggestions.  Will do. Was planning on grade 8 bolts.

Can do alot of thinking during my 6 hour tow back to my slip!


Thanks jim


 



 Original message 


From: Dreuge via CnC-List <cnc-list@cnc-list.com>



Date: 5/24/18 11:07 AM (GMT-05:00)



To: 
cnc-list@cnc-list.com 


Cc: Dreuge <dre...@gmail.com>



Subject: Re: Stus-List Coupling bolts shearing



 



When I was installing my rebuilt Yanmar 3QM30, I called the folks at 
Transmission Marine Inc in Fort Lauderdale, FL for some advice (and I needed to 
purchase a replacement dipstick for the paragon).  They strongly stressed the 
importance
 of precise shaft alignment to avoid future problems.  First mentioned was the 
Walter v-drive seals failing is not properly aligned.   I spent plenty of time 
aligning using feeler gauges on all sides of the coupler.  After the first 
year, I verified the alignment.
   So far, I have not have any issues with the v-drive coupler.  


 


I would NOT recommend stainless steel bolts.  As I recall, stainless has less 
than 25% of the sheer strength compared to a grade 8 bolt.  Grade 8 bolts are 
industry standard for demanding applications such as automotive suspensions.  I
 used nickel anti-seize on the bolts and keep the coupler painted and corrosion 
free.  


 

 





-

Paul E.


1981 C 38 Landfall 

S/V Johanna Rose

Fort Walton Beach, FL


 


http://svjohannarose.blogspot.com/













On May 24, 2018, at 8:20 AM, 
cnc-list-requ...@cnc-list.com wrote:

 

From: Russ & Melody via CnC-List 
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>

Date: 5/24/18 12:37 AM (GMT-05:00)

To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>

Cc: Russ & Melody <russ...@telus.net<mailto:russ...@telus.net>>

Subject: Re: Stus-List Coupling bolts shearing





Hi Jim,



My first question is, "Did someone recommend and use stainless steel bolts, say 
316L, as the "best" for marine application?"



   Cheers, Russ

   Sweet 35mk-1





At 11:48 AM 5/23/2018, you wrote:



The boat in question is an 81 landfall 38.

The v-drive coupling bolts have sheared off 3 times and caused loss of power.

Have been very careful to pause when changing gears.

The westerbeak engine runs great throughout all this. The shaft removed and 
checked after the second  time. The 2 bladed max prop sent back and rebuilt. 
New motor mounts installed by po when replacing engine. About 4 years ago (<200 
hours on engine) coupling.
 Allignment done each time and found okay.

I am looking for advice,  suggestions, similar situations and corrections. HELP

Losing confidence in boat.

Thanks

Jim schwartz

SEA YA I

38 LF

Washington nc



 

___

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

Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[Della Barba, Joe via CnC-List]

Once you get your new bolts in, get someone to shift F-N-R while you watch the 
engine and motor mounts. See if one or more of the mounts is allowing excess 
movement.
For once I am glad to not have rubber motor mounts, my engine is hard-bolted to 
the boat.
Joe
Coquina



From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of detroito91 
via CnC-List
Sent: Thursday, May 24, 2018 12:29 PM
To: cnc-list@cnc-list.com
Cc: detroito91 ; Dreuge 
Subject: [EXTERNAL] Re: Stus-List Coupling bolts shearing

Great suggestions.  Will do. Was planning on grade 8 bolts.
Can do alot of thinking during my 6 hour tow back to my slip!
Thanks jim

 Original message 
From: Dreuge via CnC-List >
Date: 5/24/18 11:07 AM (GMT-05:00)
To: cnc-list@cnc-list.com
Cc: Dreuge >
Subject: Re: Stus-List Coupling bolts shearing

When I was installing my rebuilt Yanmar 3QM30, I called the folks at 
Transmission Marine Inc in Fort Lauderdale, FL for some advice (and I needed to 
purchase a replacement dipstick for the paragon).  They strongly stressed the 
importance of precise shaft alignment to avoid future problems.  First 
mentioned was the Walter v-drive seals failing is not properly aligned.   I 
spent plenty of time aligning using feeler gauges on all sides of the coupler.  
After the first year, I verified the alignment.   So far, I have not have any 
issues with the v-drive coupler.

I would NOT recommend stainless steel bolts.  As I recall, stainless has less 
than 25% of the sheer strength compared to a grade 8 bolt.  Grade 8 bolts are 
industry standard for demanding applications such as automotive suspensions.  I 
used nickel anti-seize on the bolts and keep the coupler painted and corrosion 
free.


-
Paul E.
1981 C 38 Landfall
S/V Johanna Rose
Fort Walton Beach, FL

http://svjohannarose.blogspot.com/


On May 24, 2018, at 8:20 AM, 
cnc-list-requ...@cnc-list.com wrote:

From: Russ & Melody via CnC-List 
>
Date: 5/24/18 12:37 AM (GMT-05:00)
To: 
cnc-list@cnc-list.com
Cc: Russ & Melody 
>
Subject: Re: Stus-List Coupling bolts shearing


Hi Jim,

My first question is, "Did someone recommend and use stainless steel bolts, say 
316L, as the "best" for marine application?"

   Cheers, Russ
   Sweet 35mk-1


At 11:48 AM 5/23/2018, you wrote:

The boat in question is an 81 landfall 38.
The v-drive coupling bolts have sheared off 3 times and caused loss of power.
Have been very careful to pause when changing gears.
The westerbeak engine runs great throughout all this. The shaft removed and 
checked after the second  time. The 2 bladed max prop sent back and rebuilt. 
New motor mounts installed by po when replacing engine. About 4 years ago (<200 
hours on engine) coupling. Allignment done each time and found okay.
I am looking for advice,  suggestions, similar situations and corrections. HELP
Losing confidence in boat.
Thanks
Jim schwartz
SEA YA I
38 LF
Washington nc

___

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

Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[schiller via CnC-List]

Joe brings up a good point.  Have someone look at the failed bolts.  It 
should be evident as to whether the failure was shear or fatigue due to 
a misaligned engine or twisting due to broken motor mount.


The failed surfaces will look different between a shear failure and low 
cycle fatigue.


Neil Schiller
1983 C 35-3, #028
"Grace"
Whitehall, Michigan
WLYC

On 5/24/2018 8:20 AM, Della Barba, Joe via CnC-List wrote:


Back when I worked on boats we tried EVERYTHING – new bolts, better 
bolts, safety wire, etc etc. to solve an issue like this.


What turned out to be the issue was one bad motor mount that let the 
engine yank way out of position going into gear.


Joe

Coquina

*From:*CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of 
*detroito91 via CnC-List

*Sent:* Thursday, May 24, 2018 6:09 AM
*To:* cnc-list@cnc-list.com
*Cc:* detroito91 
*Subject:* [EXTERNAL] Re: Stus-List Coupling bolts shearing

No..but i'm going to follow up on that. Used grade 8.

Jim

 Original message 

From: Russ & Melody via CnC-List >


Date: 5/24/18 12:37 AM (GMT-05:00)

To: cnc-list@cnc-list.com 

Cc: Russ & Melody >

Subject: Re: Stus-List Coupling bolts shearing


Hi Jim,

My first question is, "Did someone recommend and use stainless steel 
bolts, say 316L, as the "best" for marine application?"


Cheers, Russ
/Sweet /35mk-1


At 11:48 AM 5/23/2018, you wrote:

The boat in question is an 81 landfall 38.
The v-drive coupling bolts have sheared off 3 times and caused
loss of power.
Have been very careful to pause when changing gears.
The westerbeak engine runs great throughout all this. The shaft
removed and checked after the second  time. The 2 bladed max prop
sent back and rebuilt. New motor mounts installed by po when
replacing engine. About 4 years ago (<200 hours on engine)
coupling. Allignment done each time and found okay.
I am looking for advice,  suggestions, similar situations and
corrections. HELP
Losing confidence in boat.
Thanks
Jim schwartz
SEA YA I
38 LF
Washington nc





Virus-free. www.avg.com 
 





___

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

Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[Russ & Melody via CnC-List]

Set a couple o' dial indicators on the v-drive,
near the coupling, and cycle her in & out of
gear. The dial indicators will show any
deflection and the amount. You might have to move
them around and try different angles to get the full picture.

Cheers, Russ

At 05:20 AM 5/24/2018, you wrote:

Content-Language: en-US
Content-Type: multipart/alternative;
boundary="_000_b707fc99bda54becb67743b7509e2d18NSCDAG306baadssagov_"

Back when I worked on boats we tried EVERYTHING
– new bolts, better bolts, safetyy wire, etc etc. to solve an issue like this.
What turned out to be the issue was one bad
motor mount that let the engine yank way out of position going into gear.
Joe
Coquina

From: CnC-List
[mailto:cnc-list-boun...@cnc-list.com] On Behalf Of detroito91 via CnC-List
Sent: Thursday, May 24, 2018 6:09 AM
To: cnc-list@cnc-list.com
Cc: detroito91 
Subject: [EXTERNAL] Re: Stus-List Coupling bolts shearing

No..but i'm going to follow up on that. Used grade 8.
Jim

 Original message 
From: Russ & Melody via CnC-List
<cnc-list@cnc-list.com>
Date: 5/24/18 12:37 AM (GMT-05:00)
To: cnc-list@cnc-list.com
Cc: Russ & Melody <russ...@telus.net>
Subject: Re: Stus-List Coupling bolts shearing


Hi Jim,

My first question is, "Did someone recommend and
use stainless steel bolts, say 316L, as the "best" for marine application?"

Cheers, Russ
Sweet 35mk-1


At 11:48 AM 5/23/2018, you wrote:

The boat in question is an 81 landfall 38.
The v-drive coupling bolts have sheared off 3 times and caused loss of power.
Have been very careful to pause when changing gears.
The westerbeak engine runs great throughout all
this. The shaft removed and checked after the
second  time. The 2 bladed max prop sent back
and rebuilt. New motor mounts installed by po
when replacing engine. About 4 years ago (<200
hours on engine) coupling. Allignment done each time and found okay.
I am looking for advice,  suggestions, similar
situations and corrections. HELP
Losing confidence in boat.
Thanks
Jim schwartz
SEA YA I
38 LF
Washington nc



[]

Virus-free.
www.avg.com


___

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



---
This email has been checked for viruses by AVG.
http://www.avg.com
___

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

Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[Della Barba, Joe via CnC-List]

Back when I worked on boats we tried EVERYTHING – new bolts, better bolts, 
safety wire, etc etc. to solve an issue like this.
What turned out to be the issue was one bad motor mount that let the engine 
yank way out of position going into gear.
Joe
Coquina

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of detroito91 
via CnC-List
Sent: Thursday, May 24, 2018 6:09 AM
To: cnc-list@cnc-list.com
Cc: detroito91 
Subject: [EXTERNAL] Re: Stus-List Coupling bolts shearing

No..but i'm going to follow up on that. Used grade 8.
Jim

 Original message 
From: Russ & Melody via CnC-List 
>
Date: 5/24/18 12:37 AM (GMT-05:00)
To: cnc-list@cnc-list.com
Cc: Russ & Melody >
Subject: Re: Stus-List Coupling bolts shearing


Hi Jim,

My first question is, "Did someone recommend and use stainless steel bolts, say 
316L, as the "best" for marine application?"

Cheers, Russ
Sweet 35mk-1


At 11:48 AM 5/23/2018, you wrote:

The boat in question is an 81 landfall 38.
The v-drive coupling bolts have sheared off 3 times and caused loss of power.
Have been very careful to pause when changing gears.
The westerbeak engine runs great throughout all this. The shaft removed and 
checked after the second  time. The 2 bladed max prop sent back and rebuilt. 
New motor mounts installed by po when replacing engine. About 4 years ago (<200 
hours on engine) coupling. Allignment done each time and found okay.
I am looking for advice,  suggestions, similar situations and corrections. HELP
Losing confidence in boat.
Thanks
Jim schwartz
SEA YA I
38 LF
Washington nc

[https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png]

Virus-free. 
www.avg.com


___

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

Re: Stus-List [EXTERNAL] Re: Coupling bolts shearing

[Della Barba, Joe via CnC-List]

!Check your motor mounts!
They can be sheared through or very loose and look OK when not in gear. When 
you go to shift, the engine shifts on the bad mount(s) and shears the bolts.

Joe
Coquina

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of ed 
vanderkruk via CnC-List
Sent: Wednesday, May 23, 2018 3:17 PM
To: cnc-list@cnc-list.com
Cc: ed vanderkruk 
Subject: [EXTERNAL] Re: Stus-List Coupling bolts shearing

You have a keyway in the shaft and transmission coupling?

Ed

On Wed, May 23, 2018, 3:14 PM ed vanderkruk, 
> wrote:
When you say coupling bolts ... the bolts mounting the transmission to the bell 
housing?

Anyone check the transmission?


Ed

Prime Interest
1982 LF38
Toronto

On Wed, May 23, 2018, 2:49 PM detroito91 via CnC-List, 
> wrote:
The boat in question is an 81 landfall 38.
The v-drive coupling bolts have sheared off 3 times and caused loss of power.
Have been very careful to pause when changing gears.
The westerbeak engine runs great throughout all this. The shaft removed and 
checked after the second  time. The 2 bladed max prop sent back and rebuilt. 
New motor mounts installed by po when replacing engine. About 4 years ago (<200 
hours on engine) coupling. Allignment done each time and found okay.
I am looking for advice,  suggestions, similar situations and corrections. HELP
Losing confidence in boat.
Thanks
Jim schwartz
SEA YA I
38 LF
Washington nc
___

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