Re: Stus-List Coupling bolts shearing

2018-05-24 Thread detroito91 via CnC-List 
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
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Re: Stus-List Coupling bolts shearing

2018-05-24 Thread Dreuge via CnC-List 
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><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 
> <mailto:cnc-list@cnc-list.com>>
> Cc: Russ & Melody <russ...@telus.net 
> <mailto:russ...@telus.net><mailto: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

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Re: Stus-List Coupling bolts shearing

2018-05-24 Thread detroito91 via CnC-List 
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


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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread Russ & Melody via CnC-List 


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



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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread svrebeccaleah via CnC-List 
If bolts are coming loose. I would drill heads for safety wire. Install with 
Red lock tight and safety wire so the wire gets tighter when bolts loosen. I 
keep a can of 0.032 dua stainless safety wire on board comes in handy for all 
sorts of projects. 


Doug Mountjoy Rebecca Leah LF39 POYC, WA.


 Original message From: Rick Brass via CnC-List 
<cnc-list@cnc-list.com> Date: 5/23/18  16:48  (GMT-08:00) To: 
cnc-list@cnc-list.com Cc: Rick Brass <rickbr...@earthlink.net> Subject: Re: 
Stus-List Coupling bolts shearing 
Jim’s boat has a Westerbeke 35D engine (3 cyl, 35HP) and Borg Warner BW7 
transmission, with the usual V drive arrangement of a LF38. Engine and 
transmission were both newly installed in 2010. Had 140 hours on engine when 
the boat was purchased in 2015. About 200 hours on it now, as Jim has said. 
Seal on the hydraulic pump in the Borg Warner transmission failed during the 
delivery from Charleston to Washington, NC in 2015 (seal had dried out during a 
couple of years when the engine only accumulated 4 hours of use by the PO, 
apparently). So the transmission was rebuilt at that time. There is a “damper” 
between the engine flywheel and the input shaft of the transmission. According 
to the illustration in the parts book, it looks sort of like the spring loaded 
pressure plate in a clutch arrangement. But it seems pretty unlikely that the 
damper would have failed with only 200 hours on the engine. The Walter v drive 
hasn’t got much space under it for the coupling, so Jim’s boat has a relatively 
small diameter coupling with 3 bolts in it.  As Jim has said, this is the 3rd 
time in two years that the bolts have sheared off. As he  has said, the 
feathering prop has been rebuilt, the shaft checked for straightness, bolts 
replaced (though there is a question whether the latest set is grade 5 or grade 
8), engine aligned repeatedly(and BTW the motor mounts are new), etc., etc., 
etc. Jim (and everyone else aware of the problem) is getting really frustrated. 
Rick BrassWashington, NC   From: CnC-List 
[mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Frank via CnC-List
Sent: Wednesday, May 23, 2018 3:39 PM
To: cnc-list@cnc-list.com
Cc: Frank <n...@comcast.net>
Subject: Re: Stus-List Coupling bolts shearing Jim, I have a 79 38LF, serial 
number 001.  I have had a similar problem.There were a combination of things 
that caused it.First, the engine was never bedded in the boat properly.  I had 
to cut the engine mounts and rebuild them so the engine could be aligned with 
the prop shaft.Second, I had the Paragon SAOV transmission and V-drive rebuilt. 
 Most of the internal components of both units were replaced.  The prior owner 
installed a used SAOD and connected the v-drive to it. (Making it a SAOV)But, 
most important, have you replaced the vibration damper connected to the output 
shaft of the engine?  It looks like a clutch plate but without the clutch 
material.  It is between the engine and the transmission.Mine looked good but 
upon a thorough inspection it was found to be trash!My problem turned out to be 
a combination of the above, several “boat yards” aligned the prop with the 
v-drive but in actuality, there was a significant amount of difference between 
the two causing the bolts on the coupling to loosen.There was enough play in 
the v-drive output for it to look good. I would suspect that your vibration 
damper is not doing it’s job. Frank Frank Noragon
S/V: Cool Change
C 38LF, s/n: 001
Rose City Yacht Club
Portland, Oregon From: detroito91 via CnC-List Sent: Wednesday, May 23, 2018 
11:48 AMTo: cnc-list@cnc-list.com ; Jim Schwartz Cc: detroito91 Subject: 
Stus-List Coupling bolts shearing 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. HELPLosing confidence in boat.ThanksJim 
schwartz SEA YA I 38 LF Washington nc 
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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread detroito91 via CnC-List 
Another good idea to checkJim
 Original message From: Josh Muckley via CnC-List 
<cnc-list@cnc-list.com> Date: 5/23/18  3:41 PM  (GMT-05:00) To: C List 
<cnc-list@cnc-list.com> Cc: Josh Muckley <muckl...@gmail.com> Subject: Re: 
Stus-List Coupling bolts shearing 
I sounds like having the bolts loosen is the root cause.
When I got my straight drive the coupler was held by carbon steel bolts with 
lock washers and nuts.  They never came loose.
When I added a vibration dampener the new bolts came with nylock nuts.  They 
advised torqing them to the correct spec.  I've never had them come loose 
either.
Lock nuts, lock washers, locktite, and/or the proper torque are the only 
suggestion I can provide based on your description.
Josh MuckleyS/V Sea Hawk 1989 C 37+Solomons, MD 
On Wed, May 23, 2018, 3:35 PM detroito91 via CnC-List <cnc-list@cnc-list.com> 
wrote:
The v-drive has a coupler holding the shaft . The bolts on the coupler loosen 
and then shear off. Fortunately only the bolts have been the only damageJi

 Original message From: ed vanderkruk <primeinter...@gmail.com> 
Date: 5/23/18  3:16 PM  (GMT-05:00) To: cnc-list@cnc-list.com Cc: Jim Schwartz 
<detroit...@aol.com> Subject: 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, <primeinter...@gmail.com> wrote:
When you say coupling bolts ... the bolts mounting the transmission to the bell 
housing?
Anyone check the transmission?

Ed
Prime Interest 1982 LF38Toronto
On Wed, May 23, 2018, 2:49 PM detroito91 via CnC-List, <cnc-list@cnc-list.com> 
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. HELPLosing confidence in boat.ThanksJim schwartz SEA YA I 38 LF 
Washington nc ___



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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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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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every one is greatly appreciated.  If you want to support the list - use PayPal 
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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread detroito91 via CnC-List 
Good idea. I will have that checked firstJim
 Original message From: Frank via CnC-List 
<cnc-list@cnc-list.com> Date: 5/23/18  3:38 PM  (GMT-05:00) To: 
cnc-list@cnc-list.com Cc: Frank <n...@comcast.net> Subject: Re: Stus-List 
Coupling bolts shearing 



Jim,
 
I have a 79 38LF, serial number 001.  I have had a similar 
problem.
There were a combination of things that caused it.
First, the engine was never bedded in the boat properly.  I had to cut 
the engine mounts and rebuild them so the engine could be aligned with the prop 
shaft.
Second, I had the Paragon SAOV transmission and V-drive rebuilt.  Most 
of the internal components of both units were replaced.  The prior owner 
installed a used SAOD and connected the v-drive to it. (Making it a SAOV)
But, most important, have you replaced the vibration damper connected to 
the output shaft of the engine?  It looks like a clutch plate but without 
the clutch material.  It is between the engine and the transmission.
Mine looked good but upon a thorough inspection it was found to be 
trash!
My problem turned out to be a combination of the above, several “boat 
yards” aligned the prop with the v-drive but in actuality, there was a 
significant amount of difference between the two causing the bolts on the 
coupling to loosen.
There was enough play in the v-drive output for it to look good.
 
I would suspect that your vibration damper is not doing it’s job.
 
Frank
 Frank Noragon
S/V: Cool Change
C 38LF, s/n: 
001
Rose City Yacht Club
Portland, Oregon



 

From: detroito91 via CnC-List 
Sent: Wednesday, May 23, 2018 11:48 AM
To: cnc-list@cnc-list.com ; Jim Schwartz 
Cc: detroito91 
Subject: Stus-List Coupling bolts shearing
 
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 


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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 Coupling bolts shearing

2018-05-23 Thread Rick Brass via CnC-List 
Jim’s boat has a Westerbeke 35D engine (3 cyl, 35HP) and Borg Warner BW7 
transmission, with the usual V drive arrangement of a LF38. Engine and 
transmission were both newly installed in 2010. Had 140 hours on engine when 
the boat was purchased in 2015. About 200 hours on it now, as Jim has said.

 

Seal on the hydraulic pump in the Borg Warner transmission failed during the 
delivery from Charleston to Washington, NC in 2015 (seal had dried out during a 
couple of years when the engine only accumulated 4 hours of use by the PO, 
apparently). So the transmission was rebuilt at that time.

 

There is a “damper” between the engine flywheel and the input shaft of the 
transmission. According to the illustration in the parts book, it looks sort of 
like the spring loaded pressure plate in a clutch arrangement. But it seems 
pretty unlikely that the damper would have failed with only 200 hours on the 
engine.

 

The Walter v drive hasn’t got much space under it for the coupling, so Jim’s 
boat has a relatively small diameter coupling with 3 bolts in it.  As Jim has 
said, this is the 3rd time in two years that the bolts have sheared off. As he  
has said, the feathering prop has been rebuilt, the shaft checked for 
straightness, bolts replaced (though there is a question whether the latest set 
is grade 5 or grade 8), engine aligned repeatedly(and BTW the motor mounts are 
new), etc., etc., etc. Jim (and everyone else aware of the problem) is getting 
really frustrated.

 

Rick Brass

Washington, NC

 

 

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Frank via 
CnC-List
Sent: Wednesday, May 23, 2018 3:39 PM
To: cnc-list@cnc-list.com
Cc: Frank <n...@comcast.net>
Subject: Re: Stus-List Coupling bolts shearing

 

Jim,

 

I have a 79 38LF, serial number 001.  I have had a similar problem.

There were a combination of things that caused it.

First, the engine was never bedded in the boat properly.  I had to cut the 
engine mounts and rebuild them so the engine could be aligned with the prop 
shaft.

Second, I had the Paragon SAOV transmission and V-drive rebuilt.  Most of the 
internal components of both units were replaced.  The prior owner installed a 
used SAOD and connected the v-drive to it. (Making it a SAOV)

But, most important, have you replaced the vibration damper connected to the 
output shaft of the engine?  It looks like a clutch plate but without the 
clutch material.  It is between the engine and the transmission.

Mine looked good but upon a thorough inspection it was found to be trash!

My problem turned out to be a combination of the above, several “boat yards” 
aligned the prop with the v-drive but in actuality, there was a significant 
amount of difference between the two causing the bolts on the coupling to 
loosen.

There was enough play in the v-drive output for it to look good.

 

I would suspect that your vibration damper is not doing it’s job.

 

Frank

 

Frank Noragon
S/V: Cool Change
C 38LF, s/n: 001
Rose City Yacht Club
Portland, Oregon

 

From: detroito91 via CnC-List 

Sent: Wednesday, May 23, 2018 11:48 AM

To: cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>  ; Jim Schwartz 

Cc: detroito91 

Subject: Stus-List Coupling bolts shearing

 

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 

  _  

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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread Josh Muckley via CnC-List 
I sounds like having the bolts loosen is the root cause.

When I got my straight drive the coupler was held by carbon steel bolts
with lock washers and nuts.  They never came loose.

When I added a vibration dampener the new bolts came with nylock nuts.
They advised torqing them to the correct spec.  I've never had them come
loose either.

Lock nuts, lock washers, locktite, and/or the proper torque are the only
suggestion I can provide based on your description.

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

On Wed, May 23, 2018, 3:35 PM detroito91 via CnC-List <cnc-list@cnc-list.com>
wrote:

> The v-drive has a coupler holding the shaft . The bolts on the coupler
> loosen and then shear off. Fortunately only the bolts have been the only
> damage
> Ji
>
>
>  Original message 
> From: ed vanderkruk <primeinter...@gmail.com>
> Date: 5/23/18 3:16 PM (GMT-05:00)
> To: cnc-list@cnc-list.com
> Cc: Jim Schwartz <detroit...@aol.com>
> Subject: 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, <primeinter...@gmail.com>
> 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, <
>> cnc-list@cnc-list.com> 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
>
>
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every one is greatly appreciated.  If you want to support the list - use PayPal 
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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread Frank via CnC-List 
Jim,

I have a 79 38LF, serial number 001.  I have had a similar problem.
There were a combination of things that caused it.
First, the engine was never bedded in the boat properly.  I had to cut the 
engine mounts and rebuild them so the engine could be aligned with the prop 
shaft.
Second, I had the Paragon SAOV transmission and V-drive rebuilt.  Most of the 
internal components of both units were replaced.  The prior owner installed a 
used SAOD and connected the v-drive to it. (Making it a SAOV)
But, most important, have you replaced the vibration damper connected to the 
output shaft of the engine?  It looks like a clutch plate but without the 
clutch material.  It is between the engine and the transmission.
Mine looked good but upon a thorough inspection it was found to be trash!
My problem turned out to be a combination of the above, several “boat yards” 
aligned the prop with the v-drive but in actuality, there was a significant 
amount of difference between the two causing the bolts on the coupling to 
loosen.
There was enough play in the v-drive output for it to look good.

I would suspect that your vibration damper is not doing it’s job.

Frank

Frank Noragon
S/V: Cool Change
C 38LF, s/n: 001
Rose City Yacht Club
Portland, Oregon


From: detroito91 via CnC-List 
Sent: Wednesday, May 23, 2018 11:48 AM
To: cnc-list@cnc-list.com ; Jim Schwartz 
Cc: detroito91 
Subject: Stus-List Coupling bolts shearing

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 



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 ___

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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread detroito91 via CnC-List 
The v-drive has a coupler holding the shaft . The bolts on the coupler loosen 
and then shear off. Fortunately only the bolts have been the only damageJi

 Original message From: ed vanderkruk <primeinter...@gmail.com> 
Date: 5/23/18  3:16 PM  (GMT-05:00) To: cnc-list@cnc-list.com Cc: Jim Schwartz 
<detroit...@aol.com> Subject: 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, <primeinter...@gmail.com> wrote:
When you say coupling bolts ... the bolts mounting the transmission to the bell 
housing?
Anyone check the transmission?

Ed
Prime Interest 1982 LF38Toronto
On Wed, May 23, 2018, 2:49 PM detroito91 via CnC-List, <cnc-list@cnc-list.com> 
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. HELPLosing confidence in boat.ThanksJim 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 
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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread ed vanderkruk via CnC-List 
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, <
> cnc-list@cnc-list.com> 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
>>
>>
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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 
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Re: Stus-List Coupling bolts shearing

2018-05-23 Thread ed vanderkruk via CnC-List 
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, <
cnc-list@cnc-list.com> 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

Stus-List Coupling bolts shearing

2018-05-23 Thread detroito91 via CnC-List 
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. HELPLosing confidence in boat.ThanksJim 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