Stus-List Re: A4 Slips Out of Gear

[Tom Buscaglia via CnC-List]

A well earned victory!

At 03:51 PM 4/29/2021, you wrote:
Well, almost five years later, I finally did 
this clutch adjustment, following the procedure 
in the Moyer manual.  The actual adjustment was 
pretty straightforward; no problems there except 
the contortions required to access the gearbox 
from the lazarets of a 30 MK I.  I turned the 
adjustment collar only one notch.  However it 
was a bit of a struggle to get everything 
reassembled.  I had to re-tap one of the bolt 
holes to make its bolt thread.  And I had to 
disconnect the shift cable to get the starboard 
two bolts aligned through its angle iron and 
gearbox access plate, then re-connect the shift 
cable ensuring correct adjustment.  But, good 
news, last night I pushed her throttle wide open 
with five guys on board, and drove her at 6+ 
knots under power.  I haven’t been able to do 
that since buying the boat - before, her clutch 
would slip beyond half-throttle.


Cheers,
Randy Stafford
S/V Grenadine
C 30 MK I #79
Ken Caryl, CO

On Sep 3, 2016, at 9:53 AM, Ken Walters via 
CnC-List <cnc-list@cnc-list.com> wrote:


Randy,
Probably a pretty straight forward  adjustment 
in the gear box. Mine did this when I bought it 
and a knowledgable A4 mechanic fixed it in 
about an hour after unknowledgeable mechanics 
dorked around for many hours on cables, props, 
etc. and many hundreds of dollars. There is 
definitely help to be had on the Moyer forums 
for this exact issue. It is also covered in 
detail on the Moyer A4 overhaul manual.


If you are handy you can fix it yourself in 
about 30 minutes. You take off the gearbox 
cover plate, remove a set screw that holds a 
clutch ring/collar thing in place, rotate ring 
one way or the other one notch, put screw back 
in, do not drop screw down inside gearbox, test 
it out. It may make getting the engine in or 
out of gear a bit harder, there is a trade off. 
There is also an after market collar with 
notches closer together to avoid the too much too little issue.
There are times when you need to know that you 
have maximum thrust - like when you are about 
to ram another boat or dock. To my mind this is 
a serious safety issue. A young, strong crewman 
fended my stern off when this happened to me 
while backing out of my slip in high wind. I 
parked the boat immediately and called a yard with A4 experience.
If you cannot find the adjustment instructions 
on the Moyer site, contact me off list and I will send you a PDF.

Ken
33-1 '75 A4



Created on a small keyboard with fat fingers...


On Sep 3, 2016, at 11:17 AM, Josh Muckley via 
CnC-List <cnc-list@cnc-list.com> wrote:


You may find that the engine is moving 
independent of the shift cable.  With 
older/softer engine mounts the thrust may be 
moving the engine closer/further from the 
cable.  Most cables are attached to the engine 
so this doesn't happen but if the cable of 
mount is broken or failing it may be causing 
the problem.  Get a partner to create the 
problem while you are watching the engine.


It could also be as simple as adjusting the cable.

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

On Sep 3, 2016 10:23 AM, "Randy Stafford via 
CnC-List" <cnc-list@cnc-list.com> wrote:

Listers-

My Atomic-4 slips out of gear in forward if I 
open the throttle too much, especially under 
heavy load. It's not really a problem, because 
I don't need that much throttle. But I'm just 
wondering if this a common and fixable issue, or a safety feature, or what.


Cheers,
Randy

Sent from my iPhone

___

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donations of our members. If you like what we 
do, please help us pay for our costs by 
donating. All Contributions are greatly appreciated!


___

This list is supported by the generous 
donations of our members. If you like what we 
do, please help us pay for our costs by 
donating. All Contributions are greatly appreciated!

___

This list is supported by the generous 
donations of our members. If you like what we 
do, please help us pay for our costs by 
donating. All Contributions are greatly appreciated!


Thanks to all of the subscribers that 
contributed to the list to help with the costs 
involved.  If you want to show your support to 
the list - use PayPal to send contribution 
--   https://www.paypal.me/stumurray  Thanks - Stu


.¤º°`°º¤,¸¸,¤º°`°º¤¤º°`°º¤,¸¸,¤º°`°º¤.
Tom & Lynn Buscaglia
SV Alera
C 37+/40
Vashon Island WA
(206) 463-9200
www.sv-alera.com


Thanks to all of the subscribers that contributed to the list to help with the 
costs involved.  If you want to show your support to the list - use PayPal to 
send contribution --   https://www.paypal.me/stumurray  Thanks - Stu

Stus-List Re: A4 Slips Out of Gear

[Randal Stafford via CnC-List]

Well, almost five years later, I finally did this clutch adjustment, following 
the procedure in the Moyer manual.  The actual adjustment was pretty 
straightforward; no problems there except the contortions required to access 
the gearbox from the lazarets of a 30 MK I.  I turned the adjustment collar 
only one notch.  However it was a bit of a struggle to get everything 
reassembled.  I had to re-tap one of the bolt holes to make its bolt thread.  
And I had to disconnect the shift cable to get the starboard two bolts aligned 
through its angle iron and gearbox access plate, then re-connect the shift 
cable ensuring correct adjustment.  But, good news, last night I pushed her 
throttle wide open with five guys on board, and drove her at 6+ knots under 
power.  I haven’t been able to do that since buying the boat - before, her 
clutch would slip beyond half-throttle.

Cheers,
Randy Stafford
S/V Grenadine
C 30 MK I #79
Ken Caryl, CO

> On Sep 3, 2016, at 9:53 AM, Ken Walters via CnC-List  
> wrote:
> 
> Randy,
> Probably a pretty straight forward  adjustment in the gear box. Mine did this 
> when I bought it and a knowledgable A4 mechanic fixed it in about an hour 
> after unknowledgeable mechanics dorked around for many hours on cables, 
> props, etc. and many hundreds of dollars. There is definitely help to be had 
> on the Moyer forums for this exact issue. It is also covered in detail on the 
> Moyer A4 overhaul manual.
> 
> If you are handy you can fix it yourself in about 30 minutes. You take off 
> the gearbox cover plate, remove a set screw that holds a clutch ring/collar 
> thing in place, rotate ring one way or the other one notch, put screw back 
> in, do not drop screw down inside gearbox, test it out. It may make getting 
> the engine in or out of gear a bit harder, there is a trade off. There is 
> also an after market collar with notches closer together to avoid the too 
> much too little issue.
> There are times when you need to know that you have maximum thrust - like 
> when you are about to ram another boat or dock. To my mind this is a serious 
> safety issue. A young, strong crewman fended my stern off when this happened 
> to me while backing out of my slip in high wind. I parked the boat 
> immediately and called a yard with A4 experience.
> If you cannot find the adjustment instructions on the Moyer site, contact me 
> off list and I will send you a PDF.
> Ken
> 33-1 '75 A4
> 
> 
> 
> Created on a small keyboard with fat fingers...
> 
> 
> On Sep 3, 2016, at 11:17 AM, Josh Muckley via CnC-List  > wrote:
> 
>> You may find that the engine is moving independent of the shift cable.  With 
>> older/softer engine mounts the thrust may be moving the engine 
>> closer/further from the cable.  Most cables are attached to the engine so 
>> this doesn't happen but if the cable of mount is broken or failing it may be 
>> causing the problem.  Get a partner to create the problem while you are 
>> watching the engine.
>> 
>> It could also be as simple as adjusting the cable.
>> 
>> Josh Muckley
>> S/V Sea Hawk
>> 1989 C 37+
>> Solomons, MD
>> 
>> 
>> On Sep 3, 2016 10:23 AM, "Randy Stafford via CnC-List" 
>> mailto:cnc-list@cnc-list.com>> wrote:
>> Listers-
>> 
>> My Atomic-4 slips out of gear in forward if I open the throttle too much, 
>> especially under heavy load. It's not really a problem, because I don't need 
>> that much throttle. But I'm just wondering if this a common and fixable 
>> issue, or a safety feature, or what.
>> 
>> Cheers,
>> Randy
>> 
>> Sent from my iPhone
>> 
>> ___
>> 
>> This list is supported by the generous donations of our members. If you like 
>> what we do, please help us pay for our costs by donating. All Contributions 
>> are greatly appreciated!
>> ___
>> 
>> This list is supported by the generous donations of our members. If you like 
>> what we do, please help us pay for our costs by donating. All Contributions 
>> are greatly appreciated!
> ___
> 
> This list is supported by the generous donations of our members. If you like 
> what we do, please help us pay for our costs by donating. All Contributions 
> are greatly appreciated!

Thanks to all of the subscribers that contributed to the list to help with the 
costs involved.  If you want to show your support to the list - use PayPal to 
send contribution --   https://www.paypal.me/stumurray  Thanks - Stu