[Public-List] no power to propeller

[Meinhold, Mike J.]

The Atomic 4 gearbox has a forward detent adjustment that I just used . Last season the engine would come out of gear when too much torque was demanded. Now I have to lean on it to get it in gear, but it stays. Does the GrayMarine have a similar setup?

Mike
Rinn Duin #272

-----Original Message-----
From: Public-List [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of Glenn Brooks
Sent: Monday, June 16, 2014 12:25 PM
To: Alberg 30 Public List -- open to all
Subject: Re: [Public-List] no power to propeller

Yep, sounds like the friction plates in the tranny are worn out and slipping.  Eventually even in low power setting, you will have no thrust.

Glenn b
dolce 318

Sent from my iPad

> On Jun 16, 2014, at 3:22 AM, Bradford Cooke <bradfordcooke1 at gmail.com> wrote:
> 
> Hi Guys,
> Thank you for your replies.  The prop has been cleared at all times, 
> so I don't think that something wrapped around the prop is the 
> problem. The onset was more gradual.  I have a Gray Marine manual, and 
> there is an option for a hydraulic clutch described in it. I'll have 
> to check and see what my engine has on it.
> 
> Thanks, Don for your thoughts about the drive shaft nut and the keyway.
> 
> Hope all of you are enjoying the season so far, Brad Cooke
> 
> 
>> On Sat, Jun 14, 2014 at 11:47 AM, Jeffrey <fongemie at gmail.com> wrote:
>> 
>> Key worn out, unlikely.  My guess is some old warp or seaweed on the prop.
>> 
>> Jeff
>> 
>> Seagrass. #116
>> Boothbay Harbor, Maine
>> http://sailboatseagrass.com/
>> 
>> <http://instagram.com/jfongemie>
>> 
>> 
>> On Sat, Jun 14, 2014 at 10:21 AM, Wes Gardner 
>> <wesgardner1952 at gmail.com>
>> wrote:
>> 
>>> I agree with George, I'd do a little visual inspection first. A 
>>> quick dip with a mask and snorkel will reveal lots
>>> 
>>> Sent from my location
>>> 
>>> On Jun 14, 2014, at 9:55 AM, George Dinwiddie 
>>> <gdinwiddie at alberg30.org>
>>> wrote:
>>> 
>>>> Brad,
>>>> 
>>>>> On 6/14/14, 8:58 AM, Bradford Cooke wrote:
>>>>> I have a problem with getting power to my propeller.  At low rpm's 
>>>>> the propeller sends my boat forward.  As I increase the rpms, 
>>>>> there is no
>>> extra
>>>>> power or speed.  One diagnosis was that the key way was worn out, 
>>>>> and
>>> the
>>>>> propeller was slipping.  The yard where my boat is now thought 
>>>>> there
>>> was a
>>>>> problem with the hydraulics to the transmission.  If the fluid was
>> low,
>>>>> then there was a simple solution.  IF the fluid was not low, then 
>>>>> a
>>> major
>>>>> repair bill was probable.
>>>>> 
>>>>> Has anyone had experience with this issue?  I have an original 
>>>>> Gray
>>> Marine
>>>>> gas engine, from 1965 that still runs fine.
>>>> 
>>>> I'm pretty sure the yard doesn't know what they're talking about. 
>>>> The
>>> Gray doesn't have a hydraulic transmission. I suspect it does have a 
>>> friction transmission, like the Atomic 4 does. If that's the case, 
>>> it
>> could
>>> be worn and slipping.
>>>> 
>>>> How quickly did this problem come on? When was the last time the 
>>>> prop
>>> was cleaned?
>>>> 
>>>> - George
>>>> 
>>>> --
>>>> ----------------------------------------------------------------------
>>>> When I remember bygone days                         George Dinwiddie
>>>> I think how evening follows morn;            gdinwiddie at alberg30.org
>>>> So many I loved were not yet dead,           http://www.Alberg30.org
>>>> So many I love were not yet born.                          also see:
>>>>              'The Middle' by Ogden Nash     http://idiacomputing.com
>>>> -------------------------------------------------------------------
>>>> ---
>>>> 
>>>> 
>>>> 
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>> 
>> 
>> 
>> --
>> ______________
>> 
>> Jeffrey Fongemie
>> 
>> <http://instagram.com/jfongemie>
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