[Public-List] no power to propeller

[George Dinwiddie]

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

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