P
Paul Minnicks
Guest
" The plans for my home built
" The plans for my home built (NOT FAA CERTIFIED) Coot-A amphibian I am
> building call for the engine to be installed on top of a pylon. I want
> to move the center of gravity down and therefore make it more stable in
> flight and on the water. I am now in the process of investigating ways
> of accomplishing this. One idea I have is to install the engine in the
> haul and drive the propeller with an up side down boat out board drive.
> I know just about everything there is to know about aircraft and very
> little about water crafts. That is why I am contacting you. The engine I
> am going to use is a water cooled, 230 hp, fuel injected, Subaru car
> engine. It will have to incorporate a gear reduction drive get the
> aircraft propeller tip speed under supersonic. Boats with high rpm V/8
> car engines, must also have reduction drives incorporated in their out
> drives . But, gear lubrication when upside down and the shear weight of
> an outboard installed in an aircraft could be problems. To lighten it
> up, I would be able to cut away some of the drive case housing and still
> have enough strength to push a light aircraft. May be what I need are
> blueprints of existing out boards and drives. or a very knowledgeable
> mechanic. I just don't know at this point.
>
> Anyway, if you would help me or turn me in the right direction to get
> information on this subject I would really appreciate it.
>
> Paul Minnicks, A&P, IA, Commercial Pilot (and novice seaman) "
" The plans for my home built (NOT FAA CERTIFIED) Coot-A amphibian I am
> building call for the engine to be installed on top of a pylon. I want
> to move the center of gravity down and therefore make it more stable in
> flight and on the water. I am now in the process of investigating ways
> of accomplishing this. One idea I have is to install the engine in the
> haul and drive the propeller with an up side down boat out board drive.
> I know just about everything there is to know about aircraft and very
> little about water crafts. That is why I am contacting you. The engine I
> am going to use is a water cooled, 230 hp, fuel injected, Subaru car
> engine. It will have to incorporate a gear reduction drive get the
> aircraft propeller tip speed under supersonic. Boats with high rpm V/8
> car engines, must also have reduction drives incorporated in their out
> drives . But, gear lubrication when upside down and the shear weight of
> an outboard installed in an aircraft could be problems. To lighten it
> up, I would be able to cut away some of the drive case housing and still
> have enough strength to push a light aircraft. May be what I need are
> blueprints of existing out boards and drives. or a very knowledgeable
> mechanic. I just don't know at this point.
>
> Anyway, if you would help me or turn me in the right direction to get
> information on this subject I would really appreciate it.
>
> Paul Minnicks, A&P, IA, Commercial Pilot (and novice seaman) "