I have been gifted an example and I would like to put it into my
boat.  It was part of a gen set and is fully marinised. I seek
information on converting it to main propulsion. I understand as a gen
set the pump (or settings) will cause it to run at a constant RPM. It
has a disproportionatly large flywheel (I assume to assist in keeping
constant speed).

From what I understand the HRW series of motors are essentially the
same so it figures I should be able to change parts to make it a
propulsion motor. I will need to find a bell housing or adaptor plate
to bolt on a PRM gearbox.

Can anyone please give me advice or point me in the direction of more
information and spares, all input will be gratefully absorbed.

On Wed, 11 Jun 2008 00:36:56 -0700 (PDT), NM 
wrote:

>I have been gifted an example and I would like to put it into my
>boat.  It was part of a gen set and is fully marinised. I seek
>information on converting it to main propulsion. I understand as a gen
>set the pump (or settings) will cause it to run at a constant RPM. It
>has a disproportionatly large flywheel (I assume to assist in keeping
>constant speed).
>
>From what I understand the HRW series of motors are essentially the
>same so it figures I should be able to change parts to make it a
>propulsion motor. I will need to find a bell housing or adaptor plate
>to bolt on a PRM gearbox.
>
>Can anyone please give me advice or point me in the direction of more
>information and spares, all input will be gratefully absorbed.

The gearbox is usually fitted to a cast iron timing case. The
stationary engines often have a tin casing, so you would need to
either find a cast casing or find some way to fit the box to the
flywheel end. People who have done this tend to support the gearbox
independently rather than using a flywheel housing.
You might find that your 'disproportionately large' flywheel is
actually standard.

Get yourself a manual/parts list, that will show the bits needed to
convert the governor to variable speed. Quite simple, but not terribly
cheap for what they are.

http://www.marineengine.co.uk/ are useful people.

Tim

On 11 Jun, 09:00, Tim Leech  wrote:
> On Wed, 11 Jun 2008 00:36:56 -0700 (PDT), NM 
> wrote:
>
> >I have been gifted an example and I would like to put it into my
> >boat.  It was part of a gen set and is fully marinised. I seek
> >information on converting it to main propulsion. I understand as a gen
> >set the pump (or settings) will cause it to run at a constant RPM. It
> >has a disproportionatly large flywheel (I assume to assist in keeping
> >constant speed).
>
> >From what I understand the HRW series of motors are essentially the
> >same so it figures I should be able to change parts to make it a
> >propulsion motor. I will need to find a bell housing or adaptor plate
> >to bolt on a PRM gearbox.
>
> >Can anyone please give me advice or point me in the direction of more
> >information and spares, all input will be gratefully absorbed.
>
> The gearbox is usually fitted to a cast iron timing case. The
> stationary engines often have a tin casing, so you would need to
> either find a cast casing or find some way to fit the box to the
> flywheel end. People who have done this tend to support the gearbox
> independently rather than using a flywheel housing.
> You might find that your 'disproportionately large' flywheel is
> actually standard.
>
> Get yourself a manual/parts list, that will show the bits needed to
> convert the governor to variable speed. Quite simple, but not terribly
> cheap for what they are.
>
> http://www.marineengine.co.uk/are useful people.
>
> Tim

thanks very much for the reply, I have ordered a parts list and am
bidding on a manual on ebay. Much appreciated.