There are many types, sizes, and load ratings of shaft connectors. Lovejoys are just one of them. See Grainger catalog for some. Dan
--- In electricboats@
>
> We have used the Lovejoy coupling for many applications. They are available at most marine and hydraulic suppliers.
>
> http://www.lovejoy-
>
> There are many variations on this design based on the power transfer requirements of a particular application. I think you will find the coupling you have chosen is designed for around one horsepower and very minimal instantaneous torque. With the end load being a fluid, (prop to water) you will only be concerned with the inertia of the propeller. I would not bother with the broaching and using a key. Just a few tacks with a welder will carry a far greater load than the flexible cross, no matter what material you choose.
> Another simple, very inexpensive alternative is two sprockets and a wrap of double row chain. Weld a plate sprocket to the outboard shaft and us a hub sprocket on the motor. You can use SS chain if you want it to last 100 years instead of 20.
> Please let us know how many hours the composite cross lasts in this application?
> Thanks;
> Reid
>
> --- In electricboats@
> >
> > Mark,
> >
> > Coupler.
> >
> > Most bearing supply stores or industrial supply stores sell them. You buy
> > the parts individually each hub for the shaft you are trying to mate to.
> > The star comes in a variety of materials depending on conditions they will
> > have to live in.
> >
>
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