-------------- Original message from Charlie England : --------------

> Kelly Troyer wrote:
>
> > Guys I am about to cut metal to fit a 16 inch spinner to my three blade
> >
> > "IVO" propeller and would like any advise on your favorite methods
> >
> > of making a pattern of the prop to avoid ruining a very expensive piece
> >
> > of aluminum. Attached is CDP (cheap digital photo) of what I am
> >
> > dealing with. All comments and advice appreciated.
> >
> >
> >
> > Thanks,
> > --
> > Kelly Troyer
> > Dyke Delta/13B/RD1C/EC2
> >
> Hi Kelly,
>
> Having flown behind a couple of IVO's, my 1st piece of advice (if your
> plane is capable of flight faster than about 160kts) is to start with
> another prop. :-)
>
> My 2nd piece of advice is: don't use a spinner, since you will need to
> check the integrity of the hub before every flight. When I tried the
> IVO, the company actively discouraged the use of spinners for that
> reason. (return to #1)
>
> As to actually fitting the spinner, I fitted the prop & both front &
> rear bulkheads to the hub & used stiff paper (old file folders), cut
> into strips, & tape to get a rough contour around the blades, then
> transferred the pattern to the spinner. There was still a lot of 'cut &
> fit' involved.
>
> Charlie
>

      Thanks Charlie. I have become well aware of the "IVO" prop problems

   and limitations thanks to my friends on the group. I am hopeing to help

   the efficiency of the "IVO" by covering most of the flat hub area with

   the 16 inch (Mustang Two) spinner. After getting airborne I may try

   cuffs next the spinner (like Tracy). As a point of interest what engine(s)

   did you attach your "IVO" to ? For the groups info Jim Maher is very

   close to flying his "Dyke Delta" (13B/Ross 2.85/EC2/IVO -3 blade). 

   Kelly Troyer