This info cheerfully lifted from the "Subie Group"........Should be helpfull for Rotorheads

flying the IVO or considering this prop.........

 

Kelly Troyer

 

 

 

 

"rv6ejguy"

wrote

 

I'd insert the washers as a safety thing but would not use IVOs method
for setting pitch which is waiting for the 15A breaker to pop as the
trunion contacts the nylon washer at either end of its travel. For one
thing this strains the motor and possibly the blade. The other thing,
you can only tell full fine and full coarse- nothing in between.
Another friend of mine running an IVO had a motor fail after only a
few hours and broke a trunion also. He added the ammeter and limits
load to 13-14 amps and has had no problems since. I think he has 300
hours on his now. I have over 200 on mine and never had any problems.

It is important to follow IVOs torquing recommendation precisely. Once
you have run for a few hours and checked torque a few times, the bolts
should remain tight and you should just have to check maybe at every
oil change. Mine have remained tight since I had the blades off 130
hours ago. My combo is different from Jan's so t o be safe, check the
tapes and bolts frequently at first until experience is built up.
Differences in torsional vibration might impact experiences here
between the two engine packages.

Brush wear can be lowered initially by polishing the slip rings with
400 grit to remove the bead blasted finish. Initially check these
every 20 hours. Once carbon is laid down on the rings well, they
should last over 50 hours between changes.

Be aware that prop to cowling and spinner spacing may require
modification to fit. I used Van's spinner with different Van's
backplates but my cowling had some added to the front to take up a gap
there.

Finally, my drive had an SAE 2 flange and there was interference
between the IVO prop adapter and flange radius on the center nose of
the redrive. The bolts could not be tightened properly. Check things
like this carefully. Prop failures can spoil your whole day!

 "av8rjlw"  wrote:
>< BR>> This sounds simple enough. What about the inserting the washers to
> limit the pitch as mentioned on the Ivo site. Have you or anyone
> else done this AND does it WORK. Sounds like you have the bugs
> worked out. Would you mind guiding me through my install? It'll be a
> little while yet before I am ready.
>
>
> Jim
>
>
>  "rv6ejguy"
> wrote:
> >
> > We have the ammeter wired into the prop circuit so that it reads
> > positive whenever the prop motor is in transit. This allows you to
> > judge pitch angle of the blades. Since the IVO twists the blades,
> > current draw increases on either side of neutral pitch. So passing
> > through neutral in either direction, current drops to around 2 amps
> > then starts to build again as more load is put on the motor. We use
> > about 3 amps fine of neutral for takeoff and circuits. We< BR>> > progressively coarsen the pitch as we level out for cruise going
> to a
> > max of 12 amps coarse at altitude and higher power settings. The
> > ammeter is very useful with this prop in knowing where the blades
> are set.
> >
"av8rjlw"  wrote:
> > >
> > > Hey Ross,
> > > The ammeter you spoke of. Is this the simple gauge to show
> current and
> > > does it read full time or just when you adjust the pitch. I hate
> asking
> > > questions like this, but I havent heard of this before and there
> is  nothing on the Ivo site for pitch reading other that  the "module".
> > >
> > >
> > > Thanks,
> > > Jim