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Steve and All,
The IVO Magnum has two pitch ranges available. 30" to 90" and the so called Hi-Pitch 45" to 105" blades. You may need to talk to IVO to
find out how to tell which blades you have. FYI
Kelly Troyer
--
Dyke Delta/13B Rotary Power
Ed,
things are definitely moving forward. This is a great weekend weather wise
to get my priming done, or at least the first round of it.
I kept the engine turned over quite often. Just about every time I worked
on the plane I would turn the prop a couple times. I got turn over at least
once or twice a week. I did a little tuning yesterday, only for a couple
MAP points, but it went well, and definitely makes a difference in the
smoothness.
The prop is a blade 72" Ivoprop Magnum. It has the high pitch blades, but I
don't remember the range. I know it goes up to 90 on the pitch, but I don't
remember the bottom number. I had already bought the prop when I heard
about another incident with cracking blades. I though that problem was
behind them, but it was on a Lycoming, so I'm hoping that I won't have any
problems running on the smoother rotary. I really like the concept of the
design, and down the road I can add the in-flight adjust motor for only
$900. Right now, it is what they call a ground quick adjust. I'm not sure
how much pitch I have right now. I cranked in only a little bit, but the
blades has a pretty good pitch to them to start with. I will be keeping a
very wary eye on the prop for any signs of cracking.
I'll just adjust the prop to get the proper static RPM.
2 questions. What RPM are you using for idle ? What static RPM is best for
a starting point ? I was thinking that it was in the 4800-5000 RPM range,
but I may be wrong.
Steve Brooks
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