possible engine question----

[AZBearhawk272]

Good info. I will remove Trailblazer from my
lexicon of descriptive terms. One can back into the
“ approved” polar of inertia values by looking at propellers approved for the IO-470 series, ranging from
fixed pitch 2 blade to constant speed 3 blade.
My experimental propeller 3 blade composite fits nicely
within the envelope. The 2 blade composite is at the low end of the spectrum.
I looked at the two blade and could not get the inertia up enough by taping $$ on to the blade, so I just went with 3 blades, seemed simple and reliable.

Kevin D
#272
KCHD

[kestrel]

I looked at the two blade and could not get the inertia up enough by taping $$ on to the blade, so I just went with 3 blades, ...

That right there, is funny!

[Richard_S]

Greetings,
I'm in the beginning stages of a Bearhawk 4 kit. I have an O-470-S first run motor off a Cessna 180 that Id like to use. I would like to talk to anyone that can shed more light on the logistics of the O-470/IO-470 vs IO-540. Don't know what I don't know.
Thanks in Advance
Richard S.

[TimTall]

I've done it. IO-470 on a A model. I haven't built one with an O-540 so I can't directly compare the differences but there is a lot of knowledge here on that engine. I'm happy with how it went and how its running now with about 150 hours on it. Message me directly if you want?