REFLECTOR:173RG - IO-540 COMBO ... OH NO!

Fri, 18 Jul 2003 16:58:01 -0600

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Please, please, please ... I need information.  I know there are a few
weirdoes like me who chose to put the IO-540 on the 173RG.  And I know
there are some special challenges ... but have any of you run into this
yet?
=20
I did some rotation tests with my brand new three-blade MT Prop.  Ouch!
I can't use it.  The prop will strike at a normal rotation.  So I did
some measuring ... and unless I'm crazy ... it looks like I need 30"
blades to be safe!  That's only a 60" prop!
=20
Can that be so?  I believe I did not exaggerate the rotation.  And my
plane in standard in every way (except for the engine).
=20
The factory told me I could expect a problem with clearance ... but they
said they had a plane there that flew away with my combo and a
four-blade prop.  Was it longer than 60"?  Was the point of rotation
changed by moving the gear? (that would be too late for me).
=20
What is the alternative?
=20
My prop show (an MT Dealer) says the factory may be able to come up with
a custom five-blade prop for my 325 horsepower configuration.  Of
course, I would only have to get a large home equity loan!
=20
HELP!!!!!!!!
=20
=20
=20

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<div class=3DSection1>

Please, please, please ... I need information.&nbsp; I know there are a few weirdoes =
like me who
chose to put the IO-540 on the 173RG.&nbsp; And
I know there are some special challenges ... but have any of you run =
into this
yet?<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

I did some rotation tests with my brand new =
three-blade MT
Prop.&nbsp; Ouch!&nbsp; I can&#8217;t use it.&nbsp; The prop will strike at a =
normal rotation.&nbsp; So I did some measuring ... and =
unless I&#8217;m
crazy ... it looks like I need 30&#8221; blades to be safe!&nbsp; That&#8217;s only a 60&#8221; =
prop!<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Can that be so?<span =
style=3D'mso-spacerun:yes'>&nbsp; </span>I
believe I did not exaggerate the rotation.<span =
style=3D'mso-spacerun:yes'>&nbsp;
</span>And my plane in standard in every way (except for the =
engine).<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

The factory told me I could expect a problem with =
clearance
... but they said they had a plane there that flew away with my combo =
and a
four-blade prop. &nbsp;Was it =
longer than 60&#8221;?&nbsp; Was the point of rotation =
changed by moving
the gear? (that would be too late for me).<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>What is the alternative?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

My prop show (an MT Dealer) says the factory may be =
able to
come up with a custom five-blade prop for my 325 horsepower =
configuration. &nbsp;Of course, I would only have to =
get a large
home equity loan!<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>HELP!!!!!!!!<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt;mso-no-proof:yes'>&nbsp;</span><o:p></o:p></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

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