From: "Sboese sboese@uwyo.edu" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Balance prop
Date: Wed, 27 Jan 2021 22:39:41 -0700
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Matt,

One cannot balance the prop by placing the balance weights on the flywheel d=
ue to the gear ratio of the psru.  I chose to dynamically balance at the fly=
wheel with the prop removed, then install the prop, and finally dynamically b=
alance at the prop.  That appears to have given good results for me.

Steve Boese


> On Jan 27, 2021, at 6:09 PM, Matt Boiteau mattboiteau@gmail.com <flyrotary=
@lancaironline.net> wrote:
>=20
> =EF=BB=BF
> =E2=97=86 This message was sent from a non-UWYO address. Please exercise c=
aution when clicking links or opening attachments from external sources.
>=20
>=20
> How does everyone balance their prop, do they gain access to the flywheel a=
nd add bolts/washers there like a standard aircraft engine? I'm looking to b=
alance the prop around X60 (Williston, FL), and I forget who, but someone sa=
id we could rent one nearby?
>=20
>=20
> Had a 301 ss slip joint bellow for the exhaust and it cracked, which set m=
e back a few months. The end of my exhaust must have too much vibration, I w=
ill figure out more rubber mounts with the welder to stop the end vibrating.=
 Bought a 2.75" inconel split joint bellow from SPD exhaust that should hand=
le the heat.
> http://www.spdexhaust.com/pdfs/AccPDFs/Bellows.pdf
>=20
>=20
> - Matt Boiteau

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<html><head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"></=
head><body dir=3D"auto">Matt,<div><br></div><div>One cannot balance the pro=
p by placing the balance weights on the flywheel due to the gear ratio of t=
he psru. &nbsp;I chose to dynamically balance at the flywheel with the prop=
 removed, then install the prop, and finally dynamically balance at the pro=
p. &nbsp;That appears to have given good results for me.</div><div><br></di=
v><div>Steve Boese<br><br><div dir=3D"ltr"><br></div><div dir=3D"ltr"><br><=
blockquote type=3D"cite">On Jan 27, 2021, at 6:09 PM, Matt Boiteau mattboit=
eau@gmail.com &lt;flyrotary@lancaironline.net&gt; wrote:<br><br></blockquot=
e></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF


<div style=3D"border:solid red 2.25pt;padding:1.0pt 4.0pt 1.0pt 4.0pt">
<p class=3D"MsoNormal" style=3D"line-height:11.35pt">=E2=97=86 This message=
 was sent from a non-UWYO address. Please exercise caution when clicking li=
nks or opening attachments from external sources.</p>
</div>
<br>
<div>
<div dir=3D"ltr">How does everyone balance their prop, do they gain access =
to the flywheel and add bolts/washers there like a standard aircraft engine=
? I'm looking to balance the prop around X60 (Williston, FL), and I forget =
who, but someone&nbsp;said we could rent
 one nearby?<br>
<br>
<br>
Had a 301 ss slip joint bellow for the exhaust and it cracked, which set me=
 back a few months. The end of my exhaust must have too much vibration, I&n=
bsp;will figure out more rubber mounts with the welder to stop the end vibr=
ating. Bought a 2.75&quot; inconel split joint
 bellow from SPD exhaust that should handle the heat.<br>
<a href=3D"http://www.spdexhaust.com/pdfs/AccPDFs/Bellows.pdf">http://www.s=
pdexhaust.com/pdfs/AccPDFs/Bellows.pdf</a><br>
<br>
<br clear=3D"all">
<div>
<div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D"gmail_signatur=
e">
<div dir=3D"ltr">
<div>
<div dir=3D"ltr">- Matt Boiteau</div>
</div>
</div>
</div>
</div>
</div>
</div>


</div></blockquote></div></body></html>=

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