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Message-ID: <1b4b137c0901251739n37c29937rc61ed192ecc48ae9@mail.gmail.com>
Subject: Re: [FlyRotary] Looking for a rear counterweight
From: Tracy Crook <tracy@rotaryaviation.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Never looked the part numbers up myself but from a physics perspective I'm
surprised that the front counterweight would be the same.  The rotors form a
'rocking couple'  so I would have guessed that a change on one end would
have required a similar change on the other.

Tracy



On Sun, Jan 25, 2009 at 7:32 PM, Bill Eslick <wgeslick@gmail.com> wrote:

> Gang,
>
> Does anyone have a rear counterweight off a '91-'92 13B NA automatic?  I am
> rebuilding my '86-'88 13B with the lighter 9.7-1 rotors from a 1991 13B NA,
> but it had a manual tranny.  The part numbers are the same for the front
> weight, but not the rear one, so I need to find a rear weight.
>
> Any other problems I might run into?
>
> Bill Eslick
>

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Never looked the part numbers up myself but from a physics perspective I&#3=
9;m surprised that the front counterweight would be the same.&nbsp; The rot=
ors form a &#39;rocking couple&#39;&nbsp; so I would have guessed that a ch=
ange on one end would have required a similar change on the other.<br>
<br>Tracy <br><br><br><br><div class=3D"gmail_quote">On Sun, Jan 25, 2009 a=
t 7:32 PM, Bill Eslick <span dir=3D"ltr">&lt;<a href=3D"mailto:wgeslick@gma=
il.com">wgeslick@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gm=
ail_quote" style=3D"border-left: 1px solid rgb(204, 204, 204); margin: 0pt =
0pt 0pt 0.8ex; padding-left: 1ex;">
Gang,<br><br>Does anyone have a rear counterweight off a &#39;91-&#39;92 13=
B NA automatic?&nbsp; I am rebuilding my &#39;86-&#39;88 13B with the light=
er 9.7-1 rotors from a 1991 13B NA, but it had a manual tranny.&nbsp; The p=
art numbers are the same for the front weight, but not the rear one, so I n=
eed to find a rear weight.<br>

<br>Any other problems I might run into?<br><font color=3D"#888888"><br>Bil=
l Eslick<br>
</font></blockquote></div><br>

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