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Message-ID: <1b4b137c0901251208v501d7030x45b3dd479dd142a9@mail.gmail.com>
Subject: Re: [FlyRotary] firewall to prop flange
From: Tracy Crook <tracy@rotaryaviation.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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My RV-4 is around 39" too.   I doubt CG will be a problem since the engine /
redrive CG is probably near the same point as a Lycoming.  Think of the
drive as a long prop extension that has little effect on aircraft CG.

Tracy

On Sun, Jan 25, 2009 at 2:47 PM, kevin lane <n3773@comcast.net> wrote:

>  after mounting my psru to my renesis engine and onto my klepis mount I
> measure 39" from flange to firewall.  my existing -6A w/ O-320 measures
> approx. 33".  in the back of my mind I remembered 4-5" difference, not 6".
> I assumed that all the geometry had been calculated when I ordered the
> engine mount.  I currently have 5" between the water pump pulley and the
> firewall, which is wonderful, but, I don't want my battery(s) in the tail
> either.  am I going to get into weight/balance issues?  what dims do other
> RV's have?     kevin
>

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My RV-4 is around 39&quot; too.&nbsp;&nbsp; I doubt CG will be a problem si=
nce the engine / redrive CG is probably near the same point as a Lycoming.&=
nbsp; Think of the drive as a long prop extension that has little effect on=
 aircraft CG.<br>
<br>Tracy<br><br><div class=3D"gmail_quote">On Sun, Jan 25, 2009 at 2:47 PM=
, kevin lane <span dir=3D"ltr">&lt;<a href=3D"mailto:n3773@comcast.net">n37=
73@comcast.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" s=
tyle=3D"border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8e=
x; padding-left: 1ex;">






<div bgcolor=3D"#ffffff">
<div><font face=3D"Comic Sans MS">after mounting my psru to my renesis engi=
ne and=20
onto my klepis mount I measure 39&quot; from flange to firewall.&nbsp; my e=
xisting=20
-6A w/ O-320 measures approx. 33&quot;.&nbsp; in the back of my mind I reme=
mbered=20
4-5&quot; difference, not 6&quot;.&nbsp;&nbsp; I assumed that all&nbsp;the=
=20
geometry&nbsp;had been calculated when I ordered the engine mount.&nbsp; I=
=20
currently have 5&quot; between the water pump pulley and the firewall, whic=
h is=20
wonderful, but, I don&#39;t want my battery(s) in the tail either.&nbsp; am=
 I going=20
to get into weight/balance issues?&nbsp; what dims do other RV&#39;s=20
have?&nbsp;&nbsp;&nbsp;&nbsp; kevin</font></div></div>
</blockquote></div><br>

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