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Message-ID: <1c23473f05072009283e290656@mail.gmail.com>
Date: Wed, 20 Jul 2005 09:28:40 -0700
From: David Leonard <wdleonard@gmail.com>
Reply-To: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Evans Coolant
In-Reply-To: <list-220307@logan.com>
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  is: since the drive is going back to Tracy soon, should I switch to the=
=20
> RD-1C or stick with the B-model?=20
>  As Buly mentioned, the rotation is different, but you did want a new pro=
p=20
> anyway right? The biggest problem is the thrust offset. If your current=
=20
> mount offsets the prop to the left, then switching to a -C drive will be=
=20
> somewhat of a problem. On the RV-3, it was a hand (and foot) full on take=
off=20
> when I changed to the -C drive. Now that I shimmed the mount back to zero=
=20
> offset, it's a pussycat. Of course you realize what's involved in changin=
g=20
> the mount angle...=20
>  Since you're determined to make the turbo work, you can get about as muc=
h=20
> power as you want that way, so I'm not sure I'd bother with the new drive=
.=20
> I'm still hoping that I can get a significant improvement in power with t=
he=20
> new intake, so I won't have to pursue the turbo again.=20
>  Cheers,
> Rusty (starting to enjoy the continuous sound of chainsaws)=20
>=20

I didn't realize that shimming your mount made such a difference. I am not=
=20
interested in doing that because it would require re-mounting of the cowl. =
I=20
do plan on a 3-blade prop to improve smoothness, but cato has a 4-month wai=
t=20
period. And you are right about power output, cooling is still likely to be=
=20
my limitation in the foreseeable future and not the ability to make the=20
power. B-drive it is.
 Waiting for traffic to go down to drive to the old hangar to get the tools=
=20
to remove the gear drive.

--=20
Dave Leonard
Turbo Rotary RV-6 N4VY
http://members.aol.com/_ht_a/rotaryroster/index.html
http://members.aol.com/vp4skydoc/index.html

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<br><br>
<div>
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div><span class=3D"q">
<div>&nbsp;is: since the drive is going back to Tracy soon, should I switch=
 to the RD-1C or stick with the B-model?<span><font face=3D"Arial" color=3D=
"#ff0000">&nbsp;</font></span></div>
<div><span></span>&nbsp;</div></span>
<div><span><font face=3D"Arial" color=3D"#ff0000">As Buly mentioned, the ro=
tation is different, but you did want a new prop anyway right?&nbsp;&nbsp; =
The&nbsp;biggest problem is the thrust offset.&nbsp; If your current mount =
offsets the prop to the left, then switching to a -C drive&nbsp;will&nbsp;b=
e somewhat&nbsp;of a problem.&nbsp; On the RV-3, it was a hand (and foot) f=
ull on takeoff when I changed to the -C drive.&nbsp; Now that I shimmed the=
 mount&nbsp;back to&nbsp;zero offset, it's a pussycat.&nbsp; Of course you =
realize what's involved in changing the mount angle...&nbsp;&nbsp;
</font></span></div>
<div><span></span>&nbsp;</div>
<div><span><font face=3D"Arial" color=3D"#ff0000">Since you're determined t=
o make the turbo work, you can get about as much power as you want that way=
, so I'm not sure I'd bother with the new drive.&nbsp; I'm still&nbsp;hopin=
g that I can get a significant improvement in power with the new intake, so=
 I won't have to pursue the turbo again.&nbsp;&nbsp;
</font></span></div>
<div><span></span>&nbsp;</div>
<div><span><font face=3D"Arial" color=3D"#ff0000">Cheers,</font></span></di=
v>
<div><span><font face=3D"Arial" color=3D"#ff0000">Rusty (starting to enjoy =
the continuous sound of chainsaws)</font>&nbsp;</span></div></div></blockqu=
ote></div>
<div><br>I didn't realize that shimming your mount made such a difference.&=
nbsp; I am not interested in doing that because it would require re-mountin=
g of the cowl.&nbsp; I do plan on a 3-blade prop to improve smoothness, but=
 cato has a 4-month wait period.&nbsp; And you are right about power output=
, cooling is still likely to be my limitation in the foreseeable future&nbs=
p;and not the ability to make the power.&nbsp; B-drive it is.
</div>
<div>&nbsp;</div>
<div>Waiting for traffic to go down to drive to the old hangar to get the t=
ools to remove the gear drive.<br><br>-- <br>Dave Leonard<br>Turbo Rotary R=
V-6 N4VY<br><a href=3D"http://members.aol.com/_ht_a/rotaryroster/index.html=
">
http://members.aol.com/_ht_a/rotaryroster/index.html</a><br><a href=3D"http=
://members.aol.com/vp4skydoc/index.html">http://members.aol.com/vp4skydoc/i=
ndex.html</a> </div>

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