From: "William Schertz wschertz343@gmail.com" <flyrotary@lancaironline.net>
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Date: Mon, 24 May 2021 10:48:47 -0600
Message-ID: <CAOgm+a55jwc5gNAehCShsCWpNdZu6GpyBVeTwSSr3t-uUCKjnA@mail.gmail.com>
Subject: Re: [FlyRotary] Best way to get air out of Renesis coolant passages
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Finn
I had a RX7 engine with two A/C cores for radiators, but here is what I
found worked
1. Fill as best as possible, then use aircompressor to take it to operating
pressure while cold
2. Run engine up to operating temperature, using highest revs possible on
ground when warm
3. While hot, bleed air pressure from system, when cool, replenish reservoir
4. Repeat at least once, then go fly, and check after flight to replenish.

On Mon, May 24, 2021 at 10:40 AM Finn Lassen finn.lassen@verizon.net <
flyrotary@lancaironline.net> wrote:

> Is there a best way to get air out of Renesis coolant passages?
>
> Like running engine at a certain RPM?
>
> Repeated heating/cool-down periods?
>
> Trying to determine reason for higher coolant temperature drop over
> right radiator vs left radiator.
>
> I tried swapping hoses from engine to rads (one has a 90 degree bend).
> But am concerned that there may be air trapped in the system leading to
> incorrect comparison readings.
>
> Finn
>
>
> ---
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<div dir=3D"ltr">Finn<div>I had a RX7 engine with two A/C cores for radiato=
rs, but here is what I found worked</div><div>1. Fill as best as possible, =
then use aircompressor to take it to operating pressure while cold</div><di=
v>2. Run engine up to operating temperature, using highest revs possible on=
 ground when warm</div><div>3. While hot, bleed air pressure from system, w=
hen cool, replenish reservoir</div><div>4. Repeat at least once, then go fl=
y, and check after flight to replenish.</div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, May 24, 2021 at 10:40 =
AM Finn Lassen <a href=3D"mailto:finn.lassen@verizon.net">finn.lassen@veriz=
on.net</a> &lt;<a href=3D"mailto:flyrotary@lancaironline.net">flyrotary@lan=
caironline.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padd=
ing-left:1ex">Is there a best way to get air out of Renesis coolant passage=
s?<br>
<br>
Like running engine at a certain RPM?<br>
<br>
Repeated heating/cool-down periods?<br>
<br>
Trying to determine reason for higher coolant temperature drop over <br>
right radiator vs left radiator.<br>
<br>
I tried swapping hoses from engine to rads (one has a 90 degree bend). <br>
But am concerned that there may be air trapped in the system leading to <br=
>
incorrect comparison readings.<br>
<br>
Finn<br>
<br>
<br>
---<br>
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Archive and UnSub:=C2=A0 =C2=A0<a href=3D"http://mail.lancaironline.net:81/=
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</blockquote></div>

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