X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) From: "David Leonard wdleonard@gmail.com" Received: from mail-oi1-f180.google.com ([209.85.167.180] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1240667 for flyrotary@lancaironline.net; Sat, 20 Feb 2021 22:51:20 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.167.180; envelope-from=wdleonard@gmail.com Received: by mail-oi1-f180.google.com with SMTP id h17so10564833oih.5 for ; Sat, 20 Feb 2021 19:51:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=ps4g3kACXA8B1Gf1jITEACzYSC9rrvFQBEOjAJ2LCXQ=; b=iFy1mKdmBFGZDmly65w80G56qEYbk+UhNctxpGEwwyCoO5a+dKu/a1NY5/6wyn8Hw4 2vpxR14FckhK67XOxT2BAkceQvN60O3Qx6WOVgnrnzmSZSwHMegdubcPqgZM6hwevaou t0trLIYMA8ObBskgf3K49SsRAHP27guxVSyGna30Zt03YiTdz8xU94Q4y6oJ9seB3p2h 1oPLKmsTFtAbJdRasRJjEb3/AlXWpmwfFET66a3g1ZVtGpMioUHHUBjbJ8EoEvDAvjTt vS7KBG06UbB2eRN1W1+QRvHsieTPjg/Qg4p/cnuh25ly3n0cet8mL0Qabw2dQVU1pLxO b6lA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=ps4g3kACXA8B1Gf1jITEACzYSC9rrvFQBEOjAJ2LCXQ=; b=tlL885uXJNKYXzPjctwLx647PqOuFTO2lgAMt/VNxNmDVqqjj5SylvqaCQeFqus8lT f6YYGvMl2ACJVq9CnvEhMifjnyq5UIDqCXb341GzCYfrpOe0PApd28wge5BvqGo3ZQVY 1QFAc2bTNxLbxZA9c03ViljLKmMNxW6xI/t+slBT0AkP8wsfCDCRzLosuNPUwD0f2cGM rwKQpuigSif4u5mFLDBu4xgq8oGn1kYyzOp13tzWTH31sM4HTM/LAPiaInUSb9zBvu+G Cm3TL0hIinDtpLgwIvicPGTw63p7xwjlBGiAFDh3rsTVEi2ozopSP6txtgK1n9625Yly E9Aw== X-Gm-Message-State: AOAM533Jx9xwThsSj34ZFVVQmpbtCHTQEzQgAq6qxnFiOkAa011hX3Ul SwNU8ewUxqLOs+kfHImxYAf3z6s/9A5iT4XFcZKh7jigluI= X-Google-Smtp-Source: ABdhPJz0nKe2JJWXcfXn3xPH2I5YyX3ZhhFdJiEvSHIzS0FvQ8xTZAYmTOdrI/YMoAohxm96O/KDrrm++Wdr5ZxQM70= X-Received: by 2002:a05:6808:f8c:: with SMTP id o12mr11568775oiw.42.1613879464594; Sat, 20 Feb 2021 19:51:04 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: Date: Sat, 20 Feb 2021 19:50:50 -0800 Message-ID: Subject: Re: [FlyRotary] N214FL RV-4 First Flight To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="00000000000032920105bbd09826" --00000000000032920105bbd09826 Content-Type: text/plain; charset="UTF-8" Congratulations Finn! You must be walking on clouds. I agree that more cooling will make flying more enjoyable for you. Getting cooling capacity at exactly the optimal level is very tricky. So I say error well on the side of excess cooling. Makes life easier, makes flying more relaxing, and the loss in performance is practically trivial. Dave Leonard On Sat, Feb 20, 2021, 11:25 AM Finn Lassen finn.lassen@verizon.net < flyrotary@lancaironline.net> wrote: > N214FL left the ground this morning for an 18 minute flight. > > Main concern was engine (water) cooling. As you know, cooling is a > compromise between drag from unnecessary air through cowling and adequate > cooling during normal flight conditions. Climbed to 1,500' before pulling > back on throttle to see if coolant temp would stop rising. It did. Still, I > think I erred in too small fluid inlet openings in the A/C evaporator cores > I used for radiators. Some more work in that area is in my future before > hot days arrive. > > Cut the flight short due to a bit of smoke (didn't smell anything) briefly > observed low in the cockpit at full throttle later in the flight. To be > investigated. > > Van's RV-4 with Mazda 13-B Renesis (RX-8) stock engine. > RWS 2.87:1 Propeller Speed Reduction Unit > RWS Engine Controller and Monitor (modified) > Performance Propeller 76x88 > Empty Gross: Approx 926 lbs. > > Engine log attached. Unzip and open with Excel. > > WTALR: Water temp after left radiator > WTARR: Water temp after right radiator > Use EGT and CHT Ref to compare to OAT and adjust accordingly. > > Finn > > > ------------------------------ > [image: Avast logo] > > This email has been checked for viruses by Avast antivirus software. > www.avast.com > > <#m_2201196562313030310_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --00000000000032920105bbd09826 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Congratulations Finn!
You must be walkin= g on clouds.

I agree tha= t more cooling will make flying more enjoyable for you.=C2=A0 Getting cooli= ng capacity at exactly the optimal level is very tricky.=C2=A0 So I say err= or well on the side of excess cooling.=C2=A0 Makes life easier, makes flyin= g more relaxing, and the loss in performance is practically trivial.
<= div dir=3D"auto">
Dave Leonard

On Sat, Feb = 20, 2021, 11:25 AM Finn Lassen f= inn.lassen@verizon.net <flyrotary@lancaironline.net> wrote:
=20 =20 =20

N214FL left the ground this morning for an 18 minute flight.

Main concern was engine (water) cooling. As you know, cooling is a compromise between drag from unnecessary air through cowling and adequate cooling during normal flight conditions. Climbed to 1,500' before pulling back on throttle to see if coolant temp would stop rising. It did. Still, I think I erred in too small fluid inlet openings in the A/C evaporator cores I used for radiators. Some more work in that area is in my future before hot days arrive.

Cut the flight short due to a bit of smoke (didn't smell anything= ) briefly observed low in the cockpit at full throttle later in the flight. To be investigated.

Van's RV-4 with Mazda 13-B Renesis (RX-8) stock engine.
RWS 2.87:1 Propeller Speed Reduction Unit
RWS Engine Controller and Monitor (modified)
Performance Propeller 76x88
Empty Gross: Approx 926 lbs.

Engine log attached. Unzip and open with Excel.

WTALR: Water temp after left radiator
WTARR: Water temp after right radiator
Use EGT and CHT Ref to compare to OAT and adjust accordingly.

Finn



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