X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: "Charlie England ceengland7@gmail.com" Received: from mail-il1-f173.google.com ([209.85.166.173] verified) by logan.com (CommuniGate Pro SMTP 6.3.5) with ESMTPS id 1529097 for flyrotary@lancaironline.net; Thu, 13 May 2021 17:59:01 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.166.173; envelope-from=ceengland7@gmail.com Received: by mail-il1-f173.google.com with SMTP id z1so16399733ils.0 for ; Thu, 13 May 2021 14:59:02 -0700 (PDT) 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=L+GdcUPUeTjzMOzD9Ef5ibvCsWNDlpbYTScVBju7/1w=; b=tQWV15IfajyFnhy1KM83Wyao86gOp9aO2IuOEcrkyokA2iX8O1xn3ujL+DHLT8Ky/v Sg1FiVhRVjBYChYgNGtTu3Op2ux2hYjBmqLwOsesPzDWen/aiioKbWJAn5W925XGAUpz +eFg6k7RidtFsIzY9BYX3UirXk/iOAd9ECRowW2bSokCMgGsE/vx1NFkOU8b3JaGK7gA GpSQNUyAsk5SoaPOmfqihSLjVkQ3RBCIfRFMGgcWsW/CcnZ4vOyk4iJEEKS8HVbKqq8v H84buj2tEBkIIbOkmeojscc7THHa7rZlDF4gPM0Yf+uynjWUUIApBs1EL0HxJvh3Jh0R fRcw== 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=L+GdcUPUeTjzMOzD9Ef5ibvCsWNDlpbYTScVBju7/1w=; b=YOI0ts8iBbEc6uY7jymFCLOwZTB6ASP+BmemEY2pIz1xMwpGSdmYl+dpvlti0eS9jS c6GFvZpE3xdVtMh46yXrEDO+dsuTlTeSw99FUQ5XzxfFbw/SQ2f1V1DxuM364NTRqsLf GuouFp/3h3JP7UwI8zCNyr3uiwEAh6g1vlaE83kiWgOUMzZjuTfqqTsLy5YRZhw9aZ1w g8VC3Ju09KOq9Fie41tG9pUyoga0iaSiETrLbXPgZO0UU39qByZLR5Y2R4LaezRCV6Hk 2NVf1e+o07cVrFknLjAy11QzivO/dwlwhB0f7IMFnF/TE2eOvpo3VI1VgF2DmFWsvBbt u6pA== X-Gm-Message-State: AOAM530QI4ciss02FNp0/EHUlWgWhX0FPRkZb5oD9Yr5oBSr3p1zsVPN fldSSywf4g294TgcZcgzW88HE/Xpcg0rJXemmMEpkonV X-Google-Smtp-Source: ABdhPJxA2/6I/1JMpCk7LsS9c9OKNtToAbzTyZ/o+S7rSaGSrX4mFX5uWpybtPmjXqEh9bLQZstDHqulkItRZL39qN0= X-Received: by 2002:a05:6e02:8f2:: with SMTP id n18mr35801549ilt.299.1620943124645; Thu, 13 May 2021 14:58:44 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Thu, 13 May 2021 16:56:02 -0500 Message-ID: Subject: Re: [FlyRotary] Oil Cooler sizing To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="0000000000002549b505c23d3bb1" --0000000000002549b505c23d3bb1 Content-Type: text/plain; charset="UTF-8" On Thu, May 13, 2021 at 4:01 PM Matt Boiteau mattboiteau@gmail.com < flyrotary@lancaironline.net> wrote: > I'm trying to tackle the oil cooling. Currently have a CX racing 11x9x2 ( > https://www.cxracing.com/oil-cooler-kit/OC-248-30-AN10) > > On a 30C / 85F day in FL @ 2200rpm cruising > Coolant is 180 outlet / 170 inlet > Oil is 225-230 pan / 200 inlet / 215 PSRU. > > I use Valvoline VR1 20W-50 standard oil, and have synthetic sitting on the > shelf ready to go. Since we can't post much in pictures here, I put a video > on youtube of the setup. The cowl inlet is 4" and the opening to the start > of the wedge is 3". I added some turning vanes to help the wedge shape send > more air to the front, but didn't change the temps too much. > > The only thing left to do is increase the opening on the wedge. I could > probably get away with a 5" opening. If that doesn't work, then time to > source out a bigger rad. What sizes are you guys running? > > https://www.youtube.com/watch?v=ONO4bJvw5rc > > > - Matt Boiteau > I believe that's the same size cooler that Tracy is running on his 20B, and the one I've got for my Renesis (which hasn't run yet). I think the only critical temp is at the return to the engine; pan temp will always be significantly higher because it's been heated by the engine. There's a guy over on the HomebuiltAirplanes forum who says he's raced a lot of rotaries; he says he runs ~200 degree oil temps in his racers. The link to the youtube video says 'private', so I can't see it. Did you try tuft testing the output of the oil cooler core, to see if you're getting flow across the entire core? Charlie --0000000000002549b505c23d3bb1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Thu, May 13, 2021 at 4:01 PM Matt Boiteau mattboiteau@gmail.com <flyrotary@lancaironline.net> wr= ote:

I believe that's the same size = cooler that Tracy is running on his 20B, and the one I've got for my Re= nesis (which hasn't run yet). I think the only critical temp is at the = return to the engine; pan temp will always be significantly higher because = it's been heated by the engine. There's a guy over on the Homebuilt= Airplanes forum who says he's raced a lot of rotaries; he says he runs = ~200 degree oil temps in his racers.

The link to the youtube video say= s 'private', so I can't see it.=C2=A0 Did you try tuft testing = the output of the oil cooler core, to see if you're getting flow across= the entire core?

Charlie
--0000000000002549b505c23d3bb1--