X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: "Andrew Martin andrew@martinag.com.au" Received: from pmg.Logan.com ([207.170.160.161] verified) by logan.com (CommuniGate Pro SMTP 6.4.0) with ESMTPS id 3678966 for flyrotary@lancaironline.net; Mon, 04 Nov 2024 20:57:02 -0500 Received: from pmg.Logan.com (localhost [127.0.0.1]) by pmg.Logan.com (Proxmox) with ESMTP id 629851C5E2 for ; Mon, 4 Nov 2024 20:57:02 -0500 (EST) Received-SPF: none (martinag.com.au: No applicable sender policy available) receiver=pmg.Logan.com; identity=mailfrom; envelope-from="andrew@martinag.com.au"; helo=mail-ot1-f54.google.com; client-ip=209.85.210.54 Received: from mail-ot1-f54.google.com (mail-ot1-f54.google.com [209.85.210.54]) by pmg.Logan.com (Proxmox) with ESMTPS for ; Mon, 4 Nov 2024 20:57:01 -0500 (EST) Received: by mail-ot1-f54.google.com with SMTP id 46e09a7af769-718078c7f53so2413297a34.1 for ; Mon, 04 Nov 2024 17:57:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=martinag-com-au.20230601.gappssmtp.com; s=20230601; t=1730771815; x=1731376615; darn=lancaironline.net; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=T39ixB93r4bXui0fnynxxRE9fW/KNJN8US/6j3tHJ9Y=; b=KZmVOiFSsjoYZ9AgVyuGN5q6TMGlt6F62Z72ScTruYP+SAJBpsVdcaY7d00BFTL16j hYs2pxIC9Hl1p9pn0s2v5lEUIGtgFViXNS59Csr8MhHwxVwNUDdVf3fw9ngdqZX1ZADo co8zDTOwP/K9TkqIu71V3DmPh4+ArheRimnA53aJNo/yVXAiwonqaHe5mNOqAyF9+2iy PlA728Psvr92vZjp8jpF5vbuqcnKGGn+JrVEFfnBaQHopTVK3we5CHsI8Qqyv+7ZDyDL MYn68FeMj0N6uZTidScMljl9FTqUuaOyyvdva0G2QQ7Ld2mlD4A7zHLwMJCqEY1P28vD 52lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730771815; x=1731376615; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=T39ixB93r4bXui0fnynxxRE9fW/KNJN8US/6j3tHJ9Y=; b=WNJYu38RnZEhbvkc/4n2U4uontRhkGnYUH6ZLdGVGBFhOeARkKY8gVSNSwNYMouBu3 nD5bfUChJUt0fOrIYOpXr+5nmfk9sW2pzEngqL9iednjyJyrElYvJjiWSSuSR6ukMJCu 2LS803TUH1QCK8R0wkjA6iJ5nym1+/xclI3I6M0rM6S0kjsgeeO4St0xrWwVV5xGOQPu TG4L/bLDtIllBdttxqjV9MyQKdNeaaDltKQ2blooXRIjNyHz69bEb0ryj8+YbHUl8S70 MYIG7Vyisg+fHkR+yDoGjiwS+5+9LynjkEOwFuyxhDKBsOtm1FSj62u8NI7eic4Q4mYh Wufg== X-Gm-Message-State: AOJu0YyjfTO296b8GEq6BRnfU7JqxTXOMYArq8SeaKPTXLN3/5QrbOB4 jdV2vepRYUgpY9MnZw2BNFG+l1E/2fqECDFJbAeRphJ5sbRWLFC+GLFXMHi5/3GAgHvPvOcWmaX hipnGC2sqzKF83/2U2m8S8HU18hSvic2GBuDGmrJhOS5X+Jc= X-Google-Smtp-Source: AGHT+IHmItSQW1RQSaBgrZDwOKVif0Om1xK/tf3UbvQW/SWFCbBWQXA4TthE2V6mac81ke9zCxtYSM4Ir+e/Vgz6O5c= X-Received: by 2002:a17:90b:3c4c:b0:2e2:8f4d:45a with SMTP id 98e67ed59e1d1-2e94c21cd4dmr21891167a91.13.1730767743853; Mon, 04 Nov 2024 16:49:03 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: Date: Tue, 5 Nov 2024 08:48:39 +0800 Message-ID: Subject: Re: [FlyRotary] Re: Renesis oil pressure To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="0000000000008fc88f06261fc413" X-SPAM-LEVEL: Spam detection results: 0 AWL 0.751 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DMARC_MISSING 0.1 Missing DMARC policy HTML_MESSAGE 0.001 HTML included in message RCVD_IN_MSPIKE_H3 0.001 Good reputation (+3) RCVD_IN_MSPIKE_WL 0.001 Mailspike good senders SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_NONE 0.001 SPF: sender does not publish an SPF Record --0000000000008fc88f06261fc413 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Steve, why such a heavy weight oil? Maybe try a 5w30 mineral or semi syn oil. Andrew On Tue, 5 Nov 2024, 06:56 Stephen Izett stephen.izett@gmail.com, < flyrotary@lancaironline.net> wrote: > Thanks Doug. Yes, Racingbeat does have some helpful material. > > My question is the =E2=80=98why=E2=80=99 the lowish oil pressure on RPM r= ise? > > NOTE: I did have a very high rpm and therefore high pressure event on > initial start years ago that may have damaged something in the oil system > path. > I=E2=80=99m endeavouring to discover what this might be. > > Recent and consistent data: (Renesis Series #1 4 Port with MT CS Prop - > Oil Pressure reading tested within ~2psi, Oil is Synthetic 20W60, 44 Row > Mocal Oil Cooler) > > Lined Up Before TakeOff OAT 74F 60psi @ 2100rpm OilT 142F > Wide Open Throttle +10 seconds 65psi @ 7200rpm > +2 mins (WOT and CS Prop Set) 51psi @ 6400rpm OilT peaks 207F > > So Oil Pressure only rises from 60 to 65psi after 2100->7200rpm (5100rpm > increase) > Oil temp increase & viscosity decease has Oil Pressure then settle down t= o > 51psi. > > I think I have clarified in the last day that the Renesis series 1 front > cover to front iron path uses a metal gasket =E2=80=98without' an o-ring. > This discounts the possibility of an o-ring failure causing oil to be > dumped back into sump just after the pump. > It appears I was led astray by a schematic drawing that showed the RX8 > series 1 oil system as having an o-ring seal in the front cover to iron > path. > > So, I am now investigating the likelihood of the following possible > failure points and the work required before committing and jumping into > getting dirty. > 1. Pump - Could the pump be damaged? > 2. Front relief valve - Could the Spring break or otherwise be cracking a= t > a much lower pressure? > 3. Rear relief valve - Same as for 2. Above. > 4. Thermal Pellet delete - Could I have messed this up or damaged the oil > path when I replaced the OEM pellet with Tracy=E2=80=99s part. > > My assumptions include: > 1. The Mocal 44 Row Oil Cooler will have a lower pressure drop than the > OEM cooler/s > 2. Oil Pressure should rise to Rear Relief Valve Pressure + some, maybe > 75psi @ >6000rpm in a Series #1. > > Appreciate further consideration as I try and figure this out. > > Thanks > > Steve > > > > > > > On 4 Nov 2024, at 8:31=E2=80=AFpm, DOUGLAS LOMHEIM dlomheim@aol.com < > flyrotary@lancaironline.net> wrote: > > =EF=BB=BFRacing Beat has always provided good background info, and here= =E2=80=99s a link > to their discussion / products to increase oil pressure=E2=80=A6 > > Rotary Tech Tips: Oil Cooling Tips > > racingbeat.com > > > > > > > > > > > Doug > > Sent from my iPhone > > > --0000000000008fc88f06261fc413 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Steve, why such a heavy weight oil?=C2=A0
Maybe try a 5w30 mineral or semi syn oil.
Andrew

On Tue, 5 Nov 2024, 06:56 Stephen Izett stephen.izett@gmail.com, <flyrotary@lancaironline.net> wrote:
Thanks= Doug. Yes, Racingbeat does have some helpful material.

= My question is the =E2=80=98why=E2=80=99 the lowish oil pressure on RPM ris= e?

NOTE: I did have a very high rpm and therefore = high pressure event on initial start years ago that may have damaged someth= ing in the oil system path.
I=E2=80=99m endeavouring to discover = what this might be.

Recent and consistent data: (R= enesis Series #1 4 Port with MT CS Prop - Oil Pressure reading tested withi= n ~2psi, Oil is Synthetic 20W60, 44 Row Mocal Oil Cooler)

Lined Up=C2=A0Before T= akeOff=C2=A0OAT 74F=C2=A0 60psi= @ 2100rpm OilT 142F
Wide Open Throttle +10 seconds =C2=A0 65psi @ 7200rpm
+2 mins (WOT and CS Prop Se= t) 51psi @ 6400rpm OilT peaks= 207F

So Oil Pressure only rises from 60 to 6= 5psi after 2100->7200rpm (5100rpm increase)
Oil temp increase = & viscosity decease has Oil Pressure then settle down to 51psi.

I think I have clarified in the last day that the R= enesis series 1 front cover to front iron path uses a metal gasket =E2=80= =98without' an o-ring.
This discounts the possibility of an o= -ring failure causing oil to be dumped back into sump just after the pump.<= /div>
It appears I was led astray by a schematic drawing that showed th= e RX8 series 1 oil system as having an o-ring seal in the front cover to ir= on path.

So, I am now investigating the likelihood= of the following possible failure points and the work required before comm= itting and jumping into getting dirty.=C2=A0
1. Pump - Could the = pump be damaged?
2. Front relief valve - Could the Spring break o= r otherwise be cracking at a much lower pressure?
3. Rear relief = valve - Same as for 2. Above.
4. Thermal Pellet delete - Could I = have messed this up or damaged the oil path when I replaced the OEM pellet = with Tracy=E2=80=99s part.

My assumptions inc= lude:
1. The Mocal 44 Row Oil Cooler will have a lower pressure d= rop than the OEM cooler/s
2. Oil Pressure should rise to Rear Rel= ief Valve Pressure + some, maybe 75psi =C2=A0@ >6000rpm in a Series #1.<= /div>

Appreciate further consideration as I try an= d figure this out.

Thanks

Steve=C2=A0





=
On 4 Nov 2024, at 8:31=E2=80=AFpm, DOUGL= AS LOMHEIM dlomheim@aol.com <flyrotary@lancaironline.net&= gt; wrote:

=EF=BB=BFRacing= Beat has always provided good background info, and here=E2=80=99s a link t= o their discussion / products to increase oil pressure=E2=80=A6<favicon.ico>