X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wf-out-1314.google.com ([209.85.200.171] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTP id 3330448 for flyrotary@lancaironline.net; Thu, 04 Dec 2008 09:55:57 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.200.171; envelope-from=rwstracy@gmail.com Received: by wf-out-1314.google.com with SMTP id 28so4367668wfa.25 for ; Thu, 04 Dec 2008 06:55:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:sender :to:subject:in-reply-to:mime-version:content-type:references :x-google-sender-auth; bh=JpzOtfxU1TkMyjkGmjIf+fhrVRm7GiJF6EZRbBOHMIQ=; b=C28/w9ffHNWds5AOHPN0LcMnL+SKgA3cmYpoloKB1CVRGStnBvkZ1D/ykcuTF/JuBM OBgZP65MkV0dXKrKIdOPAInX6GsQUD+KzoEhwl2cMmwFQ1MW1Y6lJo7TQMoN62rzPckh YVyP5PFmOaQXfbsvD8tlMWyfpYt5N3O/Dxioo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:in-reply-to:mime-version :content-type:references:x-google-sender-auth; b=vbU136NzJt7ARfgJB3bj0O/mhvquBXlP3vaVvlKCmQhN1ZBYGBUCah83NelawsGaGi gA56UvEvRzt7o6Y/9NkDI8xykE6yqwCk7FKrIhzzMMJt98WLqaHg3fNkQGpDHsK/a+eu f/jDBvFdOC3BKlj16Ay6Y8LVJ978AJ3Rja6wA= Received: by 10.114.199.3 with SMTP id w3mr9037506waf.181.1228402522370; Thu, 04 Dec 2008 06:55:22 -0800 (PST) Received: by 10.114.131.4 with HTTP; Thu, 4 Dec 2008 06:55:22 -0800 (PST) Message-ID: <1b4b137c0812040655p1e0e69abyb8ceeb855e42bbb8@mail.gmail.com> Date: Thu, 4 Dec 2008 09:55:22 -0500 From: "Tracy Crook" Sender: rwstracy@gmail.com To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: New Engine Break In with Gearbox -- for Tracy In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_6679_19531058.1228402522363" References: X-Google-Sender-Auth: 34e4a33fce47e590 ------=_Part_6679_19531058.1228402522363 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline I see no cause for alarm on temps. The oil pressure is questionable. If the cause is restriction of filter or cooler I would be concerned. I measure oil pressure at the engine and get 87 PSI when in regulation. Onl= y question is what pressure regulator Bruce installed in my hand-built Renesis. I think it is stock 4 port RX-8. My old 2nd gen engine did have pressure measured at remote oil filter and I did not see any sign of higher oil pressure due to restriction. It was always 70 PSI when in regulation which is what the regulator was speced at. Tracy On Wed, Dec 3, 2008 at 9:20 PM, Bobby J. Hughes wrote: > Tracy, > > With the Advanced EFIS / engine monitor all of the instruments are factor= y > calibrated and so far have been correct. Oil pressure is being read direc= tly > out of the engine before the oil filter and oil / water exchanger. I made= a > quick run to the airport this afternoon and made another 15 minute ground > with the inlet ducts blocked. I was able to get the water up to 200F and > climbing and oil to 165F. OAT was 75F Oil pressure varied from 65 at idle= to > 105 psi at 6000 rpm. On earlier ground runs to 7500 rpm I was only able t= o > get the oil to 144F and water to 177F. OAT was 65F or less. and oil > pressure in the 110-120 range. Warming the oil up did seem to make a > difference. > > Ed, > > "Bobby, depending of where your oil pressure sensor is located (before or > after the oil cooler =96 assuming a stock Rx-7 oil cooler with internal > thermostat). IF you have removed the thermostat in the oil cooler and h= ave > not blocked that thermostat opening, then a lot of the oil will not flow > through the several passages through the cooler core. This could mean yo= u > are not getting the normal pressure drop across the oil cooler which if y= our > sensor is down stream would mean higher pressure at the sensor =96 but > probably not more than 5 =96 10 psi." > > No thermostat in the oil or water circuits. If the sensor placement is > making a 10 psi difference then the problem may not exist. My remote oil > filter adapter has two inlets and two outlets. I am using the second inle= t > for oil pressure and the second outlet will be used to monitor the before > oil cooler temp with the EM3. No room at the engine oil pad adapter block > for the pressure sender so this location was easy. It's visible in one of > the photos. > > Bobby > > > ------------------------------ > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Tracy Crook > *Sent:* Wednesday, December 03, 2008 11:31 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: New Engine Break In with Gearbox -- for Tracy > > Odd problems. Peak Oil pressure should not be significantly affected by > temperature or oil weight. What is it? Lower viscosity oil is not a > solution. Are you sure the instruments are right / calibrated? > > Tracy > > On Wed, Dec 3, 2008 at 11:04 AM, Bobby J. Hughes wrote= : > >> I am having a problem getting my oil temps up and oil pressure down >> without an oil thermostat. Will try blocking some of the air flow this >> weekend. Is 10W-40 or 10W-30 to light for the gearbox during the winter >> months? I plan to run the engine for at least 20 hours on the ground an= d >> switch back to Mobil 1 for first flight. >> >> Bobby >> >> ------------------------------ >> *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *= On >> Behalf Of *Tracy Crook >> *Sent:* Wednesday, December 03, 2008 9:12 AM >> *To:* Rotary motors in aircraft >> *Subject:* [FlyRotary] Re: New Engine Break In with Gearbox -- for Tracy >> >> Next best in mineral oil is Shell Rotella. 15W - 50 or similar. >> >> Tracy >> >> On Wed, Dec 3, 2008 at 9:18 AM, Bobby J. Hughes wrote= : >> >>> Tracy, >>> >>> What oil do you recommend for breaking in a new engine that is also * >>> acceptable *for the gearbox? Bruce T said to replace the Mobile 1 for >>> 10-15 hours so the apex seals will seat. >>> >>> Thanks, >>> *Bobby J Hughes* >>> ** >>> >>> >> >> > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > ------=_Part_6679_19531058.1228402522363 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline I see no cause for alarm on temps.  The oil pressure is questionable.&= nbsp; If the cause is restriction of filter or cooler I would be concerned.=   I measure oil pressure at the engine and get  87 PSI when in re= gulation.  Only question is what pressure regulator Bruce installed in= my hand-built Renesis.  I think it is stock 4 port RX-8.  My old= 2nd gen engine did have pressure measured at remote oil filter and I did n= ot see any sign of higher oil pressure due to restriction.  It was alw= ays 70 PSI when in regulation which is what the regulator was speced at.
Tracy


On Wed, Dec 3, 2008 at 9:20= PM, Bobby J. Hughes <bhughes@qnsi.net> wrote:
Tracy,
 
With the Advanced EFIS / engine monitor all of the=20 instruments are factory calibrated and so far have been correct. Oil= =20 pressure is being read directly out of the engine before the oil filter and= oil=20 / water exchanger. I made a quick run to the airport this afternoon and mad= e=20 another 15 minute ground with the inlet ducts blocked. I was able to get th= e=20 water up to 200F and climbing and oil to 165F. OAT was 75F Oil pressure var= ied=20 from 65 at idle to 105 psi at 6000 rpm. On earlier ground runs to 7500 rpm = I was=20 only able to get the oil to 144F and water to 177F. OAT was 65F or less. an= d oil=20 pressure in the 110-120 range. Warming the oil up did seem to make a= =20 difference.
 
Ed,
 
"Bobby, depending of where your oil= pressure sensor is=20 located (before or after the oil cooler =96 assuming a stock Rx-7 oil coole= r with=20 internal thermostat).   IF you have removed the thermostat in the= oil=20 cooler and have not blocked that thermostat opening, then a lot of the oil = will=20 not flow through the several passages through the cooler core.  This c= ould=20 mean you are not getting the normal pressure drop across the oil cooler whi= ch if=20 your sensor is down stream would mean higher pressure at the sensor =96 but= =20 probably not more than 5 =96 10 psi."  
 
No=20 thermostat in the oil or water circuits. If the sensor placement is making = a 10=20 psi difference then the problem may not exist. My remote oil filter adapter= has=20 two inlets and two outlets. I am using the second inlet for oil pressure an= d the=20 second outlet will be used to monitor the before oil cooler temp with the E= M3.=20 No room at the engine oil pad adapter block for the pressure sender so this= =20 location was easy. It's visible in one of the photos.=20
 
Bobby
 
<= /font>
From: Rotary = motors in aircraft=20 [mailto:fl= yrotary@lancaironline.net] On Behalf Of Tracy=20 Crook
Sent: Wednesday, December 03, 2008 11:31 AM

To: Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: New Engine Break In w= ith=20 Gearbox -- for Tracy

Odd problems.  Peak Oil pressure should not be significantl= y=20 affected by temperature or oil weight.    What is it?  Lower= =20 viscosity oil is not a solution.  Are you sure the instruments are rig= ht /=20 calibrated?

Tracy


On Wed, Dec 3, 2008 at 11:04 AM, Bobby J. Hughes= <bhughes@qnsi.net>=20 wrote:
I am=20 having a problem getting my oil temps up and oil pressure down without an= oil=20 thermostat. Will try blocking some of the air flow this=20 weekend. Is 10W-40 or 10W-30 to light for the gearbox during th= e=20 winter months?  I plan to run the engine for at least 20 hours on th= e=20 ground and switch back to Mobil 1 for first flight.
 
Bobby

From: Rotary motors in aircraft [= mailto:fly= rotary@lancaironline.net] On Behalf Of Tracy=20 Crook
Sent: Wednesday, December 03, 2008 9:12 AM
To:= =20 Rotary motors in aircraft
Subject: [FlyRotary] Re: New Engine B= reak=20 In with Gearbox -- for Tracy

Next best in mineral oil is Shell Rotella.  15W - 50 or= =20 similar.

Tracy

On Wed, Dec 3, 2008 at 9:18 AM, Bobby J. Hughe= s <bhughes@qnsi.net> wrote:
Tracy,
 
What oil do you recommend fo= r breaking in=20 a new engine that is also acceptable for the gearbox? Bruce= T=20 said to replace the Mobile 1 for 10-15 hours so the apex seals will sea= t.=20
 
Thanks,
Bobb= y J=20 Hughes
<= b> 
 



--
Homepage:  htt= p://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/li= sts/flyrotary/List.html


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