X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=Led+0XXi c=1 sm=1 tr=0 a=W1Js2itu4Pc7rIswZJOkmg==:117 a=x7bEGLp0ZPQA:10 a=khwyK8DuSVkA:10 a=sC3jslCIGhcA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=ayC55rCoAAAA:8 a=h6zHRbJlsOue_1p9c9MA:9 a=QEXdDO2ut3YA:10 a=3A39uaR2-Vts2r3xm0YA:9 a=RMAilP9l-pJoeDTy:21 a=_W_S_7VecoQA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=B_RyunTPg8udlmYm5Cu2:22 From: "David COOK hoursaway1@comcast.net" Received: from resqmta-ch2-05v.sys.comcast.net ([69.252.207.37] verified) by logan.com (CommuniGate Pro SMTP 6.2c5) with ESMTPS id 10359733 for flyrotary@lancaironline.net; Wed, 29 Nov 2017 22:31:22 -0500 Received-SPF: pass receiver=logan.com; client-ip=69.252.207.37; envelope-from=hoursaway1@comcast.net Received: from resomta-ch2-11v.sys.comcast.net ([69.252.207.107]) by resqmta-ch2-05v.sys.comcast.net with ESMTP id KFYLefla7zTFRKFZ4eyDbt; Thu, 30 Nov 2017 03:31:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20161114; t=1512012666; bh=GuCoZvNY3yscWnepEhL+VFrdJRInILg4HVZmfI3j7pc=; h=Received:Received:Date:From:Reply-To:To:Message-ID:Subject: MIME-Version:Content-Type; b=k4cSR0gB5BuUcHGHR9sRPC68pAe8aeVQWgm2bgi/JKonyH8oo54G+OTJ8loLiD9FK 732bUbzHn0MK4ohE3k2xGIzkLSPzSg7ooXR12K7Gks6XGAlO6z3wpJJ8usL7fUElN+ TUDPTLzEic6Et9ytozgWC8eOezhhF//XsfWgmiCxMkwqW4Ro6/cn2LXIIsxx2tTM5c hpgN9XsqmruG8z9nl2qODxidz9BBOdcXZKhWqqxwe3mVf+BevbtH9SKOBlGRz2ga0Z +oI+2TPpVMcceLbxAcQulzduDQnamRtaphSbSKw5jn6LSrsuWoV192m3VGjiRNcSg1 QYptODDkCF9oQ== Received: from oxapp-ch2h-02o.email.comcast.net ([96.118.146.173]) by resomta-ch2-11v.sys.comcast.net with SMTP id KFZ3eOqWagNOhKFZ3e5ntA; Thu, 30 Nov 2017 03:31:06 +0000 Date: Wed, 29 Nov 2017 22:31:05 -0500 (EST) Reply-To: David COOK To: Rotary motors in aircraft Message-ID: <241100973.456549.1512012665524@connect.xfinity.com> In-Reply-To: References: Subject: Re: [FlyRotary] Re: Rotary engine did not start - MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_456548_2100129722.1512012665519" X-Priority: 3 Importance: Medium X-Mailer: Open-Xchange Mailer v7.8.4-Rev12 X-Originating-IP: ::ffff:68.49.229.174 X-Originating-Client: open-xchange-appsuite X-CMAE-Envelope: MS4wfEUwEhFGgqZFnXgBifNlhqDePlVw/OX+sqre1u2b12ITGPzC5+P+FCP6UO9vqrY7mz+xqYrZkY38tOYLOHr2bAMu9h5y02YOz50J50RSkOksHztqWml9 N4pW8+rLxWmAdqRl+qKug9ll0SgPoN7AnkT38S59sy/efMIvbBzy1vjw/oYn9TAz4oZJYxRwmixo2Zsz8aBYhtnYLzy28t8VD5U= ------=_Part_456548_2100129722.1512012665519 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable I have three customers with RX8's, have had all come in on the hook, in the= past years, flooded, cranks fast, no start-no compression, when winter tem= ps are here, one will be back soon because he changed nothing, other remove= d oil injection sys. & now adds 2cyc to gas, other removed synthetic oil & = now uses old fashion REAL oil (that's what he used in his RX7 for 15 years)= has had no prob. (it burns, not as well as 2cyc but,,,,,,) he's happy. Dav= id R. Cook RV6A Rotary Lansing MI. > On November 29, 2017 at 9:22 PM "Todd Archer archerwt@gmail.com" wrote: >=20 > Sounds like you got it sorted, Dennis. I would imagine you are good = to go. >=20 > A standard shutdown practice for injected RX7s (FCs: leaky injectors = common) is to goose the engine the instant before turning off ignition. W= ith the ignition off and the engine at =3D>3k, keep your foot to the floor.= This ingests a bunch of air without the fuel. Minimizes the build-up of = raw fuel for the next start. Pretty much the same as the standard lean-cut= off shutdown in carbureted aircraft engines. >=20 > Todd Archer >=20 >=20 > On 11/29/2017 5:04 PM, Clouduster clouduster@austin.rr.com mailto:clo= uduster@austin.rr.com wrote: >=20 > > >=20 > > =20 > >=20 > > I had a no-start of my RX-8 in my RV-7A about three weeks ago. = I had rebuilt the engine starter and after re-installing it, I started the= engine 3 times to make sure the starter was performing properly. Everythi= ng was OK. I got in the airplane 2 days later and the engine turned over b= ut did not start. I ran the P 680 battery down trying to start it. I dis= covered I had NO compression on any of the 6 rotor faces! I checked the ig= nition, injectors and cleaned the plugs. I also squirted some fuel into th= e spark plug holes to try to get it to fire. I finally squirted 2 stroke o= il into each rotor face using the prop to rotate the engine. I sprayed 2 = to 3 squirts per rotor face using a hand oil dispenser. The engine fired = several times but did not start on the first try =E2=80=93 I let it sit 3 h= ours and tried again. It started and after about 10 seconds it ran smoothl= y. It filled the hanger with smoke burning the oil! > >=20 > > =20 > >=20 > > I figure I must have left some unburned gasoline in the engine = when I tested the starter and this washed most of the oil out of the seals= while sitting a couple of days. Hence no compression. This is only a gues= s - > >=20 > > =20 > >=20 > > I ran it on the ground several times and have flown it about 5 = hours =E2=80=93 everything appears back to normal! > >=20 > > =20 > >=20 > > PS =E2=80=93 I don=E2=80=99t ever measure the rotor=E2=80=99s c= ompression. I only turn the prop thur by hand =E2=80=93 compression is bac= k to normal. > >=20 > > =20 > >=20 > > Dennis Haverlah > >=20 > > RX-8 in RV-7A > >=20 > > About 800 hours > >=20 > > =20 > >=20 > > =20 > >=20 > > =20 > >=20 > > =20 > >=20 > > >=20 >=20 ------=_Part_456548_2100129722.1512012665519 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

I have three customers with RX8's, hav= e had all come in on the hook, in the past years, flooded, cranks fast, no = start-no compression, when winter temps are here, one will be back soon bec= ause he changed nothing, other removed oil injection sys. & now adds 2c= yc to gas, other removed synthetic oil & now uses old fashion REAL oil = (that's what he used in his RX7 for 15 years) has had no prob. (it burn= s, not as well as 2cyc but,,,,,,) he's happy. David R. Cook  RV6A = Rotary Lansing MI.

On November 29, 2017 at= 9:22 PM "Todd Archer archerwt@gmail.com" <flyrotary@lancaironl= ine.net> wrote:

Sou= nds like you got it sorted, Dennis.  I would imagine you are good to g= o.

A standard shutdown practice for injected RX7s (FCs: leaky inje= ctors common) is to goose the engine the instant before turning off ignitio= n.   With the ignition off and the engine at =3D>3k, keep you= r foot to the floor.  This ingests a bunch of air without the fuel.= 60; Minimizes the build-up of raw fuel for the next start.  Pretty muc= h the same as the standard lean-cutoff shutdown in carbureted aircraft engi= nes.

Todd Archer


On 11/29/2017 5:04 PM, Clouduster <= a class=3D"ox-5f01ba025d-moz-txt-link-abbreviated" href=3D"mailto:clouduste= r@austin.rr.com">clouduster@austin.rr.com wrote:

 

I had a no-= start of my RX-8 in my RV-7A about three weeks ago.  I had rebuilt the= engine starter and after re-installing it, I started the engine 3 times to= make sure the starter was performing properly.  Everything was OK.= 60; I got in the airplane 2 days later and the engine turned over but  = ;did not start.  I ran the P 680 battery down trying to start it. = ; I discovered I had NO compression on any of the 6 rotor faces!  I ch= ecked the ignition, injectors and cleaned the plugs.  I also squirted = some fuel into the spark plug holes to try to get it to fire.  I final= ly squirted 2 stroke oil into each rotor face using the prop to rotate the = engine.  I sprayed  2 to 3 squirts per rotor face using a hand oi= l  dispenser.  The engine fired several times but did not start o= n the first try – I let it sit 3 hours and tried again.  It star= ted and after about 10 seconds it ran smoothly.  It filled the hanger = with smoke burning  the oil!

&= #160;

I figure I must have left som= e unburned gasoline in the engine when I tested the starter and this washed= most of  the oil out of the seals while sitting a couple of days. Hen= ce no compression.  This is only a guess -

 

I ran it on the= ground several times and have flown it about 5 hours  – everyth= ing appears back to normal!

 <= /p>

PS – I don’t ever measu= re the rotor’s compression.  I only turn the prop thur by hand &= #8211; compression is back to  normal.

 

Dennis Haverlah

=

RX-8 in RV-7A

About 800 hours

= 60;

 

 

 


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