X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.4.51.88] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0c2) with ESMTP id 711773 for flyrotary@lancaironline.net; Mon, 05 Sep 2005 11:50:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.4.51.88; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 5 Sep 2005 08:50:05 -0700 Message-ID: Received: from 64.4.51.220 by BAY107-DAV16.phx.gbl with DAV; Mon, 05 Sep 2005 15:50:04 +0000 X-Originating-IP: [64.4.51.220] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Another great flying day/ fuel pump Date: Mon, 5 Sep 2005 11:49:58 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0041_01C5B20F.F0C038B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Mon, 5 Sep 2005 11:49:58 -0400 X-OriginalArrivalTime: 05 Sep 2005 15:50:05.0178 (UTC) FILETIME=[7BE69DA0:01C5B231] This is a multi-part message in MIME format. ------=_NextPart_000_0041_01C5B20F.F0C038B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Can't tell you how good it is to hear you are flying (rotaries) again! = I have found that EFI fuel pump life is directly related to how often = they are run dry. If your fuel system requires them to run very long = before it primes, it reduces the life drastically. Laura's old Fiero = would tolerate running out of gas exactly 3 times before needing a new = pump. This test was repeated twice! (Still can't understand how anyone = could gather that kind of data : ) I'd send you a pump today but the new lighter interchangeable fitting = pumps are going like hotcakes and we are out. The supplier is near New = Orleans so resupply may be slow. The old type we sold can be had as an = equivalent at NAPA as part number 2P74028 if you are desperate (I would = be: ) This d@#! storm has affected everything.... Tracy (have laptop, will travel) ----- Original Message -----=20 From: David Leonard=20 To: Rotary motors in aircraft=20 Sent: Sunday, September 04, 2005 10:53 PM Subject: [FlyRotary] Another great flying day =3D another day of = troubleshooting After a great trip to Santa Paula I finally solved my "compressor = surge" issue. Turns out that it was SAG (Spark plug induced Attention = Getter) all along. Sigh.. Despite the fact that the plugs were only a = handful of hours old, and they worked fine at MAPs in the N.A. range. I = was convinced that my power drop issue was surge because it seemed = directly related to pressure ratio... I finally change out the spark plug and wala... no issue. Now i sort = of wish I didn't cut off the waste-gate flapper.... oh well. But life with an auto conversion seems never without an issue or two. Went out to the plane yesterday ready for a flight but found a puddle = of coolant underneath... sigh... turns out that my lower radiator cap went bad. Easy enough. Return = the next day and install a new one. Give everything a good once over = and discover a broken alternator tension arm!!! Holy S*(^ !! Broken = clean through but not displaced very far (hard to notice). From the = looks of it, the thing has been broken for at least 20 flight hours! = Hmmm.=20 So I went home and made a new one - same design until I can come up = with better materials and/or design. Looking at the old one there was = the end of a hacksaw cut right where break occurred. I should have been = more careful grinding it out. =20 So that is fixed for the time being and I went flying with a friend in = an RV-8 with a 180h.p. and c/s prop. Except for initial acceleration on = ground roll, I could out perform him in climb and cruise even with my = f.p . prop. :-) COOL!!!! But then I found my next problem.... Return fuel flow started drooping. Where I normally see 30+ gph = returned to the tank, I was seeing about 20gph. We landed for lunch and = I searched for signs of a fuel leak - none. Fuel flow seem normal on = the ground, as did fuel usage for the flight. hmmm. =20 On the way home the problem recurred, and flow continued to dwindle. = at 4gph I turned on the aux pump and solved the problem. Sure was nice = to have 2 of them. I always pictured these pumps failing all of a sudden, but this one = just sort of faded. Has anyone had experience with this? I will check = the wiring and fuel filter... and report back. Only 150 hrs on this = pump.... I hope the next one last longer....=20 --=20 Dave Leonard (just ordered a replacement pump from Tracy - but he is = going away... sigh) Turbo Rotary RV-6 N4VY http://members.aol.com/_ht_a/rotaryroster/index.html = = http://members.aol.com/_ht_a/vp4skydoc/index.html ------=_NextPart_000_0041_01C5B20F.F0C038B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Can't tell you how good it is to hear you are flying (rotaries)=20 again!  I have found that EFI fuel pump life is directly related to = how=20 often they are run dry.  If your fuel system requires them to run = very long=20 before it primes, it reduces the life drastically.  Laura's old = Fiero would=20 tolerate running out of gas exactly 3 times before needing a new = pump. =20 This test was repeated twice!  (Still can't understand how anyone = could=20 gather that kind of data : )
 
I'd send you a pump today but the new lighter interchangeable = fitting pumps=20 are going like hotcakes and we are out.  The supplier is near New = Orleans=20 so resupply may be slow.  The old type we sold can be had as an = equivalent=20 at NAPA as part number 2P74028 if you are desperate (I would be:=20 ) This d@#! storm has affected everything....
 
Tracy  (have laptop, will travel)
----- Original Message -----
To: Rotary motors in = aircraft
Sent: Sunday, September 04, = 2005 10:53=20 PM
Subject: [FlyRotary] Another = great flying=20 day =3D another day of troubleshooting

After a great trip to Santa Paula I finally solved my "compressor = surge"=20 issue.  Turns out that it was SAG (Spark plug induced Attention = Getter)=20 all along.  Sigh..   Despite the fact that the plugs = were only=20 a handful of hours old, and they worked fine at MAPs in the N.A. = range. =20 I was convinced that my power drop issue was surge because it seemed = directly=20 related to pressure ratio...
 
I finally change out the spark plug and wala... no issue.  = Now i=20 sort of wish I didn't cut off the waste-gate flapper....  oh = well.
 
But life with an auto conversion seems never without an issue or=20 two.
 
Went out to the plane yesterday ready for a flight but found a = puddle of=20 coolant underneath...  sigh...
 
turns out that my lower radiator cap went bad.  Easy = enough. =20 Return the next day and install a new one.  Give everything a = good once=20 over and discover a broken alternator tension arm!!!   Holy = S*(^=20 !!  Broken clean through but not displaced very far (hard to=20 notice).  From the looks of it, the thing has been broken for at = least 20=20 flight hours!   Hmmm.
 
So I went home and made a new one - same design until I can come = up with=20 better materials and/or design.  Looking at the old one there was = the end=20 of a hacksaw cut right where break occurred.  I should have been = more=20 careful grinding it out. 
 
So that is fixed for the time being and I went flying with a = friend in an=20 RV-8 with a 180h.p. and c/s prop.  Except for initial = acceleration on=20 ground roll, I could out perform him in climb and cruise even with my = f.p .=20 prop.   :-)  COOL!!!!
 
But then I found my next problem....
 
Return fuel flow started drooping.  Where I normally see 30+ = gph=20 returned to the tank, I was seeing about 20gph.  We landed for = lunch and=20 I searched for signs of a fuel leak - none.  Fuel flow seem = normal on the=20 ground, as did fuel usage for the flight.  hmmm. 
 
On the way home the problem recurred, and flow continued to=20 dwindle.  at 4gph I turned on the aux pump and solved the = problem. =20 Sure was nice to have 2 of them.
 
I always pictured these pumps failing all of a sudden, but this = one just=20 sort of faded.  Has anyone had experience with this?  I will = check=20 the wiring and fuel filter... and report back.  Only 150 hrs on = this=20 pump.... I hope the next one last longer....

-- =
Dave=20 Leonard (just ordered a replacement pump from Tracy - but he is going=20 away...  sigh)
Turbo Rotary RV-6 N4VY
http://memb= ers.aol.com/_ht_a/rotaryroster/index.html=20
http://members= aol.com/_ht_a/vp4skydoc/index.html=20
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