Return-Path: <13brv3@bellsouth.net> Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 759739 for flyrotary@lancaironline.net; Fri, 25 Feb 2005 17:02:40 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf24aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050225220155.QQCZ2033.imf24aec.mail.bellsouth.net@rd> for ; Fri, 25 Feb 2005 17:01:55 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] EWP; was E-shaft permanent magnet alternator Date: Fri, 25 Feb 2005 16:02:27 -0600 Message-ID: <000001c51b85$b1f12b60$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C51B53.6756BB60" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C51B53.6756BB60 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I don't really feel that I'm "getting away" with anything. While we do = have some cold winters (this one was quite mild.. and almost over), we don't = live in our igloos all year long and we do see some hot weather in the = summer. Maybe I'll have time for a trip to Southern BC this summer during some = hot weather.=20 =20 I'm not sure where Todd is exactly, but for kicks, I went to the weather channels page, and looked up the monthly average temps for the following locations. What's shown is the temp for the hottest month in the = summer. =20 =20 Edmonton Alberta Canada- 73 Calgary Canada- 74 Prince George BC Canada- 71 Miami FL- 87 =20 Tampa FL- 90 Jacksonville FL- 91 Pensacola FL- 91=20 =20 As you can see, this isn't exactly fire and ice. I was actually = surprised to see that we're 4 degrees hotter on average than south Florida. =20 In the meantime Rusty is in a perfect position to begin this = testing. He has his engine rebuilt but not yet reinstalled? He also happens to have = 2 DC EWP's. And he lives down in the banana belt.=20 Well, the RV-3 engine is installed, and I hope to have it running this weekend. I am in the perfect position to test this though, since I have = my EWP running in series with the mechanical pump. I have in fact tested = this on the ground, by removing the single belt that runs the mechanical = pump, and alternator. Even for a short flight, I'm uncomfortable with the thought of taking off with no alternator. During my break-in time, I = plan to measure currents required, and also verify the length of time that = the engine will run with no alternator. Perhaps I'll be willing to make a = short flight based on those results. No promises though. My wife would not = be as understanding about a 2nd dead stick landing. =20 My only concern would be that I believe Rusty already has one of the Mezeire adapter plates and would likely just use this. I agree that it = is a nice piece of work, but it looks (from the pic) a little restrictive = (no, lets not get into the restriction topic again:-). I built my own to = allow the use of 1.25" hose for inlet & outlet. Since Rusty has recently demonstrated his ability to fabricate items such as this, it should be = an easy task.=20 No fabrication required. The latest Meziere adapter has two AN-16 = straight thread o-ring ports, which have a 1" ID. I have two fittings that = convert this to 1.25" hose nipples, which is the same as the native Davies Craig fitting. I have these items for use on the single rotor engine though. Eliminating the water pump housing on the RV-3 engine would involve more work than I care to do at the moment, but I will at some point get = around to doing that. Maybe when the e-shaft alternator rolls around. =20 Todd Bartrim (hoping to land my plane at home soon) I now officially hate you :-) =20 Cheers, Rusty (hoping the girls kick Todd's butt in hockey again)=20 ------=_NextPart_000_0001_01C51B53.6756BB60 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
I don't = really feel that=20 I'm "getting away" with anything. While we do have some cold winters = (this one=20 was quite mild.. and almost over), we don't live in our igloos all year = long and=20 we do see some hot weather in the summer. Maybe I'll have time for a = trip to=20 Southern BC this summer during some hot weather. 
 
I'm not sure = where Todd is=20 exactly, but for kicks, I went to the weather channels page, and = looked up=20 the monthly average temps for the following locations.  What's = shown is the=20 temp for the hottest month in the summer. =20
 
Edmonton = Alberta Canada-=20 73
Calgary=20 Canada- 74
Prince=20 George BC Canada- 71
Miami FL- = 87 =20
Tampa FL-=20 90
Jacksonville = FL-=20 91
Pensacola FL-=20 91 
 
As you can see, this isn't = exactly fire=20 and ice.  I was actually surprised to see that we're 4 degrees = hotter on=20 average than south Florida. 

    In the=20 meantime Rusty is in a perfect position to begin this testing. He has = his engine=20 rebuilt but not yet reinstalled? He also happens to have 2 DC EWP's. And = he=20 lives down in the banana belt. 

Well, the = RV-3 engine=20 is installed, and I hope to have it running this weekend.  I am in = the=20 perfect position to test this though, since I have my EWP running in = series with=20 the mechanical pump.  I have in fact tested this on the = ground,=20 by removing the single belt that runs the mechanical pump, and=20 alternator.   Even for a short flight, I'm uncomfortable with = the=20 thought of taking off with no alternator.  During my break-in = time, I=20 plan to measure currents required, and also verify the length of time = that the=20 engine will run with no alternator.  Perhaps I'll be willing to = make a=20 short flight based on those results.  No promises though. =20 My wife would not be as understanding about a 2nd dead stick=20 landing.     

 My only concern would be that I = believe=20 Rusty already has one of the Mezeire adapter plates and would likely = just use=20 this. I agree that it is a nice piece of work, but it looks (from the = pic) a=20 little restrictive (no, lets not get into the restriction topic = again:-). I=20 built my own to allow the use of 1.25" hose for inlet & outlet. = Since Rusty=20 has recently demonstrated his ability to fabricate items such as this, = it should=20 be an easy task. 

No fabrication required.  The latest = Meziere=20 adapter has two AN-16 straight thread o-ring ports, which have a 1" = ID.  I have two fittings that convert this to 1.25" hose nipples, = which is=20 the same as the native Davies Craig fitting.  I have these = items for=20 use on the single rotor engine though.  Eliminating the water = pump=20 housing on the RV-3 engine would involve more work than I care to do at = the=20 moment, but I will at some point get around to doing that.  Maybe = when the=20 e-shaft alternator rolls=20 around.    

Todd = Bartrim   =20 (hoping to land my plane at home soon)

 I now=20 officially hate you :-)  

Cheers,
Rusty (hoping the girls kick Todd's butt in hockey=20 again) 
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