Return-Path: <13brv3@bellsouth.net> Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 856649 for flyrotary@lancaironline.net; Tue, 05 Apr 2005 23:07:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.65; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050406030624.XTLW2001.imf17aec.mail.bellsouth.net@rd> for ; Tue, 5 Apr 2005 23:06:24 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Flyrotary List" Subject: Rev 4 update Date: Tue, 5 Apr 2005 22:04:21 -0500 Message-ID: <000001c53a55$561efdf0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C53A2B.6D48F5F0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C53A2B.6D48F5F0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Greetings, =20 The rev-4 configuration is done, with the exception of touching up the tuning. Controller A is running pretty well as is, but I'll tie the = plane down and make at least a couple runs through the MAP table to fix = anything that's too far out. After that, the only remaining item is to fly. =20 I ended up making an aluminum expansion tank, and installed it at the = top of the firewall. It has two fittings on the bottom, which go to the inlet, = and outlet of the water pump housing, to act as an air separator tank. = There is another fitting at the top that goes out to the overflow jug. I = installed one of the optical level sensors about 1-1/4" from the bottom of the = tank, so I'll know if the level drops. The new tank holds about 37 ounces, = and I could actually do away with the overflow jug if I need to. For now, = I'll keep it though. =20 =20 I'm still running the Evan's NPG-R coolant at 0 pressure, but found that = the zero pressure cap that Evan's sells leaks air. It doesn't seem to leak coolant out, but when the engine cools, it sucks air in, rather than coolant, which is not ideal. I ended up putting my old 30 psi cap back = on, since it makes a positive seal inside the filler neck. I then removed = my coolant pressure sender, which was only about an inch below the cap. A = pipe nipple installed in that hole is now my pressure out to the new tank. Unfortunately, the suction side connection required removal of my temp sensor at the inlet of the water pump housing. That means there won't = be any measurements of the temp drop across the evap cores. =20 I taxied all over the airport today, and made a general nuisance of = myself. Probably ran about an hour. I did a number of extended runs from 4000 = to 5000. The plane is in significant danger of nosing over at 5000 rpm, so = I didn't go any higher while holding it stationary. I did run it to 5000, then release the brakes and advance to near full throttle. The most I = saw was 6100, but the FJO wideband said I was at 10.X AFR, so far richer = than best power. I expect to see at least 6400 static, at least when the = engine loosens up some. Oil never went over 155 (no duct in place), and the Evan's got as high as 185 (ducts in place). The acceleration on those = test runs was stunning! =20 =20 When I didn't have the prop on the plane, I was able to idle as low as = 800 or so, but now, it sounds like I'm getting into gearbox rattle mode at 1100-1200 rpm. For the time being, I've set the idle at 1400. I know = that the gearbox will rattle at some rpm, but I don't recall hearing what = that was. What are you other RD1 guy's idling at? =20 All in all, I'm pretty happy with what I've seen so far. Each revision = just gets better, which of course is the point :-)=20 =20 Cheers, Rusty (can't wait to hear how Ed's new intake flies) =20 =20 =20 =20 ------=_NextPart_000_0001_01C53A2B.6D48F5F0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Greetings,
 
The rev-4 = configuration is=20 done, with the exception of touching up the tuning.  Controller A = is=20 running pretty well as is, but I'll tie the plane down and make at least = a=20 couple runs through the MAP table to fix anything that's too far=20 out.   After that, the only remaining item is to=20 fly.
 
I ended up = making an=20 aluminum expansion tank, and installed it at the top of = the firewall. =20 It has two fittings on the bottom, which go to the inlet, and outlet of = the=20 water pump housing, to act as an air separator tank.  There is = another=20 fitting at the top that goes out to the overflow jug.  I installed = one of=20 the optical level sensors about 1-1/4" from the bottom of the tank, so = I'll know=20 if the level drops.  The new tank holds about 37 ounces, and I = could=20 actually do away with the overflow jug if I need to.  For now, I'll = keep it=20 though. 
 
I'm still = running the=20 Evan's NPG-R coolant at 0 pressure, but found that the zero pressure cap = that=20 Evan's sells leaks air.  It doesn't seem to leak coolant out, but = when the=20 engine cools, it sucks air in, rather than coolant, which is not = ideal.  I=20 ended up putting my old 30 psi cap back on, since it makes a positive = seal=20 inside the filler neck.  I then removed my coolant pressure sender, = which=20 was only about an inch below the cap.  A pipe nipple installed in = that hole=20 is now my pressure out to the new tank.  Unfortunately, the suction = side=20 connection required removal of my temp sensor at the inlet of the water = pump=20 housing.  That means there won't be any measurements of the temp = drop=20 across the evap cores.
 
I taxied all = over the=20 airport today, and made a general nuisance of myself.  Probably ran = about=20 an hour.  I did a number of extended runs from 4000 to 5000.  = The=20 plane is in significant danger of nosing over at 5000 rpm, so I didn't = go any=20 higher while holding it stationary.  I did run it to 5000, then = release the=20 brakes and advance to near full throttle.  The most I saw was=20 6100, but the FJO wideband said I was at 10.X AFR, so far richer = than best=20 power.  I expect to see at least 6400 static, at least when the = engine=20 loosens up some.   Oil never went over 155 (no duct in place), = and the=20 Evan's got as high as 185 (ducts in place).  The acceleration on = those test=20 runs was stunning! 
 
When I didn't = have the prop=20 on the plane, I was able to idle as low as 800 or so, but now, it sounds = like=20 I'm getting into gearbox rattle mode at 1100-1200 rpm.  For the = time being,=20 I've set the idle at 1400.  I know that the gearbox will rattle at = some=20 rpm, but I don't recall hearing what that was.  What are you other = RD1=20 guy's idling at?
 
All in all, I'm = pretty=20 happy with what I've seen so far.  Each revision just gets better, = which of=20 course is the point :-) 
 
Cheers,
Rusty (can't = wait to hear=20 how Ed's new intake flies)
 
 
 
 =20
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