Return-Path: <13brv3@bellsouth.net> Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.1.4) with ESMTP id 2606469 for flyrotary@lancaironline.net; Sat, 27 Sep 2003 20:55:42 -0400 Received: from rad ([68.212.13.204]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030928005541.VOKK1821.imf17aec.mail.bellsouth.net@rad> for ; Sat, 27 Sep 2003 20:55:41 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Flyrotary List" Subject: Life is better at 5 psi Date: Sat, 27 Sep 2003 19:55:46 -0500 Message-ID: <005201c3855b$40972030$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0053_01C38531.57C11830" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0053_01C38531.57C11830 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Greetings, =20 I took the plane out again today, and found it to be MUCH more = satisfying at 5 psi of boost. I ordered another excellent used 89-91 turbo off Ebay today, and I'm going to pick up a crack free exhaust manifold to go with = it. Before I install the new turbo, I'll port the crap out of the wastegate, = to see if I can get down to something more reasonable, like 5 psi, rather = than 10+ like I get now. If that works, I can actually use full throttle, = which will make me, and Lynn happy (see Lynn, I do pay attention). I'm also trying to pick up an 87-88 turbo actuator, which was only 5.5 psi I = think. =20 =20 As I mentioned before, the new cowl is on order, and I'm starting to = work out the details to get this all inside the stock cowl. I can't imagine = how nice it might fly without all the cowl and tire drag. Realistically, it will probably be around the first of the year before this all happens, = but at least I'm back on track, and excited about doing it all. Thanks for putting up with my earlier depression. This IS going to work, and it IS going to be the hotrod I hoped for. =20 =20 Cheers, Rusty (psyched again) =20 =20 =20 9-27-03 .7 hrs / 2.7 total =20 Started my climb out at 4 psi of boost, then modified to 5 psi around a thousand feet or so. I couldn't get any rational VSI readings from the Anywhere map, but it sure did climb better than ever. The oil and water both stayed right at 180 degrees, so no problems there. I had the usual ceiling of about 2500 ft, so I couldn't go higher for any real testing. Here are the numbers for 14 degrees of pitch: =20 Boost (over ambient) / MAP / RPM / MPH Climb 4 psi / 38" / 5600 / 100 5 psi / 40" / 5800 / 100 =20 Cruise at 2000 ft 0 psi / 28" / 5600 / 130 3 psi / 34" / 6000 / 145 5 psi / 38" / 6300 / 155 =20 Once I returned (with another beautiful landing I might add), I planned = to fill the tanks, and increase the pitch of the prop to 16 degrees. =20 =20 Unfortunately, I found that my left brake line is leaking again. The = line was made of slightly softer aluminum than Van may have had in mind, but = I can't figure out what was actually in the RV-8, and he doesn't spec the material for the RV-3 either, so I thought I'd give it a try. I left a = loop of brake line at the caliper, and I believe that vibration is causing = this to break at the flare. After one of the early leaks, the brake on the = left has been "chattering", rather than smoothly braking, so I figured it = must have been soaked with fluid. To make sure this never happens again, I = will replace the pads (which are 22 years old) on both brakes, and replace = the lines with stronger aluminum. I will also get rid of the loop of line, since it could be part of the problem. It'll be nice weather tomorrow, = but I won't be flying. =20 =20 I found one other problem today, my air vent sucks, and I mean = literally. Rather than blowing air on me like it's supposed to, it has a pretty = large suction on it. One way or another, air is coming in, so I guess it's = still ventilation. =20 ------=_NextPart_000_0053_01C38531.57C11830 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Greetings,
 
I took the = plane out again=20 today, and found it to be MUCH more satisfying at 5 psi of boost.  = I=20 ordered another excellent used 89-91 turbo off Ebay today, and I'm going = to pick=20 up a crack free exhaust manifold to go with it.  Before I install = the new=20 turbo, I'll port the crap out of the wastegate, to see if I can get down = to=20 something more reasonable, like 5 psi, rather than 10+ like I get = now.  If=20 that works, I can actually use full throttle, which will make me, and = Lynn happy=20 (see Lynn, I do pay attention).   I'm also trying to pick = up an=20 87-88 turbo actuator, which was only 5.5 psi I think.  =
 
As I mentioned = before, the=20 new cowl is on order, and I'm starting to work out the details to get=20 this all inside the stock cowl.  I can't imagine how nice it = might fly=20 without all the cowl and tire drag.  Realistically, it will = probably be=20 around the first of the year before this all happens, but at least = I'm back=20 on track, and excited about doing it all.   Thanks for putting = up with=20 my earlier depression.  This IS going to work, and it IS going to = be the=20 hotrod I hoped for. 
 
Cheers,
Rusty (psyched=20 again)
 
 
 

9-27-03  .7 hrs  / =20 2.7 total

 

Started my climb out=20 at 4 psi of boost, then modified to 5 psi around a thousand feet or = so.  I couldn’t get any = rational VSI readings=20 from the Anywhere map, but it sure did climb better than ever.  The oil and water both stayed = right at=20 180 degrees, so no problems there. =20 I had the usual ceiling of about 2500 ft, so I couldn’t go = higher for any=20 real testing.  Here are = the numbers=20 for 14 degrees of pitch:

 

Boost = (over ambient)=20 / MAP / RPM / MPH

Climb

4 psi = / 38” / 5600 /=20 100

5 psi = / 40” / 5800 /=20 100

 

Cruise = at 2000=20 ft

0 psi = / 28” / 5600 /=20 130

3 psi = / 34” / 6000 /=20 145

5 psi = / 38” / 6300 /=20 155

 

Once I = returned=20 (with another beautiful landing I might add), I planned to fill the = tanks, and=20 increase the pitch of the prop to 16 degrees. 

 

Unfortunately, I=20 found that my left brake line is leaking again.  The line was made of slightly = softer=20 aluminum than Van may have had in mind, but I can’t figure out = what was actually=20 in the RV-8, and he doesn’t spec the material for the RV-3 either, = so I thought=20 I’d give it a try.  = I left a loop of=20 brake line at the caliper, and I believe that vibration is causing this = to break=20 at the flare.  After one = of the=20 early leaks, the brake on the left has been “chattering”, = rather than smoothly=20 braking, so I figured it must have been soaked with fluid.  To make sure this never = happens again, I=20 will replace the pads (which are 22 years old) on both brakes, and = replace the=20 lines with stronger aluminum.  = I=20 will also get rid of the loop of line, since it could be part of the=20 problem.  It’ll be = nice weather=20 tomorrow, but I won’t be flying.  =20    

 

I = found one other=20 problem today, my air vent sucks, and I mean literally.  Rather than blowing air on me = like it’s=20 supposed to, it has a pretty large suction on it.  One way or another, air is = coming in, so=20 I guess it’s still ventilation. =20

------=_NextPart_000_0053_01C38531.57C11830--