Return-Path: Received: from sccrmhc13.comcast.net ([204.127.202.64] verified) by logan.com (CommuniGate Pro SMTP 4.1.4) with ESMTP id 2606479 for flyrotary@lancaironline.net; Sat, 27 Sep 2003 21:09:52 -0400 Received: from rv8 (12-225-206-211.client.attbi.com[12.225.206.211]) by comcast.net (sccrmhc13) with SMTP id <2003092801095101600t1vhoe>; Sun, 28 Sep 2003 01:09:51 +0000 Message-ID: <001b01c3855d$353c8fc0$d3cee10c@rv8> From: "kevin lane" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Life is better at 5 psi Date: Sat, 27 Sep 2003 18:09:43 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0018_01C38522.86DABBD0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0018_01C38522.86DABBD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageRusty - as airplane builders we all must be eternal optimists. = It is great to hear you get back the spirit. I commend you on sharing = both your accomplishments and follies with us all. I hope you realize = that we are all behind you and want nothing other than total success for = your project. It is easy to throw out terms such as "guinea pig", but = truthfully we view you as "the professor". I hope our encouragement and = interest will help you get through these trials. All of this is so = symbolic of life, no? So we all pick to follow the lemmings, the sheep, = or the eagles( we always say eagles even though the buzzards are = incredible fliers, not to mention the blue herons and pelicans :-)) please note that my -6A uses a large loop from the gear leg to the = caliper, which reduces the fatigue on this joint. It has worked fine = for 1000 hrs. Avoid a single tight bend, these don't take the flexing = without breaking. Kevin Lane Portland, OR e-mail-> n3773@comcast.net web-> http://home.comcast.net/~n3773 (browse w/ internet explorer) ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Saturday, September 27, 2003 5:55 PM Subject: [FlyRotary] Life is better at 5 psi Greetings, 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 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 Cheers, Rusty (psyched again) 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_0018_01C38522.86DABBD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Rusty - as airplane builders = we all must=20 be eternal optimists.  It is great to hear you get back the = spirit.  I=20 commend you on sharing both your accomplishments and follies with us = all. =20 I hope you realize that we are all behind you and want nothing other = than total=20 success for your project.  It is easy to throw out terms such as = "guinea=20 pig", but truthfully we view you as "the professor".  I hope our=20 encouragement and interest will help you get through these trials.  = All of=20 this is so symbolic of life, no?  So we all pick to follow the = lemmings,=20 the sheep, or the eagles( we always say eagles even though the buzzards = are=20 incredible fliers, not to mention the blue herons and pelicans = :-))
 
please note that my -6A uses = a large loop=20 from the gear leg to the caliper, which reduces the fatigue on this = joint. =20 It has worked fine for 1000 hrs.  Avoid a single tight bend, these = don't=20 take the flexing without breaking.
Kevin Lane  Portland, OR
e-mail-> n3773@comcast.net
web-> http://home.comcast.net/~n3773
(browse=20 w/ internet explorer)
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Saturday, September 27, = 2003 5:55=20 PM
Subject: [FlyRotary] Life is = better at 5=20 psi

Greetings,
 
I took the = plane out=20 again today, and found it to be MUCH more satisfying at 5 psi of = boost. =20 I ordered another excellent used 89-91 turbo off Ebay today, and I'm = going to=20 pick up a crack free exhaust manifold to go with it.  Before I = install=20 the new turbo, I'll port the crap out of the wastegate, to see if I = can get=20 down to something more reasonable, like 5 psi, rather than 10+ like I = get=20 now.  If that works, I can actually use full throttle, which will = make=20 me, and Lynn happy (see Lynn, I do pay attention).   I'm=20 also trying to pick up an 87-88 turbo actuator, which was only = 5.5 psi I=20 think. 
 
As I = mentioned before,=20 the 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=20 fly without all the cowl and tire drag.  Realistically, it will = probably=20 be around the first of the year before this all happens, but at = least I'm=20 back on track, and excited about doing it all.   Thanks for = putting=20 up with my earlier depression.  This IS going to work, and it IS = going to=20 be the hotrod I hoped for. 
 
Cheers,
Rusty = (psyched=20 again)
 
 
 

9-27-03  .7 hrs  /  2.7 total

 

Started my climb=20 out at 4 psi of boost, then modified to 5 psi around a thousand feet = or=20 so.  I couldn=92t get = any rational=20 VSI readings from the Anywhere map, but it sure did climb better than=20 ever.  The oil and water = both=20 stayed right at 180 degrees, so no problems there.  I had the usual ceiling of = about 2500=20 ft, so I couldn=92t go higher for any real testing.  Here are the numbers for 14 = degrees of=20 pitch:

 

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

Climb

4 = psi / 38=94 / 5600=20 / 100

5 = psi / 40=94 / 5800=20 / 100

 

Cruise at 2000=20 ft

0 = psi / 28=94 / 5600=20 / 130

3 = psi / 34=94 / 6000=20 / 145

5 = psi / 38=94 / 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=92t figure out what = was=20 actually in the RV-8, and he doesn=92t spec the material for the RV-3 = either, so=20 I thought I=92d give it a try.  = I=20 left a loop of brake line at the caliper, and I believe that vibration = is=20 causing this to break at the flare. =20 After one of the early leaks, the brake on the left has been=20 =93chattering=94, rather than smoothly braking, so I figured it must = have been=20 soaked with fluid.  To = make sure=20 this never happens again, I will replace the pads (which are 22 years = old) on=20 both brakes, and replace the lines with stronger aluminum.  I will also get rid of the = loop of=20 line, since it could be part of the problem.  It=92ll be nice weather = tomorrow, but I=20 won=92t be flying.   =    

 

I = found one other=20 problem today, my air vent sucks, and I mean literally.  Rather than blowing air on = me like=20 it=92s supposed to, it has a pretty large suction on it.  One way or another, air is = coming in,=20 so I guess it=92s still ventilation. =20

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