X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 929004 for flyrotary@lancaironline.net; Mon, 16 Jan 2006 17:54:23 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=atlasyts@bellsouth.net Received: from ibm66aec.bellsouth.net ([70.149.4.85]) by imf23aec.mail.bellsouth.net with ESMTP id <20060116225338.DJHH17810.imf23aec.mail.bellsouth.net@ibm66aec.bellsouth.net> for ; Mon, 16 Jan 2006 17:53:38 -0500 Received: from [192.168.0.100] (really [70.149.4.85]) by ibm66aec.bellsouth.net with ESMTP id <20060116225336.LINT19353.ibm66aec.bellsouth.net@[192.168.0.100]> for ; Mon, 16 Jan 2006 17:53:36 -0500 Mime-Version: 1.0 (Apple Message framework v746.2) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-1-231047308 Message-Id: <32AB5942-2C47-4C83-8BD7-4FB7D48FB374@bellsouth.net> From: Bulent Aliev Subject: Re: [FlyRotary] Re: shake, rattle and hum Date: Mon, 16 Jan 2006 17:53:57 -0500 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.746.2) --Apple-Mail-1-231047308 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=WINDOWS-1252; delsp=yes; format=flowed Georges, Call Brian at Prolink 954-829-8603. He may be able to help. Bulent "Buly" Aliev http://tinyurl.com/dcy36 On Jan 15, 2006, at 9:01 PM, Echo Lake Fishing Resort (Georges =20 Boucher) wrote: > Rusty > Just a thought, would changing the prop position in by one or two =20 > bolt holes make a difference? By the way guys after dismantling 5 =20 > 13bs I still don't have any good rotor housings. Has any one got a =20 > couple of mint ones for sale? I'm in Canada. > Georges B. > > -------Original Message------- > > From: Russell Duffy > Date: 01/15/06 17:04:34 > To: Rotary motors in aircraft > Subject: [FlyRotary] shake, rattle and hum > > Greetings, > > I went out to the airport this afternoon to try to add some =20 > flywheel weight to the single rotor. Installed longer AN-7 bolts, =20 > each with an additional 4 larger washers, and 5 small washers. =20 > This added about 26 ounces to the flexplate, at the 4 dampener bolt =20= > locations. > > Unfortunately, it didn=92t change a thing wrt the vibration issues, =20= > or prop oscillation. Still shaky around 1000 rpm, severe drive =20 > rattle around 1900-2000 rpm (can't bear to try to find the exact =20 > range), and severe vibration from 2500-3100. =46rom 3300 to 5000 =20 > it's pretty smooth, but with the scary prop oscillation getting =20 > worse and worse as the rpm increases. > > Not sure what to try next. I do have a two blade IVO prop that I =20 > could try in place of the 3 blade Warp Drive, but I=92d have to cut =20= > the blades down from 72=94 to 68=94 to clear the fuselage tube. The =20= > torque reversals might not be the best thing for an IVO prop =20 > either. I=92m starting to fear that someone=92s going to get a deal = on =20 > an RD-1C drive while I look for another solution, and build an RV-8. > > I=92m still finding that I don=92t have enough fuel at anything above =20= > idle. I was actually having to run the cold start, and mixture =20 > above 12:00 to have a mid range O2 reading at 3000-4000 rpm. I set =20= > mode 3 today, and kept raising the fuel until I got a mid range =20 > reading with the mixture at 12:00, and no cold start engaged. This =20= > took 24 clicks!!! Something just ain't right here... > > Before I started today, I checked the fuel pressure using a mighty-=20 > vac pump to simulate changes to the MAP line. The regulator =20 > changed pressure just like it=92s supposed to. > > I made myself a note to check the fuel pressure calibration again =20 > the next time I go to the hanger. I set this using a different =20 > sensor, that I believed to be the same as the one that=92s installed =20= > on the regulator. That should have gotten me very close, unless I =20 > accidentally used a sensor that was different (30 psi rather than =20 > 80 psi for example). Once I had the fuel pressure =93calibrated=94 on = =20 > the EM-2, I used that reading to set the adjustable regulator for =20 > 42 psi. Maybe my pressure "reads" 42 psi, but is really way low, =20 > like 15 psi or so. > > If the fuel pressure is correct, I=92ll have to look into the =20 > injectors themselves. They=92re 400 cc/min MSD injectors, just like =20= > what was on the RV-3. These were ordered just for this, and never =20 > used on anything else, so maybe I was sent something smaller than =20 > 400 cc/min. Worst case, I have a pair of 525=92s that I can install =20= > if needed. > > Ah, the fun begins. Pity I don't have time to fiddle with this =20 > much now. The QB RV-8 will be here soon. > > Cheers, > Rusty (the weather geek) > > PS- The following link is the weather station in my back yard. =20 > The wind gust readings don't seem to be reporting correctly by the =20 > Weather Underground software, but otherwise, it's pretty cool. My =20 > hope is that we'll never get another hurricane, now that I'm set up =20= > to record the wind conditions. > > http://www.weatherunderground.com/weatherstation/WXDailyHistory.asp?=20= > ID=3DKFLNAVAR7 > > > --Apple-Mail-1-231047308 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=WINDOWS-1252 Georges,
Call Brian at = Prolink=A0954-829-8603. He may be able to help.
Bulent "Buly" = Aliev

 =

On Jan 15, 2006, at 9:01 PM, Echo Lake Fishing = Resort (Georges Boucher) wrote:

=
Rusty
Just a thought, would changing the prop position = in=A0by one or two bolt holes make a difference? By the way guys after = dismantling 5 13bs I still don't have any good rotor housings. Has any = one got a couple of mint ones for sale? I'm in Canada.
=
Georges B.=A0
=A0
-------Original = Message-------
=A0
Date: 01/15/06 = 17:04:34
Subject: [FlyRotary] shake, rattle and = hum
=A0
Greetings,
=A0
=
I went out to the = airport this afternoon to try to add some flywheel weight to the single = rotor.=A0 Installed longer AN-7 bolts, each with an additional 4 = larger washers, and 5 small washers.=A0 = This added about 26 ounces to the flexplate, at the 4 dampener = bolt locations.

=A0

Unfortunately, it didn=92t change a thing wrt the = vibration issues, or prop oscillation.=A0=A0Still shaky around 1000 = rpm, severe drive rattle around 1900-2000 rpm (can't bear to try to find = the exact range),=A0 and severe vibration from 2500-3100.=A0 =46rom 3300 = to 5000 it's pretty smooth, but with the scary prop oscillation getting = worse and worse as the rpm increases.=A0
=A0
Not sure what to try next.=A0 I do have a two blade IVO prop = that I could try in place of the 3 blade Warp = Drive, but I=92d have to cut the blades down = from 72=94 to 68=94 to clear the fuselage tube.=A0=A0The = torque reversals might not be the best thing for an IVO prop either.=A0 = I=92m starting to fear that someone=92s going to get a = deal on an RD-1C drive while I look for another solution, and build an RV-8.=A0
=A0
I=92m still finding that I = don=92t have enough fuel at anything above idle.=A0 I was actually having to run the = cold start, and mixture above 12:00 to have a mid range O2 reading at = 3000-4000 rpm.=A0 I set mode 3 = today, and kept raising the fuel until I got a mid range reading with = the mixture at 12:00, and = no cold start engaged.=A0 This = took 24 clicks!!!=A0=A0Something just ain't right here...=A0 =
=A0
Before I started today, I checked the fuel pressure using = a mighty-vac pump to simulate changes to the MAP line.=A0 The regulator changed pressure = just like it=92s supposed to.
=A0
I made myself a note to check = the fuel pressure calibration again the next time I go to the = hanger.=A0 I set this using a = different sensor, that I believed to be the same as the one that=92s = installed on the regulator.=A0 = That should have gotten me very close, unless I accidentally used = a sensor that was different (30 psi rather than 80 psi for = example).=A0 Once I had the = fuel pressure =93calibrated=94 on the EM-2, I used that reading to set = the adjustable regulator for 42 psi.=A0 = Maybe my pressure=A0"reads" 42 psi, but is really way low, = like 15 psi or so.
=A0
If the fuel pressure is correct, I=92ll have to look into = the injectors themselves.=A0 = They=92re 400 cc/min MSD injectors, just like what was on the = RV-3.=A0 These were ordered = just for this, and never used on anything else, so maybe I was sent = something smaller than 400 cc/min.=A0 = Worst case, I have a pair of 525=92s that I can install if = needed.=A0=A0

=A0

Ah, the fun = begins.=A0=A0Pity I don't have time to fiddle with this much now. The QB = RV-8 will be here soon.=A0=A0

=A0

Cheers,
Rusty (the = weather=A0geek)

=A0=

PS-=A0=A0The following link is the weather station = in my back yard.=A0 The wind gust readings don't seem to be reporting = correctly by the Weather Underground software, but otherwise, it's = pretty cool.=A0 My hope is that we'll never get another hurricane, now = that I'm set up to record the wind conditions.=A0 =

=A0

=A0

=A0

=A0

= --Apple-Mail-1-231047308--