X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2440138 for flyrotary@lancaironline.net; Tue, 30 Oct 2007 12:18:05 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from edward2 ([24.74.103.61]) by cdptpa-omta03.mail.rr.com with SMTP id <20071030161727.EZIT3242.cdptpa-omta03.mail.rr.com@edward2> for ; Tue, 30 Oct 2007 16:17:27 +0000 Message-ID: <000b01c81b10$62db8740$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Rotary Cross Country Report Date: Tue, 30 Oct 2007 12:17:36 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0008_01C81AEE.DB78E110" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C81AEE.DB78E110 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yee Hah! is right, Dave. Some very nice numbers. Nice to still have = that power available at the higher altitudes with that turbocharger. My = 15.5 MSL days are behind me, once I get to about 12000, the old body = wants its own turbocharger {:>). By the way, sorry I did not make it down to meet you.Wanted to hear your = session on turbocharging. I also had another backboard which = increases the EFISM display intensity which I was going to bring with = me. Since it plugs into the back of the front panel, you would probably = have no problem just unplugging the current back board and plugging in = the brighter one OR you can ship it back and I can do it. Next time Ed ----- Original Message -----=20 From: David Leonard=20 To: Rotary motors in aircraft=20 Sent: Tuesday, October 30, 2007 11:04 AM Subject: [FlyRotary] Rotary Cross Country Report I just finished a most excellent cross country in my Rotary RV-6 and = wanted to share the stats and the adventure. I visited family in = Boulder, CO, friends in Pensacola, and spent a week in Orlando including = watching the shuttle launch and going to the rotary round up in Bell, = Fl. I also delivered a prop to its buyer in Austin TX and traversed the = country westbound in a single day.=20 Best leg (Strong tailwinds fading in the end): K88-82J, 601 NM and = 2.9 hrs on the hobbs. 23.6 gallons of MOGAS burned that I bought at K88 = for $2.74/gal. That works out to 207 Knots Ground speed at 8.1 gal/hr. = Yee ha!=20 Of course, the winds play the deciding factor. I had a mix of winds = over the course of the trip here are the overall stats: 4224 kn miles traveled 240 gallons burned $3.35 average fuel price (I had to buy 100LL on 2 occasions which = brought up the average a little)=20 $24 worth of 2-stroke oil burned. ($830 total paid for fuel and oil) 26.0 hrs on the hobbs That works out to: Average speed=3D 162 KTS Average Fuel Burn=3D 9.2 gal/hr Average cost/mile=3D $0.19 Those are GPS point to point numbers and include climb, taxi and = heading variations. The other way to look at fuel burn/Cruise speed is = to use a calibrated ASI and Fuel Flow insturment. I spent a couple = hundred miles testing various settings after getting the fuel flow = computer fully calibrated. Here are my data points taken in cruise, all = were done > 100 LOP (more power available with richer mixtures or = closure of the wastegate - not attempted this trip). Slight climbs or = descents and changes in mixture probably account for the variations. = (RV is hard to truly keep level especially when looking at other numbers = and trying to write) (Redline is 7000 RPM)=20 150 KTAS @ 13.5k and 8.0 gal/hr 154 KTAS @ 15.5k and 8.3 gal/hr (5100 RPM) 160 KTAS @ 11.5k and 9.1 gal/hr 161 KTAS @ 15.5k and 8.7 gal/hr 162 KTAS @ 13.5k and 9.2 gal/hr 165 KTAS @ 13.5k and 10 gal/hr (5600 RPM)=20 172 KTAS @ 15.5k and 10.7 gal/hr (5600 RPM) 179 KTAS @ 15.5k and 12.0 gal/hr (5900 RPM) 181 KTAS @ 15.5k and 11.8 gal/hr 183 KTAS @ 13.5k and 12.3 gal/hr 185 KTAS @ 17.5k and 13.5 gal/hr (6000 RPM) - WOT=20 189 KTAS @ 17.5k and 13.4 gal/hr (6000 RPM) - WOT 193 KTAS @ 13.5k and 13.6 gal/hr (6100 RPM) - WOT Clearly not the same fuel economy as most lycoming installations, but = not out of the ballpark either. After considering the lower price of = MOGAS the hourly cost of flying is=20 No issues encountered with the engine. Tracy noted that my gear leash = seemed to be slightly larger than normal, and it increased during the = trip home. So next weekend the drive is coming off for inspection and = likely replacement of the snubbers.=20 --=20 David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net ------=_NextPart_000_0008_01C81AEE.DB78E110 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yee Hah! is right, Dave.  Some very nice=20 numbers.  Nice to still have that power available at the higher = altitudes=20 with that turbocharger.  My 15.5 MSL days are behind me, once I get = to=20 about 12000, the old body wants its own turbocharger = {:>).
 
By the way, sorry I did not make it down to meet = you.Wanted to hear your session on turbocharging.    I also = had=20 another backboard which increases the EFISM display intensity which I = was going=20 to bring with me.  Since it plugs into the back of the front panel, = you=20 would probably have no problem just unplugging the current back board = and=20 plugging in the brighter one OR you can ship it back and I can do=20 it.
 
Next time
 
Ed
----- Original Message -----
From:=20 David=20 Leonard
Sent: Tuesday, October 30, 2007 = 11:04=20 AM
Subject: [FlyRotary] Rotary = Cross Country=20 Report

I just finished a most excellent cross country in my = Rotary=20 RV-6 and wanted to share the stats and the adventure.  I visited = family=20 in Boulder, CO, friends in Pensacola, and spent a week in Orlando = including=20 watching the shuttle launch and going to the rotary round up in Bell,=20 Fl.  I also delivered a prop to its buyer in Austin TX and = traversed the=20 country westbound in a single day.

Best leg (Strong tailwinds = fading=20 in the end):  K88-82J,  601 NM and 2.9 hrs on the = hobbs.  23.6=20 gallons of MOGAS burned that I bought at K88 for $2.74/gal.  That = works=20 out to 207 Knots Ground speed at 8.1 gal/hr.  Yee ha!

Of = course,=20 the winds play the deciding factor.  I had a mix of winds over = the course=20 of the trip here are the overall stats:
4224 kn miles = traveled
240=20 gallons burned
$3.35 average fuel price (I had to buy 100LL on 2 = occasions=20 which brought up the average a little)
$24 worth of 2-stroke oil = burned.=20 ($830 total paid for fuel and oil)
26.0 hrs on the hobbs
That = works out=20 to:
Average speed=3D 162 KTS
Average Fuel Burn=3D 9.2 = gal/hr
Average=20 cost/mile=3D $0.19

Those are GPS point to point  numbers = and include=20 climb, taxi and heading variations.  The other way to look at = fuel=20 burn/Cruise speed is to use a calibrated ASI and Fuel Flow = insturment.  I=20 spent a couple hundred miles testing various settings after getting = the fuel=20 flow computer fully calibrated.  Here are my data points taken in = cruise,=20 all were done > 100 LOP (more power available with richer mixtures = or=20 closure of the wastegate - not attempted this trip).  Slight = climbs or=20 descents and changes in mixture probably account for the = variations.  (RV=20 is hard to truly keep level especially when looking at other numbers = and=20 trying to write) (Redline is 7000 RPM)

150 KTAS @ 13.5k and = 8.0=20 gal/hr
154 KTAS @ 15.5k and 8.3 gal/hr (5100 RPM)
160 KTAS @ = 11.5k and=20 9.1 gal/hr
161 KTAS @ 15.5k and 8.7 gal/hr
162 KTAS @ 13.5k and = 9.2=20 gal/hr
165 KTAS @ 13.5k and 10 gal/hr (5600 RPM)
172 KTAS @ = 15.5k and=20 10.7 gal/hr (5600 RPM)
179 KTAS @ 15.5k and 12.0 gal/hr (5900 = RPM)
181=20 KTAS @ 15.5k and 11.8 gal/hr
183 KTAS @ 13.5k and 12.3 = gal/hr
185 KTAS @=20 17.5k and 13.5 gal/hr (6000 RPM)  - WOT
189 KTAS @ 17.5k and = 13.4=20 gal/hr (6000 RPM)  - WOT
193 KTAS @ 13.5k and 13.6 gal/hr = (6100=20 RPM)  - WOT

Clearly not the same fuel economy as most = lycoming=20 installations, but not out of the ballpark either.  After = considering the=20 lower price of MOGAS the hourly cost of flying is

No issues=20 encountered with the engine.  Tracy noted that my gear leash = seemed to be=20 slightly larger than normal, and it increased during the trip = home.  So=20 next weekend the drive is coming off for inspection and likely = replacement of=20 the snubbers.


--
David Leonard

Turbo Rotary = RV-6=20 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net=20 ------=_NextPart_000_0008_01C81AEE.DB78E110--