X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.54.250.89] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1124690 for flyrotary@lancaironline.net; Tue, 23 May 2006 09:28:27 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.54.250.89; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 23 May 2006 06:27:40 -0700 Message-ID: Received: from 4.171.147.128 by BAY115-DAV17.phx.gbl with DAV; Tue, 23 May 2006 13:27:37 +0000 X-Originating-IP: [4.171.147.128] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: 100LL plug fouling / MPG Date: Tue, 23 May 2006 09:27:33 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002A_01C67E4B.1EC742A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.20.0026.0800 Seal-Send-Time: Tue, 23 May 2006 09:27:33 -0400 X-OriginalArrivalTime: 23 May 2006 13:27:40.0932 (UTC) FILETIME=[AA892440:01C67E6C] This is a multi-part message in MIME format. ------=_NextPart_000_002A_01C67E4B.1EC742A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yes, my head (and main scale of ASI) is still calibrated in miles per = hour. Yep, if you slowed down and were able to lean the mixture, your canard = should do better MPG than my RV. Tracy ----- Original Message -----=20 From: Perry Mick=20 To: Rotary motors in aircraft=20 Sent: Tuesday, May 23, 2006 12:56 AM Subject: [FlyRotary] Re: 100LL plug fouling / MPG Tracy, just so we are on the same page, I assume you mean 175 MPH (not = knots)? My data was taken between 10,500 and 12,500. It might be interesting = to see what my fuel burn and MPG would be if I slowed it down to 175 = MPH. Tracy wrote: About 30 mpg is what I currently see under best case conditions = (12,500 - 14,500 MSL, 6.0 gph, 175 TAS). Interesting experiment on way back from Lumberton. 4 RVs departed for = Florida Sunday AM, 3 Lyc powered and my rotary. The Lyc guys were = taking too long to get packed up (I get antsy when I'm ready to go) so I = left 15 minutes before they did and told them I would go slow and meet = up on the way since we were flying the same flight plan. The Lyc guys = flew at 8.5 GPH power setting and I flew at 6.0 GPH. Had head winds all = the way but interesting part was that after 2.75 hr and 370 miles after = my takeoff, the Lycs caught up to me. The extra speed of those 2.5 GPH = really does not buy much! And I got to spend more time in my beloved = airplane : )=20 Fun & Relaxing trip & fly-in BTW. =20 Tracy (must get Ed's Gin & tonic formula) From: Perry Mick=20 To: Rotary motors in aircraft=20 Sent: Monday, May 22, 2006 12:33 PM Subject: [FlyRotary] 100LL plug fouling Al Wick might have got some of his "100LL in rotary" comments from = my experience. I can't burn 100LL, it will foul my leading spark plugs after only 4 = hours. That is because my engine runs rich-best power all the time. Of = course running rich results in a higher fuel burn too. These days I'm = doing about 160 knots on 8.8gph, or 184 mph @ 21 mpg.=20 Burning mogas all the time, my leading spark plugs still only last = about 50 to 60 hours. Trailings always look better. My 1988 RX-7 with exactly the same engine gets about 18.5 mpg = combined city/hwy driving, probably low 20s if it was continuous = freeway. If I had lean control I would expect results more like Ed Anderson = with regard to 100LL and plug fouling. I would like to see some fliers express fuel usage in mpg, an easy = way to compare efficiencies. For example, Tracy and Ed leaning might see = 25 to 30 mpg? ------=_NextPart_000_002A_01C67E4B.1EC742A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yes, my head (and main scale of ASI) is still calibrated in miles = per=20 hour.
 
Yep, if you slowed down and were able to lean the mixture, your = canard=20 should do better MPG than my RV.
 
Tracy
----- Original Message -----
From: Perry Mick
To: Rotary motors in = aircraft
Sent: Tuesday, May 23, 2006 = 12:56=20 AM
Subject: [FlyRotary] Re: 100LL = plug=20 fouling / MPG

Tracy, just so we are on the same page, I assume you mean = 175 MPH=20 (not knots)?
My data was taken between 10,500 and 12,500. It might be = interesting to=20 see what my fuel burn and MPG would be if I slowed it down to 175 = MPH.
 

Tracy wrote:
 
About 30 mpg is what I currently see under best case conditions = (12,500 -=20 14,500 MSL, 6.0 gph, 175 TAS).
 
Interesting experiment on way back from Lumberton.  4 RVs = departed=20 for Florida Sunday AM, 3 Lyc powered and my rotary.  The Lyc = guys=20 were taking too long to get packed up (I get antsy when I'm ready to = go) so I=20 left 15 minutes before they did and told them I would go slow and = meet up=20 on the way since we were flying the same flight plan.  The Lyc = guys flew=20 at 8.5 GPH power setting and I flew at 6.0 GPH.  Had head winds = all the=20 way but interesting part was that after 2.75 hr  = and 370=20 miles after my takeoff, the Lycs caught up to me.   The = extra speed=20 of those 2.5 GPH really does not buy much!  And I got to spend = more time=20 in my beloved airplane : ) 
 
Fun & Relaxing trip & fly-in BTW. =20   
 
Tracy  (must get Ed's Gin & tonic formula)
From: Perry Mick =
Sent: Monday, May 22, 2006 12:33 PM
Subject: [FlyRotary] 100LL plug fouling

Al Wick might have got some of his "100LL in rotary" comments = from my=20 experience.
I can't burn 100LL, it will foul my leading spark plugs after = only 4=20 hours. That is because my engine runs rich-best power all the time. = Of=20 course running rich results in a higher fuel burn too. These = days I'm=20 doing about 160 knots on 8.8gph, or 184 mph @ 21 mpg.
Burning mogas all the time, my leading spark plugs still only = last=20 about 50 to 60 hours. Trailings always look better.
 
My 1988 RX-7 with exactly the same engine gets about 18.5 = mpg=20 combined city/hwy driving, probably low 20s if it was continuous=20 freeway.
 
If I had lean control I would expect results more like Ed = Anderson with=20 regard to 100LL and plug fouling.
 
I would like to see some fliers express fuel usage in mpg, = an easy=20 way to compare efficiencies. For example, Tracy and Ed leaning might = see 25=20 to 30 mpg?
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