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 5.2.14) with ESMTP id 3755829 for flyrotary@lancaironline.net; Mon, 13 Jul 2009 13:31:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta01.mail.rr.com with ESMTP id <20090713173029256.EERJ21440@cdptpa-omta01.mail.rr.com> for ; Mon, 13 Jul 2009 17:30:29 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Oly's report on accident Date: Mon, 13 Jul 2009 13:30:33 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01CA03BE.195AA180" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcoD27kAEMfpNbhsRe2mewihCDey/gAA0Vqw In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Message-Id: <20090713173029256.EERJ21440@cdptpa-omta01.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_000C_01CA03BE.195AA180 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Ah! Bowl upside down to do the check - so float is at top of its range meaning fuel is cut off. I understand - thanks, sorry for the ignorance 'bout carburetors. I personally think reference to the fuel level rather than the float is less confusing - but all in what you standardize on {:>). Yes, I can imagine the bitching - everyone hates it when a accepted standard is changed. Whether its for the better or not {:>) Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of wrjjrs@aol.com Sent: Monday, July 13, 2009 1:01 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Oly's report on accident Ok Ed, Let's do a quick carb-speak check. FLOAT level typically is checked with the carb upside down and the bowl removed. The number is the measured distance from the gasket surface to the highest point on the float unless depicted otherwise in the manual. Remember the FLOAT level is measured with the carb inverted, and the thing to remember is that the higher the FLOAT level the lower the FUEL level. The confusion with the reversed levels is the reason that all the motorcycle manufacturers went to FUEL level only in their specifications. The motorcycle guys gave you a tube which was a simple graduated cylinder, a hose, and a tap screw to put in the bottom of the float bowl. You were supposed to only measure the fuel level. In fact if you look at later model carburetors you will see that the flange that contains the float bowl is cut away in the center so you can see the gasket mating surface. The purpose of the cutaway was to allow you to see the gasket seal surface to measure the fuel level, which used the same reference surface. If you look in the service manual (Kawasaki at least) of a bike with carbs printed in the last 15 years you will see only a fuel level listed. Boy did that cause the mechanics to bitch when they first made the change! When speaking only of the fuel level the understanding is easy. Fuel level high, carb runs rich. Fuel level low, carb runs lean. Sorry for the long explaination for the very simple concept. Bill Jepson -----Original Message----- From: Ed Anderson To: Rotary motors in aircraft Sent: Mon, Jul 13, 2009 9:30 am Subject: [FlyRotary] Re: Oly's report on accident Ok, Bill - you lost me. Must admit my carburetor knowledge is a bit on the skimpy side. However, in the carburetors I recall - when the float level was high in the bow that meant there was lots of fuel in the bowl, when the float level was low in the bowl the fuel was also. Am I confused or did you "misspeak" {:>)? Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [ mailto:flyrotary@lancaironline.net] On Behalf Of wrjjrs@aol.com Sent: Monday, July 13, 2009 11:56 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Oly's report on accident Finn, Running Carburetors if the float level is too high, and therefore the fuel level too low, it can prevent the vacuum from raising the fuel enough to keep the engine running. This is less common than the FUEL level being too HIGH which will cause the engine to go rich when the throttle is closed. I see the rich condition far more often. Bill Jepson -----Original Message----- From: Finn Lassen < finn.lassen@verizon.net> To: Rotary motors in air craft < flyrotary@lancaironline.net> Sent: Sat, Jul 11, 2009 4:24 pm Subject: [FlyRotary] Re: Oly's report on accident Too high? Now that's a new one. Please explain. Finn Al Gietzen wrote: > I sometimes would have the engine quit > after pulling back on the power while crossing midfield coming in a full > speed from the beach to land at Clearwater airpark > ------------------------- > Did you ever check the carburetor float levels? Engine dying after pulling > the power is a symptom of too high a float level. > > Just a thought, > > Al > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html > ------------------------------------------------------------------------ > > > Internal Virus Database is out of date. > Checked by AVG - http://www.avg.com > Version: 8.0.169 / Virus Database: 270.13.2/2214 - Release Date: 7/2/2009 5:54 AM < br> > > -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html _____ A Good Credit Score is 700 or Above. See yours in just 2 easy steps! _____ A Good Credit Score is 700 or Above. See yours in just 2 easy steps! ------=_NextPart_000_000C_01CA03BE.195AA180 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Ah! Bowl upside down to do the = check – so float is at top of its range meaning fuel is cut off.    I = understand – thanks, sorry for the ignorance ‘bout carburetors.  I personally think = reference to the fuel level rather than the float is less confusing – but all in what = you standardize on {:>).  Yes, I can imagine the bitching – everyone hates = it when a accepted standard is changed.  Whether its for the better or not = {:>)

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of wrjjrs@aol.com
Sent: Monday, July 13, = 2009 1:01 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Oly's report on accident

 

Ok Ed,
Let's do a quick carb-speak check. FLOAT level typically is checked with = the carb upside down and the bowl removed. The number is the measured = distance from the gasket surface to the highest point on the float unless depicted = otherwise in the manual. Remember the FLOAT level is measured with the carb = inverted, and the thing to remember is that the higher the FLOAT level the = lower the FUEL level. The confusion with the reversed levels is the reason that = all the motorcycle manufacturers went to FUEL level only in their = specifications. The motorcycle guys gave you a tube which was a simple graduated cylinder, a = hose, and a tap screw to put in the bottom of the float bowl. You were = supposed to only measure the fuel level. In fact if you look at later model = carburetors you will see that the flange that contains the float bowl is cut away in the = center so you can see the gasket mating surface. The purpose of the cutaway was = to allow you to see the gasket seal surface to measure the fuel level, = which used the same reference surface. If you look in the service manual (Kawasaki at least) of a bike with carbs printed in the last 15 years you will see = only a fuel level listed. Boy did that cause the mechanics to bitch when they = first made the change! When speaking only of the fuel level the understanding = is easy. Fuel level high, carb runs rich. Fuel level low, carb runs = lean.
Sorry for the long explaination for the very simple concept.
Bill Jepson


-----Original Message-----
From: Ed Anderson <eanderson@carolina.rr.com>
To: Rotary motors in = aircraft <flyrotary@lancaironline.net>
Sent: Mon, Jul 13, 2009 9:30 am
Subject: [FlyRotary] Re: Oly's report on = accident

Ok, Bill – you lost me.  = Must admit my carburetor knowledge is a bit on the skimpy = side.

 

However, in the carburetors I = recall – when the float level was high in the bow that meant there was lots of = fuel in the bowl, when the float level was low in the bowl the fuel was = also.  Am I confused or did you “misspeak” = {:>)?

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net= ] On Behalf Of wrjjrs@aol.com
Sent: Monday, July 13, = 2009 11:56 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Oly's report on accident

 

Finn,
Running Carburetors if the float level is too high, and therefore the = fuel level too low, it can prevent the vacuum from raising the fuel enough to = keep the engine running. This is less common than the FUEL level being too = HIGH which will cause the engine to go rich when the throttle is closed. I = see the rich condition far more often.
Bill Jepson


-----Original Message-----
From: Finn Lassen <finn.lassen@verizon.net> To: Rotary motors in air craft <flyrotary@lancaironline.net>= ;
Sent: Sat, Jul 11, 2009 4:24 pm
Subject: [FlyRotary] Re: Oly's report on = accident

Too high? Now that's a new one. Please explain. 
 
Finn 
 
Al Gietzen wrote: 
> I sometimes would have the engine quit > after pulling back on = the power while crossing midfield coming in a full > speed from the beach = to land at Clearwater airpark 
> ------------------------- 
> Did you ever check the carburetor float levels? Engine dying after pulling 
> the power is a symptom of too high a float level. 
> 
> Just a thought, 
> 
> Al 
> 
> 
> -- 
> Homepage: http://www.flyrotary.com/ = ;
> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/Lis= t.html 
> ------------------------------------------------------------------------&= nbsp;
> 
> 
> Internal Virus Database is out of date. 
> Checked by AVG - http://www.avg.com > Version: 8.0.169 / Virus Database: 270.13.2/2214 - Release Date: = 7/2/2009 5:54 AM < br> > 
>  
-- 
Homepage: http://www.flyrotary.com/ = ;
Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/Lis= t.html 

 

=

A Good Credit Score is 700 or Above. See = yours in just 2 easy steps!

 

=

A Good Credit Score is 700 or Above. See yours in just 2 easy = steps!

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