---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Thu 09/24/09: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:22 AM - Re: Float doesn't (teamgrumman@aol.com) 2. 12:16 PM - Tire wear (teamgrumman@AOL.COM) 3. 12:19 PM - Re: Float doesn't (flyv35b) 4. 07:42 PM - Re: Tire wear (n32romeo@AOL.COM) ________________________________ Message 1 _____________________________________ Time: 11:22:59 AM PST US Subject: Re: TeamGrumman-List: Float doesn't From: teamgrumman@aol.com Floats in carburetors have been around for over 100 years. ?It amazes me how carbs in cars have managed to avoid recalls every couple of years to fix a problem with floats. ?Why not have Holley, Edelbrock, Carter or General Motors build the floats? ? It's not like GM doesn't need the work. ? -----Original Message----- From: flyv35b Sent: Sun, Sep 20, 2009 2:36 pm Subject: Re: TeamGrumman-List: Float doesn't Gary, after our phone conversation Friday about this, it doesn't surprise me.? The float was sinking, raising the fuel level and making it run very rich.? Probably could have diagnosed it by leaning the mixture manually until it smoothed out and that would have told you it was to rich (20/20 hindsight, right?). ? Cliff ----- Original Message ----- From: teamgrumman@aol.com Sent: Sunday, September 20, 2009 9:58 AM Subject: TeamGrumman-List: Float doesn't I had a customer called several weeks ago saying his engine felt 'weird' on a landing, kind of like it wanted to stall. ?As he rolled out onto the taxiway, the engine felt normal. ?We made an appointment to check it out, and left it at that. ?The next few flights were about the same. ?He didn't worry much about the engine. ? A couple of weeks ago (oh, he never did come down to have it checked out) he called saying it was worse. ? Note: ?He has a Cheetah. ?Several years ago I had a customer with the same symptoms with his Cheetah and it was the mixture needle working it's way out. ? I had him check the mixture screw and turn it in a 1/4 turn and said to bring it in. ?He planned to bring it in but never did. ?The engine 'felt' better. ? Last week, he called saying it was getting a lot worse. ?He said it barely ran at idle. ?He finally brought it in last Friday. ? I looked for all of the basic stuff, leaks at the intake tubes, mixture screw, looked for leaks on the carb . . . . nothing. ?We removed the cowling and airbox. ?Several years ago, the accelerator nozzle in the carb on my Cheetah had fallen out and was lying in the bottom of the airbox. ?I expected to find something like that. ?Nothing. ?Venturi was tight,?accelerator nozzle was tight . . . ?nothing. ?I removed the carb. I expected to find debris in the bottom of the carb. ?Nothing. ?Then I noticed one of the semi-transparent floats was full, I mean full, of fuel. ?These are the white floats. ?They should have been changed. ?Except that, the carb had been overhauled in 2005. ?All new parts. ? Carb goes to Ken, at Lycon, in the morning. We are a community of 6 million users fighting spam. SPAMfersion does not have this message. ________________________________ Message 2 _____________________________________ Time: 12:16:23 PM PST US Subject: TeamGrumman-List: Tire wear From: teamgrumman@AOL.COM Other than the plane I worked on with a gear leg that had been splintered during a really hard landing, I haven't seen a big problem with tire wear. ?I've got a customer with a very low time Cheetah, previously owned by a flight instructor (his personal plane), with a left tire that is wearing. ? On my Citabria, there were angled shims. ?I'm assuming the Grummans have the same setup. ?I haven't dug into it yet. ? Any ideas? ________________________________ Message 3 _____________________________________ Time: 12:19:05 PM PST US From: "flyv35b" Subject: Re: TeamGrumman-List: Float doesn't Oh, come on Gary, you are being way to practical!! Cliff ----- Original Message ----- From: teamgrumman@aol.com To: teamgrumman-list@matronics.com Sent: Thursday, September 24, 2009 11:09 AM Subject: Re: TeamGrumman-List: Float doesn't Floats in carburetors have been around for over 100 years. It amazes me how carbs in cars have managed to avoid recalls every couple of years to fi x a problem with floats. Why not have Holley, Edelbrock, Carter or General Motors build the floats=3F It's not like GM doesn't need the work. -----Original Message----- From: flyv35b To: teamgrumman-list@matronics.com Sent: Sun, Sep 20, 2009 2:36 pm Subject: Re: TeamGrumman-List: Float doesn't Gary, after our phone conversation Friday about this, it doesn't surprise me. The float was sinking, raising the fuel level and making it run very rich. Probably could have diagnosed it by leaning the mixture manually unt il it smoothed out and that would have told you it was to rich (20/20 hinds ight, right=3F). Cliff ----- Original Message ----- From: teamgrumman@aol.com To: teamgrumman-list@matronics.com Sent: Sunday, September 20, 2009 9:58 AM Subject: TeamGrumman-List: Float doesn't I had a customer called several weeks ago saying his engine felt 'weird ' on a landing, kind of like it wanted to stall. As he rolled out onto the taxiway, the engine felt normal. We made an appointment to check it out, and left it at that. The next few flights were about the same. He didn't worry much about the engine. A couple of weeks ago (oh, he never did come down to have it checked ou t) he called saying it was worse. Note: He has a Cheetah. Several years ago I had a customer with the s ame symptoms with his Cheetah and it was the mixture needle working it's wa y out. I had him check the mixture screw and turn it in a 1/4 turn and said to bring it in. He planned to bring it in but never did. The engine 'felt' better. Last week, he called saying it was getting a lot worse. He said it bar ely ran at idle. He finally brought it in last Friday. I looked for all of the basic stuff, leaks at the intake tubes, mixture screw, looked for leaks on the carb . . . . nothing. We removed the cowli ng and airbox. Several years ago, the accelerator nozzle in the carb on my Cheetah had fallen out and was lying in the bottom of the airbox. I expec ted to find something like that. Nothing. Venturi was tight, accelerator nozzle was tight . . . nothing. I removed the carb. I expected to find debris in the bottom of the carb. Nothing. Then I noticed one of the semi-transparent floats was full, I mean full, of fuel. These are the white floats. They should have been changed. Except that, the carb had been overhauled in 2005. All new parts. Carb goes to Ken, at Lycon, in the morning. --------------------------------------------------------------------------- --- We are a community of 6 million users fighting spam. 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The Professional version does not have this message ________________________________ Message 4 _____________________________________ Time: 07:42:14 PM PST US Subject: Re: TeamGrumman-List: Tire wear From: n32romeo@AOL.COM In the AA-1 service manual it lists shims (PN 701068-1 through -3) to change the toe-in / toe-out..... Rich -----Original Message----- From: teamgrumman@AOL.COM Sent: Thu, Sep 24, 2009 11:55 am Subject: TeamGrumman-List: Tire wear Other than the plane I worked on with a gear leg that had been splintered during a really hard landing, I haven't seen a big problem with tire wear. ?I've got a customer with a very low time Cheetah, previously owned by a flight instructor (his personal plane), with a left tire that is wearing. ? On my Citabria, there were angled shims. ?I'm assuming the Grummans have the same setup. ?I haven't dug into it yet. ? Any ideas? ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message teamgrumman-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/TeamGrumman-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/teamgrumman-list Browse Digests http://www.matronics.com/digest/teamgrumman-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.