---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Thu 05/17/07: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:18 AM - Exhaust system (teamgrumman@aol.com) 2. 05:51 AM - Re: Exhaust system (flyv35b) 3. 06:52 AM - Exhaust system (923te) 4. 07:21 AM - Re: Exhaust system (flyv35b) ________________________________ Message 1 _____________________________________ Time: 12:18:05 AM PST US Subject: TeamGrumman-List: Exhaust system From: teamgrumman@aol.com Cliff, I am doing an annual on a Tiger with a Dawley muffler. It too is hitting the cowling. This hits at about the 9 to 10 o'clock position. I wonder if the tooling is messed up. ________________________________________________________________________ from AOL at AOL.com. ________________________________ Message 2 _____________________________________ Time: 05:51:23 AM PST US From: "flyv35b" Subject: Re: TeamGrumman-List: Exhaust system On the Tiger I just installed the rebuilt muffler on the outlet pipe hit the cowling at the aft end and slightly to the inside of the original slot. Essentially the pipe is welded on to the can at to acute or shallow of an angle. Probably 5 degrees off would do it. I talked to Steve at Dawley (the salesman) and he wanted to argue with me about maybe it wasn't the fault of the muffler! But did say that if I sent it back they would build a new one. The customer did not want to wait that long and since he is planning on installing a Power Flow exhaust later on we decided to enlarge the hole in the cowling to fit since it will be patched later on. I had to cut completely through the inside doubler ring and about 1" aft of that to get even a reasonable amount of clearance around the pipe. In total the hole was elongated about 2" further aft and skewed to the inside. I riveted a doubler back on the inside to regain most of the rigidity from cutting out the original doubler ring that is spot welded on. I had the cowling off and on at least 4 times to get the hole the right size without making it any larger than necessary. The now larger hole at the front of the pipe should probably be covered with baffling material or a fairing like Plazak sells, at least to make it look better. Dawley was the manufacturer for Tiger aircraft mufflers on the AG5B and I'm wondering if there is a difference or something was changed for them from what the old AA-5B configuration is. I took some pictures and am planning on writing a letter to Dawley about the situation. And based on this experience I'm not sure I want to buy any more mufflers from Dawley. Cliff A&P/IA ----- Original Message ----- From: Sent: Thursday, May 17, 2007 12:17 AM Subject: TeamGrumman-List: Exhaust system > > Cliff, I am doing an annual on a Tiger with a Dawley muffler. It too is > hitting the cowling. This hits at about the 9 to 10 o'clock position. I > wonder if the tooling is messed up. > ________________________________________________________________________ > from AOL at AOL.com. > > > -- > 269.7.1/805 - Release Date: 5/15/2007 10:47 AM > -- ________________________________ Message 3 _____________________________________ Time: 06:52:37 AM PST US From: "923te" <923te@cox.net> Subject: TeamGrumman-List: Exhaust system Why don't you guys take the time to fill out a Service Difficulty Report? It might help for Dawley to get some pressure from the FAA to improve their QC. Maybe it would help keep other customers from getting a bad fitting muffler. http://forms.faa.gov/forms/faa8070-1.pdf http://forms.faa.gov/forms/faa8010-4.pdf http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/7aab5bad14f9417885256a35006d56b0/057a982793f12d71862569b2005e75e6/$FILE/AC21-9A.pdf ________________________________ Message 4 _____________________________________ Time: 07:21:11 AM PST US From: "flyv35b" Subject: Re: TeamGrumman-List: Exhaust system Not a bad idea. I think I'll do that. Cliff ----- Original Message ----- From: "923te" <923te@cox.net> Sent: Thursday, May 17, 2007 6:51 AM Subject: TeamGrumman-List: Exhaust system > > Why don't you guys take the time to fill out a Service Difficulty Report? > > It might help for Dawley to get some pressure from the FAA to improve > their > QC. Maybe it would help keep other customers from getting a bad fitting > muffler. > > http://forms.faa.gov/forms/faa8070-1.pdf > > http://forms.faa.gov/forms/faa8010-4.pdf > > http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/7aab5bad14f9417885256a35006d56b0/057a982793f12d71862569b2005e75e6/$FILE/AC21-9A.pdf > > > -- > 10:47 AM > > -- ------------------------------------------------------------------------------------- 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.