---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Mon 04/12/10: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:31 PM - Re: Plane Power alternator (WILLIAM KELLY) ________________________________ Message 1 _____________________________________ Time: 12:31:36 PM PST US From: "WILLIAM KELLY" Subject: Re: TeamGrumman-List: Plane Power alternator Gary, Don't know if you were able to see my post today on the GG responding to Les Staples minimizing the PP alternator noise issue. They appear to be in denial about this. The noise really bothers Allisen when she flys with me. One reason, beyond my own personal preferences, that I try to keep the plane so nice is so that Allisen has confidence in the machinery and is comfortable on our trips. It irks me when something like this noise deal intrudes on that objective. My GG post stated that there is no way you could have a problem with an alernator installation unless the unit istelf had issues. Incidentally, we still want to fly up to Auburn. The weather just hasn't settled down yet from winter leftovers. Bill Remember a few months ago when I asked what other's experience was with PP alternators? At the time, I had installed a new PP alternator that was very noisy. A couple of other PP owners also wrote to say theirs was noisy also. My customer sent his alternator to PP to have them check it. It came back saying it was in specs. It was still very noisy. He installed an overhauled Kelly alternator that was quiet. PP needs to tighten up their specs. Sent from my iPhone On Apr 8, 2010, at 12:59 PM, teamgrumman@aol.com wrote: We're 'negotiating' right now. He has done a lot of modified alternators and thinks he can by-pass any testing based on his data and the previous flight test data. Keep your fingers crossed. -----Original Message----- From: flyv35b To: teamgrumman-list@matronics.com Sent: Wed, Apr 7, 2010 6:29 am Subject: Re: TeamGrumman-List: AG5B and the Jaguar cowling Gary, I didn't realize that was the case with your baffling. That sounds like a welcome improvement for accessibility to the alternator. I realize that logic does not play an important role in their decision making many times but it sounds like it is your DER that is making the decision as to whether another cooling test should be run or not. Doesn't he have the authority to make such a decision based on the facts and info available? Cliff ----- Original Message ----- From: teamgrumman@aol.com To: teamgrumman-list@matronics.com Sent: Tuesday, April 06, 2010 9:42 PM Subject: Re: TeamGrumman-List: AG5B and the Jaguar cowling The alternator on a Jaguar is open like it was on a Traveler. I have holes in the cabin heat duct that vent directly on the alternator. During tests, the alternator was a little warmer, but not by enough to make a difference. Cliff, it's the FAA. Logic does not come into the picture. -----Original Message----- From: flyv35b To: teamgrumman-list@matronics.com Sent: Tue, Apr 6, 2010 2:24 pm Subject: Re: TeamGrumman-List: AG5B and the Jaguar cowling What makes them think it would run hotter just because it's 24 volts? Also, It's on the cold side of the baffle and shouldn't see much engine or exhaust heat. No real difference from an AA-5B is there? Cliff ----- Original Message ----- From: teamgrumman@aol.com To: teamgrumman-list@matronics.com Sent: Tuesday, April 06, 2010 10:08 AM Subject: Re: TeamGrumman-List: AG5B and the Jaguar cowling So, I talked to the DER about the AG5B and my cowling. All was going pretty well until he asked what else, besides the air box, was changed in the AG5B. I told him, "They made it 24 volts." So, the FAA may want a climb cooling test to see if the alternator on an AG5B runs hotter than an AA5B. What a pain in the ass. -----Original Message----- From: teamgrumman@AOL.COM To: teamgrumman-list@matronics.com Sent: Mon, Apr 5, 2010 12:41 pm Subject: TeamGrumman-List: AG5B and the Jaguar cowling Here is something I ran into last night. The bottom cowling attach holes on the late model (Tiger LLC) Tigers do not have the same spacing as real Tigers. For some reason, the spacing is changed by 1/8 inch on the outboard holes (the bottom corners and the holes near the strut) and as much as 1/2 inch for the holes between them. What a waste of engineering. Not only that, but, that means the cowlings are not interchangeable with AA5Bs. But, then, with the funky inlet, who'd want to? 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