---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 05/08/15: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:30 AM - Re: Alternator Position (Michael Orth) 2. 11:05 AM - Re: Active VOR antenna () 3. 02:08 PM - Re: Active VOR antenna (Robert L. Nuckolls, III) 4. 02:10 PM - Re: Active VOR antenna (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 10:30:16 AM PST US From: "Michael Orth" Subject: Re: AeroElectric-List: Alternator Position Hi Bob, Just got off the telephone with Neal George from Continental. Neal is a very nice and knowledgeable man who is also very easy to talk to. With regard to how the generator may become "vertical" as opposed to its current horizontal orientation, it is moving to an M-14 from a Continental IO-470-L. In the process, it will also become gear-driven rather than belt-driven. Neal agreed with you that the perpendicular force vector. . .the force applied on the armature perpendicular to the axis of rotation by the drive belt. . .would be lessened with a gear-driven installation. Neal also agreed that the physical orientation of the generator should have no effect on its mechanical life. Thanks to both you and Neal for your help, Michael -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- -----Original Message----- From: Robert L. Nuckolls, III Sent: Thursday, May 7, 2015 11:40 AM Subject: Re: AeroElectric-List: Alternator Position At 13:01 2015-05-07, you wrote: > > >Hi Bob, > >Actually, I must revise my original post. > >I have a generator..not an alternator. >Of course, it is buried by other equipment and I am unable to make out the >nomenclature tag without extensive dismantling. >The Parts Manual is mum on the subject of manufacturer. >The generator is 25 amps and externally regulated. >It is currently mounted on a Continental IO-470-L. Beech Baron. >It is belt-driven. > >Thanks, >Michael Interesting. As Neal has suggested, he may be able to offer advise that's more application specific. But I am curious as to how the installation became 'vertical'. I can't imagine that it would make any difference for bearings. While there are such things as THRUST bearings designed to take rated loads axially oriented to the shaft, a ball bearing still has significant performance for axial loading. A major force on the belt driven generator is belt tension. I would imagine armature weight to be on the order of 1/3 or less the belt force. The force vector on the bearing would move out of the bottom of the races . . . but they're hard there too. The weakest mechanical link in a generator is brush-wear. I suspect you'll be replacing brushes at much shorter intervals than for any other reason. Once you have the machine off the airplane for attention, you might as well replace bearings at the same time . . . they're probably cheaper than the brushes! But give Neal a buzz and let us know what you discover. Bob . . . ----- No virus found in this message. Checked by AVG - www.avg.com ________________________________ Message 2 _____________________________________ Time: 11:05:30 AM PST US From: Subject: Re: AeroElectric-List: Active VOR antenna About a 24-30" run between antenna location and Garmin GTN-650 radio. I would plan a short pigtail ~4" off the end of the antenna with a female BNC connector. Similar with the power wire. To allow the canard to be removed for maintenance and inspection, connectors local to the antenna installation area are required. Thanks, -James -----Original Message----- From: Robert L. Nuckolls, III Sent: Thursday, May 07, 2015 6:37 PM Subject: Re: AeroElectric-List: Active VOR antenna At 15:43 2015-04-24, you wrote: >Bob, > >Have you been able to assess the active VOR antenna? Were about 30 >days from first flight and really need a retrofit VOR antenna solution for >this bird as we discussed. What is the length of cable from the end of the antenna to your receiver? ________________________________ Message 3 _____________________________________ Time: 02:08:53 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Active VOR antenna At 15:43 2015-04-24, you wrote: >Bob, > >Have you been able to assess the active VOR >antenna? Were about 30 days from first >flight and really need a retrofit VOR antenna >solution for this bird as we discussed. > >Thanks, >James What is the coax cable length from cable end of antenna to your receiver. Is the receiver connector BNC? Bob . . . ________________________________ Message 4 _____________________________________ Time: 02:10:27 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Active VOR antenna At 13:03 2015-05-08, you wrote: > >About a 24-30" run between antenna location and Garmin GTN-650 radio. > >I would plan a short pigtail ~4" off the end of the antenna with a >female BNC connector. Similar with the power wire. To allow the >canard to be removed for maintenance and inspection, connectors >local to the antenna installation area are required. > >Thanks, >-James Oops . . . missed this. Will do. Bob . . . ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-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/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-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.