---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Fri 09/18/09: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:47 AM - Flutter (roger lambert) 2. 01:25 PM - Re: Flutter (Gig Giacona) 3. 01:42 PM - Re: Re: Flutter (Jim Belcher) 4. 02:12 PM - Re: Re: Flutter (Paul Mulwitz) 5. 05:12 PM - making large holes in UHMWPE (Carlos Sa) 6. 05:21 PM - Re: making large holes in UHMWPE (Jeyoung65@aol.com) 7. 05:32 PM - Re: making large holes in UHMWPE (Carlos Sa) 8. 05:43 PM - Re: making large holes in UHMWPE (Paul Mulwitz) 9. 05:50 PM - Re: making large holes in UHMWPE (Ashley) 10. 05:52 PM - Re: making large holes in UHMWPE (LarryMcFarland) 11. 06:21 PM - Re: Removing those &()^^)^%$ paper part number stickers (Gary Ray) ________________________________ Message 1 _____________________________________ Time: 08:47:54 AM PST US Subject: Zenith-List: Flutter From: roger lambert The following was just posted by E-hotline on behalf of the EAA: On August 21, Roca requested that the San Antonio Flight Standards District Office (FSDO) assign a DAR to inspect his aircraft, which he and his son built. Later that day a DAR contacted Roca informing him that the inspectio n would not happen until the Manufacturing Inspection District Office (MIDO) had cleared it with the FAA in Oklahoma City. Alex called the MIDO and was told they were still waiting to hear from Washington. In reality, there was no need to obtain permission for the airworthiness inspection. The confusion stemmed from the NTSB=92s well-publicized request in April 2009 that the FAA ground all Zodiac 601XL aircraft, and not conduct any further airworthiness inspections the type because of recent fatal accidents involving the type. (NTSB suspected =93aerodynamic flutter=94 as the cause of all the accidents, which resulted in 10 fatalities. That theory wa s later proved false .) ________________________________ Message 2 _____________________________________ Time: 01:25:25 PM PST US Subject: Zenith-List: Re: Flutter From: "Gig Giacona" Our friend Dr. Ed had the same problem with the Baton Rouge FSDO. EAA worked it out for him in no time flat. -------- W.R. "Gig" Giacona 601XL Under Construction See my progress at www.peoamerica.net/N601WR Read this topic online here: http://forums.matronics.com/viewtopic.php?p=263727#263727 ________________________________ Message 3 _____________________________________ Time: 01:42:03 PM PST US From: Jim Belcher Subject: Re: Zenith-List: Re: Flutter On Friday 18 September 2009 15:24, Gig Giacona wrote: > > Our friend Dr. Ed had the same problem with the Baton Rouge FSDO. EAA > worked it out for him in no time flat. One wonders how long it will take the FAA to understand that this is not a type certificated aircraft, and that legally, a 601XL does not correspond to a single type. It's either an LSA, a box of parts someone has assembled, or a bunch of sheet metal and steel to be formed, welded, and assembled. Maybe we should ground all RVs, because they are made out of the same raw stuff. :-) -- ============================================ Do not archive. ============================================ Jim B Belcher BS, MS Physics, Math, Computer Science A&P/IA Retired aerospace technical manager Happiness is a belt-fed weapon ============================================ ________________________________ Message 4 _____________________________________ Time: 02:12:01 PM PST US From: Paul Mulwitz Subject: Re: Zenith-List: Re: Flutter Hi Jim, I believe the FAA does indeed understand the differences between S-LSA and various experimental versions of the Zodiac-XL. My conversations with a bunch of FAA managers at Sun n Fun led me to understand they feel concern over factory built planes, even S-LSAs, sold to the public. They really don't spend much effort worrying about experimental planes. Paul XL awaiting engineering changes At 01:31 PM 9/18/2009, you wrote: >One wonders how long it will take the FAA to understand that this is not a >type certificated aircraft, and that legally, a 601XL does not correspond to >a single type. It's either an LSA, a box of parts someone has assembled, or a >bunch of sheet metal and steel to be formed, welded, and assembled. ________________________________ Message 5 _____________________________________ Time: 05:12:07 PM PST US Subject: Zenith-List: making large holes in UHMWPE From: Carlos Sa I am trying to figure how to make a 1.125" hole in a piece of UHMWPE. I want it to be snug, as it will be the rear bearing for the torque tube 6V13-3. In aluminum, I drill small holes around the perimeter, remove the centre piece and file until I have the proper dimension. However, UHMWPE is hard to sand or file. There must be a better way. A 1.125" whole saw will probably result in an oversize hole, and a with 1" one I still have the problem of enlarging the hole... Any ideas? Thanks in advance for your comments... Carlos CH601-HD, plans working on centre wing ________________________________ Message 6 _____________________________________ Time: 05:21:49 PM PST US From: Jeyoung65@aol.com Subject: Re: Zenith-List: making large holes in UHMWPE Try a circular hole cutter (Spruce P/N 12-10600). You can adjust the hole size. Jerry of GA DO NOT ARCHIVE In a message dated 9/18/2009 7:12:43 P.M. Eastern Standard Time, carlossa52@gmail.com writes: I am trying to figure how to make a 1.125" hole in a piece of UHMWPE. I want it to be snug, as it will be the rear bearing for the torque tube 6V13-3. In aluminum, I drill small holes around the perimeter, remove the centre piece and file until I have the proper dimension. However, UHMWPE is hard to sand or file. There must be a better way. A 1.125" whole saw will probably result in an oversize hole, and a with 1" one I still have the problem of enlarging the hole... Any ideas? Thanks in advance for your comments... Carlos CH601-HD, plans working on centre wing (http://www.matronics.com/Navigator?Zenith-List) (http://www.matronics.com/contribution) ________________________________ Message 7 _____________________________________ Time: 05:32:46 PM PST US Subject: Re: Zenith-List: making large holes in UHMWPE From: Carlos Sa I have a hole cutter, but the smallest diameter it will cut is 1.75" AS&S is certainly a good idea, and not expensive! Thanks, Jerry! Carlos 2009/9/18 > Try a circular hole cutter (Spruce P/N 12-10600). You can adjust the hole > size. Jerry of GA DO NOT ARCHIVE > > ________________________________ Message 8 _____________________________________ Time: 05:43:57 PM PST US From: Paul Mulwitz Subject: Re: Zenith-List: making large holes in UHMWPE Hi Carlos, I would probably start a hole in the middle or near the edge of the marked outline of my finished hole. Then I would use a bench mounted scroll saw to cut close to the outline. For a final finish on the hole I would probably use a rotating sanding drum mounted in a Dremel, hand drill, or drill press. Paul XL awaiting engineering changes At 05:11 PM 9/18/2009, you wrote: >I am trying to figure how to make a 1.125" hole in a piece of UHMWPE. >I want it to be snug, as it will be the rear bearing for the torque >tube 6V13-3. > >In aluminum, I drill small holes around the perimeter, remove the >centre piece and file until I have the proper dimension. >However, UHMWPE is hard to sand or file. There must be a better way. >A 1.125" whole saw will probably result in an oversize hole, and a >with 1" one I still have the problem of enlarging the hole... > >Any ideas? > > >Thanks in advance for your comments... > >Carlos >CH601-HD, plans >working on centre wing > ________________________________ Message 9 _____________________________________ Time: 05:50:36 PM PST US From: "Ashley" Subject: Re: Zenith-List: making large holes in UHMWPE How about a Harbor Freight Unibit? Floyd Wilkes ----- Original Message ----- From: Carlos Sa To: zenith-list@matronics.com Sent: Friday, September 18, 2009 7:11 PM Subject: Zenith-List: making large holes in UHMWPE I am trying to figure how to make a 1.125" hole in a piece of UHMWPE. I want it to be snug, as it will be the rear bearing for the torque tube 6V13-3. In aluminum, I drill small holes around the perimeter, remove the centre piece and file until I have the proper dimension. However, UHMWPE is hard to sand or file. There must be a better way. A 1.125" whole saw will probably result in an oversize hole, and a with 1" one I still have the problem of enlarging the hole... Any ideas? Thanks in advance for your comments... Carlos CH601-HD, plans working on centre wing ________________________________ Message 10 ____________________________________ Time: 05:52:06 PM PST US From: LarryMcFarland Subject: Re: Zenith-List: making large holes in UHMWPE Carlos, I cut the stuff on a lathe and get rather precise holes. Any lathe would do and save you considerable time. Otherwise, a fly-cutter will do the same accuracy as well. Just cut a sample hole first. Larry McFarland 601HDS at www.macsmachine.com Carlos Sa wrote: > I am trying to figure how to make a 1.125" hole in a piece of UHMWPE. > I want it to be snug, as it will be the rear bearing for the torque > tube 6V13-3. > > In aluminum, I drill small holes around the perimeter, remove the > centre piece and file until I have the proper dimension. > However, UHMWPE is hard to sand or file. There must be a better way. > A 1.125" whole saw will probably result in an oversize hole, and a > with 1" one I still have the problem of enlarging the hole... > > Any ideas? > > > Thanks in advance for your comments... > > Carlos > CH601-HD, plans > working on centre wing ________________________________ Message 11 ____________________________________ Time: 06:21:25 PM PST US From: "Gary Ray" Subject: Re: Zenith-List: Removing those &()^^)^%$ paper part number stickers Jim I used carb cleaner. Works very well and comes in a convenient spray can for a couple dollars at Wallmart and is the best price I found. Gary Ray davgray@sbcglobal.net ----- Original Message ----- From: "Jim Belcher" Sent: Wednesday, September 16, 2009 12:32 PM Subject: Zenith-List: Removing those &()^^)^%$ paper part number stickers > > I may be the only person who finds those little paper part number stickers on > Zenith parts particularly annoying. Sure, I want to know what the part number > is, but these little beasts attract dirt and grease, and don't like to come > off cleanly. > > In case I'm not the only person, I have posted the method I'm using to remove > the paper stickers: > > http://www.anemicaardvark.com/Z601XL/ > > This method removes them with relative ease, and even gets rid of the residue > left by the adhesive. > -- > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith-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/zenith-list Browse Digests http://www.matronics.com/digest/zenith-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.