---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Mon 01/16/06: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:56 AM - Re:Jabiru in 701 (chrisoz@bmail.com.au) 2. 09:01 AM - 801 float kit (Keystone Engineering LLC) 3. 03:46 PM - has anyone dimpled their XL? (Chris sinfield) 4. 04:22 PM - Re: has anyone dimpled their XL? (Larry McFarland) 5. 04:23 PM - Re: has anyone dimpled their XL? (Zodie Rocket) 6. 07:18 PM - Proper Deburring Technique (Dave VanLanen) 7. 07:55 PM - Re: Proper Deburring Technique (Paul Mulwitz) 8. 10:31 PM - plug () 9. 10:39 PM - Re: Proper Deburring Technique (kevinbonds) 10. 11:08 PM - Re: Proper Deburring Technique (kevinbonds) ________________________________ Message 1 _____________________________________ Time: 12:56:11 AM PST US Subject: Zenith-List: Re:Jabiru in 701 From: chrisoz@bmail.com.au --> Zenith-List message posted by: chrisoz@bmail.com.au Hello Doug, I have heard similar things about the 2.2 Jabiru. Short prop not efficient, and also the engine tends to overheat as the 701 is to slow for efficient cooling. The jabiru-plane that the engine was developed for is a fairly nippy little thing and moves much faster. Here in Australia a lot of 701 are buzzing around, but hardly any have the localy produced Jabiru engine in them. Food for thoughts.... Cheers from Downunder, Chris from Perth > > --> Zenith-List message posted by: doug kandle > > Yesterday a couple of people who stopped by to look at my progress on > my 701 asked what engine I was planning. When I told them I planned > to use the Jabiru 2200 they said that they had heard that there was a > potential problem using that engine. With the 3300 RPM engine speed, > the Jabiru required a shorter prop than a Rotax. Their argument is > that with a shorter prop the Jabiru would not work as well as a Rotax > (using a longer prop) because less of the prop extends beyond the > cowling. Note: My calculations are with the Rotax running at 5800 RPM > and a 2.43 gear box the prop is only turning 2380. > > Has anyone else heard this from a reliable source? Has anyone > experienced any issues with the Jabiru on a 701? > ________________________________ Message 2 _____________________________________ Time: 09:01:56 AM PST US From: Keystone Engineering LLC Subject: Zenith-List: 801 float kit --> Zenith-List message posted by: Keystone Engineering LLC Hi I am working on installing Full Lotus Floats on my CH 801. To put it on floats I need to double 8F7-8. The additional piece is made from 0.040 6061T-6 the same dimensions as the original. Or the two can be replaced with one made from 0.063 of 6061T-6. This increases the strength of the fuselage between the lower engine mounts to accept a float attachment points at the lower engine mounts. The rear float mounts are simple to install off the main landing gear. I just wanted to throw this out for anyone that is still working on the fuselage that has thoughts of floats in the future. It is easer to install this part when constructing the plane than after it has a few hours in the air. I am still amazed with the support I am receiving from ZAC. I ask them about attaching floats from one of their competitors and they send me design drawings on how to attach floats to the 801! Thank you Nick! More pictures and observations to come! Bill Wilcox Valdez, Alaska N801BW 227.5 hrs Finished and flying the bigger tail with VGs. Working on attaching the floats (after Feb 1). I need them on by March 1 so I can go caribou hunting on floats used as skis! Life is good! ________________________________ Message 3 _____________________________________ Time: 03:46:31 PM PST US From: Chris sinfield Subject: Zenith-List: has anyone dimpled their XL? --> Zenith-List message posted by: Chris sinfield Hi All Has anyone dimpled their XL kit?? IS it worth it and would you get any extra speed out of it due to the clean flying surfaces.. Eddie Steve has stated to dimple his tail and is about to start the wings.. It looks Good without the raised heads but he said it takes twice as long.. So the Q is ... Is it worth it just for the looks? or is there better performance...?? would it make a difference to the flying? test flight ? I was thinking of doing the wings and tail with dimpled rivets and the fuse normally.. Chris.. --------------------------------- Ring in the New Year with Photo Calendars. Add photos, events, holidays, whatever. ________________________________ Message 4 _____________________________________ Time: 04:22:37 PM PST US From: Larry McFarland Subject: Re: Zenith-List: has anyone dimpled their XL? --> Zenith-List message posted by: Larry McFarland Chris, You might just see another 2 mph airspeed, but I doubt it's worth the work you propose to get it. Larry McFarland do not archive Chris sinfield wrote: >--> Zenith-List message posted by: Chris sinfield > > >Hi All > Has anyone dimpled their XL kit?? IS it worth it and would you get any extra speed out of it due to the clean flying surfaces.. > > > > ________________________________ Message 5 _____________________________________ Time: 04:23:20 PM PST US From: "Zodie Rocket" Subject: RE: Zenith-List: has anyone dimpled their XL? --> Zenith-List message posted by: "Zodie Rocket" The effect of flat riveting over domed heads is 1/4 mph gain on speeds below 200mph. IS the time worth it on an XL ? I doubt it, but if you want to do it for looks then knock yourself out. Mark Townsend Alma, Ontario Zodiac 601XL C-GOXL, CH701 just started www.ch601.org / www.ch701.com / www.Osprey2.com -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Chris sinfield Sent: Monday, January 16, 2006 6:45 PM Subject: Zenith-List: has anyone dimpled their XL? --> Zenith-List message posted by: Chris sinfield Hi All Has anyone dimpled their XL kit?? IS it worth it and would you get any extra speed out of it due to the clean flying surfaces.. Eddie Steve has stated to dimple his tail and is about to start the wings.. It looks Good without the raised heads but he said it takes twice as long.. So the Q is ... Is it worth it just for the looks? or is there better performance...?? would it make a difference to the flying? test flight ? I was thinking of doing the wings and tail with dimpled rivets and the fuse normally.. Chris.. --------------------------------- Ring in the New Year with Photo Calendars. Add photos, events, holidays, whatever. -- 1/14/2006 -- 1/14/2006 ________________________________ Message 6 _____________________________________ Time: 07:18:51 PM PST US From: "Dave VanLanen" Subject: Zenith-List: Proper Deburring Technique --> Zenith-List message posted by: "Dave VanLanen" I have a procedural question regarding deburring. How much is enough in terms of material removed? If I use the file technique with a light touch to avoid scratches, or if I use the drill bit technique with minimal turns to avoid countersinking, it will take off the noticeable burrs. However, if I run my fingernail towards the hole, there is still a slight "ridge" right at the edge of the hole. Do I need to get all of this material off, so that there is absolutely no "raised" area at all? If I do that with the file, it tends to scratch the surface. If I try to remove it with additional turns of the drill bit, it looks like it may be starting to countersink the hole, which I know you're not supposed to do. Any advice for me? Thanks, Dave Van Lanen Madison, WI 601 XL ________________________________ Message 7 _____________________________________ Time: 07:55:25 PM PST US From: Paul Mulwitz Subject: Re: Zenith-List: Proper Deburring Technique --> Zenith-List message posted by: Paul Mulwitz Hi Dave, I think it is important to take off all the raised area around the hole so the pieces of sheet metal mate completely. As I understand it, this is not so important where the rivets mate to the holes, but I try to get that area flat too. I don't think light scratches are a problem, so I don't worry about them. I just use a smooth file and let the scratches come along with the burrs. I intend to paint my plane anyway, so the scratches will disappear under the paint. Good luck, Paul XL wings At 07:17 PM 1/16/2006, you wrote: >--> Zenith-List message posted by: "Dave VanLanen" > > >I have a procedural question regarding deburring. How much is enough in >terms of material removed? If I use the file technique with a light touch >to avoid scratches, or if I use the drill bit technique with minimal turns >to avoid countersinking, it will take off the noticeable burrs. However, if >I run my fingernail towards the hole, there is still a slight "ridge" right >at the edge of the hole. Do I need to get all of this material off, so that >there is absolutely no "raised" area at all? If I do that with the file, it >tends to scratch the surface. If I try to remove it with additional turns >of the drill bit, it looks like it may be starting to countersink the hole, >which I know you're not supposed to do. > >Any advice for me? > >Thanks, >Dave Van Lanen >Madison, WI >601 XL > > ________________________________ Message 8 _____________________________________ Time: 10:31:51 PM PST US From: Subject: Zenith-List: plug --> Zenith-List message posted by: Does anyone know where I can purchase a magnetic oil pan drain plug for an EA-81 Subaru stock oil pan? Thanks. Bob Tichy. ________________________________ Message 9 _____________________________________ Time: 10:39:51 PM PST US From: "kevinbonds" Subject: RE: Zenith-List: Proper Deburring Technique --> Zenith-List message posted by: "kevinbonds" Dave I have toiled over this one as well. Don't feel alone. I have come to the conclusion that there is no perfect method. I use the drill bit and try not to countersink, but always seems to be, as you say, "starting to countersink" on me too. I just try not to overdo it, but still remove all that is raised. Both methods worry me as it seems the scratches from the file, as well as the stopping and starting of the drill bit (which can leave tiny gouges), could lead to cracks. Also doesn't seem too many Zodie's are falling out of the sky because of this and I figure my technique is as good as the next guys. Reckon surely it can't be the absolute worst at least. Anyway this is what helps me sleep at night. Kevin Bonds Nashville TN 601XL Corvair powered; Plans building. Empennage done; working on wings and engine. http://home.comcast.net/~kevinbonds do not archive DO NOT ARCHIVE -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Dave VanLanen Sent: Monday, January 16, 2006 9:17 PM Subject: Zenith-List: Proper Deburring Technique --> Zenith-List message posted by: "Dave VanLanen" I have a procedural question regarding deburring. How much is enough in terms of material removed? If I use the file technique with a light touch to avoid scratches, or if I use the drill bit technique with minimal turns to avoid countersinking, it will take off the noticeable burrs. However, if I run my fingernail towards the hole, there is still a slight "ridge" right at the edge of the hole. Do I need to get all of this material off, so that there is absolutely no "raised" area at all? If I do that with the file, it tends to scratch the surface. If I try to remove it with additional turns of the drill bit, it looks like it may be starting to countersink the hole, which I know you're not supposed to do. Any advice for me? Thanks, Dave Van Lanen Madison, WI 601 XL ________________________________ Message 10 ____________________________________ Time: 11:08:07 PM PST US From: "kevinbonds" Subject: RE: Zenith-List: Proper Deburring Technique --> Zenith-List message posted by: "kevinbonds" >I figure my technique is as good as the next guys. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BTW regarding my last post: I call that my "faster than a bear philosophy". In case of bear attack, you don't have to be able to outrun a bear, just need to run faster than the guy next to you. :) Kevin Bonds Nashville TN 601XL Corvair powered; Plans building. Empennage done; working on wings and engine. http://home.comcast.net/~kevinbonds do not archive DO NOT ARCHIVE